Double-row pile gravity type permanent soil retaining structure

Abstract

The utility model discloses a double-row pile gravity type permanent soil retaining structure, and particularly relates to the technical field of double-row pile type retaining walls, the double-row pile type retaining wall comprises a double-row pile type retaining wall and a gravity type soil retaining assembly, the double-row pile type retaining wall comprises a plurality of front-row piles, a plurality of rear-row piles, a connecting beam and a concrete layer, the plurality of front-row piles and the plurality of rear-row piles are all installed at the bottom end of the connecting beam, and the gravity type soil retaining assembly is installed at the bottom end of the connecting beam. The concrete layer is installed at the top end of the connecting beam, the gravity type soil retaining assembly comprises two soil retaining wall bodies, a second reinforcing steel bar layer and a base layer, and the two soil retaining wall bodies and the second reinforcing steel bar layer are all installed at the top end of the base layer. The first reinforcing steel bar layer and the second reinforcing steel bar layer have good tensile performance, the structural strength of the retaining wall can be remarkably improved, when the double-row piles and the gravity type retaining wall jointly act, lateral force of a soil body is more reasonably distributed between the double-row piles and the gravity type retaining wall, pressure borne by a single structure is relieved, and the service life of the retaining wall is prolonged. The safety and economical efficiency of the structure are improved, and the overall stability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to double-row pile type retaining wall technical field, more specifically, the utility model relates to double-row pile gravity type permanent retaining structure. BACKGROUND

[0002] Double-row pile type retaining wall is a supporting structure, which is composed of two rows of vertical micropiles and a pile top corbel beam to form a space portal type retaining structure. When the double-row pile is combined with the gravity type retaining wall, the lateral force can be more reasonably distributed, the pressure borne by the single structure is reduced, and the bearing capacity and anti-deformation capacity of the structure are improved. The existing double-row pile is usually a vertical cantilever structure, which is mainly used in temporary foundation pit supporting engineering. However, in the use of high slope and even super high slope, there are often problems such as large displacement of the pile top, large settlement of the soil outside the pit, and insufficient overall rigidity.

[0003] According to the search, the Chinese patent with the publication number CN217923609U discloses a supporting structure combining double-row piles with a permanent retaining wall. The supporting structure is provided with a retaining wall above the double-row piles, and multiple layers of double-layer geogrids are arranged in the retaining wall. The geogrids play the role of reinforcement bars, and the multiple layers of geogrids are arranged horizontally, which can reduce the active soil pressure behind the wall.

[0004] The above-mentioned double-row pile type retaining wall includes front-row piles, rear-row piles, and connecting beams, and the connecting beams also serve as the wing wall bottom plates. However, the double-row pile type retaining wall is easily affected by the overturning moment, and cannot provide sufficient stability under certain geological conditions (such as when the foundation bearing capacity is low). UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a double-row pile gravity type permanent retaining structure, which aims to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double-row pile gravity type permanent retaining structure, which includes a double-row pile type retaining wall and a gravity type retaining assembly. The double-row pile type retaining wall includes multiple front-row piles, multiple rear-row piles, connecting beams, and a concrete layer. The multiple front-row piles and the multiple rear-row piles are installed at the bottom end of the connecting beams. The concrete layer is installed at the top end of the connecting beams. The gravity type retaining assembly includes two retaining wall main bodies, a second reinforcing steel layer, and a base layer. The two retaining wall main bodies and the second reinforcing steel layer are installed at the top end of the base layer, and the second reinforcing steel layer is located between the two retaining wall main bodies.

[0007] Further, the top end of the connecting beam is fixedly installed with a first reinforcing steel layer, and the first reinforcing steel layer is filled with concrete.

[0008] Further, the plurality of front piles are provided with cement-soil mixing piles, and the cement-soil mixing piles are installed at the bottom end of the coupling beam.

[0009] Further, the second reinforcing steel layer is filled with concrete between the two retaining wall bodies.

[0010] Further, the second reinforcing steel layer is provided with a plurality of drainage pipes, and one end of the plurality of drainage pipes penetrates one of the retaining wall bodies.

[0011] It can be seen that the above technical scheme effectively drains the water in the soil behind the wall.

[0012] Further, the base layer is built by concrete blocks.

[0013] It can be seen that the above technical scheme has good durability and stability, and is suitable for various geological conditions.

[0014] Further, the base layer is provided with a gravel layer at the bottom, and the gravel layer is composed of multiple layers of sand and gravel with different particle sizes.

[0015] It can be seen that the above technical scheme has good drainage performance.

[0016] The technical effects and advantages of the utility model are as follows:

[0017] 1. The first reinforcing steel layer and the second reinforcing steel layer have good tensile properties, which can significantly improve the structural strength of the retaining wall. When the double-row piles and the gravity retaining wall work together, the lateral force of the soil is more reasonably distributed between the two, reducing the pressure borne by the single structure and improving the safety and economy of the structure. The overall stability is good.

[0018] 2. The utility model is provided with a plurality of drainage pipes, which can effectively drain the water in the soil behind the wall, thereby maintaining the dry state of the soil. The gravel layer has good drainage performance and can quickly drain the accumulated water behind the wall, prevent water accumulation behind the wall, and also disperse the load transmitted by the wall to a larger area, reducing the local pressure borne by the base layer. The structure is simple and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0019] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the utility model, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose of the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0020] Figure 1 It is the whole structure schematic view of the utility model;

[0021] Figure 2 It is the whole structure rear view of the utility model;

[0022] Figure 3 It is the front row pile and cement soil mixing pile assembly structure schematic view of the utility model;

[0023] Figure 4 It is the gravity type soil retaining assembly partial structure schematic view of the utility model.

[0024] In the drawing: 1, front row pile; 2, rear row pile; 3, connecting beam; 4, concrete layer; 5, first reinforcing steel layer; 6, gravity type soil retaining assembly; 7, cement soil mixing pile; 601, soil retaining wall main body; 602, second reinforcing steel layer; 603, base layer; 604, gravel layer; 605, drainage pipe. DETAILED DESCRIPTION

[0025] The embodiments of the utility model will be described by specific examples below, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] Referring to the drawings accompanying Figures 1-4 The double-row pile gravity type permanent soil retaining structure of the embodiment includes a double-row pile type soil retaining wall and a gravity type soil retaining assembly 6. The double-row pile type soil retaining wall includes a plurality of front row piles 1, a plurality of rear row piles 2, a connecting beam 3 and a concrete layer 4. The plurality of front row piles 1 and the plurality of rear row piles 2 are both installed at the bottom end of the connecting beam 3. The concrete layer 4 is installed at the top end of the connecting beam 3. The gravity type soil retaining assembly 6 includes two soil retaining wall main bodies 601, a second reinforcing steel layer 602 and a base layer 603. The two soil retaining wall main bodies 601 and the second reinforcing steel layer 602 are both installed at the top end of the base layer 603, and the second reinforcing steel layer 602 is located between the two soil retaining wall main bodies 601.

[0027] Further, the top end of the connecting beam 3 is fixedly installed with a first reinforcing steel layer 5, and the first reinforcing steel layer 5 is filled with concrete. The plurality of front row piles 1 are both provided with cement soil mixing piles 7, and the plurality of cement soil mixing piles 7 are both installed at the bottom end of the connecting beam 3.

[0028] Further, the second reinforcing steel layer 602 is filled with concrete between the two retaining wall bodies 601, a plurality of drainage pipes 605 are installed on the second reinforcing steel layer 602, one end of the plurality of drainage pipes 605 penetrates one of the two retaining wall bodies 601, and the base layer 603 is built by concrete blocks, the bottom of the base layer 603 is provided with a gravel layer 604, and the gravel layer 604 is composed of multiple layers of sand and gravel with different particle sizes.

[0029] The use method of the embodiment is:

[0030] In use, the plurality of front rows of piles 1 are arranged alternately with long and short piles, which can more effectively resist the landslide thrust, because the interaction of the short piles and the long piles can disperse and balance the earth pressure, the plurality of rear rows of piles 2 are long piles, which can provide a larger supporting area, and cooperate with the plurality of front rows of piles 1 to optimize the stress distribution of the whole structure, the coupling beam 3 can connect the plurality of front rows of piles 1 and the plurality of rear rows of piles 2, thereby enhancing the integrity and stability of the structure, the first reinforcing steel layer 5 and the second reinforcing steel layer 602 have good tensile properties, which can significantly improve the structural strength of the retaining wall, when the double-row piles and the gravity retaining wall cooperate, the lateral force of the soil is more reasonably distributed between the two, reducing the pressure borne by the single structure, improving the safety and economy of the structure, and the overall stability is good.

[0031] The top of the first reinforcing steel layer 5 is provided with a coarse sand layer to improve the drainage performance of the double-row piles, by arranging a plurality of drainage pipes 605, the water in the soil behind the wall can be effectively drained, so that the dry state of the soil is maintained, by timely removing the accumulated water behind the wall and reducing the adverse factors such as frost heaving pressure, the service life of the retaining wall can be prolonged, and the occurrence of safety accidents such as wall cracks or overturning caused by poor drainage can be reduced, the gravel layer 604 has good drainage performance, can quickly drain the accumulated water behind the wall, prevent water from accumulating behind the wall, and can also disperse the load transmitted by the wall to a larger area, reduce the local pressure borne by the base layer 603, and the structure is simple and convenient to use.

[0032] The contents not described in detail in the specification all belong to the prior art known to those skilled in the art, the above is only a preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Double-row pile gravity permanent retaining structure, characterized by: The invention comprises a double-row pile retaining wall and a gravity retaining assembly (6), wherein the double-row pile retaining wall comprises a plurality of front-row piles (1), a plurality of rear-row piles (2), a connecting beam (3) and a concrete layer (4), wherein the plurality of front-row piles (1) and the plurality of rear-row piles (2) are all installed at the bottom end of the connecting beam (3), and the concrete layer (4) is installed at the top end of the connecting beam (3); and the gravity retaining assembly (6) comprises two retaining wall bodies (601), a second reinforcing steel bar layer (602) and a base layer (603), wherein the two retaining wall bodies (601) and the second reinforcing steel bar layer (602) are all installed at the top end of the base layer (603), and the second reinforcing steel bar layer (602) is located between the two retaining wall bodies (601).

2. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: A first reinforcing steel bar layer (5) is fixedly mounted on the top end of the coupling beam (3), and the first reinforcing steel bar layer (5) is filled with concrete.

3. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: Cement soil mixing piles (7) are provided between the plurality of front-row piles (1), and the plurality of cement soil mixing piles (7) are installed at the bottom end of the connecting beam (3).

4. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: Concrete is filled between the second reinforcement steel layer (602) and the two retaining wall bodies (601).

5. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: A plurality of drainage pipes (605) are installed on the second reinforcement steel layer (602), and one end of each of the plurality of drainage pipes (605) passes through one of the retaining wall bodies (601).

6. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: The base layer (603) is constructed by concrete blocks.

7. The double-row pile gravity permanent retaining structure according to claim 1 is characterized in that: A crushed stone layer (604) is provided at the bottom of the base layer (603), and the crushed stone layer (604) is composed of multiple layers of sand and crushed stone of different particle sizes.

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