Deep foundation pit reinforcing and supporting device and construction technology

Abstract

The invention provides a deep foundation pit reinforcing and supporting device and a construction technology, and relates to the technical field of foundation pit engineering. The side protection structure comprises a side protection, a central column and a supporting assembly, and the side protection is arranged on the side wall of the deep foundation pit; the central column is inserted into the deep foundation pit; one side of the supporting assembly is detachably connected with the center column, and the other side of the supporting assembly abuts against the edge protection and clamps the edge protection between the supporting assembly and the side wall of the deep foundation pit. The device has the effects of being capable of being quickly disassembled and repeatedly used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit engineering, in particular to a deep foundation pit reinforcing and supporting device and a construction process. BACKGROUND

[0002] The deep foundation pit reinforcing and supporting device refers to a supporting, reinforcing and protecting device installed on the side wall of a deep foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment.

[0003] The existing deep foundation pit reinforcing and supporting device generally comprises a side protection plate and an inner support. Between two deep foundation pits, workers first draw a deep foundation pit edge line on the ground where the deep foundation pit is to be excavated, then use a pile driver or other equipment to drive the side protection plate into the ground along the edge line to form a circle, and then use an excavator or other equipment to excavate a deep foundation pit inside the circle of side protection plates, and then install the inner support inside the deep foundation pit and weld it to different side protection plates, so that the different side protection plates can form a whole through the inner support and support the walls of the entire deep foundation pit.

[0004] However, when the construction in the deep foundation pit is completed and the deep foundation pit reinforcing and supporting device needs to be removed from the deep foundation pit, the workers must first cut off all the side protection plates from the inner support, and then hoist the inner support and the side protection plates out of the deep foundation pit, which not only makes the disassembly process of the deep foundation pit reinforcing and supporting device more troublesome, but also makes the deep foundation pit reinforcing and supporting device unable to be reused because the inner support and the side protection plates cannot be repeatedly welded.

[0005] Therefore, it is necessary to provide a deep foundation pit reinforcing and supporting device and a construction process. SUMMARY

[0006] To solve the problem that the disassembly process of the existing deep foundation pit reinforcing and supporting device is more troublesome and cannot be reused, the present application provides a deep foundation pit reinforcing and supporting device and a construction process.

[0007] In a first aspect, the present application provides a deep foundation pit reinforcing and supporting device, which adopts the following technical solution: comprising a side protection plate, a center column and a support assembly, the side protection plate is arranged on the side wall of the deep foundation pit; The center column is inserted into the inside of the deep foundation pit; One side of the support assembly is detachably connected with the center column, and the other side of the support assembly abuts against the side protection plate and clamps the side protection plate between the support assembly and the side wall of the deep foundation pit.

[0008] By adopting the technical scheme, after the edge line of the deep foundation pit is drawn on the ground where the foundation pit is to be excavated, the workers can first drive the edge protection into the ground along the edge line, then drive the center column into the ground from the center of the edge line, then remove the soil between the center column and the edge protection to form the deep foundation pit, then install the support assembly between the center column and the edge protection and clamp the edge protection between the support assembly and the sidewall of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can support the sidewall of the deep foundation pit; after the construction inside the deep foundation pit is completed, the workers can first remove the support assembly from between the center column and the edge protection, and then use the crane to lift the center column and each sub-plate out of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can be quickly removed and reused.

[0009] Specifically, the support assembly comprises a telescopic column and at least two support columns, the inner sidewall of the edge protection is provided with a sliding rail in the circumferential direction of the edge protection, the edge protection comprises a plurality of sub-plates, the sub-plates correspond to the support columns one by one, one end of the telescopic column is rotatably connected to the column body of the center column, the other end of the telescopic column is slidably connected to the sliding rail, one end of each of the support columns is detachably connected to the center column, and the end of the telescopic column away from the center column can move away from the center column and abut any of the sub-plates away from the center column, so that the sub-plate abuts the corresponding support column between the sub-plate and the center column.

[0010] By adopting the technical scheme, the workers can first abut any of the sub-plates away from the center column by using the telescopic column, and then abut the support column between the sub-plate and the center column, so that the telescopic column can be used to install the support column between each sub-plate and the center column, and the support column can support each sub-plate.

[0011] Further, the telescopic column comprises a cylinder sleeve ring and a telescopic cylinder, the cylinder sleeve ring is sleeved on the center column, the cylinder body of the telescopic cylinder is connected to the cylinder sleeve ring, and the piston rod of the telescopic cylinder is connected to the sliding rail, and when the telescopic cylinder rotates around the center column, the piston rod of the telescopic cylinder can slide along the sliding rail.

[0012] By adopting the technical scheme, the cylinder body of the telescopic cylinder can be rotatably connected to the telescopic column through the cylinder sleeve ring, and the piston rod of the telescopic cylinder can slide along the sliding rail.

[0013] Further, the end of the piston rod of the telescopic cylinder is provided with a ball, the sliding rail is formed with a track groove in the length direction of the sliding rail, and the ball is inserted into the track groove and can slide along the track groove.

[0014] By adopting the above technical scheme, the setting of the ball and the track groove enables the piston rod of the telescopic cylinder to abut against the groove wall on the side of the track groove away from the center column while sliding along the track groove, so that the telescopic cylinder can abut against the entire split plate away from the rotating rod along the track groove.

[0015] Further, the support column comprises an abutting ring, a sand cylinder and an abutting rod, the abutting ring is sleeved on the center column and located above the cylinder sleeve ring, one end of the sand cylinder is connected with the abutting ring, the cylinder mouth of the sand cylinder is located at the other end of the sand cylinder, one end of the abutting rod can abut against the corresponding split plate, the other end of the abutting rod passes through the cylinder mouth of the sand cylinder and is inserted into the sand cylinder to abut against the inner wall of the sand cylinder, and a containing cavity is formed between the abutting rod and the inner wall of the sand cylinder, and a sand hole opening into the containing cavity is formed in the side wall of the sand cylinder.

[0016] By adopting the above technical scheme, after the telescopic column abuts against the split plate on the side wall of the deep foundation pit, the worker can first abut against the abutting rod of the support column corresponding to the split plate, then fill the sand into the containing cavity from the sand hole, and shorten the length of the telescopic column after closing the sand hole, so that the support column can continue to form support between the split plate and the center column instead of the telescopic column.

[0017] Further, the support column further comprises a protection plate, one side surface of the protection plate is connected with the end of the abutting rod away from the sand cylinder, the other side surface of the protection plate can abut against the corresponding split plate, and a reinforcing rib is further arranged between the protection plate and the abutting rod.

[0018] By adopting the above technical scheme, the setting of the protection plate can reduce the pressure between the support column and the split plate, so that the split plate is not easy to be damaged by the support column due to excessive pressure; and the setting of the reinforcing rib can strengthen the connection between the protection plate and the abutting rod.

[0019] Further, the slide rail is formed in a spiral shape along the sidewall of the deep foundation pit, the center column comprises a ground anchor, a rotating rod and a driving device, the bottom end of the ground anchor is inserted into the bottom wall of the deep foundation pit, the top end of the ground anchor is provided with a rotating groove, a thrust ball bearing is arranged in the rotating groove, the bottom end of the rotating rod is inserted into the rotating groove and abuts against the thrust ball bearing, a clamping groove is formed on the rod body of the rotating rod, the top end of the clamping groove extends to the top of the rotating rod and forms an opening, and the bottom end of the clamping groove is not higher than the bottom end of the slide rail, the cylinder sleeve ring and the abutting ring can be sleeved on the rotating rod, a clamping block is arranged on the inner ring of the cylinder sleeve ring, the clamping block can be inserted into the clamping groove and abut against the inner wall of the clamping groove, so as to limit the rotation of the cylinder sleeve ring around the rotating rod, and the driving device is in transmission connection with the rotating rod and can drive the rotating rod to rotate in the rotating groove, so that the rotating rod drives the telescopic column to rotate through rotation.

[0020] By adopting the above technical scheme, after the soil between the rotating rod and the side protection is removed to form a deep foundation pit, the worker can first sleeve the cylinder sleeve ring on the rotating rod and insert the clamping block into the clamping groove, so that the rotating rod can drive the telescopic column to rotate through rotation, then control the driving device to drive the rotating rod to rotate and drive the telescopic cylinder to rotate and descend along the slide rail around the rotating rod, in the descending process, whenever the telescopic cylinder rotates to the position abutting against a piece of partition plate, the driving device is controlled to drive the rotating rod to stop rotating, the piston rod of the telescopic cylinder is controlled to move away from the rotating rod and keep the partition plate away from the rotating rod by a certain distance, then the abutting rod of the support column corresponding to the partition plate is abutted against the partition plate and fills the sand into the accommodation cavity from the sand hole, then the sand hole is closed and the piston rod of the telescopic cylinder is controlled to move close to the rotating rod by a certain distance, finally the driving device is controlled to drive the rotating rod to continue to rotate until the telescopic cylinder rotates to the position abutting against the next piece of partition plate; by repeating the above process until the rotating rod and all the partition plates are abutted against the support columns, and the plurality of support columns are arranged in multiple layers in the vertical direction, the installation of the support columns between each partition plate and the center column can be realized; after the construction in the deep foundation pit is completed, the worker can first open the sand hole of each sand cylinder to discharge the sand in the accommodation cavity, then control the driving device to drive the rotating rod to rotate and drive the telescopic cylinder and each support column to ascend along the rotating rod, then disassemble each telescopic column and support column from the rotating rod at the top of the rotating rod, and finally use a crane to lift the center column and each partition plate out of the deep foundation pit, so that the quick disassembly of the deep foundation pit reinforcing and supporting device can be completed.

[0021] Further, the support assembly further comprises a plurality of scaffolds, the plurality of support columns are arranged in multiple layers in the vertical direction, the plurality of support columns and the plurality of scaffolds correspond one by one, the top of each of the plurality of scaffolds is detachably connected with the column body of the corresponding layer of the plurality of support columns, the bottom of the lowest one of the plurality of scaffolds abuts against the bottom of the deep foundation, and the bottom of each of the remaining plurality of scaffolds is detachably connected with the support column of the adjacent layer.

[0022] By adopting the technical scheme, workers can lay the scaffolds between the support columns of different layers to form a scaffold, and then enter or exit the deep foundation through the scaffold.

[0023] Further, the top and the bottom of each of the plurality of scaffolds are connected with an abutment plate, the abutment plate is provided with a plurality of clearance holes, the top of each of the plurality of sand cylinders is provided with a plurality of connecting screw holes, the plurality of clearance holes and the plurality of connecting screw holes correspond one by one, and each of the plurality of abutment plates can be connected with the corresponding sand cylinder through the abutment plate by screwing a bolt through the clearance hole of the abutment plate and the connecting screw hole.

[0024] By adopting the technical scheme, the scaffold can be connected with the corresponding sand cylinder by screwing a bolt through the clearance hole of the abutment plate and the connecting screw hole.

[0025] The second aspect of the present application provides a deep foundation reinforcement and support construction process, which adopts the following technical scheme: S1, first, a circular edge line is drawn on the ground, then a plurality of sub-boards are driven into the ground along the edge line and the edges of two adjacent sub-boards are attached to each other to form a circle of edge protection, then a center column is driven into the ground from the center of the edge line, and finally the soil between the rotating rod and the edge protection is removed to form a deep foundation; S2, first, a cylinder sleeve ring is sleeved on the rotating rod and the clamping block is inserted into the clamping groove, then the piston rod of the telescopic cylinder is driven to elongate and connected with the slide rail, then each abutment ring is sleeved on the rotating rod, then the driving device is controlled to drive the rotating rod to rotate and drive the telescopic cylinder to rotate and descend along the slide rail around the rotating rod, and in the process of rotating and descending of the telescopic cylinder: S21, when the telescopic cylinder rotates to the position abutting against a sub-board, the driving device is first controlled to drive the rotating rod to stop rotating, then the piston rod of the telescopic cylinder is controlled to move away from the rotating rod by a certain distance, then the abutment rod of the support column corresponding to the sub-board is made to abut against the sub-board and fill the sand into the accommodating cavity from the sand hole, then the sand hole is closed and the piston rod of the telescopic cylinder is controlled to move close to the rotating rod by a certain distance, and finally the driving device is controlled to drive the rotating rod to continue rotating until the telescopic cylinder rotates to the position abutting against the next sub-board; S22, repeat S21 until the rotating rod and all the support columns abut against each other, and arrange the plurality of support columns in multiple layers in the vertical direction; S3, first install scaffolding between the support columns in each layer from top to bottom to form a scaffold, and then enter the deep foundation pit to perform construction along the scaffold; S4, after the construction in the deep foundation pit is completed, first remove the scaffolding between the support columns in each layer, then open the sand holes of the sand cylinders to discharge the sand in the accommodation cavities, then control the driving device to drive the rotating rod to rotate, and drive the telescopic cylinders and the support columns to ascend along the rotating rod, then remove the telescopic cylinders and the support columns from the rotating rod at the top of the rotating rod, and finally use a crane to lift the center column and each of the split plates out of the deep foundation pit.

[0026] By adopting the above technical solutions, the support columns between the center column and each of the split plates can be quickly installed, and the deep foundation pit reinforcing and supporting device can be quickly removed after the construction in the deep foundation pit is completed, so that the deep foundation pit reinforcing and supporting device can be conveniently reused.

[0027] In summary, the present application has at least one of the following beneficial technical effects: 1. The deep foundation pit reinforcing and supporting device comprises a side support, a center column, and a support assembly. The side support is arranged on the side wall of the deep foundation pit. The center column is inserted into the interior of the deep foundation pit. One side of the support assembly is detachably connected to the center column. The other side of the support assembly abuts against the side support and clamps the side support between the support assembly and the side wall of the deep foundation pit. After the edge line of the deep foundation pit is circled on the ground where the deep foundation pit is to be excavated, workers can first drive the side support into the ground along the edge line, then drive the center column into the ground from the center of the edge line, and then remove the soil between the center column and the side support to form the deep foundation pit. Then the support assembly is installed between the center column and the side support and clamps the side support between the support assembly and the side wall of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can support the side wall of the deep foundation pit. After the construction in the deep foundation pit is completed, workers can first remove the support assembly from between the center column and the side support, and then use a crane to lift the center column and each of the split plates out of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can be quickly removed and reused. 2. The spiral-shaped slide rails are formed along the sidewalls of the deep foundation pit, the central column comprises a ground anchor, a rotating rod and a driving device, the bottom end of the ground anchor is inserted into the bottom wall of the deep foundation pit, the top end of the ground anchor is provided with a rotating groove, a thrust ball bearing is arranged in the rotating groove, the bottom end of the rotating rod is inserted into the rotating groove and abuts against the thrust ball bearing, a clamping groove is formed on the rod body of the rotating rod, the top end of the clamping groove extends to the top of the rotating rod and forms an opening, and the bottom end of the clamping groove is not higher than the bottom end of the slide rail, the cylinder sleeve ring and the abutting ring can be sleeved on the rotating rod, a clamping block is arranged on the inner ring of the cylinder sleeve ring, the clamping block can be inserted into the clamping groove and abut against the inner wall of the clamping groove, so as to limit the rotation of the cylinder sleeve ring around the rotating rod, the driving device is in transmission connection with the rotating rod and can drive the rotating rod to rotate in the rotating groove, so that the rotating rod drives the telescopic column to rotate through rotation, when the telescopic column rotates around the rotating rod, the piston rod of the telescopic cylinder can ascend along the slide rail and drive each support column to ascend, or descend along the slide rail and enable each support column to slide down along the rotating rod, so that after the soil between the rotating rod and the side protection is removed to form the deep foundation pit, the worker can first sleeve the cylinder sleeve ring on the rotating rod and insert the clamping block into the clamping groove, so that the rotating rod can drive the telescopic column to rotate through rotation, then the driving device is controlled to drive the rotating rod to rotate and drive the telescopic cylinder to rotate and descend around the rotating rod along the slide rail, in the descending process, whenever the telescopic cylinder rotates to the position abutting against a piece of partition plate, the driving device is first controlled to drive the rotating rod to stop rotating, then the piston rod of the telescopic cylinder is controlled to move away from the rotating rod and abut against the partition plate at a distance, then the abutting rod of the support column corresponding to the partition plate is made to abut against the partition plate and fill the sand into the accommodation cavity from the sand hole, then the sand hole is closed and the piston rod of the telescopic cylinder is controlled to move close to the rotating rod at a distance, finally the driving device is controlled to drive the rotating rod to continue rotating until the telescopic cylinder rotates to the position abutting against the next piece of partition plate; through repeating the above process until the rotating rod and all the partition plates are abutted against the support columns, and the plurality of support columns are arranged in multiple layers in the vertical direction, the installation of the support columns between each partition plate and the central column can be realized; after the construction in the deep foundation pit is completed, the worker can first open the sand holes of the sand cylinders to discharge the sand in the accommodation cavities, then the driving device is controlled to drive the rotating rod to rotate and drive the telescopic cylinder and each support column to ascend along the rotating rod, then each telescopic column and support column is detached from the rotating rod at the top of the rotating rod, finally the central column and each partition plate are hoisted out of the deep foundation pit by a crane, so that the quick disassembly of the deep foundation pit reinforcing and supporting device can be completed. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view of a deep foundation pit reinforcing and supporting device of the present application; Figure 2 is a top view of a deep foundation pit reinforcing and supporting device of the present application; Figure 3 is a schematic sectional view taken along the direction A-A in Figure 2 ​ Figure 4 is Figure 3 is an enlarged view of the B region in FIG. 6, showing the telescopic column.

[0029] Reference signs: 1, side protection; 11, sub-plate; 12, sliding rail; 121, guide groove; 2, center column; 21, ground anchor; 22, rotating rod; 221, clamping groove; 23, driving device; 24, thrust ball bearing; 3, support assembly; 31, telescopic column; 311, cylinder sleeve ring; 312, telescopic cylinder; 3121, ball; 32, support column; 321, abutting ring; 3211, abutting bolt; 3212, rotating bearing; 322, sand cylinder; 3221, sand passage; 323, abutting rod; 324, protection plate; 3241, reinforcing rib; 33, scaffold board; 331, abutting plate; 332, scaffold board bolt. DETAILED DESCRIPTION

[0030] The above description is further illustrated by the following Figures 1-4 further description: Referring to Figure 1 and Figure 2 , a deep foundation pit reinforcing and supporting device for reinforcing a cylindrical deep foundation pit dug on the ground, comprising a side protection 1, a center column 2 and a support assembly 3, the side protection 1 comprises four sub-plates 11, each sub-plate 11 has a quarter of a circular arc shape in the horizontal direction, and the four sub-plates 11 can be spliced together to form a cylindrical sleeve, and a spiral track groove is formed on the inner wall of the sleeve, so that after the edge line of the circular deep foundation pit is circled on the ground where the foundation pit is to be excavated, workers can first use a pile driver or the like to drive the side protection 1 into the ground along the edge line, then drive the center column 2 into the ground from the center of the edge line, and then remove the soil between the center column 2 and the side protection 1 to form a cylindrical deep foundation pit; the center column 2 comprises a ground anchor 21, a rotating rod 22 and a driving device 23, the bottom end of the ground anchor 21 is embedded in the bottom wall of the deep foundation pit, the top end of the ground anchor 21 is higher than the bottom wall of the deep foundation pit and is provided with a rotating groove, the rotating groove is provided with a thrust ball bearing 24, the bottom end of the rotating rod 22 is inserted into the rotating groove and abuts against the thrust ball bearing 24, a clamping groove 221 is formed on the rod body of the rotating rod 22, and the top end of the clamping groove 221 extends to the top of the rotating rod 22 and forms an opening; the driving device 23 can be a rotating motor, and the output shaft of the rotating motor is key-connected to the top end of the rotating rod 22.

[0031] Referring to Figure 3 and Figure 4The support assembly 3 comprises a telescopic column 31, four support columns 32 and four scaffolding plates 33. A helical slide rail 12 is arranged on the inner side wall of the edge guard 1 along the circumferential direction of the edge guard 1. The telescopic column 31 comprises a cylinder sleeve ring 311 and a telescopic cylinder 312. The cylinder sleeve ring 311 is sleeved on the rotating rod 22. A clamping block is arranged on the inner ring of the cylinder sleeve ring 311. The clamping block can be inserted into the clamping groove 221 and abut against the inner wall of the clamping groove 221, so as to limit the rotation of the cylinder sleeve ring 311 around the rotating rod 22. The cylinder body of the telescopic cylinder 312 is connected with the cylinder sleeve ring 311. A ball 3121 is arranged at the end of the piston rod of the telescopic cylinder 312. The slide rail 12 can be in the form of a track groove. The ball 3121 is inserted into the track groove and can slide along the track groove. The highest end of the slide rail 12 is provided with an inlet groove 121. The top end of the inlet groove 121 extends to the top end of the edge guard 1 and forms an opening. The bottom end of the clamping groove 221 is not higher than the bottom end of the slide rail 12. When the user moves the cylinder sleeve ring 311 downward after sleeving the cylinder sleeve ring 311 on the rotating rod 22, the ball 3121 can slide into the track groove of the slide rail 12 along the inlet groove 121. The arrangement of the ball 3121 and the track groove enables the piston rod of the telescopic cylinder 312 to slide along the track groove while abutting against the groove wall on the side of the track groove away from the center column 2, so that the telescopic cylinder 312 can abut against the rotating rod 22 along the track groove.

[0032] Referring to Figure 2 and Figure 3, the support column 32 corresponds to one of the split plates 11, each of the support columns 32 comprises an abutting ring 321, a sand cylinder 322, an abutting rod 323 and a protection plate 324, the abutting ring 321 is sleeved on the rotating rod 22 and located above the cylinder sleeve ring 311, one end of the sand cylinder 322 is connected with the abutting ring 321, the cylinder mouth of the sand cylinder 322 is located at the other end of the sand cylinder 322, one end of the abutting rod 323 can abut against the corresponding split plate 11, the other end of the abutting rod 323 passes through the cylinder mouth of the sand cylinder 322 and is inserted into the sand cylinder 322 to abut against the inner wall of the sand cylinder 322, and a containing cavity is formed between the abutting rod 323 and the inner wall of the sand cylinder 322, a sand hole 3221 is formed in the side wall of the sand cylinder 322 and leads to the containing cavity, and a plug cover is detachably connected at the hole mouth of the sand hole 3221; one side surface of the protection plate 324 is connected with the end of the abutting rod 323 away from the sand cylinder 322, the other side surface of the protection plate 324 can abut against the corresponding split plate 11, and a reinforcing rib 3241 is further arranged between the protection plate 324 and the abutting rod 323, so that the arrangement of the protection plate 324 can reduce the pressure between the support column 32 and the split plate 11, so that the split plate 11 is not easy to be damaged by the support column 32; the arrangement of the reinforcing rib 3241 can strengthen the connection between the protection plate 324 and the abutting rod 323; finally, the rotating motor can drive the rotating rod 22 to rotate in the rotating groove, so that the rotating rod 22 can drive the telescopic column 31 to rotate through rotation, when the telescopic column 31 rotates around the rotating rod 22, the piston rod of the telescopic cylinder 312 can ascend along the slide rail 12 and drive each support column 32 to ascend, or descend along the slide rail 12 and make each support column 32 slide down along the rotating rod 22, so that the worker can first use the telescopic column 31 to abut the split plate 11 away from the center column 2, and then abut the support column 32 between the split plate 11 and the center column 2, so that the telescopic column 31 can complete the installation of the support column 32 between each split plate 11 and the center column 2, so that the support column 32 can support each split plate 11.

[0033] Referring to Figure 2 and Figure 4After the installation is completed, the four support columns 32 are arranged in four layers in the vertical direction, the four support columns 32 correspond to the four scaffolds 33 one by one, the top and bottom of the scaffold 33 are connected with the abutment plate 331, the abutment plate 331 is provided with a clearance hole, the top of each sand cylinder 322 is provided with a plurality of connecting screw holes, the clearance hole and the connecting screw hole correspond to each other, each abutment plate 331 can be connected with the corresponding sand cylinder 322 through the bolt passing through the clearance hole of the abutment plate 331 and the corresponding connecting screw hole, so that the scaffold 33 can be connected with the corresponding sand cylinder 322 through the bolt passing through the clearance hole of the abutment plate 331 and the corresponding connecting screw hole, so that the top of each scaffold 33 can be connected with the column body of the corresponding layer of support column 32 through the bolt nut, the bottom of the lowest one of the plurality of scaffolds 33 abuts against the bottom of the deep foundation pit, and the bottom of the remaining scaffolds 33 can be detachably connected with the adjacent layer of support column 32 through the bolt nut, so that the workers can form a scaffold by laying the scaffolds 33 between the layers of support columns 32, and then enter and exit the deep foundation pit through the scaffold.

[0034] The use process of the deep foundation pit reinforcing and supporting device of the present application is as follows: After the soil between the rotating rod 22 and the side protection 1 is removed to form a deep foundation pit, the worker can first fit the cylinder sleeve ring 311 on the rotating rod 22 and insert the clamping block into the clamping groove 221 to enable the rotating rod 22 to rotate the telescopic column 31 by autorotation, then control the driving device 23 to drive the rotating rod 22 to autorotate and drive the telescopic cylinder 312 to rotate and descend along the slide rail 12 around the rotating rod 22, and in this descending process, whenever the telescopic cylinder 312 rotates to a position abutting against a piece of the partition plate 11, the driving device 23 is first controlled to drive the rotating rod 22 to stop autorotation, then the piston rod of the telescopic cylinder 312 is controlled to move away from the rotating rod 22 and abut the partition plate 11 away from the rotating rod 22 by a certain distance, then the abutment rod 323 of the support column 32 corresponding to the partition plate 11 is abutted against the partition plate 11 and filled with sand from the sand hole 3221 into the containing cavity, then the sand hole 3221 is closed and the piston rod of the telescopic cylinder 312 is controlled to move close to the rotating rod 22 by a certain distance, and finally the driving device 23 is controlled to drive the rotating rod 22 to continue autorotation until the telescopic cylinder 312 rotates to a position abutting against the next piece of the partition plate 11; by repeating the above process until the rotating rod 22 and all the partition plates 11 are abutted against the support columns 32 and the plurality of support columns 32 are arranged in multiple layers in the vertical direction, the installation of the support columns 32 between each partition plate 11 and the central column 2 can be realized, and finally the footboards 33 are installed between each support column 32 to form a spiral staircase around the central column 2; after the construction inside the deep foundation pit is completed, the worker can first open the sand holes 3221 of each sand cylinder 322 to release the sand in the containing cavity, then control the driving device 23 to drive the rotating rod 22 to autorotate and drive the telescopic cylinder 312 and each support column 32 to ascend along the rotating rod 22, then disassemble each telescopic column 31 and support column 32 from the rotating rod 22 at the top of the rotating rod 22, and finally use a crane to lift the central column 2 and each partition plate 11 out of the deep foundation pit, thereby completing the rapid disassembly of the deep foundation pit reinforcing and supporting device.

[0035] Specifically, the abutting bolt 3211 is also screwed on each abutting ring 321, which can abut against the rod body of the rotating rod 22 and limit the downward movement of the abutting ring 321, so that when the worker needs to release the sand in the containing cavity after the construction inside the deep foundation pit is completed, the abutting bolt is first tightened to limit the downward sliding of each abutting ring 321, so that the spiral staircase can still be formed, and then the footboards 33 are removed layer by layer from bottom to top and the abutting bolt 3211 is loosened when the sand in each sand cylinder 322 is almost gone and the weight is reduced.

[0036] Based on the structure of the above-mentioned deep foundation pit reinforcing and supporting device, the second aspect of the present application also provides a deep foundation pit reinforcing and supporting construction process, which is realized by using the above-mentioned deep foundation pit reinforcing and supporting device, and specifically includes: S1, first circle the edge line on the ground, then hit the multiple sub-plates 11 into the ground along the edge line and make the plate edges of the adjacent two sub-plates 11 abut each other to form a circle of edge protection 1, then hit the center column 2 into the ground from the center of the edge line, and finally remove the soil between the rotating rod 22 and the edge protection 1 to form a deep foundation pit; S2, first, the cylinder sleeve ring 311 is sleeved on the rotating rod 22 and the clamping block is inserted into the clamping groove 221, then the piston rod of the telescopic cylinder 312 is driven to extend and connected with the sliding rail 12, then each abutting ring 321 is sleeved on the rotating rod 22, then the driving device 23 is controlled to drive the rotating rod 22 to rotate and drive the telescopic cylinder 312 to rotate and descend along the sliding rail 12 around the rotating rod 22, and in the process of rotating and descending of the telescopic cylinder 312: S21, when the telescopic cylinder 312 rotates to the position abutting with a sub-plate 11, first control the driving device 23 to drive the rotating rod 22 to stop rotating, then control the piston rod of the telescopic cylinder 312 to move away from the rotating rod 22 and abut the sub-plate 11 away from the rotating rod 22 by a distance, then make the abutting rod 323 of the support column 32 corresponding to the sub-plate 11 abut the sub-plate 11 and fill the sand into the containing cavity from the sand hole 3221, then close the sand hole 3221 and control the piston rod of the telescopic cylinder 312 to move close to the rotating rod 22 by a distance, and finally control the driving device 23 to drive the rotating rod 22 to continue rotating until the telescopic cylinder 312 rotates to the position abutting with the next sub-plate 11; S22, repeat S21 until the rotating rod 22 and all the sub-plates 11 are abutted with the support columns 32, and the multiple support columns 32 are arranged in multiple layers in the vertical direction; S3, first install the scaffolding boards 33 between the support columns 32 from top to bottom to form a scaffold, and then enter the deep foundation pit to carry out construction along the scaffold; S4, after the construction in the deep foundation pit is completed, first remove the scaffolding boards 33 between the support columns 32, then open the sand holes 3221 of the sand cylinders 322 to discharge the sand in the containing cavities, then control the driving device 23 to drive the rotating rod 22 to rotate and drive the telescopic cylinder 312 and the support columns 32 to ascend along the rotating rod 22, then detach the telescopic columns 31 and the support columns 32 from the rotating rod 22 at the top of the rotating rod 22, and finally use a crane to lift the center column 2 and the sub-plates 11 out of the deep foundation pit.

[0037] Since the deep foundation pit reinforcing and supporting construction process of the application is implemented by using the deep foundation pit reinforcing and supporting device, it also has all the technical effects of the deep foundation pit reinforcing and supporting device, especially it can quickly install the support columns 32 between the sub-plates 11 and the center column 2, and can quickly remove the deep foundation pit reinforcing and supporting device after the construction in the deep foundation pit is completed, so that the deep foundation pit reinforcing and supporting device can be repeatedly used.

[0038] The implementation principle of the deep foundation pit reinforcing and supporting device of the present application is as follows: After the edge line of the deep foundation pit is circled on the ground where the foundation pit is to be excavated, the workers can first drive the edge support 1 into the ground along the edge line, then drive the center column 2 into the ground from the center of the edge line, and then remove the soil between the center column 2 and the edge support 1 to form the deep foundation pit, and then install the support assembly 3 between the center column 2 and the edge support 1 and clamp the edge support 1 between the support assembly 3 and the side wall of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can support the side wall of the deep foundation pit; after the construction inside the deep foundation pit is completed, the workers can first remove the support assembly 3 from between the center column 2 and the edge support 1, and then use a crane to lift the center column 2 and each sub-plate 11 out of the deep foundation pit, so that the deep foundation pit reinforcing and supporting device can be quickly removed and reused.

[0039] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A deep foundation pit reinforcing and supporting device for reinforcing a deep foundation pit, characterized in that: The utility model provides a deep foundation pit support structure, which comprises a side protection (1), a center column (2) and a support assembly (3), the side protection (1) is arranged on the sidewall of the deep foundation pit; The center column (2) is inserted into the inside of the deep foundation pit; One side of the support assembly (3) is detachably connected with the center column (2), and the other side of the support assembly (3) abuts against the side protection (1) and clamps the side protection (1) between the support assembly (3) and the sidewall of the deep foundation pit.

2. The deep foundation pit reinforcing and supporting device according to claim 1, characterized in that: The support assembly (3) comprises a telescopic column (31) and at least two support columns (32), the inner sidewall of the side protection (1) is provided with a slide rail (12) along the circumference of the side protection (1), the side protection (1) comprises a plurality of sub-boards (11), the sub-boards (11) correspond to the support columns (32) one by one, one end of the telescopic column (31) is rotatably connected to the column body of the center column (2), the other end of the telescopic column (31) is slidably connected to the slide rail (12), one end of each of the support columns (32) is detachably connected with the center column (2), and the end of the telescopic column (31) away from the center column (2) can be away from the center column (2) and abut against any one of the sub-boards (11) away from the center column (2), so that the sub-board (11) abuts against the corresponding support column (32) between the sub-board (11) and the center column (2).

3. The device for reinforcing and supporting a deep foundation pit according to claim 2, characterized in that: The telescopic column (31) comprises a cylinder sleeve ring (311) and a telescopic cylinder (312), the cylinder sleeve ring (311) is sleeved on the center column (2), the cylinder body of the telescopic cylinder (312) is connected with the cylinder sleeve ring (311), and the piston rod of the telescopic cylinder (312) is connected with the slide rail (12), when the telescopic cylinder (312) rotates around the center column (2), the piston rod of the telescopic cylinder (312) can slide along the slide rail (12).

4. The device for reinforcing and supporting a deep foundation pit according to claim 3, characterized in that: The end of the piston rod of the telescopic cylinder (312) is provided with a ball (3121), the slide rail (12) is formed with a track groove along the length direction of the slide rail (12), and the ball (3121) is inserted into the track groove and can slide along the track groove.

5. The device for reinforcing and supporting a deep foundation pit according to claim 3, characterized in that: The support column (32) comprises an abutting ring (321), a sand cylinder (322) and an abutting rod (323), the abutting ring (321) is sleeved on the center column (2) and located above the cylinder sleeve ring (311), one end of the sand cylinder (322) is connected with the abutting ring (321), the cylinder opening of the sand cylinder (322) is located at the other end of the sand cylinder (322), one end of the abutting rod (323) can abut against the corresponding sub-board (11), the other end of the abutting rod (323) penetrates through the cylinder opening of the sand cylinder (322), is inserted into the inside of the sand cylinder (322) and abuts against the inner wall of the sand cylinder (322), a containing cavity is formed between the abutting rod (323) and the inner wall of the sand cylinder (322), and a sand hole (3221) leading into the containing cavity is formed in the sidewall of the sand cylinder (322).

6. The device for reinforcing and supporting a deep foundation pit according to claim 5, characterized in that: The support column (32) further comprises a protection plate (324), one side surface of the protection plate (324) is connected with one end of the abutting rod (323) away from the sand cylinder (322), and the other side surface of the protection plate (324) can abut against the corresponding split plate (11); and a reinforcing rib (3241) is further arranged between the protection plate (324) and the abutting rod (323).

7. The device for reinforcing and supporting a deep foundation pit according to claim 5, characterized in that: The slide rail (12) is formed in a spiral shape along the sidewall of the deep foundation pit; the center column (2) comprises a ground anchor (21), a rotating rod (22) and a driving device (23); the bottom end of the ground anchor (21) is inserted into the bottom wall of the deep foundation pit; a rotating groove is formed in the top end of the ground anchor (21); a thrust ball bearing (24) is arranged in the rotating groove; the bottom end of the rotating rod (22) is inserted into the rotating groove and abuts against the thrust ball bearing (24); a clamping groove (221) is formed in the rod body of the rotating rod (22); the top end of the clamping groove (221) extends to the top of the rotating rod (22) and forms an opening; the bottom end of the clamping groove (221) is not higher than the bottom end of the slide rail (12); the cylinder sleeve ring (311) and the abutting ring (321) can be sleeved on the rotating rod (22); a clamping block is arranged on the inner ring of the cylinder sleeve ring (311); the clamping block can be inserted into the clamping groove (221) and abut against the inner wall of the clamping groove (221), so as to limit the rotation of the cylinder sleeve ring (311) around the rotating rod (22); the driving device (23) is in transmission connection with the rotating rod (22) and can drive the rotating rod (22) to rotate in the rotating groove, so that the rotating rod (22) drives the telescopic column (31) to rotate through rotation; when the telescopic column (31) rotates around the rotating rod (22), the piston rod of the telescopic cylinder (312) can ascend along the slide rail (12) and drive each support column (32) to ascend, or descend along the slide rail (12) and enable each support column (32) to slide downward along the rotating rod (22).

8. The device for reinforcing and supporting a deep foundation pit according to claim 7, characterized in that: The support assembly (3) further comprises a plurality of footboards (33); the plurality of support columns (32) are arranged in multiple layers in the vertical direction; the plurality of support columns (32) and the footboards (33) correspond to each other; the top of each footboard (33) is detachably connected with the column body of the corresponding support column (32) in one layer; the bottom of the lowermost footboard (33) among the plurality of footboards (33) abuts against the bottom of the deep foundation pit; and the bottom of each of the remaining footboards (33) is detachably connected with the support column (32) in the adjacent layer.

9. The device for reinforcing and supporting a deep foundation pit according to claim 8, characterized in that: The top and bottom of the scaffold board (33) are connected with abutting plates (331), the abutting plates (331) are provided with a plurality of positioning holes, the top of each sand cylinder (322) is provided with a plurality of connecting screw holes, the positioning holes and the connecting screw holes are one-to-one corresponding, and each abutting plate (331) can be connected with the corresponding sand cylinder (322) through the screwing of the bolt passing through the positioning hole of the abutting plate (331) and the corresponding connecting screw hole.

10. A deep foundation pit reinforcing and supporting construction process, which is implemented by using the deep foundation pit reinforcing and supporting device according to claim 8, characterized in that, The utility model relates to a kind of deep foundation pit construction method, including: S1, first circle edge line on ground, then multiple sub-boards (11) are driven into ground along the edge line and the board edge of adjacent two sub-boards (11) are mutually attached to form a circle edge guard (1), then center column (2) is driven into ground from the center of edge line, finally, soil between rotating rod (22) and the edge guard (1) is removed to form deep foundation pit; S2, first cylinder sleeve ring (311) is sleeved on the rotating rod (22) and the clamping block is inserted into the clamping groove (221), then the piston rod of telescopic cylinder (312) is driven to elongate and connect with slide rail (12), then each abutting ring (321) is sleeved on the rotating rod (22), then control driving device (23) drives the rotating rod (22) to rotate and drives telescopic cylinder (312) to rotate and descend along slide rail (12) around rotating rod (22), in the process of telescopic cylinder (312) rotating and descending: S21, when telescopic cylinder (312) rotates to the position of abutting with a sub-board (11), first control driving device (23) drives rotating rod (22) to stop rotating, then control the piston rod of telescopic cylinder (312) to move away from rotating rod (22) and make the sub-board (11) abut away from rotating rod (22) by a distance, then make the abutting rod (323) of the corresponding support column (32) of the sub-board (11) abut with the sub-board (11) and fill sand into containing cavity from sand hole (3221), then close sand hole (3221) and control the piston rod of telescopic cylinder (312) to move close to rotating rod (22) by a distance, finally, control driving device (23) drives rotating rod (22) to continue rotating until telescopic cylinder (312) rotates to the position of abutting with next sub-board (11); S22, repeat S21 until the rotating rod (22) and all sub-boards (11) are abutted with support column (32), and multiple support columns (32) are arranged in multiple layers in vertical direction; S3, first install scaffold board (33) between each layer of support column (32) from top to bottom to form scaffold, then enter deep foundation pit inside along scaffold for construction. S4, after the construction inside the deep foundation pit is finished, the footboards (33) between the support columns (32) of each layer are removed first, then the sand holes (3221) of each sand cylinder (322) are opened to release the sand in the containing cavities, then the driving device (23) is controlled to drive the rotating rod (22) to rotate and drive the telescopic cylinders (312) and the support columns (32) to ascend along the rotating rod (22), then each telescopic column (31) and the support column (32) are removed from the rotating rod (22) at the top of the rotating rod (22), finally the center column (2) and each split plate (11) are lifted out of the deep foundation pit by a crane.

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