Foundation pit lattice column settlement deformation compensation device

Abstract

The present invention relates to a settlement deformation compensation device for a lattice column in a foundation pit, comprising: a lattice column, a lattice column settlement deformation compensation structure, and a settlement deformation compensation stroke measurement structure; the lattice column includes a first lattice column body and a second lattice column body; the lattice column settlement deformation compensation structure and the settlement deformation compensation stroke measurement structure are symmetrically supported between the first lattice column body and the second lattice column body; when the foundation pit is excavated and the inner support member is supported by the top of the first lattice column body, when it is monitored that the lattice column undergoes settlement deformation, the settlement deformation of the lattice column is compensated by using the lattice column settlement deformation compensation structure, and then the compensation stroke of the lattice column settlement deformation compensation structure is measured by the settlement deformation compensation stroke measurement structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed. The present invention can avoid the damage of the inner support member and the failure of the support system caused by the settlement deformation of the lattice column.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit engineering, and particularly to a settlement deformation compensation device for a lattice column in a foundation pit. Background Art

[0002] In foundation pit engineering, lattice columns are often used to support the self-weight and construction loads of internal support members arranged horizontally. At present, traditional foundation pit lattice columns are welded by angle steels and rectangular batten plates, and their lengths are fixed after processing. However, with the increase of the excavation depth of the foundation pit and the layered construction of the internal support system, the settlement deformation of the lattice column accumulates continuously. As a result, the connection nodes between the lattice column and the internal support members are significantly deformed, and even the failure of the internal support members and the failure of the support system are caused. The settlement deformation of the lattice column seriously threatens the safety of the support structure and the construction safety of the foundation pit.

[0003] The traditional solution usually sets a compensation structure at the top of the lattice column to support the building above. In this way, when the lattice column is compressed and undergoes settlement deformation, only the building structure above the top of the lattice column can be compensated for settlement deformation through the compensation structure, and the settlement deformation of the lattice column and the multi-layer horizontal internal supports connected to the lattice column cannot be compensated. This will lead to the continuous accumulation of the above-mentioned settlement deformation of the lattice column and the deformation and damage of related structures, affecting the safety of the support structure and the construction safety of the foundation pit. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one technical problem in the background art, and provide a settlement deformation compensation device for a foundation pit lattice column.

[0005] To achieve the above purpose, the present invention provides a settlement deformation compensation device for a foundation pit lattice column, including: a lattice column, a settlement deformation compensation structure for the lattice column, and a settlement deformation compensation stroke measurement structure;

[0006] The lattice column includes a first lattice column body and a second lattice column body, and the first lattice column body is detachably supported on the top of the second lattice column body;

[0007] The settlement deformation compensation structure for the lattice column and the settlement deformation compensation stroke measurement structure are symmetrically supported between the first lattice column body and the second lattice column body;

[0008] When the foundation pit is excavated and the internal support member is supported through the top of the first lattice column body, when it is monitored that the lattice column undergoes settlement deformation, the settlement deformation of the lattice column is compensated by using the settlement deformation compensation structure for the lattice column, and then the compensation stroke of the settlement deformation compensation structure for the lattice column is measured through the settlement deformation compensation stroke measurement structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed.

[0009] According to one aspect of the present invention, the first lattice column body includes: a first lattice column support and a first adapter;

[0010] The first lattice column support includes 4 first lattice column angle steels arranged circumferentially and a plurality of first batten plates forming a multi-layer circumferential connection structure, and each layer of the circumferential connection structure is welded at intervals on the outer wall of each of the first lattice column angle steels;

[0011] The first adapter is installed at the bottom end of the first lattice column support and is detachably connected to the second lattice column body through the first adapter.

[0012] According to one aspect of the present invention, the first adapter includes: a first U-shaped mounting plate, U-shaped steel;

[0013] The side wall of the first U-shaped mounting plate is installed on the side wall of the bottom end of the first lattice column support through fixing bolts;

[0014] Two of the U-shaped steels are symmetrically supported horizontally at the center of the bottom of the first U-shaped mounting plate.

[0015] According to one aspect of the present invention, the second lattice column body includes: a second lattice column support and a second adapter;

[0016] The second lattice column support includes 4 second lattice column angle steels arranged circumferentially and a plurality of second batten plates forming a multi-layer circumferential connection structure, and each layer of the circumferential connection structure is welded at intervals on the outer wall of each of the second lattice column angle steels;

[0017] The second adapter is installed at the top end of the second lattice column support and is cooperatively connected to the first adapter through the second adapter.

[0018] According to one aspect of the present invention, the second adapter includes: a second U-shaped mounting plate;

[0019] The side wall of the second U-shaped mounting plate is installed on the side wall of the top end of the second lattice column support through fixing bolts;

[0020] A transfer hole is provided in the center of the second U-shaped mounting plate. After the U-shaped steel passes through the transfer hole, the first lattice column body is rotated 90 degrees, and the first lattice column body and the second lattice column body are supported by a lattice column settlement deformation compensation structure to achieve the detachable connection of the first lattice column body and the second lattice column body.

[0021] According to one aspect of the present invention, the lattice column settlement deformation compensation structure includes a plurality of hydraulic jacks and a plurality of oil pipes;

[0022] The bottom ends of the hydraulic jacks are symmetrically supported on the top surface of the second U-shaped mounting plate and are located on both sides of the transfer holes, and the top ends are supported on the bottom surface of the first U-shaped mounting plate;

[0023] Each of the oil pipes is cooperatively connected with each of the hydraulic jacks and is used for conveying hydraulic oil to each of the hydraulic jacks, so as to support and compensate for settlement deformation of the first lattice column body and the second lattice column body through each of the hydraulic jacks.

[0024] According to one aspect of the present invention, the settlement deformation compensation stroke measurement structure includes: a wire-type displacement sensor and a wire fixing ring;

[0025] The wire-type displacement sensors are symmetrically mounted on the bottom surface of the first U-shaped mounting plate and are located on both sides of the U-shaped steel;

[0026] The wire fixing rings are symmetrically mounted on the top surface of the second U-shaped mounting plate and are located on both sides of the transfer holes;

[0027] The wires of the wire-type displacement sensors are respectively fixed on the wire fixing rings;

[0028] The compensation stroke of the lattice column settlement deformation compensation structure is measured by the wire-type displacement sensor.

[0029] According to the solution of the present invention, the heights of the first lattice column body and the second lattice column body may be the same or different, and can be specifically adjusted according to the on-site construction requirements. The lattice column settlement deformation compensation structure of the present invention is mainly used to compensate for the settlement deformation of the first lattice column body and the above structures. Therefore, during on-site construction, the multi-layer horizontal internal supports cooperating with the lattice columns are actually connected to the first lattice column body. Through the settlement deformation compensation structure, the settlement deformation of the first lattice column body, the multi-layer internal support structure connected to it, and the building structure above the lattice column can be simultaneously compensated, effectively solving the defect in the traditional solution that only the building structure above the lattice column can be compensated, thereby ensuring the safety of the support structure and the foundation pit construction.

[0030] According to the solution of the present invention, a jacking structure is provided inside the deformation compensation device of the present invention, which can timely adjust the length of the lattice column according to the settlement deformation of the lattice column during foundation pit construction, and avoid the damage of the internal support members and the failure of the support system caused by the settlement deformation of the lattice column.

[0031] According to the solution of the present invention, the present invention can keep the top elevation of the lattice column unchanged, ensure the support strength and stability of the internal support members in the foundation pit, and avoid the problem of support failure. At the same time, through the assembled installation and disassembly of the foundation pit lattice column settlement deformation compensation device, the efficient reuse of components is realized to meet the actual needs in the field of foundation pit engineering.

[0032] According to the solution of the present invention, the lattice column settlement deformation compensation structure is arranged in the lattice column, which can keep the overall support strength of the lattice column unchanged and will not reduce the support capacity of the internal support members in the foundation pit. Moreover, when settlement deformation occurs, compensation can be achieved by changing the length of the lattice column itself. This method effectively ensures the support strength of the lattice column itself and at the same time effectively avoids the problem that arranging the compensation structure at the top support position of the lattice column is likely to cause the compensation structure to be damaged and fail, further leading to the damage of the internal support members and the failure of the support system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematically showing a perspective view of a foundation pit lattice column settlement deformation compensation device according to an embodiment of the present invention;

[0034] Figure 2 Schematically showing a perspective view of a first adapter according to an embodiment of the present invention;

[0035] Figure 3 Schematically showing a front view of a second lattice column body according to an embodiment of the present invention;

[0036] Figure 4 Schematically showing a top view of a second lattice column body according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Now the content of the present invention will be described with reference to exemplary embodiments. It should be understood that the described embodiments are only for enabling those of ordinary skill in the art to better understand and thus implement the content of the present invention, rather than implying any limitation to the scope of the present invention.

[0038] As used herein, the term "comprising" and its variants are to be construed as open-ended terms meaning "including but not limited to". The term "based on" is to be construed as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be construed as "at least one embodiment".

[0039] Figure 1 Schematically showing a perspective view of a foundation pit lattice column settlement deformation compensation device according to an embodiment of the present invention. As Figure 1 shown, in this embodiment, the foundation pit lattice column settlement deformation compensation device includes: a lattice column, a lattice column settlement deformation compensation structure, and a settlement deformation compensation stroke measurement structure;

[0040] The lattice column includes a first lattice column body and a second lattice column body, and the first lattice column body is detachably supported on the top of the second lattice column body;

[0041] The lattice column settlement deformation compensation structure and the settlement deformation compensation stroke measurement structure are symmetrically supported between the first lattice column body and the second lattice column body;

[0042] When the foundation pit is excavated and the internal support member is supported through the top of the first lattice column body, when it is monitored that the lattice column undergoes settlement deformation, the lattice column settlement deformation compensation structure is used to compensate for the settlement deformation of the lattice column, and then the settlement deformation compensation stroke measurement structure measures the compensation stroke of the lattice column settlement deformation compensation structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed.

[0043] Furthermore, Figure 2 Schematically shows a perspective view of the first adapter according to an embodiment of the present invention. As Figure 1 and Figure 2 shown, in this embodiment, the first lattice column body includes: a first lattice column support body and a first adapter;

[0044] The first lattice column support body includes 4 first lattice column angle steels 1 arranged circumferentially and several first lacing plates 2 forming a multi-layer circumferential connection structure, and each layer of circumferential connection structure is welded to the outer wall of each first lattice column angle steel 1 at intervals;

[0045] The first adapter is installed at the bottom end of the first lattice column support body and is detachably connected to the second lattice column body through the first adapter.

[0046] Furthermore, as Figure 2 shown, in this embodiment, the first adapter includes: a first U-shaped mounting plate 3, U-shaped steel 4;

[0047] The side wall of the first U-shaped mounting plate 3 is installed on the side wall of the bottom end of the first lattice column support body through a fixing bolt 5;

[0048] Two U-shaped steels 4 are symmetrically supported horizontally at the center of the bottom of the first U-shaped mounting plate 3, and the lower flange plates 6 of the two U-shaped steels 4 are used to hook against the side wall of the following adapter hole 10.

[0049] Furthermore, Figure 3 Schematically shows a front view of the second lattice column body according to an embodiment of the present invention. As Figure 1 and Figure 3 shown, in this embodiment, the second lattice column body includes: a second lattice column support body and a second adapter;

[0050] The second lattice column support body includes 4 second lattice column angle steels 7 arranged circumferentially and several second lacing plates 8 forming a multi-layer circumferential connection structure, and each layer of circumferential connection structure is welded to the outer wall of each second lattice column angle steel 7 at intervals;

[0051] The second adapter is installed at the top of the second lattice column support, and is cooperatively connected with the first adapter through the second adapter.

[0052] Furthermore, Figure 4 Schematically shows a top view of a second lattice column body according to an embodiment of the present invention. As Figure 1 、 Figure 3 and Figure 4 shown, in this embodiment, the second adapter includes: a second U-shaped mounting plate 9;

[0053] The side walls of the second U-shaped mounting plate 9 are installed on the top side walls of the second lattice column support through fixing bolts 5;

[0054] A rectangular transfer hole 10 is provided in the center of the second U-shaped mounting plate 9. After the U-shaped steel 4 passes through the transfer hole, the first lattice column body is rotated 90 degrees, and the first lattice column body and the second lattice column body are supported by the lattice column settlement deformation compensation structure, realizing the detachable connection between the first lattice column body and the second lattice column body.

[0055] Furthermore, as Figure 1 、 Figure 3 and Figure 4 shown, in this embodiment, the lattice column settlement deformation compensation structure includes a plurality of hydraulic jacks 11 and a plurality of oil pipes 12;

[0056] The bottom ends of the hydraulic jacks 11 are symmetrically supported on the top surface of the second U-shaped mounting plate 9 and are located on both sides of the transfer hole 10, and the top ends are supported on the bottom surface of the first U-shaped mounting plate 3;

[0057] Each oil pipe 12 is cooperatively connected with each hydraulic jack 11 and is used to convey hydraulic oil to each hydraulic jack to support and compensate for the settlement deformation of the first lattice column body and the second lattice column body through each hydraulic jack.

[0058] Furthermore, as Figures 1-4 shown, in this embodiment, the settlement deformation compensation stroke measurement structure includes: a wire-type displacement sensor 13 and a wire fixing ring 14;

[0059] The wire-type displacement sensors 13 are symmetrically installed on the bottom surface of the first U-shaped mounting plate 3 and are located on both sides of the U-shaped steel 4;

[0060] The wire fixing rings 14 are symmetrically installed on the top surface of the second U-shaped mounting plate 9 and are located on both sides of the transfer hole 10;

[0061] The wires of each wire-type displacement sensor are respectively fixed on each wire fixing ring;

[0062] The compensation stroke of the lattice column settlement deformation compensation structure is measured by the wire-type displacement sensor.

[0063] According to the above scheme of the present invention, the actual installation and settlement deformation compensation process of the foundation pit lattice column settlement deformation compensation device of the present invention is as follows:

[0064] 1) A first lattice column support body is formed by welding a plurality of first tie plates 2 and four first lattice column angle steels 1, the U-shaped steel 4 is mounted on the first U-shaped mounting plate 3 by using U-shaped plate fixing bolts, two wire-type displacement sensors 13 are mounted on the bottom surface of the first U-shaped mounting plate 3, and the first U-shaped mounting plate 3 is connected to the bottom end of the first lattice column angle steel 1 by using fixing bolts 5;

[0065] 2) Use a number of second gusset plates 8 and four second lattice column angle steels 7 to weld to form the second lattice column angle steel 7, use hydraulic jack fixing bolts to install four hydraulic jacks 11 on the top surface of the second U-shaped mounting plate 9, weld the cable fixing ring 14 on the top surface of the second U-shaped mounting plate 9 to fix the cable of the cable displacement sensor. And use fixing bolts 5 to connect the second U-shaped mounting plate 9 to the top of the second lattice column angle steel 7;

[0066] 3) Align the axes of the first lattice column support body and the second lattice column support body, insert the lower flange plates 6 of the two U-shaped steels 4 into the rectangular adapter hole 10 in the center of the second U-shaped mounting plate 9, rotate the first lattice column support body 90°, inject hydraulic oil into the four hydraulic jacks 11 through the oil pipe, and the plungers of the four hydraulic jacks 11 extend synchronously to make the lower flange plates 6 of the U-shaped steel 4 fit tightly with the bottom surface of the web of the second U-shaped mounting plate 9, and hang the cable 15 of the cable-type displacement sensor 13 on the cable fixing ring 14, fix the oil pipe of the hydraulic jack 11 and the data cable of the cable-type displacement sensor 13 on the first lattice column angle steel 1, and complete the assembly of the lattice column settlement deformation compensation device;

[0067] 4) Insert the settlement deformation compensation device into the unsolidified column pile concrete. After the column pile concrete solidifies, remove the hydraulic oil in the four hydraulic jacks through the oil pipe. Under the gravity of the first lattice column support body, the bottom surface of the first U-shaped mounting plate 3 and the top surface of the plunger of the hydraulic jack 11 are kept in contact;

[0068] 5) Carry out foundation pit excavation and support structure construction. When monitoring finds that the lattice column has settled and deformed, use the servo oil pump to inject hydraulic oil into the hydraulic jack 11 to compensate for the settlement and deformation. The plunger stroke of the hydraulic jack 11 is measured in real time according to the pull-wire displacement sensor 13 to ensure that the plunger stroke of the hydraulic jack 11 is consistent with the settlement and deformation of the lattice column;

[0069] 6) After the construction is completed, dismantle the foundation pit lattice column settlement deformation compensation device in the reverse order of the above steps, and recycle all components for reuse.

[0070] It should be emphasized that the heights of the above-mentioned first lattice column body and the second lattice column body can be the same or different, and can be specifically adjusted according to the on-site construction requirements. The lattice column settlement deformation compensation structure of the present invention is mainly used to compensate for the settlement deformation of the first lattice column body and the structures above it. Therefore, during on-site construction, the multi-layer horizontal internal support cooperating with the lattice column is actually connected to the first lattice column body. Through the settlement deformation compensation structure, the settlement deformation of the first lattice column body, the multi-layer internal support structure connected to it, and the building structure above the lattice column can be simultaneously compensated, effectively solving the defect in the traditional solution that only the building structure above the lattice column can be compensated, thereby ensuring the safety of the support structure and the foundation pit construction safety.

[0071] According to the above solution of the present invention, a jacking structure is provided inside the deformation compensation device of the present invention, which can timely adjust the length of the lattice column according to the settlement deformation of the lattice column during the foundation pit construction, and avoid the damage of the internal support members and the failure of the support system caused by the settlement deformation of the lattice column.

[0072] According to the above solution of the present invention, the present invention can keep the top elevation of the lattice column unchanged, ensure the support strength and stability of the internal support members in the foundation pit, and avoid the problem of support failure. At the same time, through the assembled installation and disassembly of the foundation pit lattice column settlement deformation compensation device, the efficient reuse of components can be realized to solve the actual needs in the field of foundation pit engineering.

[0073] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. Foundation pit lattice column settlement deformation compensation device, characterized in that, Comprising: Lattice columns, lattice column settlement deformation compensation structures, and settlement deformation compensation stroke measurement structures; The lattice column includes a first lattice column body and a second lattice column body, and the first lattice column body is detachably supported on the top of the second lattice column body; The lattice column settlement deformation compensation structure and the settlement deformation compensation stroke measurement structure are symmetrically supported between the first lattice column body and the second lattice column body; When the foundation pit is excavated and the internal support member is supported through the top of the first lattice column body, when it is monitored that the lattice column undergoes settlement deformation, the lattice column settlement deformation compensation structure is used to compensate for the settlement deformation of the lattice column, and then the compensation stroke of the lattice column settlement deformation compensation structure is measured through the settlement deformation compensation stroke measurement structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed; The first lattice column body includes: a first lattice column support and a first adapter; The first lattice column support includes 4 circumferentially arranged first lattice column angle steels and a number of first lacing plates forming a multi-layer circumferential connection structure, and each layer of the circumferential connection structure is welded at intervals on the outer walls of the first lattice column angle steels; The first adapter is installed at the bottom end of the first lattice column support and is detachably connected to the second lattice column body through the first adapter; The first adapter includes: a first U-shaped mounting plate and two U-shaped steels; The side wall of the first U-shaped mounting plate is installed on the bottom side wall of the first lattice column support through fixing bolts; The two U-shaped steels are symmetrically supported horizontally at the center of the bottom of the first U-shaped mounting plate.

2. The compensation device for the settlement and deformation of the lattice column in the foundation pit according to claim 1, wherein The second lattice column body includes: a second lattice column support and a second adapter; The second lattice column support includes 4 circumferentially arranged second lattice column angle steels and a number of second lacing plates forming a multi-layer circumferential connection structure, and each layer of the circumferential connection structure is welded at intervals on the outer walls of the second lattice column angle steels; The second adapter is installed at the top end of the second lattice column support and is cooperatively connected to the first adapter through the second adapter; 3. The settlement deformation compensation device for the lattice column of the foundation pit according to claim 2, characterized in that, The second adapter includes: a second U-shaped mounting plate; The side wall of the second U-shaped mounting plate is installed on the top side wall of the second lattice column support through fixing bolts; A transfer hole is provided at the center of the second U-shaped mounting plate. After the two U-shaped steels pass through the transfer hole, the first lattice column body is rotated 90 degrees, and the first lattice column body and the second lattice column body are supported by the lattice column settlement deformation compensation structure to realize the detachable connection between the first lattice column body and the second lattice column body.

4. The settlement and deformation compensation device for the lattice column of the foundation pit according to claim 3, characterized in that, The lattice column settlement deformation compensation structure includes a plurality of hydraulic jacks and a plurality of oil pipes; The bottom ends of the hydraulic jacks are symmetrically supported on the top surface of the second U-shaped mounting plate and are located on both sides of the transfer hole, and the top ends are supported on the bottom surface of the first U-shaped mounting plate; Each of the oil pipes is cooperatively connected to each of the hydraulic jacks and is used to convey hydraulic oil to each of the hydraulic jacks to support and compensate for the settlement deformation of the first lattice column body and the second lattice column body through each of the hydraulic jacks.

5. The compensation device for the settlement and deformation of the lattice column in the foundation pit according to claim 4, characterized in that, The settlement deformation compensation stroke measurement structure comprises: a wire-drawing displacement sensor and a wire-drawing fixing ring; The wire-type displacement sensor is symmetrically mounted on the bottom surface of the first U-shaped mounting plate and is located on both sides of the U-shaped steel; The wire fixing ring is symmetrically mounted on the top surface of the second U-shaped mounting plate and is located on both sides of the adapter hole; The pull wires of the pull wire type displacement sensors are respectively fixed on the pull wire fixing rings; The compensation stroke of the lattice column settlement deformation compensation structure is measured by the wire-type displacement sensor.

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