Deep foundation pit supporting structure for pipe jacking construction

Abstract

The utility model relates to the field of foundation pit supporting, and particularly discloses a deep foundation pit supporting structure for pipe jacking construction, which comprises a supporting mechanism, a supporting mechanism, a supporting mechanism and a supporting mechanism, the positioning mechanism comprises a positioning frame assembly used for limiting movement of the supporting frame assembly, a positioning plate assembly clamped and embedded in the positioning frame assembly in a sliding mode and a positioning steel chisel used for limiting movement of the positioning frame assembly. A soil layer can be prevented from collapsing through the supporting frame assembly, the positioning plate assembly is moved upwards, the positioning frame assembly is embedded into the supporting frame assembly and then embedded into a rammed earth layer, then the positioning plate assembly is placed on the rammed earth layer, and a positioning steel chisel penetrates through the positioning plate assembly and then is embedded into the positioning frame assembly and the rammed earth layer. The positioning frame assembly can be prevented from moving, and therefore the function of fixing the supporting frame assembly is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit support, in particular to a deep foundation pit support structure for pipe jacking construction. Background Art

[0002] The pipe jacking construction process refers to the process of excavation and support by pipe jacking when constructing a tunnel underground. The process usually includes the following steps: determining the construction plan, preparing construction equipment and materials, pre-treating the ground, excavating the pipe jacking, supporting and reinforcing, installing underground equipment, laying and connecting pipelines, and inspecting and accepting the construction quality. In pipe jacking construction, a deep foundation pit needs to be dug in advance for the installation of various equipment, and in order to avoid collapse, the deep foundation pit needs to be supported.

[0003] The existing Chinese patent CN113373943A discloses a deep foundation pit support structure for pipe jacking construction, which relates to the field of deep foundation pit support technology. The following scheme is now proposed: it includes multiple support assemblies, each of which is fixed on a mounting seat in the foundation pit, a support plate is inserted in the mounting seat, a reinforcement structure is arranged on the support plate, a series rod is fixed on the support plate, and adjacent support assemblies are connected by a universal joint structure; an L-shaped support plate is fixed on each support plate, and a circumferential support plate is commonly arranged on the inner side of the multiple L-shaped support plates, and a protective net is arranged on the circumferential support plate. The present invention provides circumferential support for the support plate by clamping the circumferential support plate on the L-shaped support plate, and the circumferential support plate is locked and fixed by a locking nut, thereby further increasing the support effect; the locking nut is used to fix it, thereby preventing objects from falling on the foundation pit and causing harm to the staff, thereby increasing safety.

[0004] The above foundation pit support structure cannot support the soil layer at the edge of the foundation pit when in use, and the soil layer is prone to collapse. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a deep foundation pit supporting structure for pipe jacking construction, so as to solve the problem that the soil layer at the edge of the foundation pit is easy to collapse in the prior art.

[0006] A deep foundation pit support structure for pipe jacking construction comprises: a support mechanism, including a support frame assembly, used to connect a group of positioning bolts of the support frame assembly; a positioning mechanism, including a positioning frame assembly for limiting the movement of the support frame assembly, a positioning plate assembly slidably embedded in the positioning frame assembly, and a positioning steel chisel for limiting the movement of the positioning frame assembly.

[0007] Preferably, the positioning frame assembly includes a limit plate, one side of the limit plate is fixedly connected to a positioning rod, a positioning hole is opened on the positioning rod, the upper end of the limit plate is fixedly connected to a group of guide rods, and the upper ends of the group of guide rods are fixedly connected to a limit connecting rod.

[0008] Preferably, the positioning plate assembly comprises a positioning plate body, and a second positioning hole is formed on the positioning plate body.

[0009] Preferably, the positioning plate body is limitedly slidably embedded on the guide rod through a limiting connecting rod, the positions of the positioning hole 2 and the positioning hole 1 correspond to each other, and the positioning steel bar will be embedded in the positioning hole 1 after passing through the positioning hole 2.

[0010] Preferably, the support frame assembly includes an L-shaped bracket, a positioning side plate is fixedly connected to the upper edge of the L-shaped bracket, a connecting strip is fixedly connected to one side of the L-shaped bracket, and a connecting groove is provided on the other side of the L-shaped bracket.

[0011] Preferably, the adjacent L-shaped brackets are connected to each other after the positioning bolts penetrate the positioning side plates, the connecting strips can be embedded in the connecting grooves on the adjacent L-shaped brackets, and the positioning rods can penetrate the L-shaped brackets.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the soil layer can be prevented from collapsing by the support frame assembly, the positioning plate assembly is moved upward, the positioning frame assembly is embedded in the support frame assembly and then embedded in the rammed earth layer, and then the positioning plate assembly is placed on the rammed earth layer, and a positioning steel bar is used to penetrate the positioning plate assembly and then embed it in the positioning frame assembly and the rammed earth layer, which can prevent the positioning frame assembly from moving, thereby achieving the effect of fixing the support frame assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0015] Figure 3 This is a structural schematic diagram of the positioning frame assembly of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the support mechanism of the utility model.

[0017] In the figure: 1. Support mechanism; 11. Support frame assembly; 111. L-shaped bracket; 112. Positioning side plate; 113. Connecting strip; 114. Connecting groove; 12. Positioning bolt; 2. Positioning mechanism; 21. Positioning frame assembly; 211. Limiting plate; 212. Positioning rod; 213. Positioning hole one; 214. Guide rod; 215. Limiting connecting rod; 22. Positioning plate assembly; 221. Positioning plate body; 222. Positioning hole two; 23. Positioning steel chisel; 3. Rammed earth layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figures 1 to 4 As shown:

[0020] Embodiment 1: The utility model provides a deep foundation pit support structure for pipe jacking construction, comprising: a support mechanism 1, comprising a support frame assembly 11, a positioning bolt 12 for connecting a group of support frame assemblies 11; a positioning mechanism 2, comprising a positioning frame assembly 21 for limiting the movement of the support frame assembly 11, a positioning plate assembly 22 slidably embedded in the positioning frame assembly 21, and a positioning steel chisel 23 for limiting the movement of the positioning frame assembly 21;

[0021] Among them, after the foundation pit is dug and the soil layer is compacted, the support frame assembly 11 is placed at the edge of the foundation pit. The support frame assembly 11 can prevent the soil layer from collapsing, and the positioning plate assembly 22 is moved upward. The positioning frame assembly 21 is embedded in the support frame assembly 11 and then embedded in the rammed earth layer 3, and then the positioning plate assembly 22 is placed on the rammed earth layer 3. The positioning steel bar 23 is used to penetrate the positioning plate assembly 22 and then embedded in the positioning frame assembly 21 and the rammed earth layer 3. The movement of the positioning frame assembly 21 can be avoided, thereby achieving the function of fixing the support frame assembly 11.

[0022] Specifically, the positioning frame assembly 21 includes a limit plate 211, one side of the limit plate 211 is fixedly connected to a positioning rod 212, the positioning rod 212 is provided with a positioning hole 213, the upper end of the limit plate 211 is fixedly connected to a group of guide rods 214, and the upper end of the group of guide rods 214 is fixedly connected to a limit connecting rod 215.

[0023] Specifically, the positioning plate assembly 22 includes a positioning plate body 221 , and a second positioning hole 222 is formed in the positioning plate body 221 .

[0024] Specifically, the positioning plate body 221 is limitedly slidably embedded on the guide rod 214 through the limiting link 215, the positions of the second positioning hole 222 and the first positioning hole 213 correspond to each other, and the positioning steel bar 23 will be embedded in the first positioning hole 213 after passing through the second positioning hole 222.

[0025] As can be seen from the above, the positioning plate body 221 is moved upward along a group of guide rods 214. At this time, the staff can easily pass the positioning rod 212 through the fixed support frame assembly 11, and the positioning plate body 221 can be limited by the limiting link 215. Pushing the limiting plate 211 can make the positioning rod 212 pass through the fixed support frame assembly 11 and then embed into the rammed earth layer 3. The positioning plate body 221 is placed on the rammed earth layer 3, and the positioning steel drill 23 is used to pass through the positioning hole 222 and then embed into the positioning hole 1 213 and the rammed earth layer 3, so that the positioning rod 212 can be fixed, thereby fixing the fixed support frame assembly 11.

[0026] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the support frame assembly 11 includes an L-shaped bracket 111, a positioning side plate 112 is fixedly connected to the upper edge of the L-shaped bracket 111, a connecting strip 113 is fixedly connected to one side of the L-shaped bracket 111, and a connecting groove 114 is provided on the other side of the L-shaped bracket 111.

[0027] Specifically, adjacent L-shaped brackets 111 are connected to each other after the positioning bolts 12 penetrate the positioning side plates 112 , the connecting strips 113 can be embedded in the connecting grooves 114 on the adjacent L-shaped brackets 111 , and the positioning rods 212 can penetrate the L-shaped brackets 111 .

[0028] As can be seen from the above, the connection effect can be achieved by embedding the connecting strip 113 on one side of the L-shaped bracket 111 into the adjacent connecting groove 114, and then the adjacent L-shaped brackets 111 are connected to each other after passing through the positioning bolts 12 through the positioning side plates 112, which can prevent the L-shaped brackets 111 from moving.

[0029] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0034] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A deep foundation pit support structure for pipe jacking construction, characterized in that: include: A support mechanism (1) comprises a support frame assembly (11), and a set of positioning bolts (12) for connecting the support frame assembly (11); The positioning mechanism (2) comprises a positioning frame assembly (21) for limiting the movement of the support frame assembly (11), a positioning plate assembly (22) slidably engaged with the positioning frame assembly (21), and a positioning steel chisel (23) for limiting the movement of the positioning frame assembly (21).

2. A deep foundation pit support structure for pipe jacking construction as claimed in claim 1, characterized in that: The positioning frame assembly (21) comprises a limiting plate (211), one side of the limiting plate (211) is fixedly connected to a positioning rod (212), a positioning hole (213) is provided on the positioning rod (212), the upper end of the limiting plate (211) is fixedly connected to a group of guide rods (214), and the upper ends of the group of guide rods (214) are fixedly connected to a limiting connecting rod (215).

3. A deep foundation pit support structure for pipe jacking construction as claimed in claim 2, characterized in that: The positioning plate assembly (22) comprises a positioning plate body (221), and a second positioning hole (222) is provided on the positioning plate body (221).

4. A deep foundation pit support structure for pipe jacking construction as claimed in claim 3, characterized in that: The positioning plate body (221) is limitedly slidably engaged on the guide rod (214) through a limiting connecting rod (215); the positions of the second positioning hole (222) and the first positioning hole (213) correspond to each other; and the positioning steel chisel (23) is embedded in the first positioning hole (213) after passing through the second positioning hole (222).

5. A deep foundation pit support structure for pipe jacking construction as claimed in claim 3, characterized in that: The support frame assembly (11) comprises an L-shaped bracket (111), a positioning side plate (112) is fixedly connected to the upper edge of the L-shaped bracket (111), a connecting strip (113) is fixedly connected to one side of the L-shaped bracket (111), and a connecting groove (114) is provided on the other side of the L-shaped bracket (111).

6. A deep foundation pit support structure for pipe jacking construction as claimed in claim 5, characterized in that: The adjacent L-shaped brackets (111) are connected to each other after the positioning bolts (12) penetrate the positioning side plates (112); the connecting strips (113) can be embedded in the connecting grooves (114) on the adjacent L-shaped brackets (111); and the positioning rods (212) can penetrate the L-shaped brackets (111).

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