Connecting structure of three rows of fender posts

Abstract

The utility model relates to a connecting structure of three rows of fender posts. The connecting structure solves the problem that an existing three-row pile foundation pit supporting structure is prone to being insufficient in rigidity and strength under the condition of soft soil. The structure comprises a first row of fender posts, a second row of fender posts and a third row of fender posts which are sequentially arranged outwards from the direction of a foundation pit, each of the first row of fender posts, the second row of fender posts and the third row of fender posts comprises a plurality of pile bodies, the number of the pile bodies of the first row of fender posts, the second row of fender posts and the third row of fender posts is 4: 2: 1, and crown beams are arranged between the pile bodies in the same row. An upper straining beam and a lower straining beam are arranged between the aligned pile bodies of the first row of fender posts and the second row of fender posts, and a straining beam is arranged between the tops of the aligned pile bodies of the second row of fender posts and the third row of fender posts. The rigidity and the strength of the three rows of piles in the adjacent rows are enhanced, and meanwhile, the arrangement rapidness of the reinforcement cage for construction of the top beam and straining beam structure is improved.

Description

Technical Field

[0001] The utility model belongs to the field of engineering construction and relates to a construction support structure, in particular to a connection structure of three rows of retaining piles. Background Art

[0002] With the rapid development of underground space, the environment surrounding foundation pits has become increasingly complex, the excavation area and depth have continued to expand, and a variety of support methods have emerged. Controlling the deformation of deep foundation pit retaining structures and their impact on adjacent buildings and structures in the complex and sensitive surrounding environment is a critical and urgent technical issue that needs to be addressed.

[0003] In the case of adjacent sensitive environmental conditions, existing foundation pit support structures usually adopt underground continuous walls + multiple supports, single-row piles or double-row piles + multiple supports, etc. This type of support has strong supporting force and retaining capacity and has been widely used in foundation pit support, especially in soft soil conditions. However, this horizontal support structure is a temporary structure, and a large amount of construction waste will be generated when the support is removed. At the same time, the impact of "removal and replacement of support" on the surrounding environment must also be considered. When adjacent to sensitive buildings, the support structure is usually required to adopt static cutting methods, which greatly increases costs. The horizontal support structure often conflicts with earth excavation. Generally, earth excavation is required to reach the bottom of the support. After the constructed support reaches the design strength, earth excavation can continue downward, reducing construction efficiency and prolonging the exposure time of the foundation pit.

[0004] In multi-row retaining pile structures, tension beams are installed between adjacent rows of retaining piles. However, when soil conditions are poor, a single tension beam may lack strength and rigidity, leading to settlement and deformation. Furthermore, the construction of multi-row pile supports must also consider the ease of support and removal. Summary of the Invention

[0005] The purpose of this utility model is to solve the problem that the existing three-row pile foundation pit support structure is prone to insufficient rigidity and strength under soft soil conditions, while meeting the requirements of the speed of the three-row pile support and dismantling process, and providing a connection structure of three rows of retaining piles to enhance the rigidity and strength of three adjacent rows of piles, while improving the speed of arrangement and dismantling of steel cages in the construction of crown beams and tension beam structures.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a connection structure of three rows of retaining piles, including a first row of retaining piles, a second row of retaining piles, and a third row of retaining piles arranged in sequence from the foundation pit direction outward, the first row of retaining piles, the second row of retaining piles, and the third row of retaining piles respectively include a plurality of pile bodies, and the number of pile bodies of the first row of retaining piles, the second row of retaining piles, and the third row of retaining piles is 4:2:1, crown beams are arranged between pile bodies in the same row, upper and lower tension beams are arranged between the pile bodies of the first row of retaining piles and the second row of retaining piles aligned with each other, and a tension beam is arranged between the tops of the pile bodies of the second row of retaining piles and the third row of retaining piles aligned with each other.

[0007] In this device, a crown beam is set in the same row of three rows of piles to ensure lateral integrity, and tension beams are set between adjacent rows of three rows of piles to increase integrity and rigidity. Two upper and lower tension beams are set between the aligned piles of the first row of retaining piles and the second row of retaining piles to form a frame structure, which increases the rigidity of the first row of retaining piles and prevents the first row of retaining piles from tilting or settling.

[0008] Preferably, the upper tension beam between the first row of retaining piles and the second row of retaining piles is flush with the tension beam at the top of the pile bodies of the second row of retaining piles and the third row of retaining piles that are aligned with each other.

[0009] Preferably, the pile body is provided with a pile body reinforcement cage, a beam end reinforcement cage is provided on top of the pile body reinforcement cage, a beam body reinforcement cage is provided in the tension beam and the crown beam, a first reinforcement joint and a second reinforcement joint are provided at the junction of the beam end reinforcement cage and the beam body reinforcement cage, and a reinforcement quick joint is provided between the first reinforcement joint and the second reinforcement joint. After the beam end reinforcement cage is sleeved on top of the pile body reinforcement cage, it is quickly connected to the beam body reinforcement cage using a reinforcement quick joint. The reinforcement quick joint can be quickly destroyed when dismantling the brace, facilitating the cutting operation.

[0010] Preferably, the steel bar quick joint includes a welded joint and a socket joint, the welded joint is welded to the end of the first steel bar joint, and the outer end of the welded joint is longer than the end of the first steel bar joint, a notch is provided on one side of the outer end of the welded joint, and a pressure plate is provided at the notch, the end of the second steel bar joint is inserted into the outer end of the welded joint, and the socket joint is socketed and fixed to the outer end of the welded joint.

[0011] Preferably, the butt joint surface between the socket joint and the welded joint is a conical surface, and the conical surface is connected by a conical thread.

[0012] Preferably, the end of the socket joint away from the welding joint is provided with a hexagonal section for wrench operation.

[0013] Preferably, after the socket joint and the welded joint are tightened, the socket joint is welded to the second steel bar joint.

[0014] Preferably, the beam end reinforcement cage is provided with a first reinforcement joint on one side, two sides, three sides or four sides.

[0015] Preferably, the first steel bar joints and the second steel bar joints are aligned and arranged in four groups, and the first steel bar joints and the second steel bar joints are arranged in a matrix.

[0016] The utility model enhances the rigidity and strength of three adjacent rows of piles, while improving the speed of arranging and removing the reinforcement cages in the construction of the crown beam and tension beam structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a three-row pile elevation view of the utility model.

[0019] Figure 2 It is a three-row pile plan of the utility model.

[0020] Figure 3 This is a schematic diagram of the distribution structure of a steel cage of the present utility model.

[0021] Figure 4 This is a split structural diagram of a beam body reinforcement cage and a beam end reinforcement cage of the utility model.

[0022] Figure 5 This utility model is a Figure 4 Top view of the structure.

[0023] Figure 6 The utility model is a schematic diagram of the split structure of a steel bar quick connector.

[0024] Figure 7 This is a connection structure diagram of a steel bar quick connector of the present utility model.

[0025] Figure 8 This is a structural diagram of a beam end reinforcement cage of the utility model in which first reinforcement joints are arranged on both sides.

[0026] Figure 9 This is a structural diagram of a beam end reinforcement cage of the utility model in which first reinforcement joints are arranged on three sides.

[0027] In the figure: 1. First row of retaining piles, 2. Second row of retaining piles, 3. Third row of retaining piles, 4. Tension beam, 5. Crown beam, 6. Pile body, 7. Pile body reinforcement cage, 8. Beam body reinforcement cage, 9. Beam end reinforcement cage, 10. First reinforcement joint, 11. Second reinforcement joint, 12. Welded joint, 13. Pressure plate, 14. Socket joint. DETAILED DESCRIPTION

[0028] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0029] Example: A connection structure of three rows of retaining piles, such as Figure 1 、 2 As shown. This structure includes a first row of retaining piles 1, a second row of retaining piles 2, and a third row of retaining piles 3, which are arranged in sequence from the foundation pit outward. The first row of retaining piles 1, the second row of retaining piles 2, and the third row of retaining piles 3 each include a plurality of pile bodies 6. The number of pile bodies in the first row of retaining piles 1, the second row of retaining piles 2, and the third row of retaining piles 3 is 4:2:1. Crown beams 5 are set between the pile bodies in the same row. Upper and lower tension beams 4 are set between the pile bodies of the first row of retaining piles 1 and the second row of retaining piles 2 that are aligned with each other. A tension beam 4 is set between the tops of the pile bodies of the second row of retaining piles 2 and the third row of retaining piles 3 that are aligned with each other. The upper tension beam between the first row of retaining piles 1 and the second row of retaining piles 2 is flush with the tension beam 4 at the tops of the pile bodies of the second row of retaining piles 2 and the third row of retaining piles 3 that are aligned with each other.

[0030] like Figure 3-5 As shown, the pile body 6 is provided with a pile body reinforcement cage 7, a beam end reinforcement cage 9 is provided on top of the pile body reinforcement cage, a beam body reinforcement cage 8 is provided in the tension beam and the crown beam, and a first reinforcement joint 10 and a second reinforcement joint 11 are provided at the junction of the beam end reinforcement cage and the beam body reinforcement cage, and a reinforcement quick connector is provided between the first reinforcement joint 10 and the second reinforcement joint 11. The first reinforcement joint 10 and the second reinforcement joint 11 are arranged in four groups in an aligned manner, and the first reinforcement joints and the second reinforcement joints are arranged in a matrix.

[0031] like Figure 6 、 7 As shown, the steel bar quick joint includes a weld joint 12 and a sleeve joint 14. The weld joint 12 is welded to the end of the first steel bar joint 10, and the outer end of the weld joint 12 is longer than the end of the first steel bar joint 10. A notch is set on one side of the outer end of the weld joint 10, and a pressure plate 13 is set at the notch. The end of the second steel bar joint 11 is inserted into the outer end of the weld joint, and the sleeve joint 14 is sleeved and fixed on the outer end of the weld joint 12. The butt joint surface between the sleeve joint 14 and the weld joint 12 is a conical surface, and the conical surface is connected by a conical thread. The end of the sleeve joint 14 away from the weld joint is provided with a hexagonal section for wrench operation. After the sleeve joint 14 and the weld joint are tightened, the sleeve joint 14 is welded to the second steel bar joint 11.

[0032] like Figure 3 、 8 As shown in FIG9 , the beam end reinforcement cage 9 is provided with first reinforcement joints 10 on one side, two sides, or three sides. The beam end reinforcement cage 9 can also be provided with first reinforcement joints 10 on four sides, which is not shown in this example.

Claims

1. A connection structure of three rows of retaining piles, comprising a first row of retaining piles, a second row of retaining piles, and a third row of retaining piles arranged in sequence from the foundation pit outward, wherein the first row of retaining piles, the second row of retaining piles, and the third row of retaining piles each comprise a plurality of pile bodies, and characterized in that: The number of piles in the first row, the second row and the third row is 4:2:

1. Crown beams are set between the piles in the same row. Upper and lower tension beams are set between the aligned piles of the first and second rows. One tension beam is set between the tops of the aligned piles of the second and third rows.

2. The connection structure of three rows of retaining piles according to claim 1, characterized in that: The upper tension beam between the first row of retaining piles and the second row of retaining piles is flush with the tension beam on the top of the pile bodies of the second row of retaining piles and the third row of retaining piles that are aligned with each other.

3. The connection structure of three rows of retaining piles according to claim 1, characterized in that: A pile body steel cage is provided in the pile body, a beam end steel cage is provided on the top of the pile body steel cage, a beam body steel cage is provided in the tension beam and the crown beam, a first steel bar joint and a second steel bar joint are provided at the joint between the beam end steel cage and the beam body steel cage, and a steel bar quick joint is provided between the first steel bar joint and the second steel bar joint.

4. The connection structure of three rows of retaining piles according to claim 3, characterized in that: The steel bar quick joint includes a welding joint and a sleeve joint. The welding joint is welded to the end of the first steel bar joint, and the outer end of the welding joint is longer than the end of the first steel bar joint. A notch is provided on one side of the outer end of the welding joint, and a pressure plate is provided at the notch. The end of the second steel bar joint is inserted into the outer end of the welding joint, and the sleeve joint is sleeved and fixed to the outer end of the welding joint.

5. The connection structure of three rows of retaining piles according to claim 4, characterized in that: The butt joint surfaces of the socket joint and the welded joint are conical surfaces, and the conical surfaces are connected by conical threads.

6. A connection structure of three rows of retaining piles according to claim 4 or 5, characterized in that: An end of the socket joint away from the welding joint is provided with a hexagonal section for wrench operation.

7. The connection structure of three rows of retaining piles according to claim 4 or 5, characterized in that: After the socket joint and the welded joint are tightened, the socket joint is welded to the second steel bar joint.

8. The connection structure of three rows of retaining piles according to claim 3, 4 or 5, characterized in that: The beam end reinforcement cage is provided with first reinforcement joints on one side, two sides, three sides or four sides.

9. The connection structure of three rows of retaining piles according to claim 3, 4 or 5, characterized in that: The first steel bar joints and the second steel bar joints are aligned and arranged in four groups, and the first steel bar joints and the second steel bar joints are arranged in a matrix.

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