Sheet pile supporting structure

Abstract

The utility model discloses a sheet pile supporting structure which comprises supporting sheet piles used for supporting the wall of a foundation pit, supporting enclosing purlins used for supporting a plurality of adjacent supporting sheet piles at the same time and positioning sheet piles fixed to the periphery of the foundation pit, and the positioning sheet piles pull the supporting enclosing purlins through tension lines. And each supporting enclosing purlin is pulled by a group of positioning sheet piles through a group of tensioning wires. According to the utility model, the tensioning line is connected to the outer side of the supporting sheet pile to realize traction of the supporting sheet pile, so that a supporting system is prevented from being arranged in a foundation pit.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pits, in particular to a sheet pile supporting structure. Background Art

[0002] A foundation pit is a pit or hole formed before excavation of the ground at a construction site. In construction, a foundation pit is an area excavated for the construction of underground structures (such as underground parking lots, underground shopping malls, basements, etc.). Foundation pit support refers to measures taken during the excavation of the foundation pit to prevent soil collapse, protect the safety of surrounding buildings and facilities, and ensure the safety of construction workers and the surrounding environment. The methods and means of foundation pit support depend on factors such as the depth of the foundation pit, surrounding environmental conditions, soil type, and construction requirements.

[0003] Sheet pile support is a temporary support structure commonly used in foundation pit projects to prevent soil collapse and protect the safety of surrounding buildings and facilities. The principle of sheet pile support is to use the continuous wall formed by steel sheet piles to resist the horizontal and vertical pressure of the soil and ensure the stability and safety of foundation pit construction.

[0004] Larsen steel sheet pile is a steel sheet pile system commonly used for foundation pit support. It has a certain concave-convex structure, which can realize the overlap and connection between pile bodies to form a continuous revetment or retaining wall. This steel sheet pile system is widely used in the field of civil engineering due to its structural design and ease of use.

[0005] The existing steel sheet pile plus internal support system is widely used in the current engineering construction field. If only a single layer of Larsen steel sheet piles is set, as the foundation pit is dug deeper and deeper, the steel sheet piles are at risk of overturning inward at any time; and if an internal support system for supporting the sheet piles is set in the foundation pit, the internal support system will occupy more space in the foundation pit, so it will hinder the construction of the foundation, main body, etc. in the foundation pit. Utility Model Content

[0006] In order to solve the problem that the support system of foundation pit supporting sheet piles occupies the foundation pit space, the utility model proposes a sheet pile supporting structure, which uses tensioning lines connected to the outside of the supporting sheet piles to achieve traction of the supporting sheet piles, thereby avoiding the need to set up a support system in the foundation pit.

[0007] The technical solution adopted by the utility model is to design a sheet pile support structure, including support sheet piles for supporting foundation pit walls, support purlins that simultaneously support several adjacent support sheet piles, and positioning sheet piles fixed to the periphery of the foundation pit, the positioning sheet piles pulling the support purlins through tensioning wires, each of the support purlins being pulled by a group of positioning sheet piles through a group of tensioning wires, several support sheet piles forming a group, each group of support sheet piles being pulled by a group of positioning sheet piles through a group of tensioning wires; the positioning sheet piles are connected by a scissor-type telescopic device, the scissor-type telescopic device comprising a scissor-type unit, the scissor-type unit comprising two connecting rods that are cross-rotatably connected together through a middle shaft hinge, the connecting rod ends of several of the scissor-type units are connected through end shaft hinges, and each of the positioning sheet piles is respectively connected to one of the middle shaft hinges

[0008] In certain embodiments, the positioning sheet piles are perpendicular to the connecting rods.

[0009] In certain embodiments, each of the end shaft hinges is connected to a positioning sheet pile.

[0010] In some embodiments, the two connecting rods of the scissor-type unit are connected via a spacing adjustment mechanism.

[0011] In certain embodiments, two adjacent middle axis hinges are connected via a spacing adjustment mechanism.

[0012] In certain embodiments, two adjacent end axis hinges are connected via a spacing adjustment mechanism.

[0013] In certain embodiments, the positioning sheet piles are provided with transverse through holes, and the transverse through holes of each group of the positioning sheet piles are simultaneously sleeved on a guide rod.

[0014] In some embodiments, the tension wire passes through the supporting sheet piles and is connected to the supporting purlin.

[0015] In certain embodiments, each set of spacer sheet piles includes six of the spacer sheet piles.

[0016] In certain embodiments, a guide member is provided between each supporting purlin and each group of the positioning sheet piles, and the guide member is provided with a guide hole for each group of the tensioning wires to pass through, and each group of the tensioning wires passes through the guide hole to cross-connect the supporting sheet piles and the positioning sheet piles.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model utilizes tensioning wires connected to the outer sides of the supporting sheet piles to achieve traction of the supporting sheet piles, thereby avoiding the support system set up in the foundation pit to hinder the construction in the foundation pit. The positioning sheet piles are equivalent to anchors, thereby achieving anchoring, pulling and positioning of the supporting sheet piles, thereby preventing the supporting sheet piles from tilting toward the inside of the foundation pit.

[0019] The spacing between adjacent positioning sheet piles changes synchronously through the scissor-type telescopic device. When the scissor-type telescopic device is extended, the spacing between adjacent positioning sheet piles becomes larger, which is beneficial to provide a larger anchoring force for the tensioning wire; when the scissor-type telescopic device is shortened, the spacing between adjacent positioning sheet piles becomes smaller, which is convenient for fixing and reducing the occupation of the construction area, and is convenient for workers to construct. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is described in detail below in conjunction with specific embodiments and drawings. In order to show details and facilitate understanding of its principles, it is not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:

[0021] Figure 1 It is a cross-sectional schematic diagram of the support system set up on the side of the foundation pit.

[0022] Figure 2 It is a top view schematic diagram of the support system.

[0023] In the figure, 1. supporting sheet piles; 2. supporting purlins; 3. supporting legs; 4. positioning sheet piles; 5. tensioning wires; 6. connecting rods; 7. end axis hinges; 8. middle axis hinges; 9. spacing adjustment mechanism; 10. guide blocks; 11. guide rods; 12. guide members; 121. guide holes. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required for the solution of the utility model.

[0025] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0026] Embodiment 1

[0027] like Figure 1 , 2As shown, a sheet pile support structure includes supporting sheet piles 1 for supporting the side walls of a foundation pit, and supporting purlins 2 that simultaneously support several adjacent supporting sheet piles 1, wherein the supporting sheet piles 1 are Larsen steel sheet piles, and the supporting purlins 2 are crossbeams that transversely support the supporting sheet piles 1, and the lower ends of the supporting sheet piles 1 are inserted into the soil layer below the side walls of the foundation pit, and the upper parts of the supporting sheet piles 1 are provided with supporting legs 3 that upwardly support the supporting purlins 2, commonly known as "corbels", and the supporting purlins 2 prevent the supporting sheet piles 1 from tilting into the foundation pit.

[0028] The support system also includes positioning sheet piles 4 fixed to the periphery of the foundation pit, the lower end of the positioning sheet piles 4 is inserted into the soil layer, and only a small part of the upper end is exposed outside. The positioning sheet piles 4 pull the supporting purlins 2 through tensioning wires 5. The tensioning wires 5 replace the traditional sheet pile internal support system, thereby giving the supporting purlins 2 a traction force toward the outside of the foundation pit to prevent the supporting sheet piles 1 from tilting toward the inside of the foundation pit. Each supporting purlin 2 is pulled by a group of positioning sheet piles 4 through a group of tensioning wires 5. Several supporting sheet piles form a group. Each group of supporting sheet piles is pulled by a group of positioning sheet piles through a group of tensioning wires. In this embodiment, the number of each group of positioning sheet piles 4 is six. The tensioning wires 5 are, for example, steel strands.

[0029] The positioning sheet piles are connected by a scissor-type telescopic device, which includes a scissor-type unit, and the scissor-type unit includes two connecting rods 6 connected together by a cross-rotation of a middle shaft hinge. The ends of the connecting rods of several scissor-type units are connected by an end shaft hinge 7, and each positioning sheet pile is connected to a middle shaft hinge 8. The angle of the connecting rod of the scissor-type unit can be adjusted to make the entire scissor-type telescopic device telescopic and retractable. During the telescopic process of the scissor-type telescopic device, the spacing between the two adjacent middle shaft hinges is synchronized, so that the spacing between the adjacent positioning sheet piles changes synchronously. When the scissor-type telescopic device is extended, the spacing between the adjacent positioning sheet piles becomes larger. At this time, the positioning sheet piles of this group occupy a larger ground area, which is conducive to providing a larger anchoring force for the tensioning wire; when the scissor-type telescopic device is shortened, the spacing between the adjacent positioning sheet piles becomes smaller. At this time, the positioning sheet piles of this group occupy a smaller ground area, which is convenient for fixing and reducing the occupation of the construction area. It can also make a gap between two adjacent groups of tensioning wires, which can be used for workers to walk during construction, which is convenient for workers to construct.

[0030] The positioning sheet piles are perpendicular to the connecting rods, that is, the connecting rods are in a horizontal state.

[0031] Each of the end shaft hinges is also connected to a positioning sheet pile, thereby improving the anchoring force.

[0032] The two connecting rods of the scissor-type fork unit are connected by a spacing adjustment mechanism 9, which is a telescopic cylinder such as a pneumatic cylinder or an electric cylinder, so as to adjust the angle of the connecting rod and adjust the telescopic movement of the scissor-type fork telescopic device.

[0033] Of course, it is also possible that two adjacent middle axis hinges are connected by a spacing adjustment mechanism, or two adjacent end axis hinges are connected by a spacing adjustment mechanism, which also has the same function of adjusting the telescopic function of the scissors-type telescopic device.

[0034] The positioning sheet piles are provided with guide blocks 10, and the guide blocks are provided with transverse through holes. The transverse through holes of each group of the positioning sheet piles are simultaneously sleeved on a guide rod 11, so that the positioning sheet pile surfaces are located on the same plane.

[0035] The tensioning wire passes through the supporting sheet piles and is connected to the supporting purlin.

[0036] A guide member 12 is provided between each supporting purlin and each group of positioning sheet piles, and a guide hole 121 is provided on the guide member for each group of tensioning wires to pass through. Each group of tensioning wires passes through the guide hole to cross and connect the supporting sheet piles and the positioning sheet piles. The guide member allows each group of tensioning wires to converge at the guide hole, thereby preventing the tensioning wires from covering too much ground space and affecting construction.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them in similar ways, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A sheet pile support structure, comprising support sheet piles for supporting foundation pit walls and supporting purlins for supporting a plurality of adjacent support sheet piles, characterized in that: It also includes positioning sheet piles fixed on the periphery of the foundation pit, the positioning sheet piles pull the supporting purlins through tensioning wires, each of the supporting purlins is pulled by a group of positioning sheet piles through a group of tensioning wires, several supporting sheet piles form a group, each group of supporting sheet piles is pulled by a group of positioning sheet piles through a group of tensioning wires; the positioning sheet piles are connected by a scissor-type telescopic device, the scissor-type telescopic device includes a scissor-type unit, the scissor-type unit includes two connecting rods connected together by cross-rotation through a middle axis hinge, the connecting rod ends of several of the scissor-type units are connected by end axis hinges, and each of the positioning sheet piles is respectively connected to one of the middle axis hinges.

2. The sheet pile support structure according to claim 1, characterized in that: The positioning sheet piles are perpendicular to the connecting rods.

3. The sheet pile supporting structure according to claim 1, characterized in that: Each of the end shaft hinges is respectively connected to a positioning sheet pile.

4. The sheet pile supporting structure according to claim 1, characterized in that: The two connecting rods of the scissor-type unit are connected via a spacing adjustment mechanism.

5. The sheet pile supporting structure according to claim 1, characterized in that: Two adjacent middle axis hinges are connected via a spacing adjustment mechanism.

6. The sheet pile supporting structure according to claim 1, characterized in that: Two adjacent end shaft hinges are connected via a spacing adjustment mechanism.

7. The sheet pile supporting structure according to claim 1, characterized in that: The positioning sheet piles are provided with transverse through holes, and the transverse through holes of each group of the positioning sheet piles are simultaneously sleeved on a guide rod.

8. The sheet pile supporting structure according to claim 1, characterized in that: The tensioning wire passes through the supporting sheet piles and is connected to the supporting purlin.

9. The sheet pile supporting structure according to claim 1, characterized in that: Each group of positioning sheet piles includes six positioning sheet piles.

10. The sheet pile supporting structure according to claim 1, characterized in that: A guide member is provided between each supporting purlin and each group of the positioning sheet piles, and a guide hole is provided on the guide member for each group of the tensioning wires to pass through. Each group of the tensioning wires passes through the guide hole to cross-connect the supporting sheet piles and the positioning sheet piles.

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