Supporting structure of shallow foundation pit in deep soft soil layer

Abstract

The utility model discloses a deep soft soil layer shallow foundation pit supporting structure which comprises a connecting shaft, a conveniently-disassembled fixing structure and a supporting structure body, the conveniently-disassembled fixing structure is arranged on the connecting shaft, and the supporting structure body is arranged on the conveniently-disassembled fixing structure. The fixing structure convenient to disassemble comprises a first rotary connecting base, a first connecting pipe, a first fixing ring, a first anchor rod, a first impact head, a second rotary connecting base, a second connecting pipe, a second fixing ring, a second anchor rod and a second impact head, the first rotary connecting base is rotationally arranged on the connecting shaft, and the first connecting pipe is arranged at one end of the first rotary connecting base in a threaded mode. The utility model belongs to the technical field of supporting equipment, particularly relates to a supporting structure of a deep soft soil layer shallow foundation pit, and effectively solves the problems that most supporting structures of the soft soil layer shallow foundation pit mostly use cemented soil retaining walls, pile and inner supports or pile anchor supporting systems, the cost is high, meanwhile, a scaffold is used for building a supporting frame and fixing a supporting template, and the supporting cost is high. And later disassembly is troublesome, and recovery cannot be carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting equipment, in particular to a supporting structure for a shallow foundation pit in a thick soft soil layer. Background Art

[0002] The demand for underground space development in my country is developing rapidly, and the construction volume of deep foundation pit projects is increasing. Slope support is widely used in deep foundation pit projects because it has the characteristics of simple construction conditions, good economic benefits, and does not affect the construction of the main structure in the foundation pit. In deep soft soil areas, when the surrounding environment deformation control requirements are high or the slope rate is too steep due to site restrictions, even for shallow foundation pits with relatively shallow excavation depths (generally not more than 6m), slope support is generally difficult to meet the requirements of foundation pit deformation control and stability, and support forms such as pile support and pile anchor are often used.

[0003] However, the existing support structures for shallow foundation pits in soft soil layers mostly use cement soil retaining walls, piles with internal supports or pile-anchor support systems, which are relatively expensive. At the same time, scaffolding is used to build support frames and fix support formwork, which is troublesome to disassemble later and cannot be recycled. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model proposes a support structure for shallow foundation pits in deep soft soil layers, which effectively solves the problem that most support structures for shallow foundation pits in soft soil layers use cement soil retaining walls, piles with internal supports or pile-anchor support systems, which are relatively costly. At the same time, scaffolding is used to build support frames and fix support formworks, which are troublesome to disassemble at a later stage and cannot be recycled.

[0005] The technical solution adopted by the utility model is as follows: the utility model proposes a supporting structure for a shallow foundation pit in a deep soft soil layer, comprising a connecting shaft, a dismantling fixing structure and a supporting structure, wherein the dismantling fixing structure is arranged on the connecting shaft, and the supporting structure is arranged on the dismantling fixing structure, wherein the dismantling fixing structure comprises a rotating connecting seat 1, a connecting pipe 1, a fixing ring 1, an anchor rod 1, an impact head 1, a rotating connecting seat 2, a connecting pipe 2, a fixing ring 2, an anchor rod 2 and an impact head 2, wherein the rotating connecting seat 1 is rotatably arranged on the connecting shaft, the connecting pipe 1 is threadedly arranged at one end of the rotating connecting seat 1, the fixing ring 1 is rotatably arranged at one end of the connecting pipe 1, the anchor rod 1 penetrates the fixing ring 1 and is slidably arranged, the impact head 1 is threadedly fixed at the bottom end of the anchor rod 1, the rotating connecting seat 2 is rotatably arranged at the other end of the connecting shaft, the connecting pipe 2 is threadedly arranged at one end of the rotating connecting seat 2, the fixing ring 2 is rotatably arranged at one end of the connecting pipe 2, the anchor rod 2 penetrates the fixing ring 2 and is slidably arranged, and the impact head 2 is threadedly arranged at the bottom of the anchor rod 2.

[0006] Preferably, the support structure includes a fixing bolt and a support plate. The fixing bolt is semi-wrapped around the outer side of the second anchor rod in a ring shape, and the support plate is penetrated through the fixing bolt.

[0007] To better achieve the effect of convenient disassembly, neither the first anchor rod nor the second anchor rod is fixed with bolts.

[0008] To achieve the purpose of tensioning faster, the first rotating connection seat is between the connecting shaft and the first connecting pipe, and the first connecting pipe rotates on the first fixing ring. The second rotating connection seat is between the connecting shaft and the second connecting pipe, and the second connecting pipe rotates on the second fixing ring.

[0009] Furthermore, the front end of the fixing bolt is semi-circular in shape, but the rear end is provided as a threaded rod.

[0010] To achieve the effect of material saving, the support plate is made of wood.

[0011] With the above structure, the beneficial effects obtained by the present utility model are as follows: For the support structure of a shallow foundation pit in a deep soft soil layer proposed in this solution, after the second anchor rod and the first anchor rod are used, they can be pulled out from the ground for reuse, reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. 1 is an overall structural schematic diagram of a support structure for a shallow foundation pit in a deep soft soil layer proposed by the present utility model;

[0013] Figure 2 FIG. 2 is a schematic diagram of the structure of another perspective of a support structure for a shallow foundation pit in a deep soft soil layer proposed by the present utility model;

[0014] Figure 3 FIG. 3 is a schematic sectional structure diagram of a support structure for a shallow foundation pit in a deep soft soil layer proposed by the present utility model.

[0015] Wherein, 1. Connecting shaft, 2. Convenient disassembly fixing structure, 3. Support structure, 4. First rotating connection seat, 5. First connecting pipe, 6. First fixing ring, 7. First anchor rod, 8. First impact head, 9. Second rotating connection seat, 10. Second connecting pipe, 11. Second fixing ring, 12. Second anchor rod, 13. Second impact head, 14. Fixing bolt, 15. Support plate.

[0016] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] As Figure 1 , Figure 2 and Figure 3 shown, a support structure for a shallow foundation pit in a deep soft soil layer proposed by the present utility model includes a connecting shaft 1, a detachable fixing structure 2, and a support structure 3. The detachable fixing structure 2 is arranged on the connecting shaft 1, and the support structure 3 is arranged on the detachable fixing structure 2. The detachable fixing structure 2 includes a first rotating connection seat 4, a first connecting pipe 5, a first fixing ring 6, a first anchor rod 7, a first impact head 8, a second rotating connection seat 9, a second connecting pipe 10, a second fixing ring 11, a second anchor rod 12, and a second impact head 13. The first rotating connection seat 4 is rotatably arranged on the connecting shaft 1. The first connecting pipe 5 is threadedly arranged at one end of the first rotating connection seat 4. The first fixing ring 6 is rotatably arranged at one end of the first connecting pipe 5. The first rotating connection seat 4 connects the connecting shaft 1 and the first connecting pipe 5, and the first connecting pipe 5 rotates on the first fixing ring 6. The first anchor rod 7 is slidably arranged through the first fixing ring 6. The first impact head 8 is threadedly fixed at the bottom end of the first anchor rod 7. The second rotating connection seat 9 is rotatably arranged at the other end of the connecting shaft 1. The second connecting pipe 10 is threadedly arranged at one end of the second rotating connection seat 9. The second fixing ring 11 is rotatably arranged at one end of the second connecting pipe 10. The second rotating connection seat 9 is arranged between the connecting shaft 1 and the second connecting pipe 10, and the second connecting pipe 10 rotates on the second fixing ring 11. The second anchor rod 12 is slidably arranged through the second fixing ring 11. Neither the first anchor rod 7 nor the second anchor rod 12 is fixed with bolts. The second impact head 13 is threaded at the bottom of the second anchor rod 12.

[0019] As Figure 1 and Figure 2 shown, the support structure 3 includes a fixing bolt 14 and a support plate 15. The fixing bolt 14 is looped and semi-wrapped around the outside of the second anchor rod 12. The front end of the fixing bolt 14 is semicircular, but the rear end is in the form of a threaded rod. The support plate 15 is arranged through the fixing bolt 14. The support plate 15 is made of wood.

[0020] During specific use, when the user uses this device, first dig a foundation pit, then insert the second anchor rod 12 into the edge of the foundation pit, then insert the support plate 15 into the position between the edge wall of the foundation pit and the second anchor rod 12, then insert the fixing bolt 14 through one end of the support plate 15 into the soil for fixation, and the other end with a bent head is looped on the second anchor rod 12, so as to fix the fixing bolt 14. At the same time, the first row of anchor rods 7 is parallel to the second anchor rod 12 and inserted into the ground, then insert the first fixing ring 6 and the second fixing ring 11 connected to the second rotating connection seat 9 onto the first anchor rod 7 and the second anchor rod 12 respectively. At this time, by turning the first rotating connection seat 4 and the second rotating connection seat 9 on the connecting shaft 1, the first connecting pipe 5 and the second connecting pipe 10 are pulled, so as to pull and fix the first anchor rod 7 and the second anchor rod 12, so that the support plate 15 can stably support. When it is no longer in use, at this time, remove the first fixing ring 6 from the first anchor rod 7, and at the same time remove the second fixing ring 11 from the second anchor rod 12, then use the hoisting device to pull out the first anchor rod 7 and the second anchor rod 12 from the ground for reuse. The above is the entire use process of the support structure 3 for the shallow foundation pit in the deep soft soil layer.

[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0023] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present invention, design structurally similar ways and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A retaining structure for a shallow foundation pit in a deep soft soil layer, characterized in that: It includes a connecting shaft, a detachable fixing structure and a support structure. The detachable fixing structure is arranged on the connecting shaft, and the support structure is arranged on the detachable fixing structure. The detachable fixing structure includes a first rotating connecting seat, a first connecting pipe, a first fixing ring, a first anchor rod, a first impact head, a second rotating connecting seat, a second connecting pipe, a second fixing ring, a second anchor rod and a second impact head. The first rotating connecting seat is rotatably arranged on the connecting shaft. The first connecting pipe is threaded at one end of the first rotating connecting seat. The first fixing ring is rotatably arranged at one end of the first connecting pipe. The first anchor rod is slidably arranged through the first fixing ring. The first impact head is fixedly threaded at the bottom end of the first anchor rod. The second rotating connecting seat is rotatably arranged at the other end of the connecting shaft. The second connecting pipe is threaded at one end of the second rotating connecting seat. The second fixing ring is rotatably arranged at one end of the second connecting pipe. The second anchor rod is slidably arranged through the second fixing ring. The second impact head is threaded at the bottom of the second anchor rod.

2. The retaining structure for a shallow foundation pit in a deep soft soil layer according to claim 1, wherein: The support structure includes a fixing bolt and a support plate. The fixing bolt is semi-wrapped around the outside of the second anchor rod in a ring-shaped manner, and the support plate is arranged through the fixing bolt.

3. The retaining structure for a shallow foundation pit in a deep soft soil layer according to claim 2, characterized in that: Neither the first anchor rod nor the second anchor rod is fixed with bolts.

4. The retaining structure for a shallow foundation pit in a deep soft soil layer according to claim 3, characterized in that: The first rotating connecting seat is between the connecting shaft and the first connecting pipe, and the first connecting pipe rotates on the first fixing ring. The second rotating connecting seat is between the connecting shaft and the second connecting pipe, and the second connecting pipe rotates on the second fixing ring.

5. The retaining structure for a shallow foundation pit in a deep soft soil layer according to claim 4, characterized in that: The front end of the fixing bolt is semicircularly ring-shaped, but the rear end is in the shape of a threaded rod.

6. The supporting structure for a shallow foundation pit in a deep soft soil layer according to claim 5, characterized in that: The support plate is made of wood.

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