JPH0823168B2 - Connecting structure of a plurality of blocks and arrangement construction method of a plurality of blocks - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a plurality of blocks and a method of arranging and constructing a plurality of blocks when constructing a pipeline or an underground wall using a box culvert. This block is suitable for the mud construction method in which the block is submerged in mud water and placed.

[0002]

2. Description of the Related Art Conventionally, a plurality of blocks are arranged and arranged in order to accurately arrange the blocks when concrete is cast in place or when concrete products such as box culverts are used for installation. As shown in FIG. 12 and FIG. 13, facing the end faces of the adjacent blocks 1 and 2, the hook alloy tools 3 and 4 made of angle steel are embedded together with the anchors 5, and fixed to the inner faces of the ends of the blocks 1 and 2. The hollow portion is closed by the cover plates 7 and 7 attached with the attached metal fittings 6, and while pouring water into the hollow portion, each block is lowered into the underground hole containing muddy water, and the hooking alloy tools 3 and 4 are hooked to each other. The blocks were arranged in sequence.

[0003]

However, in the above-mentioned conventional construction, a relatively thick culvert is required in order to attach the hanging alloy tool to the end of the box culvert, and the submerged culvert needs to be submerged in muddy water. When placing blocks,
There is a problem that it is difficult to engage the previously-arranged preceding block with the hooking alloy tools 3 and 4 on the end faces of the subsequent blocks to be arranged next. Further, in order to facilitate the engagement of these hanging alloy tools 3 and 4, it may be considered that the hanging alloy tool has a length reaching the liquid surface, but after the construction, the hanging alloy tool projects from the block end surface, There was a problem that the problem of occurs. The present invention
It can be applied to relatively thin box culverts, and even when placing blocks under the liquid surface in mud water, it is easy and accurate to place and install multiple blocks. An object of the present invention is to provide a connecting structure for a plurality of blocks that does not project from the above and a method for arranging and constructing a plurality of blocks.

[0004]

In order to achieve the above-mentioned object, the gist of the present invention as set forth in claim 1 is to provide the box culvert at a position close to the mutually opposing surfaces of the preceding block and the succeeding block. Install the guide rod on the side surface of the preceding block, the said succeeding block Gaidoro'
A guide pipe for de engages provided in the connection structure of a plurality of blocks, characterized in that so as to connect the outer periphery to the guide pipe was loosely fitted with two blocks of the guide rod. Further, the gist of the present invention according to claim 2 resides in the connecting structure of a plurality of blocks according to claim 1, characterized in that the upper portion of the guide rod is detachable.

According to a third aspect of the present invention, a guide rod having a detachable upper part is attached to the preceding block at a position close to the mutually opposing surfaces of the preceding block and the succeeding block of the box culvert. , A guide pipe is fixed to the succeeding block, the preceding block is hung in an underground hole, the guide pipe is loosely fitted over the outer periphery of the guide rod above the preceding block, and guided by the guide rod. It is a method of arranging and constructing a plurality of blocks, characterized in that the succeeding block is suspended from the preceding block into the underground hole.

[0006]

According to the connection structure of the block according to the present invention, attaching the guide rod to the side of the preceding block, this guide
Since the guide pipe that engages with the rod is provided close to the side surface of the succeeding block, it can be applied to a relatively thin-walled box culvert. Further, according to the arrangement construction method, the preceding block is hung in the underground hole, and the guide pipe fixed to the following block is loosely fitted above the preceding block to the outer circumference of the guide rod connected to the preceding block, While guiding with the guide rod, the subsequent block is suspended from the preceding block and placed in the underground hole, so even when placing the block below the liquid surface in muddy water, multiple blocks can be placed easily and accurately. Therefore, by removing the upper portion of the guide rod after arranging the subsequent block, it is possible to prevent the metal fitting or the like from protruding from the end surface of the block after construction.

[0007]

EXAMPLE Regarding the first example of the present invention, a case where a plurality of blocks are arranged to construct a pipeline in the ground will be described as an example.
A detailed description will be given with reference to the drawings. 1 is a perspective view for schematically explaining a plurality of blocks arranging construction tool and a plurality of blocks arranging construction method according to an embodiment of the present invention, FIG. 2 is a side view, and FIG. 3 is a front view. The block placement and construction tool according to this embodiment is a guide rod 20 having an upper part removable from the block 11 at a position near the mutually opposing surfaces of the preceding block 11 and the following block 12 adjacent to each other in the box culvert 10. , this guide rod 20 with engaging Bro <br/> Tsu guide pipe 30 fixed to the click 12, engaged loosely guide pipe 30 to the outer periphery of the guide rod 20 at the top of the block 11, the guide rods The block 12 is accurately arranged and installed in the underground hole 35 with respect to the block 11 while being guided by 20.

Each block 1 of the box culvert 10
Nos. 1 and 12 have a quadrangular cross section, the end faces are laterally oriented, and a plurality of insert nuts 13 (see FIG. 4) are laterally embedded at the side faces of the front end, which are close to the mutually opposing faces, at intervals in the vertical direction. A guide pipe 30 to be described later is embedded at a position close to the mutually opposite surfaces at the rear end, and a plurality of insert nuts 14 are embedded upward at both front and rear sides at an intermediate position at intervals in the front-rear direction. The steel rod has a through hole 15 penetrating laterally as in the conventional case at a position closer to it.

The guide rod 20 is shown in FIGS .
As described above , the steel plate rod 21, the basic rod 25, and the additional rod 27 connected to the basic rod 25 are provided. The steel plate rod 21 has a round steel basic rod 25 fixed thereto via a spacer 24 fixed to the plate surface of a rectangular steel plate 22 along the longitudinal direction, and has an adjusting plate 22a on the plate surface facing the side surface near the front end of the block. Ri Oh by fixing the, a plurality of mounting holes 22b through the steel plate 22 and the adjusting plate 22a, are engraved the screw hole 25a to the upper end of the base rod 25. The connecting rod 27 is made of round steel having the same diameter as the basic rod 25, and has a male screw 27a at the lower end as shown in FIG. 7, and this male screw 27a is screwed into the screw hole 25a of the basic rod 25 to be joined. It is used in addition, and as shown in FIGS. 2 and 3, the upper end is dimensioned to a length that reaches the liquid surface 36a of the muddy water 36 when replenished. And the guide rod 2
In No. 0, the basic rod 25 is arranged so as to extend to the subsequent block side, and a mounting bolt 28 (see FIG. 4) inserted into the mounting hole 22b of the steel plate 22 is screwed into the insert nut 13 so that both sides of the front end of each block are Fixed to.

The guide pipe 30 is shown in FIGS. 4, 8 and 9.
As shown in FIG. 5, an opening 32 is provided along the generatrix direction over the entire length of a steel pipe 31 having a circular cross section, and guide plates 33 parallel to each other are integrally provided in the opening 32. The openings 32 face outward on both sides of the position closer to each other, the upper and lower end surfaces are arranged flush with the upper and lower outer surfaces of the block, respectively, and the tip surface 33a of the guide plate 33 is flush with the side surface of the block along the vertical direction. It is embedded, the inner diameter is sufficiently larger than the outer diameter of the basic rod 25, and the guide plate 33
Are dimensioned so that the spacing between the inner surfaces of the is sufficiently larger than the thickness of the spacer 24.

Next, an example of the block arranging and constructing method according to the present invention will be described. First, the steel plate rod 21 is attached to the preceding block 11, and the replenishment rod 27 is connected to the basic rod 25. Muddy water 36 to bury block 11
The inner threads of a plurality of round steels 40 having a male thread not shown at the bottom are screwed into the respective insert nuts 14, and the upper ends of the round steels 40 are engaged with the plurality of beams 41 temporarily installed on the ground at the burying place. Then, the block 11 is suspended and stopped at a predetermined position.

Next, a steel plate rod 21 is attached to the succeeding block 12.
And the connecting rod 27 is attached, and the guide pipe 30 of the subsequent block 12 is fitted above the outer periphery of the connecting rod 27 connected to the basic rod 25 of the block 11 above.
The block 12 is gently buried to a predetermined position while being guided by the connecting rod 27 and the basic rod 25. When the block 12 is completely installed, the replenishment rod 27 attached to the block 11 can be rotated on the liquid surface 36a and removed to be attached to the third block for use.

In the above-mentioned construction, as has already been carried out, the box-type conduit to be buried in the ground is sealed at both ends of each block with a removable cover plate after construction. The block is submerged while injecting water from the water injection port provided in. In addition, manholes are provided at arbitrary positions in the blocks that are continuously arranged. When the blocks have been arranged to a predetermined length, the muddy water is solidified or concrete is poured to solidify the surroundings. After pumping out the water from the manhole, make a hole in the cover plate of the adjacent block,
Pour water into the block with the manhole, pump up more water, and when the water in the adjacent block runs out, remove the entire cover plate. Hereinafter, this is sequentially repeated.

The effects of the first embodiment of the present invention are as follows. Since the steel plate rod 21 of the guide rod 20 is provided on the side surface of the block and the guide pipe 30 is provided close to the side portion of the block, it can be applied to a block having a relatively thin wall thickness. Since the connecting rod 27 projects above the muddy water surface 36a, it is easy to fit the guide pipe 30 on the outer periphery thereof. After the construction work is completed, the rod 27 can be detached by simply rotating it at the top. Adjacent blocks are connected to each other by the guide rod 20 and the guide pipe 30, which further has a water blocking effect and prevents the solidifying agent from penetrating into the blocks.

A second embodiment of the present invention will be described with reference to FIG. 10 by taking the case of constructing an underground wall as an example. The same parts as those in the first embodiment are designated by the same reference numerals, and the duplicate description will be omitted. In the case of the second embodiment, each of the blocks 11 and 12 is a single block, and both end faces 11a and 12a are oriented vertically, and the steel plate rod 21 of the guide rod 20 is fixed to the side face between the both end faces. At the same time, the first point is that a guide pipe 30 is embedded vertically between both end faces, and a plurality of insert nuts 14 that are screwed into male screws (not shown) of round steel are embedded upward and flush with the upper end face. Is different from the embodiment described above.

In such a plurality of blocks, the end faces are oriented vertically, and the blocks are arranged in the lateral direction continuously, and the first stage is installed as in the case of the first embodiment.
Position and stack on the block of the step and install it in the same way, repeat this in sequence and arrange and install the blocks of the required number and the number of steps until the predetermined length and the required height are reached. The underground wall is formed so as to have a cylindrical shape in the vertical direction. The outside of the block is waterproofed by solidifying muddy water or placing concrete in the same manner as described above.

Water in each hollow portion is pumped up by a pump, the inside is emptied, a reinforcing bar cage or the like is put therein as a necessary amount of reinforcing material, and concrete is poured so as to be integrated vertically. When a block of the box culvert 10 is continuously installed and an edge cut occurs due to a problem in excavation or the like, a plurality of blocks are connected using a PC steel rod or a reinforcing bar.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. For example, as shown in FIG.
It is also possible to construct an underground wall with two boxes as one block. In this case, it is sufficient to provide guide rods and guide pipes on both sides for every two adjacent blocks, and blocks with three or more stations. May be one block. Further, the guide rod, the guide pipe and others may be made of materials other than steel.

[0019]

The present invention of claim 1 according to the present invention is attached to side the guide rod near the end of the preceding block, a guide pipe for guiding the rod engages the succeeding block is provided, the guide on the outer circumference of the guide rod pipe Since the two blocks are connected by loosely fitting, there is an effect that it can be applied to a relatively thin-walled box culvert. According to the invention of claim 2, the preceding block is guided by the guide rod. On the other hand, since the upper end of the guide rod can be exposed above the liquid surface when arranging the subsequent blocks, the subsequent blocks can be easily and accurately arranged and constructed even in the mud construction method, and the upper part of the guide rod can be installed. Since it can be removed, it has an excellent effect that no protruding metal fittings or the like remain after the construction.

According to the present invention as set forth in claim 3, a guide rod is detachably connected to the leading block in an upward direction,
A guide pipe is fixed to the succeeding block, the preceding block is hung in the underground hole, and the guide pipe is loosely fitted to the outer periphery of the guide rod above the preceding block and guided by the guide rod to follow the preceding block. By suspending the block in the underground hole, even in the mud construction method, subsequent blocks can be easily and accurately arranged and constructed one after another, and the guide rod connected detachably upward allows
The guide rod can be removed, and the effect is that no protruding metal fittings or the like remain after construction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connection structure of a plurality of blocks according to a first embodiment of the present invention.

FIG. 2 is a side view showing a schematic configuration of a method of arranging and constructing a plurality of blocks according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 showing a schematic configuration of a method of arranging and constructing a plurality of blocks according to the first embodiment of the present invention.

FIG. 4 is an enlarged plan view of an essential part of the connection structure of a plurality of blocks according to the first embodiment of the present invention.

FIG. 5 is a side view showing a steel plate rod in the guide rod according to the embodiment of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a side view showing a replenishment rod in the guide rod according to the embodiment of the present invention.

FIG. 8 is a side view showing a guide pipe according to an embodiment of the present invention.

9 is a plan view of FIG. 8. FIG.

FIG. 10 is a perspective view of a connecting structure of a plurality of blocks according to a second embodiment of the present invention.

FIG. 11 is a perspective view of a connecting structure of a plurality of blocks according to another embodiment of the present invention.

FIG. 12 is a plan view of a conventional block connecting structure.

13 is an enlarged plan view showing a portion surrounded by a circle X in FIG.

[Explanation of symbols]

 10 box culvert 11 preceding block 12 subsequent block 13 insert nut 20 guide rod 21 steel plate rod 22 steel plate 22a adjusting plate 22b mounting hole 24 spacer 25 basic rod 25a screw hole 27 connecting rod 27a male screw 28 mounting bolt 30 guide pipe 31 steel pipe 32 opening Part 33 Guide plate 35 Underground hole

Claims (3)

[Claims] 1. A position of a box culvert adjacent to a mutually opposing surface of a preceding block and a succeeding block adjacent to each other,
A guide rod is attached to the side surface of the preceding block, a guide pipe that engages with the guide rod is provided in the subsequent block, and the guide pipe is loosely fitted to the outer periphery of the guide rod to connect both blocks. A structure in which a plurality of blocks are connected. 2. The connecting structure for a plurality of blocks according to claim 1, wherein the upper portion of the guide rod is detachable. 3. A box culvert at a position close to a mutually opposing surface of a preceding block and a succeeding block adjacent to each other,
A guide rod whose upper part is removable is attached to the preceding block, and a guide pipe is fixed to the following block,
The preceding block is hung in the underground hole, the guide pipe is loosely fitted to the outer periphery of the guide rod above the preceding block, and the succeeding block is grounded to the preceding block while being guided by the guide rod. A method for arranging and constructing a plurality of blocks, which is characterized in that the blocks are hung in a middle hole.