JP4828465B2 - Floor slab construction method using cargo handling device and composite floor slab - Google Patents

Description

The present invention is a civil engineering equipment for bridge construction, etc., and a cargo handling device for carrying construction materials such as reinforcing bars in construction work
The present invention relates to a method for constructing a floor slab using a synthetic floor slab.

  One of the works in civil works such as bridge construction is the reinforcement work of reinforcing bars as a pre-work when placing concrete, and the work of the reinforcement work is an on-site work by hand. Further, the reinforcing bars used for the bar arrangement work are also transported from the material storage area to the work site as the bar arrangement work proceeds.

  Previously, construction materials such as rebars were carried manually, and each rebar was 10m to 15m long and weighed 30kg to 40kg, which was a heavy burden on the work and the workability was extremely poor. It was.

  Therefore, as disclosed in Patent Document 1, the present applicant provided a cargo handling method and a cargo handling apparatus, which reduced the burden on the operator and greatly improved work efficiency.

  The civil engineering work in which Patent Document 1 is implemented is, for example, a bridge construction. A beam or the like is bridged between steel piers with a steel girder or the like, and a floor slab is constructed. Assemble the scaffold using the beam, and install a formwork for placing concrete so as to cross over the beam, and further incorporate a reinforcing bar, steel frame, etc. in the formwork, so that it will have the required thickness Concrete is placed in the formwork.

  In the above-described floor slab construction method, the range that can be used as a scaffold is limited to the upper flange of the main girder, and the cargo handling method and cargo handling apparatus disclosed in Patent Document 1 correspond to such work situations. It was.

  One of the recent methods of floor slab construction is a floor slab construction method using a composite floor slab in which concrete is cast on a steel panel. In the floor slab construction method, The panel has a function as a formwork, and the formwork installation work is omitted.

  Here, the floor slab construction method using a synthetic floor slab and a synthetic floor slab will be described with reference to FIG.

  In FIG. 9, reference numeral 1 denotes a main beam, and a steel panel 2 is installed between the main beams 1 and 1.

  The steel panel 2 has a bottom steel plate 3 and a reinforcing member 4 disposed in a direction orthogonal to the main girder 1 welded to the bottom steel plate 3 at a required interval, and further a stud 5 for strengthening the bonding of concrete. Are planted in the bottom steel plate 3 at a predetermined density. In addition, as the reinforcing member 4, a shape steel, an iron plate or the like is used. Further, the reinforcing member 4 may be provided in a direction intersecting with the main beam 1 or in parallel or substantially in parallel.

  The steel panel 2 is manufactured in advance in the factory, such as by cutting out the bottom steel plate 3 and welding the reinforcing member 4 and the stud 5 to the bottom steel plate 3 at the factory.

  The completed steel panel 2 is transported to the construction site and installed. Further, the joint between the steel panel 2 and the steel panel 2 is joined at a site by a necessary means such as friction joining. After the steel panel 2 is installed, a reinforcing bar 6 is arranged on the upper side of the reinforcing member 4, and the reinforcing bar 6 necessary for the reinforcing work is transported from the material storage area to the work site as the reinforcing work is performed. The When the reinforcing bars 6 are arranged, concrete is placed. In placing concrete, the steel panel 2, particularly the bottom steel plate 3 functions as a mold, eliminating the need for on-site mold installation work.

  The cargo handling method and cargo handling apparatus disclosed in Patent Document 1 can also be implemented in a floor slab construction method using a synthetic floor slab. In the floor slab construction method using a composite floor slab, the entire surface of the steel panel 2 can be used as a scaffold. However, in the cargo handling method and the cargo handling apparatus of Patent Document 1, the installation location of the cargo handling apparatus is on the upper flange of the main girder 1. There is a restriction that the reinforcing member 4 is limited, and the reinforcing member 4 crosses the flange surface.

JP 2005-188079 A

  In view of such circumstances, the present invention eliminates restrictions on the installation of a cargo handling device that transports construction materials in a floor slab construction method using a composite floor slab, simplifies the installation work, and makes the installation location appropriate. To improve work efficiency.

  The present invention relates to a cargo handling apparatus used for construction of a floor slab using a steel panel in which a reinforcing member is fixed to a bottom steel plate at a required interval, and is mounted obliquely over at least two of the reinforcing members. A rail support member having a pedestal bar to be placed and a column erected on the pedestal bar is disposed at a required interval, the column is connected by a horizontal member, and the rail is fixed to the column, The present invention relates to a cargo handling device that can travel the cargo handling cart device.

  The present invention also relates to a cargo handling apparatus in which the pedestal bars are connected to each other, and to a cargo handling apparatus in which the pedestal bars are connected so as to be bent.

  The present invention also relates to a cargo handling apparatus in which the horizontal member is fixed to a stud planted on the bottom steel plate via a fixing auxiliary tool, and the horizontal member is fixed to a test rod erected on the main girder. This relates to a handled cargo handling device.

  The present invention includes a step of placing a rail supporting member having a rail supporting column on a steel panel at a required interval over the entire construction section, and connecting the column with a horizontal member; The process of fixing and laying, the process of transporting the construction materials by moving the cargo handling bogie device to the rail, the process of placing concrete on the steel panel, and the completion of the work corresponding to the progress of the construction The present invention relates to a floor slab construction method using a composite floor slab having the rail in the section and the step of removing the rail support member.

  According to the present invention, in a cargo handling apparatus used for floor slab construction using a steel panel in which reinforcing members are fixed to a bottom steel plate at a required interval, the reinforcing member is slanted over at least two of the reinforcing members. A rail support member having a pedestal bar placed on the pedestal bar and a support column erected on the pedestal bar is disposed at a required interval, the support column is connected by a horizontal member, and the rail is fixed to the support column, Since the loading / unloading cart device can run on the rail, the rail support member can be placed on any position of the steel panel, there is no restriction on the location of the rail, and there are few components and the rail can be easily laid. .

  Moreover, according to this invention, since the said pedestal bars were connected, the rail support member can become independent and workability | operativity improves.

  According to the present invention, since the pedestal bar is connected so as to be bendable, it can be folded, and can be transported in a previously connected state, which facilitates handling and simplifies on-site work.

  Furthermore, according to the present invention, the horizontal member is fixed to the stud installed in the main girder because the horizontal member is fixed to the stud planted on the bottom steel plate via a fixing auxiliary tool. Therefore, even when an external force such as a cross wind acts, an excellent effect such as good stability is exhibited.

  According to the present invention, the rail supporting member having the rail supporting column is placed on the steel panel at a required interval over the entire construction section, and the column is connected by the horizontal member, and the column It corresponds to the process of fixing the rail to the rail, the step of running the loading cart device on the rail to transport the construction material, the step of placing concrete on the steel panel, and the progress of the construction. And the step of removing the rail and the rail supporting member in the construction completion section, so that the rail can be easily laid and the loading cart device can be installed without any restrictions on the installation location. The construction material can be transported by the equipment, the work efficiency is improved and the rail and rail support mechanism are removed sequentially for the construction completion section, so the removal work of the rail, rail support mechanism and cargo handling device is completed along with the completion of the construction Shi The work efficiency of the floor slab construction to exhibit excellent effects such as to improve.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, an outline of a cargo handling apparatus according to the present invention will be described with reference to FIGS. In FIGS. 1 and 2, the same components as those shown in FIG. 9 are denoted by the same reference numerals.

  A rail support mechanism 8 is placed on the reinforcing member 4 of the steel panel 2, and the rail 9 is supported by the rail support mechanism 8. A cargo handling trolley device 11 is provided on the rail 9 so as to be able to travel.

  As the cargo handling cart device 11, for example, the one described in Japanese Patent Publication No. Sho 46-36562 can be used.

  The cargo handling cart device 11 shown in the figure is a single-rail self-propelled type, and the cargo handling cart device 11 is composed of a driving cart 12 and loading carts 13 and 14 that are appropriately connected and organized to the driving cart 12. The If two rails (double rails) are supported by the rail support mechanism 8, a double rail type cargo handling cart device 11 can be used. Further, the hand-held cargo handling cart device 11 may be used instead of the self-propelled type.

  The drive carriage 12 and the loading carriages 13 and 14 ride on the upper surface of the rail 9 via wheels 15 so that they can run freely. Further, a rack 16 is provided on the lower surface of the rail 9, and the drive carriage 12 has a traveling gear (not shown) that meshes with the rail 9, and the driving gear is driven to rotate, The drive carriage 12 travels and pulls the loading carriages 13 and 14.

  Next, the rail support mechanism 8 will be described.

  FIG. 3 shows the rail support mechanism 8 according to the first embodiment.

  The rail support mechanism 8 includes a pedestal bar 18 having a required length and a support column 21 erected on the pedestal bar 18. The pedestal bar 18 is preferably a rectangular hollow pipe having a rectangular cross section, and the length of the pedestal bar 18 extends over at least two reinforcing members 4 while being inclined with respect to the reinforcing member 4. . The column 21 is preferably a pipe having a circular cross section, and the column 21 is fixed to the base bar 18 by welding or the like. A T-shaped rail support member 50 is configured in a state where the support column 21 is fixed to the pedestal bar 18.

  The rail support member 50 is placed on the reinforcing member 4 so that the pedestal bar 18 is inclined with respect to the reinforcing member 4 and extends over the two reinforcing members 4.

  The rail support members 50 are arranged at a required interval in the longitudinal direction of the main beam 1. The direction of inclination of the pedestal bar 18 is arbitrary. For example, as shown in the figure, the pedestal bar 18 is installed by alternately changing the inclination direction.

  The rail support member 50 is erected, the column 21 is vertical, a horizontal member 25 is passed between the adjacent columns 21 and 21, and the horizontal member 25 and the column 21 are connected and fixed by a clamp 31. By connecting at least two rail support members 50 by the horizontal member 25, the rail support members 50 can be self-supporting.

  Thus, if the rail support member 50 is sequentially assembled to the horizontal member 25, the rail support mechanism 8 over the required range is assembled.

  By fixing the rail 9 to the support column 21 of the rail support mechanism 8, the laying of the rail 9 is completed. The installation range of the rail 9 extends over the entire construction section extending to the construction site farthest from the material storage.

  The rail 9 is first laid in all sections of the construction, the construction is started from a distant part, and the rail 9, the rail support member 50, and the horizontal member 25 are gradually removed and removed from the completed construction. . Therefore, the rail 9, the rail support member 50, and the horizontal member 25 do not disturb the work of the work, and when the work is completed, all or almost all of the rail 9 and the rail support member 50 are completed. Has been removed.

  The attachment of the rail 9 and the horizontal member 25 will be described with reference to FIG.

  A rail fixing bracket 26 is fitted to the upper end of the column 21, and the rail fixing bracket 26 is fixed by a push bolt 27. The fitting hole of the rail fixing bracket 26 is a blind hole, and the rail fixing bracket 26 is abutted against the upper end of the column 21 so that positioning with respect to the column 21 is possible, and the length of the column 21 is managed. Thus, adjustment of the vertical position of the rail fixing bracket 26 can be omitted.

  Or when the fitting hole of the said rail fixing bracket 26 has penetrated, the adjustment of the vertical position of the said rail fixing bracket 26 is abbreviate | omitted by aligning the upper end of this rail fixing bracket 26 with the upper end of the said support | pillar 21. can do.

  A spacer 28 is interposed between the rail 9 and the rail fixing bracket 26, and the rail 9 is fixed to the rail fixing bracket 26 with a bolt 29. The spacer 28 may be omitted, and the rail 9 may be directly fixed to the rail fixing bracket 26. The rail fixing bracket 26 and the spacer 28 may be integrally formed.

  The horizontal member 25 is fixed by the clamp 31 in a state orthogonal to the column 21.

  When the fixing of the rail 9 and the mounting of the horizontal member 25 are completed, the cargo handling cart device 11 is put on the rail 9.

  Since the struts 21 of the plurality of rail support members 50 are connected by the horizontal member 25 and the rail 9 is further attached, the installation state of the rail support mechanism 8 is stabilized, and the rail support mechanism 8 is made of steel. Even if it is not fixed to the panel 2, the cargo handling cart device 11 can be stably driven only by being placed on the reinforcing member 4.

  In addition, when external force, such as a cross wind, acts and the further stability is requested | required, the said rail support mechanism 8 is fixed using the stud 5 planted by many in the bottom steel plate 3. FIG.

  When the rail support mechanism 8 is fixed using the stud 5, a fixing auxiliary tool 33 (see FIG. 5) is used, and the horizontal member 25 and the stud 5 are connected by the fixing auxiliary tool 33.

  With reference to FIGS. 5-7, an example of the said fixing assistance tool 33 is demonstrated.

  The fixing auxiliary tool 33 includes an auxiliary metal fitting A35, an auxiliary metal fitting B36, and an auxiliary metal fitting C37. The auxiliary metal fitting A35 includes a cylindrical portion 38 that is fitted to the horizontal member 25, and a plate welded to the cylindrical portion 38. Part 39. The auxiliary metal fitting B36 is L-shaped.

  The auxiliary metal fitting C37 includes a plate portion 41 bent into an L shape, a nut 42 fixed to the plate portion 41 by welding or the like, and a connecting bolt 43 screwed to the nut 42. The plate portion 41 has an engagement hole 44 into which the head of the stud 5 can be inserted and removed.

  The auxiliary metal fitting A35 is fitted to the horizontal member 25, and the auxiliary metal fitting A35 is allowed to rotate with respect to the horizontal member 25. The auxiliary metal fitting B36 is fixed to the plate portion 39 with bolts. The connection bolt 43 is loosely inserted into the auxiliary metal fitting B 36, the connection bolt 43 is screwed into the nut 42, and the plate portion 41 is engaged with the stud 5 through the engagement hole 44.

  The length of the fixing auxiliary tool 33 is adjusted by tightening the connecting bolt 43, and the inclination of the fixing auxiliary tool 33 is adjusted by rotating the auxiliary metal fitting A35 with respect to the horizontal member 25. The

  When the length and inclination of the fixing auxiliary tool 33 are determined, the auxiliary metal fitting A35 is fixed to the horizontal member 25 by a push screw 45.

  As shown in FIG. 5, when the rail support mechanism 8 is provided on the main girder 1, a probe (not shown) is used as a holding and fixing means for fixing the rail support mechanism 8. Also good.

  The inspection rod is erected on the flange of the main girder 1 at a predetermined interval, and is used when measuring the casting thickness or the like of concrete.

  The rail support mechanism 8 can be more easily fixed by fitting and fixing a pipe to the test rod and fixing the pipe and the horizontal member 25 using the clamp 31.

  The installation position of the rail support mechanism 8 is placed on the reinforcing member 4 and is not limited to the main girder 1.

  A second embodiment will be described with reference to FIG. In FIG. 8, the same components as those shown in FIG. 3 are denoted by the same reference numerals.

  In the second embodiment, the rail support members 50 and 50 in the first embodiment are connected in a distorted manner.

  The rail support members 50 and 50 may be connected so that the ends of the pedestal bars 18 and 18 are fixed at a predetermined angle, or may be connected flexibly. In the case where the base bars 18 having the same length are used, the interval between the columns 21 standing on the base bar 18 can be adjusted by adjusting the bending angle when the base bars 18 having the same length are used.

  Further, when the pedestal bar 18 is connected to be able to be bent, a plurality of rail support members 50 can be connected in advance and can be spread and installed at the installation site. By connecting a plurality of pieces in advance, the connection work at the site is reduced, and by connecting a plurality of pieces, it becomes possible to be independent and workability is improved. Further, the conveyance can be performed in a folded state, and the conveyance efficiency is improved.

  The bent state between the rail support members 50 and 50 is fixed by installing the horizontal member 25 between the support columns 21 and 21. The rail 9 is attached to the column 21 and the rail 9 is laid.

  In order to further secure the stability of the rail support mechanism 8, it can be fixed using the stud 5 and the inspection rod, as in the first embodiment.

  In the present invention, since the rail support mechanism 8 only needs to be placed on the reinforcing member 4, the installation position of the rail support mechanism 8 is not limited, and the rail support mechanism 8 can be placed at any position on the steel panel 2. Can be installed.

  Further, the rail support mechanism 8 only needs to be installed on the reinforcing member 4, and the rail 9 can be laid immediately after installation, and the workability is very good.

  The rail support member 50 constituting the rail support mechanism 8 is composed of two members, the pedestal bar 18 and the support column 21, and has a very simple structure with few used members.

It is a side view which shows embodiment of this invention. It is an AA arrow line view of FIG. It is a top view of a rail support mechanism used for a 1st embodiment of the present invention. It is a front view of this rail support mechanism. It is a front view with which this rail support mechanism was fixed with auxiliary metal fittings. It is a front view of this auxiliary metal fitting. It is a top view of this auxiliary metal fitting. It is a top view of the rail support mechanism used for the 2nd Embodiment of this invention. It is explanatory drawing which shows a synthetic floor slab.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main girder 2 Steel panel 3 Bottom steel plate 4 Reinforcement member 5 Stud 6 Reinforcing bar 8 Rail support mechanism 9 Rail 11 Cargo trolley device 12 Drive trolley 14 Loading trolley 18 Pedestal bar 21 Post 25 Horizontal member 26 Rail fixing bracket 33 Fixing aid 35 Auxiliary metal fittings A
36 Auxiliary metal fitting B
37 Auxiliary metal fitting C
50 rail support member

Claims (6)

  In a cargo handling device used for construction of a floor slab using a steel panel in which reinforcing members are fixed to a bottom steel plate at a required interval, a pedestal placed diagonally over at least two of the reinforcing members A rail support member having a bar and a column that is erected on the pedestal bar is disposed at a required interval, the column is connected by a horizontal member, the rail is fixed to the column, and a cargo handling cart device is mounted on the rail. A cargo handling device characterized by being capable of traveling.   The cargo handling apparatus according to claim 1, wherein the base bars are connected to each other.   The cargo handling device according to claim 1, wherein the base bar is connected to bendable.   The cargo handling device according to claim 1, wherein the horizontal member is fixed to a stud planted on the bottom steel plate via a fixing auxiliary tool.   2. The cargo handling apparatus according to claim 1, wherein the horizontal member is fixed to a test rod erected on the main girder.   A rail supporting member having a rail supporting column is placed on a steel panel at a necessary interval over the entire construction section, and the column is connected by a horizontal member, and the rail is fixed to the column and installed. A step of moving the loading cart device to the rail to transport the construction material, a step of placing concrete on the steel panel, and the rail in the construction completion section corresponding to the progress of the construction. And a step of removing the rail support member. A method for constructing a floor slab using a synthetic floor slab.

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