JP3678952B2 - Bridge structure with grid-like slab and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention includes a grid-like floor slab that can be applied regardless of whether the structure is newly installed or existing without impairing the inherent properties of the grid-like floor slab.BridgeThe present invention relates to a structure and its construction method.
[0002]
[Prior art]
  Structures such as suspension bridges, general bridges, viaducts, piers, and temporary bridges(Hereafter referred to as bridge structure or simply structure)The slabs are roughly divided into reinforced concrete slabs (RC slabs and PC slabs), synthetic slabs with concrete on the bottom steel plate, and steel slabs. Among these, reinforced concrete slabs have been most widely used.
[0003]
  However, in the case of such a reinforced concrete floor slab, since the entire surface of the floor slab is covered with concrete or asphalt, the weight of the floor slab itself becomes heavy. For this reason, the strength of the structural member of the structure is required, and the weight of the structure also increases. Moreover, since the construction takes time, the construction period becomes long and the cost becomes high. In addition, there is a problem that traffic congestion is caused because it is necessary to regulate the surrounding traffic in the construction (renovation) of the floor slab of the existing structure. And there was also a problem that drainage was not sufficient when it was raining or snowing.
[0004]
  On the other hand, recently, among steel floor slabs disclosed in Japanese Patent Laid-Open Nos. 63-63801 and 07-189225, lattice-type floor slabs have attracted attention in terms of drainage. ing. The grid-like slab is lighter than the reinforced concrete slab and has characteristics such as good air permeability, ventilation, drainage, and the like. For this reason, there exists an advantage that a construction period becomes short and cost also falls.
[0005]
[Problems to be solved by the invention]
  However, until now there have been examples of using a grid-type floor slab as part of the floor slab of a structure, but there have not been many examples of its use. This is because, when a grid-like floor slab is installed, it has an open space on its upper surface, so that structural members such as girders located below it are eroded by rainwater, etc., or corroded by the accumulation of dust etc. In contrast, there is a problem in the past.Hereafter referred to as steel girder structural membersThis is because no particular consideration was given to the erosion and corrosion just by being installed above.
[0006]
  Similarly, there is a problem that the concrete abutment and the pier itself and the support part thereof are eroded by rainwater etc. or corroded by the accumulation of dust etc. This is because there has been no particular consideration.
[0007]
  And since the grid-like floor slab itself is made of metal, when installing a plurality of grid-like floor slabs, if the space between the grid-like floor slabs is wide, it may be caused by the movement of the vehicle or the shaking of the structure itself. There is a problem that noise is generated. Until now, this problem has been simply fixed by welding or bolts and nuts. Furthermore, if the grid-like floor slabs are completely fixed to each other in this way, additional stress is generated due to deflection caused by shaking of the structure or passing through the vehicle, leading to a problem in strength. It was.
[0008]
  In addition, because the lattice floor slab itself does not have the function of absorbing the expansion and contraction of the structure, as with conventional reinforced concrete slabs, abutments and bridges or bridges are used in viaducts that employ lattice slabs. It is necessary to install an expansion / contraction section that absorbs the expansion and contraction of the entire structure due to the temperature difference between summer and winter. However, since this stretchable part has to use an expensive stretcher with a complicated structure, there are problems such as noise generated during the vehicle running by the stretcher, a decrease in vehicle running performance, and an increase in cost. Had been invited.
[0009]
  Although the above has been mainly described as problems of a newly-installed structure, these problems are the same even when a grid-like floor slab is adopted when replacing the floor slab of an existing structure.
[0010]
  The object of the present invention is to solve the above-mentioned problems and not to impair the characteristics inherent to the lattice floor slab,BridgeEquipped with a grid-like floor slab that can also be applied to structuresBridgeIt is intended to provide a structure and its construction method.
[0011]
[Means for Solving the Problems]
  To achieve this object, the present inventionBridgeThe gist of the structure isBridgeConfigure the structureSteel girderSupported by a structural member,Steel girderA plurality of main members disposed substantially parallel to the structural member; and a plurality of transverse members disposed substantially perpendicular to the main member;The main member and the transverse member arranged on the outermost sideEquipped with a grid-like floor slab consisting ofBridgeA structure, saidSteel girderThe grid-like floor slab facing on the structural member isSteel girderA connecting portion connected to each other by a connecting member on the structural member, the connecting portions being connected to each other by a rotatable pin connection;In addition, a packed layer of a filler is formed between the lattice-like floor slabs facing each other on the steel girder structural member.Is Rukoto.
[0012]
[0013]
  The present inventionBridgeAs another preferred embodiment of the structure, the lattice-like floor slab is supported.Steel girderWhile arranging a sealing material on the upper side of the structural member,Steel girderBetween the lattice-like floor slabs facing each other on the structural memberAnd a filling layer of the filler is formed on the sealing material.(Claims2Corresponding).
[0014]
  The present inventionBridgeIn another preferred embodiment of the structure, the inside of the packed bedAnd on the part facing the frame member of the grid-like floor slab opposed on the steel girder structural memberThe elastic material is arranged (claim)3Corresponding).
[0015]
  The present inventionBridgeAs another preferred embodiment of the structure,The bridge structure includes an expansion / contraction portion that absorbs expansion / contraction of the bridge structure,In the telescopic part,BridgeThe lattice-like floor slabs facing the longitudinal direction of the structureBridgeIt is arranged so as to overlap in the longitudinal direction of the structure.4Corresponding).
[0016]
  The present inventionBridgeAs another preferred embodiment of the structure,Of the steel girder structural memberFilling an open space of a lattice formed by the main member and the transverse member of the lattice-shaped floor slab located at the upper part (claim).5Corresponding).
[0017]
  The present inventionBridgeThe gist of the construction method of the structure isBridgeConfigure the structureSteel girderSupported by a structural member,Steel girderA plurality of main members disposed substantially parallel to the structural member; and a plurality of transverse members disposed substantially perpendicular to the main member;The main member and the transverse member arranged on the outermost sideEquipped with a grid-like floor slab consisting ofBridgeA construction method for a structure, wherein a plurality of the grid-like floor slabs areBridgeStructuralSteel girderAfter installing on the structural member,Steel girderOn the structural memberBridgeThe connecting members of the lattice-like floor slabs facing the width direction of the structure,Steel girderConnected as a pin connection that can rotate around the longitudinal direction of the structural memberAfter that, a filler is filled between the lattice-like floor slabs facing the width direction of the bridge structure.(Claims6Corresponding).
[0018]
[0019]
  In addition, the present inventionBridgeAs a preferred embodiment of the construction method of the structure, the grid-like floor slab isBridgeStructuralSteel girderBefore installing on structural members,Steel girderAfter a sealing material is arranged on the upper side of the structural member and connected by the pin connection, the space between the lattice-like floor slabs facing the width direction of the structureAnd On the sealing material,Filling with filler (claim)7Corresponding).
[0020]
  Furthermore, the present inventionBridgeAs a preferred embodiment of the construction method of the structure, before filling the filler, theSteel girderThe lattice-like floor slab on the structural member and facing the width direction of the structureIn the part facing the frame member facing,Placing an elastic material between them and then filling with a filler.8Corresponding).
[0021]
  In addition, the present inventionBridgeAs a preferable aspect of the construction method of the structure,The bridge structure includes an expansion / contraction portion that absorbs expansion / contraction of the bridge structure,In the telescopic part,Steel girderOn the structural memberBridgeThe connection member of the lattice-like floor slab facing the width direction of the structure,Steel girderAfter connecting as a pin connection rotatable around the longitudinal direction of the structural member, a new grid-like floor slab isBridgeWhen arranged in the longitudinal direction of the structure,BridgeThe grid-like floor slab facing the longitudinal direction of the structure,BridgeThe main member or the transverse member arranged in the longitudinal direction of the structure is mutually connectedBridgeIt is arranged so as to overlap in the longitudinal direction of the structure.9Corresponding).
[0022]
  Still further, the present inventionBridgeAs a preferable aspect of the construction method of the structure,The upper part of the steel girder structural memberFilling the open space of the lattice formed of the main member and the transverse member of the lattice-like floor slab located at10Corresponding).
[0023]
  Claim 1 or above6According to the invention described in (1), there is no space between the grid-like slabs. Further, since the lattice-like floor slabs are connected to each other by a rotatable pin connection, no additional stress is generated due to the deflection caused by the shaking of the structure or passing through the vehicle. Further, there is no problem that noise is generated when the vehicle passes or the structure itself shakes. Moreover, it can be installed very easily, the construction period can be shortened, and traffic restrictions in the surrounding area can be minimized.
[0024]
  UpMemorandumAccording to Ming, when a grid-like floor slab is installed in a structure, a girder located below the open space of the grid-like floor slab, etc.Steel girderThere is no problem that the structural member is corroded by rain water or the like, or corroded by accumulation of dust or the like.
[0025]
  In addition, the above claims2Or7According to the invention described in the above, such as a girder located below the open space of the grid-like floor slabSteel girderThere is no problem of corrosion caused by erosion due to rain water or accumulation of dust on structural members. In addition, since the elastic sealant is laid on the main girder, it is easy to remove the filler when replacing the grid floor slab. Make use of it.
[0026]
  Furthermore, the claim3Or8According to the invention described in (3), by arranging an elastic material (backup material) inside the packed bed, it is possible to improve the ease of removing the filler at the time of replacement work of the lattice-like floor slab. Further, when the vehicle travels on the road surface when the road surface is frozen, the packed bed is easily elastically deformed by the action of the internal elastic material, whereby the frozen ice is easily broken and easily removed.
[0027]
  In addition, the above claims4Or9According to the invention described in (1), the expansion and contraction of the entire structure can be absorbed, and an excessive gap is not formed in the expansion and contraction part, so that the problem of noise can be reduced. Also, it is not necessary to use an expensive expansion / contraction device with a complicated structure.ofShortening and reduction of construction costs are possible.
[0028]
  Still further, the above claims5Or10According to the invention described in (4), it is possible to prevent erosion due to rain water, etc., and corrosion due to dust, etc., also on the bearings, girders and the like located below the open space of the grid-like floor slab. Moreover, when the road surface freezes while maintaining durability by making the filler into a plurality of layer structures, when the vehicle travels on this, the filler part is easily elastically deformed. Frozen ice is easy to break and easy to remove.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
  Of the present inventionPremiseA first embodiment is shown in FIG.
  The lattice-like floor slabs 1b and 1c include main members 2b and 2c that are arranged in parallel with each other at intervals, and horizontal members that are arranged in parallel with each other in a direction perpendicular to the main members 2b and 2c. A plurality of auxiliary members 4b and 4c arranged parallel to the main members 2b and 2c and between the main members 2b and 2c, and the main member arranged on the outermost side of the grid-like floor slab. It has a lattice-like structure including frame members 5b and 5c made of members. The grid floor slabs 1b and 1c are installed on the main girder 6 of the structure so that the directions of the main members 2b and 2c are the vehicle traveling direction and along the longitudinal direction of the main girder 6 of the structure. Yes.
[0030]
  In the longitudinal direction of the horizontal members 3b and 3c, both end portions of the horizontal members 3b and 3c protrude from both sides of the frame members 5b and 5c, and the protruding portions serve as connecting members 9. The connecting member 9 is a connecting portion 20a for connecting the lattice-like floor slabs 1b and 1c, and as shown in FIG. 4 (a), there is a connecting hole 10 for connecting at the tip thereof. The connecting holes 10 are overlapped, and the connecting pins 8 are inserted to connect the lattice-like floor slabs 1b and 1c on the main girder 6. Here, the connection of the lattice-like floor slabs 1b and 1c by the pins 8 is not completely fixed, but is a rotation-free connection around the pins 8 installed in the direction of the main beam 6.
[0031]
  By adopting such a structure, there is no space between the lattice-like floor slabs 1b and 1c, and they are freely connected to each other. Stress is generated, and there is no problem with strength. Further, no noise is generated when the vehicle passes or the structure itself shakes.
[0032]
  Note that the structure of the connecting portion 20a is not limited to the above, and any structure that does not completely fix the grid floor slabs 1b and 1c may be used. For example, as shown in the connecting portion 20b of FIG. 2 and FIG. 4 (b) Alternatively, the connecting member 9 protruding from the frame members 5b and 5c may be connected via the connecting auxiliary member 11. Also in this case, the connection of the lattice-like floor slabs 1b and 1c by the pins 8 is not completely fixed, but is freely connected around the pins 8 installed in the direction of the main beam 6. .
[0033]
  Further, it is preferable that the connecting member 9 of the connecting portion 20a where the connecting members 9 overlap is gradually reduced in thickness (height) toward the end portion. That is, the upper surface of the end portion of the connecting member 9 is not limited to the straight shape as shown in FIG. 4 (a), but may be a curved shape as shown in FIG. 4 (b). Further, by reducing the thickness of the end portion of the connecting member 9 in this way, there is no step at the connecting portion of the lattice-like floor slabs 1b and 1c, and the traveling performance of the vehicle is improved.
[0034]
  Furthermore, although the example which connects on a main beam was demonstrated above, the same effect can be anticipated also when connecting not only to this but on a horizontal beam.
[0035]
  Of the present inventionPremiseA second embodiment is shown in FIG.
  As in the first embodiment, the lattice-like floor slabs 1b and 1c are arranged in parallel to each other with main members 2b and 2c arranged at intervals, and substantially perpendicular to the main members 2b and 2c, The transverse members 3b, 3c arranged in parallel with each other, the main members 2b, 2c between the main members 2b, 2c and a plurality of auxiliary members 4b, 4c, and a grid-like slab It has a lattice-like structure including frame members 5b and 5c composed of a main member and a lateral member arranged on the outermost side. And unlike the first embodiment, the grid-like floor slabs 1b and 1c are structured so that the direction of the transverse members 3b and 3c is the vehicle traveling direction and along the longitudinal direction of the main girder 6 of the structure. It is installed on the main girder 6 of the object.
[0036]
  In the longitudinal direction of the main members 2b and 2c, both end portions of the auxiliary members 4b and 4c protrude from both sides of the frame members 5b and 5c, and the protruding portions serve as connecting members 9. The connecting member 9 serves as a connecting portion 20c for connecting the lattice-like floor slabs 1b and 1c. As in the first embodiment shown in FIG. 4 (b), there are connecting holes 10 for connection at the distal ends of the connecting members 9, and these connecting holes 10 overlap with each other via the connecting auxiliary member 11. Then, a connecting pin 8 is inserted to connect the grid floor slabs 1b and 1c on the main girder 6. Here, the connection of the lattice-like floor slabs 1b and 1c by the pins 8 is not completely fixed, but is a rotation-free connection around the pins 8 installed in the direction of the main beam 6. The connecting member 9 is not limited to the auxiliary members 4b and 4c, and the main members 2b and 2c may be used.
[0037]
  By adopting such a structure, the lattice-like floor slabs 1b and 1c are connected to each other without any space between them, so that the structure can be shaken as in the first embodiment. And bending due to passing through the vehicle cause no additional stress and no problem with strength. Further, no noise is generated when the vehicle passes or the structure itself shakes.
[0038]
  Further, it is preferable that the thickness (height) of the connecting member 9 and the connecting auxiliary member 11 at the overlapping portion of the connecting member 9 and the connecting auxiliary member 11 gradually decreases toward the end. That is, the upper surface of the end portion of the connecting member 9 is not limited to the straight shape as shown in FIG. 4 (a), but may be a curved shape as shown in FIG. 4 (b). With such a configuration, there is no step at the connecting portion of the grid-like floor slabs 1b and 1c, and the traveling performance of the vehicle is improved.
[0039]
  Based on the above assumptions,Of the present inventionCharacteristic fruitEmbodiments are shown in FIGS. 5 and 6. FIG.
  Figure Five As shown in thisIn the embodiment, rainwater, dust, etc. accumulate in the open space between the grid-like floor slabs 1b, 1c on the main girder 6, so the upper part of the main girder 6 with the connecting portion is The filling structure is as follows:TheFIG. 5 (a) shows a vertical cross section of the connecting portion, and FIG. 5 (b) shows a plan view of the connecting portion as viewed from above, the filler 12 is placed on the main girder 6 of the structure, and the connecting member 9 and It is filled up to the same height, that is, until the connecting portion is buried in the filler.
[0040]
  By doing in this way, such as girders located in the open space between the grid-like floor slabs 1b, 1cSteel girderThere is no problem of erosion of structural members due to rain water, etc., or corrosion due to dust.
[0041]
  Further, as shown in FIGS. 6 (a) and 6 (b), a sealing material 13 is laid on the upper surface of the main girder 6 of the structure. As shown in FIG. 6 (b), it is preferable to provide a backup material 14 as an elastic material on the seal material 13 or on the portion where the filler material 12 faces the frame members 5b and 5c.
[0042]
  This sealing material 13 makes it easy to remove the filler 12 during the replacement work of the lattice-like floor slab, and can take advantage of the ease of replacement of the lattice-like floor slab. In addition, by providing the backup material 14, when the road surface is frozen, the packed bed is easily elastically deformed by the action of the backup material inside the filling material when the vehicle is running, and thus the frozen ice is cracked. Easy to remove.
[0043]
  Of the present inventionanotherAn embodiment is shown in FIG.
  In the support part that supports the structure (for example, abutment in the case of a viaduct), it is necessary to consider the effects of erosion due to rainwater, etc., and corrosion due to dust, etc., in the area below the open space of the grid slab. is there. For this reason,thisThe embodiment is an embodiment in the case where a grid-like floor slab is installed in a part of an abutment that is an expansion / contraction part of a structure.
[0044]
  As shown in FIG. 7 (a), it is preferable to fill the filler 12 between the main members 2c of the grid-like floor slab 1c above the abutment or the support. In this case, as shown in FIG. 7 (b), the filler 12 may be filled to the same height as the running surface of the main member 2c. Alternatively, as shown in FIG. 7 (c), the height of the filler 12 may be filled to a height lower than that of the main member 2c, and as shown in FIG. The layer structure may be as follows. In this case, it is preferable to install a highly durable material such as asphalt on the upper side and a material that is easily elastically deformed such as a resin material on the lower side.
[0045]
  By doing in this way, also about the abutment and the support located under the open space of a grid | lattice-like floor slab, corrosion by rain water etc., and corrosion by refuse etc. can be prevented. Moreover, durability can be maintained by making a filler into a several layer structure. Furthermore, the filler portion is easily elastically deformed when the vehicle is traveling, and thus the frozen ice is easily broken and removed.
[0046]
  Here, the lattice floor slab 1b installed on the abutment portion of the structure does not necessarily need to be a lattice floor slab, so it is desirable to fill the open space of the lattice floor slab with concrete, asphalt, or the like. In addition, under the part where the grid floor slabs 1b and 1c overlap, for example, a fence 16 or the like is installed so that rainwater passed from the grid floor slabs 1b and 1c does not flow to the abutment or support It is preferable. Furthermore, it is preferable to install a drainage skirt 17 made of a plate-like member subjected to rust prevention and anticorrosion treatment so that rainwater or the like does not flow from a portion not filled with the filler.
[0047]
  In addition, it is applicable not only to the above-mentioned abutment part but also to the upper part of the pier which is another stretchable part, and by filling the filler, the same effect can be expected for the pier.
[0048]
  Of the present inventionanotherAn embodiment is shown in FIG.
  thisIn the embodiment, the present invention is an embodiment in which a grid-like floor slab is installed at a stretchable portion of a viaduct.
[0049]
  thisAlso in the embodiment, as shown in FIG. 8 (a), the grid-like floor slab 1b includes main members 2b and 2c arranged in parallel with each other at intervals, and a direction substantially perpendicular to the main members 2b and 2c. In addition, a lattice-like structure is formed by the transverse members 3b and 3c arranged at intervals in parallel to each other. A plurality of lattice-like floor slabs 1b and 1c are installed on the main girder 6 of the structure so that the direction of the main members 2b and 2c is the vehicle traveling direction and along the longitudinal direction of the main girder 6 of the structure. Has been. A plurality of auxiliary members 4b and 4c are provided between the main members 2b and 2c in parallel with the main members 2b and 2c.
[0050]
  The grid floor slabs 1b and 1c that are in the vehicle traveling direction and are opposed to the longitudinal direction of the structure are shifted in the direction of the horizontal members 3b and 3c, respectively, and from the horizontal members 3b and 3c to the main members 2b and 2c. By causing the auxiliary members 4b and 4c to protrude outward, the lattice-like floor slabs 1b and 1c are arranged so as to overlap each other. Here, as shown in FIG. 8 (b), the thickness (height) of the overlapping portion of the main members 2b, 2c and the auxiliary members 4b, 4c gradually decreases toward the end. .
[0051]
  With such a configuration, the expansion and contraction of the entire structure can be absorbed, and an excessive gap is not formed in the expansion and contraction part, so that the problem of noise can be reduced. Moreover, since it is not necessary to use an expensive telescopic device having a complicated structure, the construction period can be shortened and the construction cost can be reduced.
[0052]
  Note that such an arrangement is not limited to the above, and as shown in FIG. 9, the main members 2b and 2c and the auxiliary members 4b of the opposed lattice-like floor slabs 1b and 1c without shifting in the direction of the horizontal member 3b, You may make it overlap by making 4c protrude from the horizontal members 3b and 3c alternately.
[0053]
  In addition, the main members 2b, 2c and auxiliary members 4b of the overlapping portions of the lattice-like floor slabs 1b, 1c should gradually decrease in thickness (height) toward the end portion. The shape is not limited to a straight line as shown in the embodiment, and may be a curved line. With such a configuration, the running performance of the vehicle is improved without causing a step between the grid-like floor slabs 1b and 1c.
[0054]
  next,Embodiment of the construction method of the present inventionWill be described. The present inventionBridge structureIn the case of construction, the following procedure is used.
(1) First, install the main girder 6 and the horizontal girder of the structure.
(2) Place the seal material 12 on the main beam 6 and the horizontal beam.
(3) Next, the grid-like floor slab 1b composed of the main member 2b, the transverse member 3b, and the auxiliary member 4b is placed on the main girder 6.
(4) Then, the next grid floor slab 1c is placed on the main girder 6 adjacent to the previous grid floor slab 1b.
(5) The grid-like floor slabs 1b and 1c are inserted into the connecting holes 10 of the connecting members 9 and the connecting pins 8 are inserted, or the connecting holes 9 between the connecting members 9 and the auxiliary members 11 are connected. By inserting the pins 8, the grid-like floor slabs 1 b and 1 c are connected on the main girder 6.
(6) The lattice floor slabs are sequentially placed on the main beam 6 in the longitudinal direction and the width direction of the structure, and are sequentially connected.
(7) The backup material 14 is installed between the lattice floor slabs 1b and 1c.
(8) The filler 12 is filled between the lattice-like floor slabs 1b and 1c.
[0055]
  By setting it as such a construction method, installation can be performed very easily and the construction period can be shortened. There is no space between the grid floor slabs 1b and 1c. Furthermore, since it is connected freely to rotate, no additional stress is generated due to deflection caused by shaking of the structure or passing through the vehicle. Further, no noise is generated when the vehicle passes or the structure itself shakes. In addition, such as girders located below the grid floor slabSteel girderThere is no problem that the structural member is corroded by rain water or the like, or corroded by accumulation of dust or the like.
[0056]
  Since the sealing material 13 is laid on the main girder 6, the filler 12 can be easily removed at the time of replacement work of the lattice-like floor slab, and the advantage of easy replacement of the lattice-like floor slab can be utilized. In addition, by providing the backup material 14, when the road surface is frozen, the packed bed is easily elastically deformed by the action of the backup material inside the filling material when the vehicle is running, and thus the frozen ice is cracked. It is easy to obtain the effect of being easily removed.
[0057]
  The backup material 14 may be installed in advance on the side surface of the grid-like floor slab. Alternatively, a seal material 13 and a backup material 14 installed thereon may be preliminarily integrated on the main beam 6 or the horizontal beam.
[0058]
  nextHighA grid-like floor slab was installed on the stretchable part of the bridgeApplication of caseThe construction method will be described. When constructing the present invention, construction is performed in the following procedure.
(1) First, install the main girder 6 and the horizontal girder of the structure.
(2) Next, a grid-like floor slab 1b composed of a main member 2b, a transverse member 3b, and an auxiliary member 4b is prepared.
(3) Then, the grid-like floor slab 1b is placed on the main beam 6.
(4) When the next grid floor slab 1c is subsequently placed on the structure, the main part of the grid floor slab 1b already placed and the other grid floor slab 1c to be placed next It mounts on the abutment part of a structure so that the edge part of a member direction may overlap.
[0059]
  By adopting such a construction method, the lattice-like floor slab can absorb the expansion and contraction of the entire structure, and since there is no excessive gap in the expansion and contraction part, the problem of noise can be reduced. . Further, since it is not necessary to use an expensive telescopic device having a complicated structure, it can be installed very easily, and the construction period can be shortened and the construction cost can be reduced.
[0060]
  Here, since the lattice-like floor slab installed on the abutment portion of the structure does not necessarily need to be a lattice-like floor slab, it is desirable to fill the open space of the lattice-like floor slab with concrete or asphalt.
[0061]
  In addition, the installation order of the lattice floor slabs installed on the abutment part of the structure and the lattice floor slabs installed on the main girder of the structure is not necessarily the above, and the expansion / contraction part of the structure (on the abutment or After installing the grid floor slab on the pier), the grid floor slab may be installed on the main girder.
  Furthermore, in the above-described embodiment, an example is shown in which it is installed in the stretchable part between the bridge and the abutment, but the same applies to the case where it is installed in the stretchable part between the bridge and the bridge. It can be installed in the main girder of the adjacent bridge following the floor slab.
[0062]
  In the first and second embodiments, the lattice shape of the lattice-shaped floor slab has been described as a square shape. However, the present invention is not limited to this and may be a lattice having other shapes. Moreover, the auxiliary member of the lattice-like floor slab is not essential, and may be installed between the main members or between the lateral members as necessary.
[0063]
  As the filler 12 in the present invention, concrete, asphalt, resin material or the like is used, but asphalt is preferable from the viewpoint of durability and ease of removal. Further, the backup material 14 which is an elastic material is preferably an elastic resin material such as rubber or sponge. Further, as the sealing material 13, a resin material, a rust preventive paint, or the like can be used.
[0063]
【The invention's effect】
  Main departureAccording to Ming, there is no space between the grid slabs. In addition, since they are connected in a freely rotating manner, additional stress is not generated due to deflection caused by shaking of the structure or passing through the vehicle, and there is no problem in strength. Further, no noise is generated when the vehicle passes or the structure itself shakes. Moreover, it can be installed very easily, the construction period can be shortened, and traffic restrictions in the surrounding area can be minimized. Also,Main departureAccording to Ming, girder etc. located below the open space of the grid-like floor slabSteel girderThere is no problem of corrosion of structural members due to erosion due to rain water, etc., or dust.
  Further claims2 Or 7Described inMain departureAccording to Ming, girder etc. located below the open space of the grid-like floor slabSteel girderThere is no problem of corrosion of structural members due to erosion due to rain water, etc., or dust. In addition, since the elastic sealing material is laid on the main girder, it is easy to remove the filler during the replacement work of the lattice-like floor slab, and the advantage of easy replacement of the lattice-like floor slab can be utilized.
  Furthermore, the claimThree Or 8According to the invention described in the above, by installing the backup material as the elastic material, the ease of removing the filler is improved during the replacement work of the lattice floor slab, and when the road surface freezes, When traveling on this, the packed bed is easily elastically deformed by the action of the internal elastic material, whereby the frozen ice is easily broken and easily removed.
  And claimsFour Or 9According to the invention described in (1), the expansion and contraction of the entire structure can be absorbed, and an excessive gap is not formed in the expansion and contraction part, so that the problem of noise can be reduced. Also, it is not necessary to use an expensive expansion / contraction device with a complicated structure.ofShortening and reduction of construction costs are possible.
  Furthermore, the claimFive Or TenAccording to the invention described in (3), it is possible to prevent erosion due to rain water, etc., and corrosion due to dust, etc., on the bearings, girders and the like located below the open space of the grid-like floor slab. In addition, since the filler has a multi-layer structure, when the road surface freezes while maintaining durability, the vehicle is likely to be elastically deformed when the vehicle travels on the road surface. Ice is easy to break and easy to remove.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view of a structure provided with a grid floor slab of the present invention as viewed from above.
FIG. 2 is a diagram showing another example of the first embodiment of the present invention, and is a plan view of a structure provided with a grid-like floor slab of the present invention as viewed from above.
FIG. 3 is a diagram showing a second embodiment of the present invention, and is a plan view of a structure provided with a grid floor slab of the present invention as viewed from above.
FIG. 4 is a view showing a connecting portion of the first and second embodiments of the present invention, (a) is a view showing an example of directly connecting a connecting member, and (b) is a connecting member. It is the figure which showed the example connected via an auxiliary member.
FIG. 5 shows the present invention.CharacteristicIt is a figure which shows embodiment, (a) is the figure which showed the vertical cross section of the connection part, (b) is the top view seen from the upper side.
FIG. 6 of the present inventionCharacteristicIt is a diagram showing an embodiment, (a) is a vertical sectional view of a connecting portion showing an example in which a backup material is installed in contact with a frame member, (b) is a backup material is installed on the upper part of the seal material It is the vertical sectional view of the connection part which showed the example.
[Fig. 7] of the present invention.Another distinctiveBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment, (a) is a plan view of a structure provided with a grid floor slab of the present invention as viewed from above, and (b) is a structure provided with a grid floor slab of the present invention. FIG. 4C is a cross-sectional view of the filler-filled portion. FIG.
[Fig. 8] of the present inventionAnother distinctiveBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment, (a) is a cross-sectional view in the width direction of a structure provided with a grid floor slab of the present invention, and (b) is a structure provided with a grid floor slab of the present invention. It is the top view which looked at from the upper side.
FIG. 9The fruitIt is a figure which shows another example of embodiment.
[Explanation of symbols]
1b, 1c: Lattice slab, 2b, 2c: Main member, 3b, 3c: Horizontal member, 4b, 4c: Auxiliary member, 5b, 5c: Frame member, 6: Main beam, 8: Pin, 9: Connecting member , 10: Connecting hole, 11: Connecting auxiliary member, 12: Filling material, 13: Sealing material, 14: Back-up material, 15: Vehicle running surface, 16: Fence, 17: Drain skirt, 18: Abutment, 19: Bearing , 20a, 20b, 20c: Connection part

Claims (10)

A plurality of main members supported by a steel girder structural member constituting a bridge structure and disposed substantially parallel to the steel girder structural member; and a plurality of transverse members disposed substantially perpendicular to the main member ; A bridge structure provided with a grid-like floor slab composed of the main member and the lateral member arranged on the outermost side , wherein the grid-like floor slab opposed on the steel girder structure member is the steel girder a connecting portion for connecting to each other by connecting member on a structural member, the connecting portion Ri is Na are connected to each other in a pivotable pin coupling, between opposite said grid-like slab on the steel girder structure member , bridges structure having a grid-like slab, characterized in Rukoto filling layer is formed by fillers. The sealing material is disposed on the upper side of the steel girder structure member that supports the lattice-like floor slab, and the filling is performed between the lattice-like floor slabs opposed on the steel girder structure member and on the sealing material. The bridge structure provided with the grid-like floor slab according to claim 1, wherein a filling layer of a material is formed . The elastic material is arrange | positioned in the inside of the said packed bed, and the part facing the said frame member of the said grid | lattice-like floor slab which opposes on the said steel girder structure member, It is characterized by the above-mentioned. A bridge structure provided with a grid-like floor slab described in 1 . The bridge structure includes an expansion / contraction portion that absorbs expansion / contraction of the bridge structure, and in the expansion / contraction portion, the grid-like floor slabs facing in the longitudinal direction of the bridge structure are mutually connected to the bridge structure. The bridge structure provided with the grid-like floor slab according to any one of claims 1 to 3, wherein the bridge structure is disposed so as to overlap in a longitudinal direction . 5. The filler is filled in an open space of a lattice formed by the main member and the transverse member of the lattice-like floor slab located on the steel girder structural member. A bridge structure provided with the grid-like floor slab described in the paragraph . A plurality of main members supported by a steel girder structural member constituting a bridge structure and disposed substantially parallel to the steel girder structural member; and a plurality of transverse members disposed substantially perpendicular to the main member ; A method of constructing a bridge structure having a grid-like floor slab composed of the main member and the lateral member arranged on the outermost side , wherein a plurality of the grid-like floor slabs are steel girder structural members of the bridge structure after placing, the mutual coupling member of the steel girder structure member on the said bridge structure opposite said grid-like slab in the width direction of a rotatable pin coupled to the longitudinal direction around the steel girder structure member After the connection , a method for constructing the bridge structure is characterized in that a filler is filled between the grid-like floor slabs facing in the width direction of the bridge structure. Before installing the grid-like floor slab on the steel girder structural member of the bridge structure, a sealing material is arranged on the upper side of the steel girder structural member, and after connecting by the pin connection, the width of the bridge structure The method for constructing a bridge structure according to claim 6, wherein a filler is filled between the lattice-like floor slabs facing each other and on the sealing material . Before filling the filler, an elastic material is disposed on the steel girder structural member and on the portion facing the frame member of the grid-like floor slab facing the width direction of the bridge structure, 8. The method for constructing a bridge structure according to claim 7, wherein the filler is then filled. The bridge structure includes an expansion / contraction portion that absorbs expansion / contraction of the bridge structure, and the lattice-like floor slab facing the width direction of the bridge structure on the steel girder structure member in the expansion / contraction portion When the new grid-like floor slab is disposed in the longitudinal direction of the bridge structure after the coupling member is coupled as a pin connection rotatable around the longitudinal direction of the steel girder structural member, the bridge Arranging the main member or the transverse member of the lattice-like floor slab facing the longitudinal direction of the structure so as to overlap each other in the longitudinal direction of the bridge structure; The construction method for a bridge structure according to any one of claims 6 to 8, wherein the bridge structure is a construction method . The filling material is filled in an open space of a lattice formed by the main member and the transverse member of the lattice-like floor slab located on the steel girder structural member. The construction method of the bridge structure as described in the item .

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