Support changing method for vertical support of foundation pit

Abstract

The invention belongs to the technical field of engineering construction, and discloses a support changing method for a vertical support of a foundation pit, which comprises the following steps of: firstly, measuring and setting out, and respectively connecting bearing pieces at two ends of a support piece; then the supporting pieces connected with the bearing pieces are hoisted between the foundation top plate and the foundation bottom plate, the bearing piece at one end of each supporting piece is connected to the foundation top plate, the bearing piece at the other end of each supporting piece and the foundation bottom plate are oppositely arranged in a spaced mode, and then filling and fixing are conducted between the bearing piece at the other end of each supporting piece and the foundation bottom plate; and the bearing piece at the other end of the supporting piece is fixedly connected to the foundation slab, so that the vertical support is conveniently dismounted subsequently. Then the bearing piece at one end of the supporting piece is fixedly connected with the horizontal support, and finally, after the quality of the supporting piece is accepted and accepted, the vertical support is dismantled. Through the arrangement, the support changing method for the vertical support of the foundation pit can meet the construction requirements of a basement structure, and the construction safety and the operation efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a support replacement method for vertical support of a foundation pit. Background Art

[0002] As an important part of the construction of various types of building foundations, foundation pit engineering has increasingly higher construction technology and safety requirements. When the vertical support lattice columns of the foundation pit enclosure affect the construction of the underground structure, in order to ensure the quality of basement construction and the progress of the project, the stress is generally transferred to other structures with sufficient bearing capacity through force transmission components, and then the vertical support lattice columns are replaced to achieve a new force balance for the entire enclosure system. However, there is currently a lack of a better replacement device and method, which cannot meet the requirements of basement structure construction while ensuring the safety of the enclosure support structure system. Summary of the invention

[0003] The object of the present invention is to provide a method for replacing vertical supports of foundation pits, which can meet the requirements of basement structure construction and improve the safety and operation efficiency of construction.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A method for replacing vertical supports of a foundation pit, comprising:

[0006] Step 1: measure and lay out, and connect the bearing members at both ends of the support member;

[0007] Step 2: hoist the support member connected with the bearing member between the foundation top plate and the foundation bottom plate, so that the bearing member at one end of the support member is connected to the foundation top plate, and the bearing member at the other end is facing the foundation bottom plate and spaced apart;

[0008] Step 3: Fill and fix between the bearing member at the other end of the support member and the base bottom plate, so that the bearing member at the other end of the support member is fixedly connected to the base bottom plate;

[0009] Step 4: Fix the bearing member at one end of the support member to the horizontal support;

[0010] Step 5: After the quality of the support parts is accepted, remove the vertical support.

[0011] Optionally, in step one, along the horizontal direction, the cross-sectional area of ​​the bearing member is larger than the cross-sectional area of ​​the supporting member.

[0012] Optionally, the two bearing members are arranged parallel to each other and coaxially, and are welded to the supporting member.

[0013] Optionally, a plurality of support members are provided, and the plurality of support members are parallel to each other and spaced apart between two bearing members.

[0014] Optionally, the support members are fixedly connected by fixing members, and a plurality of fixing members are provided, and the plurality of fixing members are spaced apart along the extension direction of the support members.

[0015] Optionally, in step 2, the support members are hoisted on opposite sides of the vertical support.

[0016] Optionally, in step three, a steel wedge is clamped between the bearing member at the other end of the support member and the foundation slab.

[0017] Optionally, in step four, the bearing member at one end of the support member is fixedly connected to the horizontal support via a connecting member, and the connecting member is clamped on the bearing member at one end of the support member and the horizontal support.

[0018] Optionally, there are multiple connecting members, and the multiple connecting members are arranged at intervals.

[0019] Optionally, the supporting member is a columnar structure, and the bearing member is a plate-like structure.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a method for replacing support for vertical support of foundation pits. First, measurement and setting out are performed to ensure the accuracy of support installation and position correctness, and bearing members are connected to the two ends of the support members respectively to increase the connection area between the support members and the foundation top plate and the foundation bottom plate, thereby facilitating the subsequent installation and fixation of the support members. Then, the support member connected with the bearing member is hoisted between the foundation top plate and the foundation bottom plate, so that the support member connected with the bearing member is accurately positioned and preliminarily installed, so that the bearing member at one end of the support member is connected to the foundation top plate, and the bearing member at the other end is opposite to the foundation bottom plate and arranged at intervals, and then the bearing member at the other end of the support member is filled and fixed between the foundation bottom plate, so that the bearing member at the other end of the support member is fixedly connected to the foundation bottom plate, thereby enhancing the stability and bearing capacity of the entire replacement support structure, ensuring the effective role of the support member in the vertical support of the foundation pit, so as to facilitate the subsequent removal of the vertical support. Then, the bearing member at one end of the support member is fixedly connected to the horizontal support, which can further disperse and transmit the stress of the vertical support, so that the entire enclosure system reaches a new force balance. Finally, after the quality of the support parts is accepted, the vertical support is removed to ensure the smooth construction of the basement structure. Through the above settings, the support replacement method for the vertical support of the foundation pit of this application can meet the requirements of the basement structure construction and improve the safety and operation efficiency of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of a method for replacing vertical supports of a foundation pit provided by an embodiment of the present invention;

[0023] Figure 2is a schematic diagram of the installation of the support member and the bearing member provided in an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0025] Figure 4 It is a schematic diagram of the installation of the connecting piece provided in an embodiment of the present invention.

[0026] In the figure:

[0027] 100. Foundation top plate; 200. Foundation bottom plate; 1. Support member; 2. Bearing member; 3. Fixing member; 4. Connecting member. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1-Figure 4 As shown, this embodiment provides a method for replacing vertical supports of a foundation pit, comprising:

[0033] Step 1: measure and lay out, and connect the bearing members 2 at both ends of the support member 1 respectively.

[0034] Specifically, in step one, along the horizontal direction, the cross-sectional area of ​​the bearing member 2 is larger than the cross-sectional area of ​​the support member 1, thereby increasing the connection area and strength between the support member 1 and the base top plate 100 and the base bottom plate 200, and helping to enhance the stability and bearing capacity of the entire support replacement structure.

[0035] More specifically, the two bearing members 2 are parallel to each other and coaxially arranged and welded to the support member 1 , which can ensure that the overall structure is not subjected to eccentric force and improve the connection strength between the bearing member 2 and the support member 1 .

[0036] Specifically, a plurality of support members 1 are provided, and the plurality of support members 1 are parallel to each other and spaced apart between two bearing members 2, which not only helps to disperse stress, but also improves the connection strength between the support member 1 and the bearing member 2, thereby improving the stability of the overall structure.

[0037] Specifically, the supports 1 are fixedly connected by fixing members 3, and a plurality of fixing members 3 are provided, and the plurality of fixing members 3 are arranged at intervals along the extension direction of the supports 1, further enhancing the connection strength between the supports 1. The fixing members 3 can be steel pipes or steel plates, which will not be described in detail here.

[0038] Step 2: hoist the support member 1 connected with the bearing member 2 between the foundation top plate 100 and the foundation bottom plate 200, so that the bearing member 2 at one end of the support member 1 is connected to the foundation top plate 100, and the bearing member 2 at the other end is opposite to the foundation bottom plate 200 and is spaced apart.

[0039] Specifically, in step 2, the support member 1 is hoisted on two opposite sides of the vertical support to ensure that the support member 1 can correctly support the space between the foundation top plate 100 and the foundation bottom plate 200 .

[0040] Step 3: Fill and fix between the bearing member 2 at the other end of the supporting member 1 and the basic bottom plate 200 , so that the bearing member 2 at the other end of the supporting member 1 is fixedly connected to the basic bottom plate 200 .

[0041] Specifically, in step three, a steel wedge is clamped between the bearing member 2 at the other end of the support member 1 and the base slab 200, thereby enhancing the connection strength between the bearing member 2 at the other end of the support member 1 and the base slab 200, which helps to improve the stability and bearing capacity of the entire replacement support structure.

[0042] Step 4: Fixedly connect the bearing member 2 at one end of the supporting member 1 to the horizontal support 300 .

[0043] Specifically, in step 4, the bearing member 2 at one end of the support member 1 is fixedly connected to the horizontal support 300 through the connecting member 4, which helps to disperse and transfer the stress of the vertical support, so that the entire enclosure system reaches a new force balance. The connecting member 4 is hooped on the bearing member 2 at one end of the support member 1 and the horizontal support 300, which can ensure the firmness and stability of the connection between the bearing member 2 and the horizontal support 300.

[0044] More specifically, a plurality of connecting members 4 are provided, and the plurality of connecting members 4 are arranged at intervals, which further enhances the reliability and stability of the connection between the bearing member 2 and the horizontal support 300 , and helps to improve the safety and stability of the foundation pit retaining structure.

[0045] Step 5: After the quality of support 1 is accepted, remove the vertical support.

[0046] Specifically, in this embodiment, the support member 1 is a columnar structure, and the bearing member 2 is a plate-like structure, so as to facilitate on-site processing and manufacturing. In other embodiments, the support member 1 and the bearing member 2 can both adopt a rod-like structure, that is, as long as the above-mentioned functions can be achieved, the specific structures of the above-mentioned components are not limited too much.

[0047] More specifically, in this embodiment, the support member 1 is a steel pipe column, which uses a seamless steel pipe with a diameter of 159mm and a wall thickness of 10mm; the bearing member 2 is a steel plate with a width of 450mm×length of 900mm and a thickness of 12mm; the fixing member 3 between the steel pipe columns uses a thick steel plate with a width of 200mm×length of 400mm and a thickness of 12mm; the connecting member 4 uses a circular steel bar with a diameter of 25mm; the thick steel plate is welded and fixed between the steel pipe columns, and the steel plates are welded at both ends of the steel pipe columns, and then the circular steel bar hoop is set on the steel plate at one end of the steel pipe column and the horizontal support 300 to improve the connection strength and stability of the overall structure, which is conducive to improving the bearing capacity of the support structure and facilitating the dispersion of stress. It can be understood that the technical personnel in this field can adjust the specific structure and parameters of the above components based on the above content, which will not be repeated here.

[0048] It should be noted that the present embodiment provides a method for replacing vertical supports for foundation pits. First, measurement and layout are performed to ensure the accuracy of installation and correct positioning of the support member 1, and bearing members 2 are respectively connected to both ends of the support member 1. The bearing members 2 are used to connect the foundation top plate 100 and the foundation bottom plate 200 to increase the connection area between the support member 1 and the foundation top plate 100 and the foundation bottom plate 200, thereby facilitating the subsequent installation and fixation of the support member 1. Then, the support member 1 connected with the bearing member 2 is hoisted between the foundation top plate 100 and the foundation bottom plate 200, so as to facilitate the precise positioning and preliminary installation of the support member 1 connected with the bearing member 2, so that the bearing member 2 at one end of the support member 1 is connected to the foundation top plate 100, and the bearing member 2 at the other end is opposite to the foundation bottom plate 200 and arranged at intervals, and then the bearing member 2 at the other end of the support member 1 and the foundation bottom plate 200 are filled and fixed, so that the bearing member 2 at the other end of the support member 1 is fixedly connected to the foundation bottom plate 200, thereby enhancing the stability and bearing capacity of the entire replacement support structure, ensuring the effective role of the support member 1 in the vertical support of the foundation pit, so as to facilitate the subsequent removal of the vertical support. Then, the bearing member 2 at one end of the support member 1 is fixedly connected to the horizontal support 300, which can further disperse and transfer the stress of the vertical support, so that the entire enclosure system reaches a new force balance. Finally, after the quality acceptance of the support member 1 is qualified, the vertical support is removed to ensure the smooth progress of the basement structure construction. Through the above arrangement, the support replacement method for vertical support of foundation pit in this embodiment can meet the requirements of basement structure construction and improve the construction safety and operation efficiency.

[0049] In addition, the support replacement method for the vertical support of the foundation pit of this embodiment has the following advantages:

[0050] 1. Through reasonable force transmission design and structural layout, ensure that after the original vertical support is removed, the new support structure can effectively bear the lateral pressure and deformation of the foundation pit and maintain the stability of the foundation pit.

[0051] 2. Shorten the construction period: When carrying out the support replacement construction, it can be carried out in parallel with other construction processes (such as the main structure construction of the basement), thus avoiding the time waste caused by waiting for the removal and new construction of vertical supports, thereby effectively shortening the total construction period of the entire foundation pit project.

[0052] 3. Cost savings: By replacing the vertical supporting lattice columns that affect the construction of underground structures, materials such as formwork, wooden beams and pipe racks can be turned over in a timely manner, thereby reducing material rental costs and saving construction costs.

[0053] 4. High construction quality: The vertical supporting lattice columns that affect the construction of the underground structure are replaced, so that the main structure of the basement can be formed in one construction, solving the problems of leakage and cracking caused by the phased construction of this part.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for replacing vertical supports of foundation pits, characterized in that: include: Step 1: measuring and setting out, and connecting the bearing members (2) at both ends of the support member (1); Step 2: hoist the support member (1) connected with the bearing member (2) between the foundation top plate (100) and the foundation bottom plate (200), so that the bearing member (2) at one end of the support member (1) is connected to the foundation top plate (100), and the bearing member (2) at the other end is opposite to the foundation bottom plate (200) and arranged at a distance; Step 3: Fill and fix between the bearing member (2) at the other end of the support member (1) and the base bottom plate (200), so that the bearing member (2) at the other end of the support member (1) is fixedly connected to the base bottom plate (200); Step 4: fix the bearing member (2) at one end of the supporting member (1) to the horizontal support (300); Step 5: After the quality of the support member (1) is accepted, remove the vertical support.

2. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: In step one, along the horizontal direction, the cross-sectional area of ​​the bearing member (2) is greater than the cross-sectional area of ​​the supporting member (1).

3. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: The two bearing members (2) are arranged parallel to each other and coaxially, and are welded to the supporting member (1).

4. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: A plurality of support members (1) are provided, and the plurality of support members (1) are parallel to each other and are arranged at intervals between two bearing members (2).

5. The method for replacing vertical support of foundation pit according to claim 4, characterized in that: The support members (1) are fixedly connected to each other via a fixing member (3), a plurality of fixing members (3) are provided, and the plurality of fixing members (3) are arranged at intervals along the extension direction of the support member (1).

6. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: In step 2, the support member (1) is hoisted on two opposite sides of the vertical support.

7. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: In step three, a steel wedge is clamped between the bearing member (2) at the other end of the support member (1) and the base plate (200).

8. The method for replacing vertical support of foundation pit according to claim 1, characterized in that: In step 4, the bearing member (2) at one end of the support member (1) is fixedly connected to the horizontal support (300) via a connecting member (4), and the connecting member (4) is clamped on the bearing member (2) at one end of the support member (1) and the horizontal support (300).

9. The method for replacing vertical support of foundation pit according to claim 8, characterized in that: A plurality of connecting members (4) are provided, and the plurality of connecting members (4) are arranged at intervals.

10. The method for replacing vertical support of a foundation pit according to any one of claims 1 to 9, characterized in that: The support member (1) is a columnar structure, and the bearing member (2) is a plate-like structure.

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