JPH01278610A - Civil engineering structure and building method therefor - Google Patents

Abstract

PURPOSE:To provide a revetment structure on which a high earth pressure is exerted and which facilitates execution of a work, by a method wherein after a heavy body having a sheath pipe is placed on a ground, a pile is driven through the sheath pipe. CONSTITUTION:A heavy body 22 manufactured on a land is placed on a ground 21, a filling region 26 is filled with a heavy body 25, and the heavy body 22 is stabilized. An upper end opening part after filling is covered with a covering plate 30. A pile body 23 is inserted through a sheath pipe 28 and driven in the ground 21. The sheath pipe 28 has load transmission parts 29 making contact with the pile body 23 and located to the arbitrary local parts of the inner surface of the sheath pipe. A top plate 31 is placed on the upper end part of the pile body 23, and covering stones 24 are laid on the ground 21. This method constructs a civil engineering structure 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to civil engineering structures such as sea walls and breakwaters, and their construction methods.

[Prior art] Conventionally, as a civil engineering structure for a seawall etc., the structure shown in Fig. 5 (A)
, the gravity type structure shown in (B), or the pile hole structure shown in FIG. 6 are used.

The gravity type structure is subjected to earth pressure, water pressure, seismic force, etc. (hereinafter referred to as earth pressure, etc.) due to the frictional force and overturning reaction force between the ground 1 and the weight body 2. However, in this gravity type structure, (1) the weight body 2 is not deeply embedded in the ground as shown in Figure 5 (A), or is shallow as shown in Figure 5 (B); If it becomes large, the width becomes excessive, and (2) it is not possible to install a heavy body 2 that is sufficient to receive earth pressure etc. due to restrictions on ground strength, and as a result, sufficient bank protection performance etc. cannot necessarily be ensured.

The pile hole structure is subjected to soil pressure etc. due to the lateral resistance of the pile body 3 driven into the ground l. However, this pile hole structure has disadvantages such as the diameter and number of pile bodies 3 becoming large as the earth pressure to be received increases, making the construction period long and uneconomical.

Furthermore, a bank protection structure as described in Japanese Patent Application Laid-Open No. 108405/1983 has been proposed which combines the above-mentioned gravity type structure and a pile hole structure. This revetment structure is constructed by installing a one-weight body on the ground and attaching antibodies to the heavy body, so that it receives soil pressure, etc. from both the frictional force due to gravity, the falling reaction force, and the lateral resistance of the antibodies. It is something. According to this revetment structure, it is possible to receive large soil pressure, etc., and the revetment performance can be improved.

[Problems to be Solved by the Invention] However, the revetment structure described in the above-mentioned Japanese Patent Application Laid-open No. 58-108405 involves driving antibodies into the ground and then fitting a weight body formed in advance on land to the antibodies. Construction will take place. For this reason, there is a problem of poor workability as shown in (1) and (2) below.

It is necessary that the fitting hole provided in advance in the zero-weight body and the antibody match, and it is necessary to accurately set the position where the antibody is implanted.

It is necessary to enable the fitting hole of the 0 weight body to fit the antibody smoothly, and it is necessary to set the antibody in a straight position.

SUMMARY OF THE INVENTION An object of the present invention is to provide a civil engineering structure that can be subjected to large earth pressure and has good workability, and a construction method thereof.

[Means for Solving the Problems] A civil engineering structure according to claim 1 includes a heavy body that is installed on the ground with a sheath pipe and receives soil pressure etc. due to frictional force with the ground and overturning reaction force. , and an antibody that is inserted into a heavy sheath tube and driven into the ground.

In the civil engineering structure according to a second aspect of the present invention, the weight body includes a wall-like body forming a filling area for one heavy object, and a sheath pipe coupled to the wall-like body.

In the civil engineering structure according to claim 3, the sheath tube has an inner surface with an inner diameter larger than the outer diameter of the antibody, and a load transmitting portion in contact with the outer diameter of the antibody is provided at any local part of the inner surface of the tube. This is something I prepared for.

The method for constructing a civil engineering structure according to claim 4 is such that after a heavy body including a sheath pipe is installed on the ground, an antibody is inserted into the sheath pipe and the antibody is driven into the ground, so that the weight body and the ground are connected. It is designed to receive soil pressure, etc. due to frictional force, falling reaction force, and lateral resistance of the antibody.

The method for constructing a civil engineering structure according to claim 5 is to install a heavy body formed by joining a sheath pipe to a wall-like body on the ground, and place the heavy object in a desired area formed by the wall-like body. After filling, the antibody is inserted into the sheath tube, and this antibody is driven into the ground.
It is designed to receive soil pressure, etc. due to the frictional force between the weight body and the ground, the falling reaction force, and the lateral resistance of the antibody.

[Operation] FIG. 4 is a schematic diagram showing the operation principle of the civil engineering structure 10 to which the present invention is applied. 11 is the ground, 12 is the weight body, 12
A is the sheath tube, and 13 is the antibody.

According to the invention according to claim 1.4, the civil engineering structure lO
In this case, the weight body 12 is equipped with the sheath tube 12A, and the weight body 1
After installing 2 on the ground 11.

Construction can be performed by inserting the pile body 13 into the sheath pipe 12A and driving the pile body 13 into the ground 11. For this reason, ■the pile body 13 is attached to the sheath pipe 12A of the heavy body 12 after the heavy body 12 is installed.
There is no need to accurately set the driving position of the antibody 13. Also, since the pile body 13 is driven in as if guided by the sheath tube 12A of the weight body 12, the pile body There is no need to intentionally set the driving posture of pile body 13 in a straight manner.Furthermore, ■The civil engineering structure 10 is subjected to soil pressure etc. due to both the frictional force and overturning reaction force due to the gravity of the weight body 12 and the lateral resistance of the pile body 13. . In addition, in FIG. 4, W is the gravity of the weight body 12, H is the horizontal force such as soil pressure,
M is the overturning moment, R is the ground reaction force against the weight body 12, ILW is the frictional resistance force against the weight body 12, and F is the pile body 1
3 is the lateral resistance force (horizontal spring force of the ground), H is supported by gW of the weight body 12, M is supported by the overturning reaction force R, which is a part of R of the weight body 12, and is not supported by these. External force is transmitted to the antibody 13 and supported by F. That is, the above-mentioned @ can receive large soil pressure, and the workability is good due to ■ and ■.

Claim? According to the present invention described in , 5, the civil engineering structure 10
In this case, a filling area is formed by the wall-shaped body composing the weight body 12, and heavy items are packed into the filling area of the weight body 12 installed on the ground, so the weight body 12 is securely packed. Can be stably installed.

According to the present invention as set forth in claim 3, the weight body 12 whose structure includes the sheath tube 12A having an inner diameter larger than the outer diameter of the sheath tube 13 is not prevented from moving up and down by the pile body 13, It can function reliably as a gravity type. At this time, soil pressure and the like acting on the weight body 12 is transmitted to the pile body 13 via the load transmission part 12B, and lateral resistance by the pile body 13 can also be ensured.

[Example] Fig. 1 is a schematic diagram showing a civil engineering structure according to an embodiment of the present invention, Fig. 2 is a schematic diagram showing a heavy body, and Fig. 3 is a schematic diagram showing a modification of the heavy body. .

As shown in FIG. 1, the civil engineering structure 20 has a ground (embankment) 2
A breakwater is formed by having a weight body 22 installed on the ground 21 and an antibody 23 driven into the ground 21. 24 is a covering stone.

As shown in FIG. 2, the weight body 22 includes a rectangular cylindrical wall body 27 that forms the filling area 26 of the heavy body 25;
A sheath tube 28 is connected to the sheath tube 28. The antibody 23 is inserted into the sheath tube 28 of the 1-weight bomb 22 and implanted as described above.

The sheath tube 28 of the weight body 22 has an inner surface with an inner diameter larger than the outer diameter of the antibody 23, and is provided with a load transmitting portion 29 in contact with the outer diameter portion of the pile body 23 at an arbitrary local part of the inner surface of the tube. .

30 is a cover plate that covers the upper end opening of the wall-like body 27 that has been filled with filling, and 31 is a top plate provided at the upper end of the antibody 23.

Note that the wall-like body 27 of the weight body 22 may have a cylindrical shape as shown in FIG.

Next, a construction method for the civil engineering structure 20 will be explained. That is, the construction procedure of the civil engineering structure 20 is as follows.

■Manufacture the heavy body 22 on land.

The zero weight body 22 is transported to the underwater installation position, and this heavy body 2 is
2 is installed on the ground 21.

A heavy object 25 such as sand or crushed stone is placed in the filling area 26 of the zero weight object 22.
to stabilize the weight body 22.

(2) Insert the antibody 23 into the sheath tube 28 of the weight body 22 and drive the antibody 23 into the ground 21.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the civil engineering structure 20 includes the weight body 22 and the sheath tube 28. After the weight body 22 is installed on the ground 21, the antibody 23 is inserted into the sheath tube 28, and the antibody 23 is inserted into the sheath tube 28. It can be constructed by driving 23 into the ground 21. For this reason, (1) the antibody 23 is inserted into the sheath tube 28 of the weight body 22 after the weight body 22 is installed, and there is no need to accurately set the position where the antibody 23 is implanted; Since the antibody 23 is driven in as if guided by the sheath tube 28 of the body 22, there is no need to set the driving posture of the antibody 23 straight. Falling reaction force and antibody 2
It is subjected to soil pressure, etc. due to both of the lateral resistances in step 3. That is,
■ Can receive large soil pressure, etc.
This improves workability.

Therefore, according to the above embodiment, the one-weight body 22 can be configured in accordance with the ground strength, and the lack of pressure receiving capacity of the heavy body 22 can be supported by the pile #23. Therefore, for example, even if the ground 21 is relatively soft, the heavy body 2
By installing the heavy body 22, the danger of sinking can be avoided and the heavy body 22 can be installed.
By using Antibody 23 in combination with Antibody 23, economical and strong seawalls, breakwaters, etc. can be constructed.

In addition, the civil engineering structure 20 forms a filling area 26 with the wall-like body 27 constituting the weight body 22, and inserts the heavy object 25 into the filling area 26 of the weight body 22 installed on the ground 21. Since it is packed tightly, the heavy body 22 can be reliably and stably installed.

Further, according to the above embodiment, the weight body 22, which includes the sheath tube 28 having an inner diameter larger than the outer diameter of the antibody 23, is not prevented from moving up and down by the antibody 23, and can be reliably used as a gravity type. Can function. At this time,! Earth pressure and the like acting on the mass 22 is transmitted to the antibody 23 via the load transmission section 29, and lateral resistance by the antibody 23 can also be ensured.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a civil engineering structure that can receive large earth pressure, etc. and has good workability, and a construction method thereof.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a civil engineering structure according to an embodiment of the present invention, Fig. 2 is a schematic diagram showing a heavy body, Fig. 3 is a schematic diagram showing a modification of the heavy body, and Fig. 4 is a schematic diagram showing a modification of the heavy body. A schematic diagram showing the working principle of a civil engineering structure to which the invention is applied, Figures 5 (A) and CB) are schematic diagrams showing a conventional gravity type structure, and Figure 6 shows a conventional pile type Tachizukuri structure. It is a schematic diagram. 10.20...Civil engineering structure. 11.21... Ground, 12.22... Heavy object, 12A... Sheath pipe, 12B... Load transmission part, 13.23... Pile body, 25... Heavy object, 26. ... Filling region, 27 ... Wall-shaped body, 28 ... Sheath pipe, 29 ... Load transmission part. Agent Patent Attorney Osamu Shiokawa Figure 1 Figure 2

Claims (5)

[Claims] (1) It has a heavy body that is equipped with a sheath and installed on the ground and receives soil pressure etc. due to frictional force with the ground and fall reaction force, and an antibody that is inserted through the sheath of the heavy body and driven into the ground. A civil engineering structure. (2) The civil engineering structure according to claim 1, wherein the heavy body comprises a wall-like body forming a filling area for the heavy object, and a sheath pipe coupled to the wall-like body. (3) The sheath tube has an inner surface with an inner diameter larger than the outer diameter of the antibody, and a load transmitting portion in contact with the outer diameter of the antibody is provided at any local part of the inner surface of the tube. Civil engineering structure. (4) After installing a heavy body equipped with a sheath tube on the ground, insert an antibody into the sheath tube and drive this antibody into the ground,
A construction method for civil engineering structures that receives soil pressure due to the frictional force between the heavy body and the ground, the overturning reaction force, and the lateral resistance of antibodies. (5) A heavy body consisting of a wall-like body and a sheath pipe is installed on the ground, and after filling the filling area formed by the wall-like body with the heavy object, the antibody is applied to the sheath pipe. A construction method for civil engineering structures in which the antibodies are inserted into the ground and subjected to soil pressure due to the frictional force between the heavy body and the ground, the fall reaction force, and the lateral resistance of the antibodies.