Foundation pit support structure convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of foundation pit support, in particular to a foundation pit support structure convenient to disassemble and assemble, which comprises a plurality of steel sheet piles sequentially arranged on the inner side of a foundation pit in the circumferential direction of the foundation pit, and further comprises four enclosing purlins sequentially arranged on the inner sides of the steel sheet piles in the circumferential direction of the foundation pit. The eight supporting plates are located on the lower sides of the two ends of the surrounding purlins correspondingly and fixedly welded to the inner sides of the corresponding steel sheet piles; and the four reinforcing rib plates are located between every two adjacent surrounding purlins respectively, and each reinforcing rib plate is detachably connected with the two adjacent surrounding purlins and the two adjacent supporting plates. The supporting plates and the reinforcing rib plates are arranged, each reinforcing rib plate is detachably connected with the two adjacent enclosing purlins, and each reinforcing rib plate is detachably connected with the two adjacent supporting plates, so that the foundation pit support structure is convenient to disassemble and assemble, meanwhile, the structural integrity of the steel sheet piles does not need to be damaged, the bearing capacity of the steel sheet piles is guaranteed, and the using effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit support technology field, concretely is a foundation pit support structure convenient to dismount. BACKGROUND

[0002] The main purpose of the foundation pit support is to guarantee construction safety and avoid ground subsidence, and also reduce the influence on the surrounding environment. Specifically, the foundation pit support system can guarantee the stability of the foundation pit and the safety and convenience of the operation in the pit, and control the displacement of the pit bottom and the soil outside the pit within a certain range to ensure the normal use of adjacent buildings and municipal facilities. Common foundation pit support methods include gravity type mixing pile retaining wall, underground continuous wall, pile type retaining wall and steel sheet pile.

[0003] The current foundation pit support structure, such as the patent with the authorized announcement number CN217378905U, discloses a foundation pit support structure convenient to dismount, which comprises: a foundation pit provided with a bottom surface and a plurality of side edges, a number of corner piles equal to the number of side edges, and a support surface placed one-to-one on the inner side of the side edge; the support surface comprises a plurality of steel sheet piles connected in sequence and detachable; a steel surround purlin is placed on the inner side of the steel sheet pile and detachably connected with the steel sheet pile; the lower end of the steel sheet pile is inserted into the bottom surface, and the lower end of the corner pile is inserted into the bottom surface; the corner pile and the steel sheet pile at one end of the adjacent two support surfaces are detachably connected. The foundation pit support structure convenient to dismount has a short construction period, is convenient to dismount and can be reused.

[0004] In the above related technology, the steel surround purlin and the steel sheet pile are fixed by bolts, which is convenient to dismount, but the holes corresponding to the bolts need to be opened on the steel sheet pile, which will damage the structural integrity of the steel sheet pile and affect the bearing capacity of the steel sheet pile. Therefore, we propose a foundation pit support structure convenient to dismount to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a foundation pit support structure convenient to dismount to solve the problems in the above background technology.

[0006] The utility model is implemented by the following technical solutions: a foundation pit support structure convenient to dismount, which comprises a plurality of steel sheet piles arranged in sequence on the inner side of the foundation pit along the circumference of the foundation pit, and further comprises:

[0007] Four surround purlins, which are arranged in sequence on the inner side of the steel sheet pile along the circumference of the foundation pit;

[0008] Eight support plates, which are respectively located on the lower side of both ends of each surround purlin and are welded and fixed to the inner side of the corresponding steel sheet pile;

[0009] Four reinforcing ribs, four reinforcing ribs are located between adjacent two surrounding purlins respectively, each reinforcing rib is detachably connected between the adjacent two surrounding purlins and the adjacent two support plates.

[0010] Optionally, the surrounding purlin abuts against the inner side of the corresponding steel sheet pile, the support plate abuts against the bottom of the corresponding surrounding purlin, and the reinforcing rib abuts against the inner sides of the adjacent two surrounding purlins.

[0011] Optionally, the reinforcing rib is a right triangle, and a weight-reducing hole is formed in the middle of the reinforcing rib.

[0012] Optionally, the reinforcing rib is fixed with a pressing plate corresponding to the adjacent two surrounding purlins, a plurality of fixed bolts are fixed in parallel and at intervals at the bottom of each pressing plate, each fixed bolt is movably penetrated through the corresponding surrounding purlin and support plate in the vertical direction, and a fixed nut abutting against the bottom of the corresponding surrounding purlin is threadedly connected to the lower end of each fixed bolt.

[0013] The reinforcing rib is detachably connected to the adjacent two surrounding purlins and the adjacent two support plates through the cooperation of the pressing plate, the fixed bolt and the fixed nut.

[0014] Optionally, a groove corresponding to the pressing plate is formed in the top of the surrounding purlin, and the pressing plate is movably placed in the groove; the upper surfaces of the surrounding purlin, the reinforcing rib and the pressing plate are flush.

[0015] Optionally, a positioning column corresponding to each fixed bolt is fixed to the top of the support plate, a give-way hole for the fixed bolt to pass through is formed in the middle of each positioning column, and each give-way hole is in the shape of a horn with the upper end larger than the lower end.

[0016] A positioning hole corresponding to each positioning column is formed in the surrounding purlin, and each positioning column is movably penetrated through the corresponding positioning hole in the vertical direction.

[0017] Compared with the prior art, the utility model provides a foundation pit support structure convenient to disassemble, has the following beneficial effects:

[0018] The utility model discloses a support plate and reinforcing rib are set up, and each reinforcing rib is detachably connected between the adjacent two surrounding purlins and the adjacent two support plates, which facilitates the disassembly of the foundation pit support structure, does not need to destroy the structural integrity of the steel sheet pile, guarantees the bearing capacity of the steel sheet pile, and has better use effect. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the top view of the utility model;

[0020] Figure 2 It is the bottom view of the utility model;

[0021] Figure 3It is the structure schematic view of the surrounding purlin of the utility model.

[0022] Figure 4 It is the structure schematic view of the support plate of the utility model.

[0023] Figure 5 It is the structure schematic view of the reinforcing rib plate of the utility model.

[0024] In the drawing: 1, steel sheet pile; 2, surrounding purlin; 3, support plate; 4, reinforcing rib plate; 5, weight-reducing hole; 6, pressing plate; 7, fixed bolt; 8, fixed nut; 9, recess; 10, positioning column; 11, positioning hole; 12, give way hole. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Embodiment: please refer to Figures 1 to 5 A foundation pit support structure convenient to disassemble, which comprises a plurality of steel sheet piles 1 arranged in sequence on the inner side of the foundation pit along the circumference of the foundation pit, the steel sheet piles 1 can be quickly driven into the soil by vibration piling method, impact piling method, static pressure piling method and the like to form a support structure.

[0027] The embodiment also comprises four surrounding purlins 2, eight support plates 3 and four reinforcing rib plates 4; each steel sheet pile 1, each surrounding purlin 2, each support plate 3 and each reinforcing rib plate 4 cooperate with each other to form the foundation pit support structure, thereby ensuring the stability of the foundation pit and the safety of the work in the pit.

[0028] In the embodiment, the four surrounding purlins 2 are arranged in sequence on the inner side of the steel sheet piles 1 along the circumference of the foundation pit, thereby increasing the overall stability. The eight support plates 3 are respectively located on the lower side of both ends of each surrounding purlin 2 and are welded and fixed to the inner side of the corresponding steel sheet pile 1, and are used for supporting the surrounding purlin 2. The four reinforcing rib plates 4 are respectively located between the two adjacent surrounding purlins 2, and are used for improving the stability between the two adjacent surrounding purlins 2. Each reinforcing rib plate 4 is detachably connected with the two adjacent surrounding purlins 2 and the two adjacent support plates 3, thereby facilitating the disassembly and assembly of the foundation pit support structure.

[0029] It should be noted that the surrounding purlin 2 abuts against the inner side of the corresponding steel sheet pile 1, so that the steel sheet pile 1 is not easy to deform. The support plate 3 abuts against the bottom of the corresponding surrounding purlin 2, so that the surrounding purlin 2 can be supported. The reinforcing rib plate 4 abuts against the inner side of the two adjacent surrounding purlins 2, thereby strengthening the stability between the two adjacent surrounding purlins 2.

[0030] Preferably, the reinforcing rib plate 4 is a right triangle, which can stably support the two adjacent surrounding purlins 2. The reinforcing rib plate 4 is provided with a weight-reducing hole 5 in the middle, which is used to reduce the weight of the reinforcing rib plate 4 and facilitate the installation of the reinforcing rib plate 4 between the two adjacent surrounding purlins 2.

[0031] Specifically, the reinforcing rib plate 4 is fixed with a pressing plate 6 corresponding to each of the two adjacent surrounding purlins 2. A plurality of fixed bolts 7 are fixed in parallel and at intervals at the bottom of each pressing plate 6. Each fixed bolt 7 is movably arranged through the corresponding surrounding purlin 2 and the support plate 3 in the vertical direction. A fixed nut 8 is threadedly connected to the lower end of each fixed bolt 7 and abuts against the bottom of the corresponding surrounding purlin 2. The reinforcing rib plate 4 is detachably connected with the two adjacent surrounding purlins 2 and the two adjacent support plates 3 through the cooperation of the pressing plate 6, the fixed bolt 7 and the fixed nut 8. When it is necessary to disassemble the foundation pit support structure, the fixed nut 8 is unscrewed, and then the fixed bolt 7 is pulled out, so that the reinforcing rib plate 4 can be removed. Then the surrounding purlin 2 is removed from the support plate 3, and finally the steel sheet pile 1 is pulled out from the soil, so that the disassembly of the foundation pit support structure is completed. The structure is simple and convenient to disassemble and assemble.

[0032] It is worth mentioning that the top of the surrounding purlin 2 is provided with a groove 9 adapted to the pressing plate 6. The pressing plate 6 is movably arranged in the groove 9, so that the upper surfaces of the surrounding purlin 2, the reinforcing rib plate 4 and the pressing plate 6 are flush, and the overall foundation pit support structure is relatively flat and beautiful, which does not easily affect the work of the workers.

[0033] It should be noted that the top of the support plate 3 is fixed with a positioning column 10 corresponding to each fixed bolt 7. A clearance hole 12 is formed in the middle of each positioning column 10 for the fixed bolt 7 to pass through. The upper end of each clearance hole 12 is in the shape of a large upper end and a small lower end, so that the fixed bolt 7 can pass through the clearance hole 12. A positioning hole 11 corresponding to each positioning column 10 is formed in the surrounding purlin 2. Each positioning column 10 movably passes through the corresponding positioning hole 11 in the vertical direction. Through the cooperation of the positioning column 10 and the positioning hole 11, when the surrounding purlin 2 is placed on the support plate 3, the positioning column 10 needs to pass through the positioning hole 11, so that the surrounding purlin 2 can be positioned, and the surrounding purlin 2 and the support plate 3 are not easily moved laterally relative to each other. At the same time, when the reinforcing rib plate 4 is placed, the fixed bolt 7 can smoothly pass through the surrounding purlin 2 and the support plate 3.

[0034] The working principle is as follows:

[0035] First, each steel sheet pile 1 is driven into the soil on the inner side of the foundation pit to form a supporting structure; then, a support plate 3 is welded on the inner side of the steel sheet pile 1; then, a surrounding purlin 2 is placed on the support plate 3, and the positioning column 10 passes through the positioning hole 11; then, a reinforcing rib plate 4 is placed at the included angle between two adjacent surrounding purlins 2, and the fixing bolt 7 passes through the corresponding gap hole 12; finally, the fixing nut 8 is screwed on the lower end of the fixing bolt 7, and the assembly of the foundation pit enclosure structure is completed. With this kind of foundation pit enclosure structure, the structural integrity of the steel sheet pile 1 does not need to be destroyed, so that it is not easy to deform or be damaged when subjected to stress.

[0036] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus.

[0037] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A foundation pit enclosure convenient to disassemble, comprising a plurality of steel sheet piles (1) arranged in sequence along the circumference of the foundation pit on the inner side of the foundation pit, characterized in that, Also include: Four surrounding purlins (2), four surrounding purlins (2) are sequentially arranged along the circumferential direction of the foundation pit on the inner side of the steel sheet pile (1); Eight support plates (3), eight support plates (3) are respectively located at both ends of each surrounding purlin (2) on the lower side and are welded and fixed to the inner side of the corresponding steel sheet pile (1); Four reinforcing rib plates (4), four reinforcing rib plates (4) are respectively located between two adjacent surrounding purlins (2), and each reinforcing rib plate (4) is detachably connected with the two adjacent surrounding purlins (2) and the two adjacent support plates (3).

2. The foundation pit enclosure convenient to disassemble according to claim 1, characterized in that: The surrounding purlin (2) abuts against the inner side of the corresponding steel sheet pile (1), the support plate (3) abuts against the bottom of the corresponding surrounding purlin (2), and the reinforcing rib plate (4) abuts against the inner sides of the two adjacent surrounding purlins (2).

3. The foundation pit enclosure of claim 1, wherein: The reinforcing rib plate (4) is a right triangle, and a weight reduction hole (5) is formed in the middle of the reinforcing rib plate (4).

4. The foundation pit enclosure of claim 1, wherein: The reinforcing rib plate (4) is fixed with a pressing plate (6) corresponding to the two adjacent surrounding purlins (2), a plurality of fixed bolts (7) are fixed in parallel and at intervals at the bottom of each pressing plate (6), each fixed bolt (7) passes through the corresponding surrounding purlin (2) and support plate (3) in the vertical direction, and a fixed nut (8) abutting against the bottom of the corresponding surrounding purlin (2) is threadedly connected to the lower end of each fixed bolt (7). The reinforcing rib plate (4) and the two adjacent surrounding purlins (2) and the two adjacent support plates (3) are detachably connected through the cooperation of the pressing plate (6), the fixed bolt (7) and the fixed nut (8).

5. The demountable excavation enclosure of claim 4, wherein: The top of the surrounding purlin (2) is provided with a groove (9) adapted to the pressing plate (6), and the pressing plate (6) is movably placed in the groove (9); the upper surfaces of the surrounding purlin (2), the reinforcing rib plate (4) and the pressing plate (6) are flush.

6. The excavated foundation enclosure according to claim 4, wherein: The top of the support plate (3) is fixed with a positioning column (10) corresponding to each fixed bolt (7), a clearance hole (12) is formed in the middle of each positioning column (10) for the fixed bolt (7) to pass through, and each clearance hole (12) is trumpet-shaped with a large upper end and a small lower end; A positioning hole (11) corresponding to each positioning column (10) is formed in the surrounding purlin (2), and each positioning column (10) passes through the corresponding positioning hole (11) in the vertical direction.

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