Composite segments and earth retaining structures

Abstract

To provide a composite segment and an earth-retaining structure, which inhibit slippage between a steel shell and filler, while securing a space inside the steel shell for reinforcement bars to be placed in.SOLUTION: A composite segment in the present disclosure is a composite segment that constitutes a cylindrical body to be buried underground as an earth-retaining structure, and comprises: a pair of main girders that extend in the peripheral direction of the cylindrical body with their plate surfaces facing each other in the axial direction of the cylindrical body; a pair of joint plates that are connected to both peripheral ends of each of the pair of main girders; a skin plate that is connected, on the outer peripheral side of the cylindrical body, to a frame body constituted by the pair of main girders and the pair of joint plates; and a slippage-preventing member that is connected to each of the pair of main girders and protrudes from one of the main girders towards the other main girder. The slippage-preventing member comprises a first part arranged with its plate surface aligned to the peripheral direction of the cylindrical body and a second part arranged with its plate surface aligned to the radial direction, the first part and the second part being formed as a single body.SELECTED DRAWING: Figure 3

Claims

1. A composite segment that constitutes a cylindrical body buried underground as a retaining wall structure, A pair of main beams extending in the circumferential direction of the cylindrical body and arranged with their plate surfaces facing each other in the axial direction of the cylindrical body, A pair of joint plates joined to both ends in the circumferential direction of each of the pair of main girders, A skin plate is joined to the outer circumference of the cylindrical body to the frame composed of the pair of main girders and the pair of joint plates, Each of the pair of main girders is joined to a shearing member that protrudes from one main girder toward the other main girder, The aforementioned anti-slip member is The first portion of the plate surface is arranged along the circumferential direction, The plate surface comprises a second portion arranged along the radial direction of the cylindrical body, The first part and the second part are formed as a single unit. The aforementioned anti-slip member includes a plurality of anti-slip members arranged symmetrically in the circumferential direction, The first portion of the plurality of anti-slip members on one side in the circumferential direction, The first portion of the plurality of anti-slip members on the other side in the circumferential direction is, Extending away from each other from the ends connected to the second portion, Synthetic segment.

2. The unit comprises a reinforcing bar unit positioned between the pair of main girders, The aforementioned reinforcing unit is The system includes a first force distribution reinforcement extending in the axial direction, Both ends of the first muscle that distributes force are The composite segment according to claim 1, which is placed on the plate surface of the first portion of the anti-slip member.

3. The aforementioned anti-slip member is A through hole is formed in the first portion. The first muscle that distributes force is, The main body portion extending in the axial direction, The main body comprises insertion portions extending radially from both ends of the main body, The aforementioned insertion part is, The composite segment according to claim 2, inserted into the through hole.

4. The aforementioned reinforcing unit is The main reinforcement extending in the circumferential direction, It comprises a second distribution reinforcement extending in a direction intersecting the main reinforcement, The composite segment according to claim 2 or 3, wherein the main reinforcement and the second distribution reinforcement are joined together.

5. The first muscle that distributes force is, The composite segment according to claim 4, which is joined to the main reinforcement.

6. The aforementioned anti-slip member is A composite segment according to any one of claims 1 to 3, which is formed in an L-shape when viewed from the axial direction.

7. A retaining structure formed by combining a plurality of composite segments according to any one of claims 1 to 3 in the circumferential and axial directions.

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