A shoring system

Abstract

The utility model discloses a kind of fender pile support systems, which comprises: lattice column, support beam and tie beam, the support beam and tie beam are perpendicular to each other and rely on the lattice column, characterized in that, chamfer reinforcing structure is provided at the connection of the support beam and tie beam and the lattice column, the chamfer reinforcing structure includes chamfer reinforcement, the chamfer reinforcement is configured to form triangular support area between the support beam, tie beam and lattice column. The technical scheme of the present application optimizes the transmission path of force through the triangular node, and ensures the transmission efficiency of force through the continuous reinforcement. The two cooperate together to create a solid and reliable node connection.

Description

Technical Field

[0001] The utility model relates to the technical field of fender pile support, and specifically relates to a fender pile support system. Background Art

[0002] In the construction of deep foundation pit engineering, a concrete support system composed of lattice columns, transverse support beams and longitudinal tie beams is often used to support the side wall of the foundation pit. In the prior art, the support beams and the tie beams are perpendicular to each other and are supported by the lattice columns. Due to the huge self-weight of the two and the foundation pit load they bear, there is a serious stress concentration phenomenon in the joint area where they are connected with the lattice columns.

[0003] The traditional 90-degree vertical connection method makes the joint a weak point of the structure, which is extremely prone to cracking or even fracture under the action of complex loads, leading to instability of the entire support system and potential safety hazards. In addition, at the position of the lattice column, it is difficult to arrange the reinforcements of the support beams and the tie beams, and the reinforcements often need to be cut off to bypass, which affects the integrity of the reinforcements and the pouring quality of concrete, and further weakens the joint strength. Contents of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a fender pile support system and construction method, aiming to overcome at least one related technical problem existing in the background art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions: In a first aspect, the present application provides a fender pile support system, comprising a lattice column, a support beam and a tie beam, wherein the support beam and the tie beam are arranged perpendicular to each other and supported on the lattice column, a chamfer reinforcement structure is arranged at the connection position of the support beam, the tie beam and the lattice column, the chamfer reinforcement structure comprises a chamfer reinforcement, and the chamfer reinforcement is configured to form a triangular support area among the support beam, the tie beam and the lattice column.

[0006] In order to solve the problem that the lattice column hinders the full-length arrangement of the reinforcements in the beam, resulting in the lapping or cutting of the reinforcements and weakening the integrity, in an optional implementation manner, the reinforcements of the support beam and / or the tie beam adopt "several"-shaped reinforcements at the position of the lattice column, and the "several"-shaped reinforcements are configured to avoid the lattice column and realize the full-length laying of the reinforcements. The present application adopts the "several"-shaped reinforcements.

[0007] In order to provide wrapping and anchoring for the triangular reinforcement skeleton, form an integral body with the main structure to work together, and provide a sufficient concrete bearing area to effectively disperse the stress, in an optional implementation manner, the chamfer reinforcement structure comprises pouring concrete in the triangular support area to form a concrete chamfer, the section of the concrete chamfer is square, and the side length thereof ranges from 0.4m to 0.6m.

[0008] In order to provide a clear implementation method applicable to most medium-sized foundation pit projects, in one alternative implementation, the concrete chamfer has a size of 0.5m × 0.5m.

[0009] In one optional embodiment, the cross-sectional dimensions of the support beam are 0.8m × 0.6m, and / or the cross-sectional dimensions of the tie beam are 0.6m × 0.6m.

[0010] To further control micro-cracks on the concrete chamfered surface caused by temperature changes or shrinkage, and to improve the ultimate tensile strength and toughness of the concrete in this area, in an optional embodiment, the chamfered reinforcement structure further includes an additional steel mesh disposed within the support area of ​​the triangle.

[0011] Secondly, this application also provides a construction method for a retaining pile support system, including the following steps: At the planned connection points between the support beams and / or tie beams and the lattice columns, chamfered reinforcement is provided to form triangular reinforcement support areas; Concrete is poured to solidify the chamfered steel bars with the supporting beams, tie beams, and lattice columns, thereby forming the chamfered reinforced structure.

[0012] In one optional embodiment, the process of reinforcing the supporting beams and / or tie beams further includes: bending the reinforcing bars of the supporting beams and / or tie beams into a "U" shape at the location of the lattice column to avoid the lattice column and achieve continuous reinforcement. This method step is to ensure the continuity and integrity of the reinforcement within the beams.

[0013] In one optional embodiment, the step of configuring the chamfered steel bars includes: arranging the chamfered steel bars along the connection direction of the support beam and the tie beam, so that they form a triangular support area between the support beam, the tie beam and the lattice column, and pouring concrete within the triangular support area.

[0014] In one alternative implementation, during the concrete pouring step, the concrete pouring of the chamfered reinforcement structure is carried out simultaneously with the pouring of the support beam and tie beam.

[0015] The beneficial effects that the retaining pile support system and construction method disclosed in this application may bring include, but are not limited to: 1. Significantly improves structural strength and stability: The triangular chamfered reinforcement structure greatly improves the bending, shear and torsional resistance of the node area, effectively preventing the nodes from cracking and breaking under complex loads, and ensuring the overall stability and safety of the entire foundation pit support system.

[0016] 2. Fundamentally improve the mechanical performance of the joint: By converting stress concentration points into stress dispersion zones, the structural defect of traditional right-angle connections is fundamentally eliminated. This makes the joint no longer a weak link of the system, but instead a reinforced area, which greatly improves the reliability and durability of the support system.

[0017] 3. Ensure the integrity of reinforcing bars and improve bearing efficiency: The application of the "几"-shaped reinforcing bar ensures the continuity of the stressed reinforcing bar, avoiding the strength loss caused by cutting and lapping of reinforcing bars. Force can be smoothly transmitted along the continuous reinforcing bar, which greatly improves the material utilization rate and the ultimate bearing capacity of the component.

[0018] 4. Optimize the construction process and ensure pouring quality: The "几"-shaped reinforcing bar creates favorable conditions for concrete pouring, avoiding the problem of insufficient vibration compaction caused by excessively dense reinforcing bars. At the same time, the process of pouring the chamfered structure synchronously with the beam body eliminates construction cold joints caused by post-pouring, ensures the compactness and uniformity of the joint concrete, and thus guarantees the final construction quality.

[0019] 5. Enhance structural toughness and crack resistance: The additional reinforcing mesh arranged in the triangular area can effectively restrain concrete, inhibit and disperse the generation and development of microcracks, improve the toughness and deformation capacity of the joint area, and enable the structure to have better safety reserve under accidental overload conditions. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of a support system for a retaining pile according to the present utility model.

[0021] Figure 2 is a schematic diagram of the "几"-shaped reinforcing bar.

[0022] Description of reference numerals in the drawings: 1 - support beam, 2 - lattice column, 3 - tie beam, 4 - chamfered reinforcing bar, 5 - support area. Detailed Description of the Embodiments

[0023] Hereinafter, various exemplary embodiments, features and aspects of the present application will be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounting", "connecting" and "joining" shall be understood in a broad sense. For example, it may be a fixed connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0025] As Figure 1-2 as shown, in a first aspect, the present application provides a fender pile support system, which includes a lattice column 2, a support beam 1 and a tie beam 3. The support beam 1 and the tie beam 3 are arranged perpendicular to each other and supported by the lattice column 2. A chamfer reinforcement structure is provided at the joint between the support beam 1, the tie beam 3 and the lattice column 2. The chamfer reinforcement structure includes chamfered rebars 4, and the chamfered rebars 4 are configured to form a triangular support region 5 between the support beam 1, the tie beam 3 and the lattice column 2.

[0026] In the technical solution of the present application, the lattice column 2 is vertically arranged in the foundation pit and serves as a main vertical load-bearing member. The support beam 1 and the tie beam 3 are horizontally arranged and connected perpendicularly to each other at the top or side of the lattice column 2. The chamfer reinforcement structure is located in the joint core area where the three members meet. The chamfered rebars 4 are arranged at the joint, and their shape and position form a triangular framework region.

[0027] In the above technical solution, to achieve the technical effect of converting the original 90-degree right-angle connection between the support beam 1 and the tie beam 3, which is prone to stress concentration, into a triangular region with better mechanical performance, so as to disperse and transfer the joint stress and significantly improve the bending resistance, shear resistance and crack resistance of the joint, the present application is provided with the chamfer reinforcement structure containing the chamfered rebars 4 at the joint, thereby forming a triangular support region 5. This triangular structure has extremely high mechanical stability, can effectively distribute the load transmitted from the beam bodies to the lattice column 2, and fundamentally avoids brittle failure at the joint.

[0028] It should be noted that the chamfer reinforcement structure is not limited to a specific triangular angle, and its hypotenuse can be linear or slightly curved, as long as it can form a non-right-angle transition region. The arrangement mode of the chamfered rebars 4 can be a mesh shape, a radial shape or other forms that can form a stable triangular framework.

[0029] To solve the problem that the lattice column 2 hinders the full-length arrangement of the rebars in the beam, resulting in rebar lapping or truncation that weakens the integrity, in some embodiments, the rebars of the support beam 1 and / or the tie beam 3 adopt "Π"-shaped rebars at the position of the lattice column 2, and the "Π"-shaped rebars are configured to avoid the lattice column 2 and realize the full-length laying of the rebars. The present application adopts the "Π"-shaped rebars. This arrangement enables the main stressed rebars in the beam to continuously penetrate the entire beam body, avoids the weak point of rebar lapping at the key joint, ensures the effective transmission of force, and simultaneously reserves sufficient space for concrete pouring to ensure the pouring quality.

[0030] Specifically, the "几"-shaped steel bar is a part of the main reinforcement of the support beam 1 or the tie beam 3. When encountering the lattice column 2, instead of being cut off, it is bent and formed to bypass from the side of the lattice column 2 or the reserved space, and then returns to the original designed position, thereby ensuring the continuity of the steel bar.

[0031] Of course, the specific bending shape of the "几"-shaped steel bar is not limited to the strict "几" shape, and may be a smooth arc shape, a U-shape, or other bent shapes that can bypass obstacles and maintain continuity.

[0032] In order to provide wrapping and anchoring for the triangular reinforcement skeleton, form an integral body with the main structure to work together, and provide a sufficient concrete bearing area to effectively disperse stress, in some embodiments, the chamfer reinforcement structure includes pouring concrete in the triangular support area 5 to form a concrete chamfer, the cross section of the concrete chamfer is square, and the side length thereof ranges from 0.4m to 0.6m.

[0033] The concrete chamfer is integrally cast with the support beam 1, the tie beam 3 and the lattice column 2, fills the triangular space formed by the chamfer reinforcement 4, and forms a solid concrete triangular area. Setting the chamfer size in the range of 0.4m to 0.6m is to adapt to the engineering requirements of different load levels and beam body sizes, and provide design flexibility. The preferred size of 0.5m×0.5m is based on the conventional beam body sizes (such as 0.8m×0.6m and 0.6m×0.6m), and this size can achieve the best balance between ensuring structural performance and saving materials.

[0034] In order to provide a clear implementation mode applicable to most medium-sized foundation pit projects, in some embodiments, the size of the concrete chamfer is 0.5m×0.5m.

[0035] In some embodiments, the cross-sectional size of the support beam 1 is 0.8m×0.6m, and / or the cross-sectional size of the tie beam 3 is 0.6m×0.6m.

[0036] In order to further control the micro-cracks on the surface of the concrete chamfer caused by temperature change or shrinkage, and improve the ultimate tensile capacity and toughness of the concrete in this area, in some embodiments, the chamfer reinforcement structure further includes an additional reinforcement mesh disposed in the triangular support area 5. This layer of reinforcement mesh can effectively restrain the concrete, prevent crack propagation, and enable the chamfer reinforcement structure to maintain good working performance under ultimate load.

[0037] Specifically, the additional reinforcement mesh is disposed inside the concrete chamfer, usually located at the surface layer, and is bound or welded to the chamfer reinforcement 4 and the reinforcements of the beam and column.

[0038] Secondly, this application also provides a construction method for a retaining pile support system, including the following steps: At the planned connection points between the support beam 1 and / or tie beam 3 and the lattice column 2, chamfered steel bars 4 are provided to form a triangular steel bar support area 5; Concrete is poured to solidify the chamfered steel bar 4 with the supporting beam 1, tie beam 3 and lattice column 2, thereby forming the chamfered reinforced structure.

[0039] To ensure that the chamfered reinforcement structure forms a highly integrated rigid joint with the main structure (support beam 1, tie beam 3, and lattice column 2), this application adopts a construction method in which the chamfered steel bars 4 are configured together with the main reinforcement bars and poured together. This method avoids the problem of weak joint surfaces caused by post-cast strips and ensures the continuity of materials and the uniformity of mechanical properties in the joint area.

[0040] Specifically, the reinforcement of supporting beam 1, tie beam 3, and lattice column 2 is tied first, and chamfered reinforcement 4 is specially arranged at the joints to form a triangular skeleton. Then the formwork is erected, and finally the concrete is poured in one go.

[0041] In some embodiments, the process of reinforcing the support beam 1 and / or tie beam 3 further includes: bending the reinforcing bars of the support beam 1 and / or tie beam 3 into a "U" shape at the location of the lattice column 2 to avoid the lattice column 2 and achieve continuous reinforcement. This method step is to ensure the continuity and integrity of the reinforcement within the beam.

[0042] In some embodiments, the step of configuring the chamfered steel bar 4 includes: arranging the chamfered steel bar 4 along the connection direction of the support beam 1 and the tie beam 3, so that it forms a triangular support area 5 between the support beam 1, the tie beam 3 and the lattice column 2, and pouring concrete in the triangular support area 5.

[0043] In some embodiments, during the concrete pouring step, the concrete pouring of the chamfered reinforcement structure is carried out simultaneously with the pouring of the support beam 1 and the tie beam 3.

[0044] The core working principle of this invention lies in "morphological transformation" and "continuity assurance." By changing the geometric shape of the node area and the reinforcement configuration, it fundamentally solves the problem of weak nodes in traditional support systems. The force transmission path is optimized through "triangular nodes," and the force transmission efficiency is ensured through "continuous reinforcement." These two elements work together to create a robust and reliable node connection. Specifically: 1. Mechanical optimization of node morphology: from "right angle" to "triangular" Traditional problem: The supporting beam 1 and the tie beam 3 are connected at a 90-degree right angle at the lattice column 2. Under the action of load, the direction of force transmission changes drastically at this point, resulting in high stress concentration, which is similar to a fragile "hinge point".

[0045] This invention addresses the issue of creating a triangular support area 5 at the joint by setting chamfered steel bars 4 and pouring concrete. Triangles are considered extremely stable shapes in structural mechanics. This triangular concrete structure acts as a "structural transition zone," smoothly guiding the force flow from the support beam 1 and tie beam 3 to the lattice column 2, effectively dispersing concentrated stress over a larger area.

[0046] 2. Ensuring the continuity of reinforcement configuration: from "cutting off and bypassing" to "continuous connection" Traditional problem: The lattice column 2 obstructs the continuous arrangement of steel bars in the beam. Usually, the steel bars need to be cut off and then lapped or welded. This not only creates a weak point in the structure, but also makes it difficult to pour dense concrete in areas with dense steel bars.

[0047] This utility model solution employs "U"-shaped reinforcing bars, allowing the main load-bearing reinforcing bars of the beam to continuously and smoothly bypass the lattice column 2, achieving "continuous reinforcement." This ensures a continuous and uninterrupted force transmission path, maximizing the tensile strength of the reinforcing bars. Simultaneously, it provides a regular space for concrete pouring, ensuring concrete density and enabling better collaboration between the reinforcing bars and concrete.

[0048] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A retaining pile support system, comprising a lattice column (2), a support beam (1), and a tie beam (3), wherein the support beam (1) and the tie beam (3) are arranged perpendicularly to each other and rely on the lattice column (2), characterized in that, A chamfer reinforcement structure is provided at the connection positions of the support beam (1), the tie beam (3) and the lattice column (2), the chamfer reinforcement structure comprises chamfer steel bars (4), and the chamfer steel bars (4) are configured to form a triangular support region (5) among the support beam (1), the tie beam (3) and the lattice column (2).

2. The retaining pile support system as described in claim 1, characterized in that, The steel bars of the support beam (1) and / or the tie beam (3) adopt a zigzag-shaped steel bar at the position of the lattice column (2), and the zigzag-shaped steel bar is configured to bypass the lattice column (2) and realize full laying of the steel bars.

3. The retaining pile support system as described in claim 1 or 2, characterized in that, The chamfer reinforcement structure comprises pouring concrete in the triangular support region (5) to form a concrete chamfer, the cross section of the concrete chamfer is square, and the side length thereof ranges from 0.4m to 0.6m.

4. The retaining pile support system as described in claim 3, characterized in that, The cross-sectional dimension of the concrete chamfer is 0.5m×0.5m.

5. The retaining pile support system as described in claim 1 or 2, characterized in that, The cross-sectional dimension of the support beam (1) is 0.8m×0.6m, and / or the cross-sectional dimension of the tie beam (3) is 0.6m×0.6m.

6. The retaining pile support system as described in claim 1 or 2, characterized in that, The chamfer reinforcement structure further comprises an additional reinforcement mesh arranged in the triangular support region (5).

Images