Foundation pit latticed column settlement deformation compensation device

Abstract

The invention relates to a foundation pit latticed column settlement deformation compensation device which comprises a latticed column, a latticed column settlement deformation compensation structure and a settlement deformation compensation stroke measurement structure. The latticed column comprises a first latticed column body and a second latticed 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 a foundation pit is excavated and an inner supporting component is supported through the top of a first latticed column body, and settlement deformation of the latticed column is monitored, the settlement deformation of the latticed column is compensated through a latticed column settlement deformation compensation structure; and then the compensation stroke of the lattice column settlement deformation compensation structure is measured through the settlement deformation compensation stroke measurement structure, and when the compensation stroke is the same as the settlement deformation, compensation is completed. Damage of the inner supporting component and failure of a supporting system caused by settlement deformation of the latticed column can be avoided.

Description

Technical Field

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

[0002] In foundation pit projects, lattice columns are often used to support the deadweight and construction loads of internal support components arranged in the horizontal direction. At present, traditional foundation pit lattice columns are welded from angle steel and rectangular tie plates, and their length remains fixed after processing. However, with the increase in the excavation depth of the foundation pit and the layered construction of the internal support system, the settlement deformation of the lattice column continues to accumulate, resulting in significant deformation of the connection nodes between the lattice column and the internal support component, and even causing damage to the internal support component and failure of the support system. The settlement deformation of the lattice column seriously threatens the safety of the support structure and the foundation pit construction safety.

[0003] The traditional solution is usually to set up a compensation structure on the top of the lattice column and support the building above through the compensation structure. This method makes it possible for the compensation structure to only compensate for the settlement deformation of the building structure above the top of the lattice column when the lattice column is compressed and sinks, but it is impossible to compensate for the settlement deformation of the lattice column and the multi-layer horizontal internal supports connected to the lattice column. This will cause the settlement deformation of the above-mentioned lattice column to continue to accumulate and the deformation and damage of related structures, affecting the safety of the support structure and the safety of foundation pit construction. Summary of the invention

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

[0005] To achieve the above-mentioned object, the present invention provides a foundation pit lattice column settlement deformation compensation device, comprising: a lattice column, a lattice column settlement deformation compensation structure and a settlement deformation compensation stroke measurement structure; The lattice column comprises a first lattice column and a second lattice column, wherein the first lattice column is detachably supported on the top of the second lattice column; The lattice column settlement deformation compensation structure and the settlement deformation compensation stroke measurement structure are supported between the first lattice column and the second lattice column in a symmetrical manner; When the foundation pit is excavated and the internal supporting member is supported by the top of the first lattice column, when settlement deformation of the lattice column is monitored, the settlement deformation of the lattice column is compensated by 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 measuring structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed.

[0006] According to one aspect of the present invention, the first lattice column comprises: a first lattice column support body and a first transition body; The first lattice column support body comprises four first lattice column angle steels arranged in an annular direction and a plurality of first tie plates forming a multi-layer annular connection structure, wherein each layer of the annular connection structure is welded at intervals on the outer wall of each of the first lattice column angle steels; 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 through the first adapter.

[0007] According to one aspect of the present invention, the first adapter body comprises: a first U-shaped mounting plate, a U-shaped steel; The side wall of the first U-shaped mounting plate is mounted on the bottom side wall of the first lattice column support body by fixing bolts; The two U-shaped steels are laterally symmetrically supported at the center of the bottom of the first U-shaped mounting plate.

[0008] According to one aspect of the present invention, the second lattice column comprises: a second lattice column support body and a second transition body; The second lattice column support body comprises four circumferentially arranged second lattice column angle steels and a plurality of second tie plates forming a multi-layer circumferential connection structure, wherein each layer of the circumferential connection structure is welded at intervals on the outer wall of each of the second lattice column angle steels; The second adapter is installed on the top end of the second lattice column support body, and is connected with the first adapter through the second adapter.

[0009] According to one aspect of the present invention, the second adapter body comprises: a second U-shaped mounting plate; The side wall of the second U-shaped mounting plate is mounted on the top side wall of the second lattice column support body by fixing bolts; 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 is rotated 90 degrees. The first lattice column and the second lattice column are supported by the lattice column settlement deformation compensation structure, thereby realizing a detachable connection between the first lattice column and the second lattice column.

[0010] 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; The bottom end of each of the hydraulic jacks is symmetrically supported on the top surface of the second U-shaped mounting plate and is located on both sides of the adapter hole, and the top end is supported on the bottom surface of the first U-shaped mounting plate; Each of the oil pipes is cooperatively connected with each of the oil hydraulic jacks for conveying hydraulic oil to each of the oil hydraulic jacks, so as to support and compensate for the settlement deformation of the first lattice column and the second lattice column through each of the oil hydraulic jacks.

[0011] According to one aspect of the present invention, 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.

[0012] According to the solution of the present invention, the heights of the first lattice column and the second lattice column can be the same or different, and can be adjusted specifically according to the needs of on-site construction. The present invention is mainly used to compensate for the settlement deformation of the first lattice column and the structures above it through the lattice column settlement deformation compensation structure. Therefore, during on-site construction, the multi-layer horizontal internal support matched with the lattice column is actually connected to the first lattice column. The settlement deformation compensation structure can be used to compensate for the settlement deformation of the first lattice column and the multi-layer internal support structure matched with it and the building structure above the lattice column at the same time, thereby effectively solving the defect that only the building structure above the lattice column can be supplemented in the traditional solution, thereby ensuring the safety of the support structure and the foundation pit construction.

[0013] According to the solution of the present invention, a jacking structure is provided inside the deformation compensation device provided by the present invention, which can adjust the length of the lattice column in time according to the settlement deformation of the lattice column during foundation pit construction, so as to avoid the damage of the internal supporting components and the failure of the support system caused by the settlement deformation of the lattice column.

[0014] According to the solution of the present invention, the present invention can keep the top elevation of the lattice column unchanged, ensure the supporting strength and stability of the supporting components in the foundation pit, avoid the problem of support failure, and at the same time, through the assembly installation and disassembly of the foundation pit lattice column settlement deformation compensation device, the efficient reuse of components can be achieved to solve the actual needs in the foundation pit engineering field.

[0015] According to the solution of the present invention, the present invention arranges the lattice column settlement deformation compensation structure in the lattice column so that the overall supporting strength of the lattice column remains unchanged, and the supporting capacity of the supporting components in the foundation pit will not decrease, and when deformation and settlement occur, compensation can be made by changing the length of the lattice column itself. This method effectively ensures the supporting strength of the lattice column itself, and at the same time effectively avoids the problem that arranging the compensation structure at the top supporting position of the lattice column easily leads to damage and failure of the compensation structure, thereby further causing damage to the internal supporting components and failure of the support system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereoscopic diagram schematically showing a foundation pit lattice column settlement deformation compensation device according to an embodiment of the present invention; Figure 2 A perspective view schematically showing a first adapter according to an embodiment of the present invention; Figure 3 Schematically showing a front view of a second lattice column according to an embodiment of the present invention; Figure 4 A schematic top view of a second lattice column according to one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0017] The content of the present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the content of the present invention, rather than implying any limitation on the scope of the present invention.

[0018] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0019] Figure 1 A schematic perspective view of a foundation pit lattice column settlement deformation compensation device according to an embodiment of the present invention is shown. Figure 1 As 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; The lattice column comprises a first lattice column body and a second lattice column body, wherein 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 supported between the first lattice column and the second lattice column in a symmetrical manner; When the foundation pit is excavated and the inner supporting member is supported by the top of the first lattice column, when settlement deformation of the lattice column is monitored, the settlement deformation of the lattice column is compensated by 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 measuring structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed.

[0020] Further, Figure 2 A perspective view schematically shows a first adapter according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, in this embodiment, the first lattice column includes: a first lattice column support body and a first adapter body; The first lattice column support body comprises four first lattice column angle steels 1 arranged in an annular direction and a plurality of first tie plates 2 forming a multi-layer annular connection structure, wherein each layer of the annular connection structure is welded at intervals on the outer wall of each first lattice column angle steel 1; 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 through the first adapter.

[0021] Furthermore, if Figure 2 As shown, in this embodiment, the first adapter body includes: a first U-shaped mounting plate 3, a U-shaped steel 4; The side wall of the first U-shaped mounting plate 3 is mounted on the bottom side wall of the first lattice column support body by means of fixing bolts 5; Two U-shaped steels 4 are laterally symmetrically supported at the bottom center 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 walls of the adapter hole 10 described below.

[0022] Further, Figure 3 Schematically shows a front view of a second lattice column according to an embodiment of the present invention. Figure 1 and Figure 3 As shown, in this embodiment, the second lattice column includes: a second lattice column support body and a second adapter body; The second lattice column support body comprises four circumferentially arranged second lattice column angle steels 7 and a plurality of second tie plates 8 forming a multi-layer circumferential connection structure, wherein each layer of the circumferential connection structure is welded at intervals on the outer wall of each second lattice column angle steel 7; The second adapter is installed on the top end of the second lattice column support body and is matched and connected with the first adapter through the second adapter.

[0023] Further, Figure 4 Schematically shows a top view of a second lattice column according to an embodiment of the present invention. Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the second adapter body includes: a second U-shaped mounting plate 9; The side wall of the second U-shaped mounting plate 9 is mounted on the top side wall of the second lattice column support body by means of fixing bolts 5; A rectangular adapter hole 10 is provided in the center of the second U-shaped mounting plate 9. After the U-shaped steel 4 passes through the adapter hole, the first lattice column is rotated 90 degrees, and the first lattice column and the second lattice column are supported by the lattice column settlement deformation compensation structure, thereby realizing a detachable connection between the first lattice column and the second lattice column.

[0024] Furthermore, if Figure 1 , Figure 3 and Figure 4As 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; 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 adapter hole 10, and the top ends are supported on the bottom surface of the first U-shaped mounting plate 3; Each oil pipe 12 is cooperatively connected with each hydraulic jack 11 for conveying hydraulic oil to each hydraulic jack, so as to support and compensate for the settlement deformation of the first lattice column and the second lattice column through each hydraulic jack.

[0025] Furthermore, if Figure 1-Figure 4 As shown, in this embodiment, the settlement deformation compensation stroke measurement structure includes: a wire-drawing displacement sensor 13 and a wire-drawing fixing ring 14; The wire-type displacement sensor 13 is symmetrically mounted on the bottom surface of the first U-shaped mounting plate 3 and is located on both sides of the U-shaped steel 4; The wire fixing ring 14 is symmetrically mounted on the top surface of the second U-shaped mounting plate 9 and is located on both sides of the transfer hole 10; The pull wires of each pull wire type displacement sensor are fixed on each pull wire fixing ring respectively; The compensation stroke of the lattice column settlement deformation compensation structure is measured by a wire-type displacement sensor.

[0026] 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: 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; 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; 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; 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; 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; 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.

[0027] It should be emphasized that the heights of the first lattice column and the second lattice column can be the same or different, and can be adjusted according to the on-site construction requirements. The present invention is mainly used to compensate for the settlement deformation of the first lattice column and the above structures through the lattice column settlement deformation compensation structure. Therefore, during on-site construction, the multi-layer horizontal internal support matched with the lattice column is actually connected to the first lattice column. The settlement deformation compensation structure can be used to compensate for the settlement deformation of the first lattice column and the multi-layer internal support structure connected thereto and the building structure above the lattice column at the same time, effectively solving the defect that only the building structure above the lattice column can be supplemented in the traditional solution, thereby ensuring the safety of the support structure and the foundation pit construction.

[0028] According to the above scheme of the present invention, a jacking structure is provided inside the deformation compensation device provided by 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, so as to avoid the damage of the internal supporting components and the failure of the support system caused by the settlement deformation of the lattice column.

[0029] According to the above scheme of the present invention, the present invention can keep the top elevation of the lattice column unchanged, ensure the supporting strength and stability of the supporting components in the foundation pit, avoid the problem of support failure, and at the same time, through the assembly installation and disassembly of the foundation pit lattice column settlement deformation compensation device, the efficient reuse of components can be achieved to solve the actual needs in the foundation pit engineering field.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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. The foundation pit lattice column settlement deformation compensation device is characterized by: include: Lattice columns, lattice column settlement deformation compensation structures and settlement deformation compensation stroke measurement structures; The lattice column comprises a first lattice column and a second lattice column, wherein the first lattice column is detachably supported on the top of the second lattice column; The lattice column settlement deformation compensation structure and the settlement deformation compensation stroke measurement structure are supported between the first lattice column and the second lattice column in a symmetrical manner; When the foundation pit is excavated and the internal supporting member is supported by the top of the first lattice column, when settlement deformation of the lattice column is monitored, the settlement deformation of the lattice column is compensated by 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 measuring structure. When the compensation stroke is the same as the settlement deformation amount, the compensation is completed.

2. The foundation pit lattice column settlement deformation compensation device according to claim 1 is characterized in that: The first lattice column comprises: a first lattice column support body and a first adapter body; The first lattice column support body comprises four first lattice column angle steels arranged in an annular direction and a plurality of first tie plates forming a multi-layer annular connection structure, wherein each layer of the annular connection structure is welded at intervals on the outer wall of each of the first lattice column angle steels; 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 through the first adapter.

3. The foundation pit lattice column settlement deformation compensation device according to claim 2 is characterized in that: The first adapter body comprises: a first U-shaped mounting plate and two U-shaped steels; The side wall of the first U-shaped mounting plate is mounted on the bottom side wall of the first lattice column support body by fixing bolts; The two U-shaped steels are laterally symmetrically supported at the center of the bottom of the first U-shaped mounting plate.

4. The foundation pit lattice column settlement deformation compensation device according to claim 3 is characterized in that: The second lattice column comprises: a second lattice column support body and a second adapter body; The second lattice column support body comprises four circumferentially arranged second lattice column angle steels and a plurality of second tie plates forming a multi-layer circumferential connection structure, wherein each layer of the circumferential connection structure is welded at intervals on the outer wall of each of the second lattice column angle steels; The second adapter is installed on the top end of the second lattice column support body, and is connected with the first adapter through the second adapter.

5. The foundation pit lattice column settlement deformation compensation device according to claim 4 is characterized in that: The second adapter body includes: a second U-shaped mounting plate; The side wall of the second U-shaped mounting plate is mounted on the top side wall of the second lattice column support body by fixing bolts; A transfer hole is provided in the center of the second U-shaped mounting plate. After the two U-shaped steels pass through the transfer hole, the first lattice column is rotated 90 degrees. The first lattice column and the second lattice column are supported by the lattice column settlement deformation compensation structure, thereby realizing a detachable connection between the first lattice column and the second lattice column.

6. The foundation pit lattice column settlement deformation compensation device according to claim 5, characterized in that: The lattice column settlement deformation compensation structure includes a plurality of hydraulic jacks and a plurality of oil pipes; The bottom end of each of the hydraulic jacks is symmetrically supported on the top surface of the second U-shaped mounting plate and is located on both sides of the adapter hole, and the top end is supported on the bottom surface of the first U-shaped mounting plate; Each of the oil pipes is cooperatively connected with each of the oil hydraulic jacks for conveying hydraulic oil to each of the oil hydraulic jacks, so as to support and compensate for the settlement deformation of the first lattice column and the second lattice column through each of the oil hydraulic jacks.

7. The foundation pit lattice column settlement deformation compensation device according to claim 6, 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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