Deep foundation pit supporting structure and supporting method thereof

Abstract

The application relates to a deep foundation pit supporting structure and a supporting method thereof, and relates to the field of foundation pit supporting, to solve the problem that the position of a supporting plate is inconvenient to adjust, and the supporting structure comprises a mounting base, a stand column and multiple groups of supporting plates arranged on the stand column, the stand column is arranged on the mounting base, the multiple groups of supporting plates correspond to the inner walls of the foundation pit in different directions respectively, and multiple groups of driving assemblies for driving the supporting plates to move and abutting against the inner walls of the foundation pit are arranged on the stand column. The application has the effect that the driving assembly drives the supporting plates on the stand column to move, the supporting plates are driven to move different distances according to the different structures of the foundation pit, the supporting plates abut against the inner walls of the foundation pit, the installation of the supporting structure can be completed, the position of the supporting plate can be conveniently adjusted, workers are more convenient during installation and use, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of foundation pit support, in particular to a deep foundation pit support structure and a support method thereof. BACKGROUND

[0002] With the increasingly tense urban land, the pace of basement construction is also accelerating, and foundation pit support has become an important link in the excavation of underground structure foundation pit. At present, support piles are widely used as foundation pit support structures in foundation pit construction to prevent deformation of the surrounding environment and collapse of the foundation pit, and to ensure the smooth progress of engineering construction and construction safety.

[0003] The utility model discloses a kind of foundation pit support structure and foundation pit support assembly, including support plate, the outer surface of one side of the support plate is respectively provided with connecting seat and support assembly, the support assembly includes first support rod and second support rod, first support rod and the inside of second support rod are installed with lead screw, by being provided with support assembly, it is favorable to adjust the length of support assembly according to different width of foundation pit, it is convenient for the effect of support plate to foundation pit support is better, by being provided with connecting seat, stand, movable slot, fixed bolt, screw hole, through-hole, bottom plate, bolt and mounting hole, not only it is favorable to stand simultaneously support plate on four sides of foundation pit is supported, it is also favorable to prevent foundation pit bottom upheaval.

[0004] For the related technology in the above, the inventor finds that there are the following defects: by rotating the lead screw to adjust the spacing between the first support rod and the second support rod, when the support plate needs to be adjusted after installation, a plurality of lead screws on the same vertical axis need to be rotated simultaneously, which is complex to operate and reduces construction efficiency. SUMMARY

[0005] In order to facilitate the adjustment of the position of the support plate and improve the construction efficiency, the present application provides a deep foundation pit support structure and a support method thereof.

[0006] The deep foundation pit support structure provided by the present application adopts the following technical solution:

[0007] A deep foundation pit support structure, comprising a mounting base, a stand and a plurality of support plates arranged on the stand, the stand is arranged on the mounting base, and the plurality of support plates correspond to the inner walls of the foundation pit in different directions respectively, the stand is provided with a plurality of driving assemblies for driving the support plates to move and abut against the inner walls of the foundation pit.

[0008] By adopting the technical scheme, after the installation base is placed at the bottom of the foundation pit, the driving assembly drives the support plate on the stand to move, according to the different structures of the foundation pit, the support plate is driven to move different distances, the support plate and the inner wall of the foundation pit are abutted, so that the installation of the support structure can be completed, and the position of the support plate can be conveniently adjusted, so that the workers are more convenient during installation and use, and the construction efficiency is improved.

[0009] Optionally, the stand is rotationally connected to the installation base, an axis of rotation of the stand is perpendicular to an upper surface of the installation base, and the stand is provided with a positioning assembly for fixing a relative position of the stand to the installation base.

[0010] By adopting the technical scheme, when the stand rotates, the support plate is driven to rotate, the support plate on the stand is accurately aligned with the inner wall of the foundation pit, and then the position of the stand is fixed by the positioning assembly, so that the support plate can be accurately abutted with the inner wall of the foundation pit after the support plate is driven to move, and the foundation pit support effect is improved.

[0011] Optionally, the positioning assembly comprises a plug-in rod, a sliding groove is formed in the stand along an axis of rotation of the stand, the plug-in rod is slidingly connected in the sliding groove, a spring is arranged between the plug-in rod and the sliding groove, a positioning groove that is adapted to plug-in of the plug-in rod is formed in the installation base, and the positioning groove is arranged around a side of the stand.

[0012] By adopting the technical scheme, when the stand is rotated to a suitable direction, the plug-in rod is inserted into the positioning groove in the installation base, so that the position of the stand can be fixed, the operation is convenient and fast, the stand is more stable after being fixed, and the use effect is better.

[0013] Optionally, the driving assembly comprises a telescopic frame and two groups of sliding blocks, the two groups of sliding blocks are slidingly arranged on the stand along the same line, the telescopic frame is arranged between the two groups of sliding blocks, the telescopic frame is driven to elongate or shorten by the two groups of sliding blocks moving close to or away from each other, the support plate is connected to one end of the telescopic frame away from the sliding blocks, and the stand is provided with an adjusting assembly for driving the two groups of sliding blocks to move close to or away from each other.

[0014] By adopting the technical scheme, the adjusting assembly drives the two groups of sliding blocks to move close to or away from each other, so that the telescopic frame is elongated or shortened, when the sliding blocks move a small distance, the telescopic frame can be elongated by a long distance, the movement efficiency of the support plate is improved, and the support plate is more stable during movement, and the effect of supporting the inner wall of the foundation pit is better.

[0015] Optionally, the adjusting assembly comprises a bidirectional screw rod, the bidirectional screw rod is rotationally connected to the stand, two groups of the sliding blocks are sleeved on the bidirectional screw rod and are located at positions opposite in screw direction respectively, the sliding blocks are threadedly connected to the bidirectional screw rod, and a driving connection assembly is arranged between two adjacent bidirectional screw rods.

[0016] By adopting the above technical scheme, the two groups of sliding blocks are driven to slide by rotating the bidirectional screw rods, the two groups of sliding blocks are close to or away from each other, thereby realizing the extension and retraction driving of the support plates. When it is required to simultaneously adjust the movement of the two groups of support plates, the adjacent bidirectional screw rods are linked by the driving connection assembly. When one bidirectional screw rod is rotated, the other bidirectional screw rod can be driven to rotate, thereby enabling the multiple support plates to move simultaneously, and further improving the construction efficiency.

[0017] Optionally, the driving connection assembly comprises a first bevel gear, a second bevel gear and a connecting rod, the first bevel gear is sleeved on the bidirectional screw rod, the second bevel gears are coaxially arranged at two ends of the connecting rod, and the second bevel gears are in meshing connection with the first bevel gear.

[0018] By adopting the above technical scheme, when it is required to simultaneously drive the two groups of bidirectional screw rods to rotate, the second bevel gears at two ends of the connecting rod and the first bevel gears on the bidirectional screw rods are meshed after the driving connection rod is driven to move, thereby enabling the other bidirectional screw rod to be driven to rotate when one bidirectional screw rod is rotated. The structure is simple, the two groups of bidirectional screw rods can be synchronously rotated, and the use effect is good.

[0019] Optionally, a horizontal adjusting mechanism is arranged on the mounting base, the horizontal adjusting mechanism comprises support height adjusting assemblies arranged at four corners of a bottom end of the mounting base, and the support height adjusting assemblies are used for adjusting the height of the mounting base.

[0020] By adopting the above technical scheme, the support height adjusting assemblies are arranged at the four corners of the mounting base, the height of the four corners of the mounting base is adjusted by the support height adjusting assemblies, thereby ensuring that the mounting base is placed in a horizontal state, and further enabling the support plates to be accurately aligned with the inner wall of the foundation pit, and improving the support effect on the foundation pit.

[0021] Optionally, the support height adjusting assembly comprises a support plate, a threaded rod and a threaded sleeve, the support plate is coaxially fixedly connected to a bottom end of the threaded rod, the threaded sleeve is rotationally connected to the mounting base, a through hole for the threaded rod to pass through is arranged on the same axis of the mounting base and the threaded sleeve, the threaded rod is slidingly arranged on the mounting base along the axis direction of the through hole, and the threaded rod is threadedly connected to the threaded sleeve.

[0022] By adopting the technical scheme, the threaded sleeve is rotated to make the threaded rod slide along the axis direction of the through hole, so that the distance between the support plate and the mounting base can be adjusted, the bottom of the mounting base is supported by the support plate, and the level of the mounting base is adjusted, the structure is simple, the adjustment is convenient, and the construction efficiency is improved.

[0023] Optionally, the bottom of the support plate is provided with an insertion rod, and the insertion rod is perpendicular to the lower surface of the support plate.

[0024] By adopting the technical scheme, when the mounting base is installed to the foundation pit, the insertion rod at the bottom of the support plate is inserted into the soil layer, so that the stability of the mounting base is improved, and the supporting effect of the support plate on the inner wall of the foundation pit is further improved.

[0025] The application provides a supporting method of a deep foundation pit supporting structure.

[0026] The supporting method of the deep foundation pit supporting structure comprises the following steps.

[0027] Step one: first, place the mounting base at the bottom of the foundation pit, and adjust the mounting base by the support heightening assembly at the four corners of the bottom end of the mounting base, so that the mounting base is placed stably.

[0028] Step two: rotate the stand column to adjust the direction of the support plate, so that the support plate is ready to align with the inner wall of the foundation pit.

[0029] Step three: drive the bidirectional screw to rotate, so that the two groups of sliding blocks are close to each other, and then the telescopic frame is elongated to push the support plate to abut against the inner wall of the foundation pit.

[0030] Step four: when it is needed to drive two groups of bidirectional screws to rotate at the same time, the second bevel gear at the two ends of the connecting rod is meshed with the first bevel gear on the bidirectional screw, and then the two groups of bidirectional screws are connected into one whole, so that when one group of bidirectional screw is rotated, the adjacent bidirectional screw is driven to rotate.

[0031] In summary, the application has the following at least beneficial technical effects:

[0032] 1. When the supporting structure is installed, first, place the mounting base at the bottom of the foundation pit, then drive the assembly to drive the support plate on the stand column to move, according to the structure of the foundation pit, drive the support plate to move different distances, so that the support plate abuts against the inner wall of the foundation pit, so that the installation of the supporting structure can be completed, and the position of the support plate can be adjusted conveniently, so that the workers are more convenient during installation and use, and the construction efficiency is improved.

[0033] 2. When the drive column rotates, it can drive the support plate to rotate, thereby making the support plate on the column accurately aligned with the inner wall of the pit. Then, the position of the column is fixed by the positioning component. When the support plate is driven to move, it can accurately abut against the inner wall of the pit, improving the support effect of the pit.

[0034] 3. Rotating the bidirectional screw drives two sets of sliders to slide, with the two sets of sliders moving closer or further apart, thereby enabling the telescopic frame to extend and retract, driving the support plate to move. When it is necessary to adjust the movement of two sets of support plates simultaneously, the adjacent bidirectional screws are linked together through the drive connection component. When one bidirectional screw is rotated, it can drive the other bidirectional screw to rotate, thereby enabling multiple support plates to move simultaneously, further improving construction efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0036] Figure 2 yes Figure 1 Enlarged structural diagram of section A in the middle.

[0037] Reference numerals: 1. Mounting base; 11. Positioning groove; 12. Perforation; 2. Column; 21. Slide groove; 3. Support plate; 4. Drive assembly; 41. Telescopic frame; 42. Slider; 5. Positioning assembly; 51. Insert rod; 52. Spring; 6. Adjustment assembly; 61. Bidirectional screw; 7. Drive connection assembly; 71. First bevel gear; 72. Second bevel gear; 73. Connecting rod; 8. Horizontal adjustment mechanism; 81. Support height adjustment assembly; 811. Support plate; 812. Threaded rod; 813. Threaded sleeve; 814. Insert rod. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0039] This application discloses a deep foundation pit support structure.

[0040] Reference Figure 1 A deep foundation pit support structure includes an installation base 1, a column 2, and multiple sets of support plates 3. The column 2 is mounted on the installation base 1 and is perpendicular to the upper surface of the installation base 1. The multiple sets of support plates 3 are all mounted on the column 2. The column 2 is also equipped with multiple sets of drive components 4. Each set of drive components 4 corresponds to a set of support plates 3. The drive components 4 drive the support plates 3 to move and abut against the inner wall of the foundation pit.

[0041] In actual construction, the installation base 1 is placed in the foundation pit, and the horizontal adjusting mechanism 8 is arranged on the installation base 1 to ensure that the installation base 1 is placed stably. The horizontal adjusting mechanism 8 includes four groups of supporting height adjusting assemblies 81, which are arranged at the bottom corners of the installation base 1 respectively. The height of the installation base 1 is adjusted through the supporting height adjusting assemblies 81. The supporting height adjusting assembly 81 includes a supporting plate 811, a threaded rod 812 and a threaded sleeve 813. The threaded rod 812 is arranged on the installation base 1, and the supporting plate 811 is coaxially fixedly connected to the bottom end of the threaded rod 812. The bottom of the supporting plate 811 is fixedly connected with a plug rod 814 which is perpendicular to the lower surface of the supporting plate 811. When the installation base 1 is placed on the ground, the supporting plate 811 is located below the installation base 1, and the plug rod 814 is inserted into the ground, so that the installation base 1 is more stable after being placed.

[0042] The threaded sleeve 813 is rotationally connected to the four corners of the installation base 1. The installation base 1 and the threaded sleeve 813 are provided with a through hole 12 on the same axis and for the threaded rod 812. The threaded rod 812 is slidingly connected to the installation base 1 along the axis direction of the through hole 12. A limiting block is arranged in the inner wall of the through hole 12 on the installation base 1. A limiting groove is arranged on the outer wall of the threaded rod 812 for the limiting block. The threaded rod 812 is threadedly connected with the threaded sleeve 813. Rotating the threaded sleeve 813 makes the threaded rod 812 slide along the axis direction of the through hole 12, so as to adjust the distance between the supporting plate 811 and the installation base 1. The bottom of the installation base 1 is supported by the supporting plate 811, so as to adjust the height of the installation base 1 and keep the supporting base horizontal.

[0043] In order to accurately abut the support plate 3 to the inner wall of the foundation pit, the column 2 is rotationally connected to the installation base 1. The rotation axis of the column 2 is perpendicular to the upper surface of the installation base 1. The column 2 is provided with a positioning assembly 5. The relative positions of the column 2 and the installation base 1 are fixed by the positioning assembly 5. In this embodiment, the positioning assembly 5 includes a plug rod 51. The column 2 is provided with a sliding groove 21 along the rotation axis direction thereof. The plug rod 51 is slidingly connected in the sliding groove 21. The installation base 1 is provided with a positioning groove 11 which is adapted to be plugged with the plug rod 51. The positioning groove 11 is arranged around the circumferential side of the column 2. The positioning groove 11 is communicated with the sliding groove 21. When the plug rod 51 is slidingly positioned in the lowest position, it is inserted into the positioning groove 11. In order to improve the plugging stability of the plug rod 51, a spring 52 is fixedly connected between the plug rod 51 and the sliding groove 21. The spring 52 pushes the plug rod 51 to abut with the positioning groove 11. After the column 2 is rotated, the support plate 3 is rotated. The column 2 is fixed by plugging the plug rod 51 into the positioning groove 11.

[0044] To drive the support plate 3 to move, the moving assembly comprises a telescopic frame 41 and two groups of sliding blocks 42, the two groups of sliding blocks 42 are slidably connected to the stand 2 along the same vertical axis, the telescopic frame 41 is hingedly connected between the two groups of sliding blocks 42, the stand 2 is provided with an adjusting assembly 6, the two groups of sliding blocks 42 are driven to move close to or away from each other through the adjusting assembly 6, the telescopic frame 41 is driven to extend or shorten through the two groups of sliding blocks 42 moving close to or away from each other, and the support plate 3 is installed at one end of the telescopic frame 41 away from the sliding blocks 42; in the embodiment, the adjusting assembly 6 comprises a bidirectional screw 61, the bidirectional screw 61 is rotatably connected to the stand 2, the two groups of sliding blocks 42 are sleeved on the bidirectional screw 61 and are located at positions with opposite screw directions respectively, the sliding blocks 42 are threadedly connected to the bidirectional screw 61, the two groups of sliding blocks 42 are driven to slide by rotating the bidirectional screw 61, the two groups of sliding blocks 42 move close to or away from each other, so that the telescopic frame 41 is driven to extend or shorten, and the support plate 3 is driven to move.

[0045] To improve the efficiency of adjusting the support plate 3, a driving connection assembly 7 is arranged between two adjacent bidirectional screws 61, the driving connection assembly 7 comprises a first bevel gear 71, a second bevel gear 72 and a connecting rod 73, the first bevel gear 71 is sleeved on the bidirectional screw 61, the second bevel gear 72 is coaxially and fixedly connected to two ends of the connecting rod 73, the connecting rod 73 is externally sleeved with a limiting rod, the limiting rod is slidably connected to the stand 2, a threaded rod 812 is rotatably connected to the limiting rod, the rotating axis direction of the threaded rod 812 is the same as the sliding direction of the limiting rod, the threaded rod 812 is threadedly connected to the stand 2, the second bevel gear 72 is in meshing connection with the first bevel gear 71, when it is needed to simultaneously drive the two groups of bidirectional screws 61 to rotate, the connecting rod 73 is driven to move, so that the second bevel gears 72 at two ends of the connecting rod 73 and the first bevel gears 71 on the bidirectional screws 61 are in meshing connection, thereby when one bidirectional screw 61 is rotated, the other bidirectional screw 61 can be driven to rotate.

[0046] The embodiment of the application discloses a support method of a deep foundation pit support structure.

[0047] The support method of the deep foundation pit support structure comprises the following steps.

[0048] Step one: first, place the mounting base 1 at the bottom of the foundation pit, adjust the mounting base 1 through the support height adjusting assembly 81 at the four corners of the bottom end of the mounting base 1, so that the mounting base 1 is stably placed and mounted;

[0049] Step two: rotate the stand 2 to adjust the direction of the support plate 3, so that the support plate 3 is ready to align with the inner wall of the foundation pit;

[0050] Step three: drive the bidirectional screw 61 to rotate, so that the two groups of sliding blocks 42 move close to each other, and then the telescopic frame 41 is elongated to push the support plate 3 to abut against the inner wall of the foundation pit;

[0051] Step four: when the two groups of bidirectional screw 61 need to be driven to rotate at the same time, the second bevel gear 72 at both ends of the connecting rod 73 is engaged with the first bevel gear 71 on the bidirectional screw 61, and then the two groups of bidirectional screw 61 are connected into a whole, so that when one group of bidirectional screw 61 rotates, the adjacent bidirectional screw 61 is driven to rotate.

[0052] The above are preferred embodiments of the present application, not to limit the protection scope of the present application, therefore: all 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 support structure, characterized by: The utility model relates to a kind of movable support plate, including installation base (1), stand (2) and multiple groups of support plate (3) being set on the stand (2), the stand (2) is set on installation base (1), and multiple groups of the support plate (3) correspond to the inner wall of foundation pit different direction respectively, and the stand (2) is provided with multiple groups of driving assembly (4) for driving the support plate (3) movement and the inner wall of foundation pit movable abutment on it; The stand (2) is rotatably connected to the installation base (1), and the rotation axis of the stand (2) is perpendicular to the upper surface of the installation base (1). The stand (2) is provided with a positioning assembly (5) for fixing the relative position of the stand (2) and the installation base (1). The driving assembly (4) includes a telescopic frame (41) and two groups of sliding blocks (42). The two groups of sliding blocks (42) are slidingly arranged on the stand (2) along the same straight line. The telescopic frame (41) is arranged between the two groups of sliding blocks (42). The telescopic frame (41) is driven to elongate or shorten by the two groups of sliding blocks (42) moving closer to or away from each other. The support plate (3) is connected to one end of the telescopic frame (41) away from the sliding blocks (42). The stand (2) is provided with an adjusting assembly (6) for driving the two groups of sliding blocks (42) to move closer to or away from each other. The adjusting assembly (6) includes a bidirectional screw (61). The bidirectional screw (61) is rotatably connected to the stand (2). The two groups of sliding blocks (42) are sleeved on the bidirectional screw (61) and are located at positions with opposite screw directions, respectively. The sliding blocks (42) are threadedly connected to the bidirectional screw (61). A driving connection assembly (7) is arranged between the two adjacent bidirectional screws (61). The driving connection assembly (7) includes a first bevel gear (71), a second bevel gear (72), and a connecting rod (73). The first bevel gear (71) is sleeved on the bidirectional screw (61). The second bevel gear (72) is coaxially arranged at both ends of the connecting rod (73). The second bevel gear (72) is in meshing engagement with the first bevel gear (71).

2. A deep foundation pit support structure according to claim 1, wherein: The positioning assembly (5) includes a plug-in rod (51). A sliding groove (21) is formed in the stand (2) along the rotation axis direction of the stand (2). The plug-in rod (51) is slidingly connected in the sliding groove (21). A spring (52) is arranged between the plug-in rod (51) and the sliding groove (21). A positioning groove (11) is formed in the installation base (1) and is adapted to plug-in connection with the plug-in rod (51). The positioning groove (11) is arranged around the circumferential side of the stand (2).

3. The deep foundation pit support structure according to claim 1, characterized in that: The installation base (1) is provided with a horizontal adjusting mechanism (8). The horizontal adjusting mechanism (8) includes support height adjusting assemblies (81) arranged at the four corners of the bottom end of the installation base (1). The support height adjusting assemblies (81) are used to adjust the height of the installation base (1).

4. A deep foundation pit support structure according to claim 3, wherein: The support height adjusting assembly (81) comprises a support plate (811), a threaded rod (812) and a threaded sleeve (813), the support plate (811) is coaxially fixedly connected to the bottom end of the threaded rod (812), the threaded sleeve (813) is rotationally connected to the mounting base (1), the mounting base (1) and the threaded sleeve (813) are provided with a through hole (12) on the same axis and for the threaded rod (812) to pass through, the threaded rod (812) is slidingly arranged on the mounting base (1) along the axis direction of the through hole (12), and the threaded rod (812) is threadedly connected with the threaded sleeve (813).

5. A deep foundation pit support structure according to claim 4, wherein: The bottom of the support plate (811) is provided with an insertion rod (814), and the insertion rod (814) is perpendicular to the lower surface of the support plate (811).

6. A method of supporting a deep foundation pit support structure according to any one of claims 3 to 5, characterised in that: The method comprises the following steps: Step one: first, place the mounting base (1) at the bottom of the foundation pit, adjust the mounting base (1) through the support height adjusting assembly (81) at the four corners of the bottom end of the mounting base (1), so that the mounting base (1) is stably placed and mounted; Step two: rotate the stand column (2) to adjust the direction of the support plate (3), so that the support plate (3) is ready to align with the inner wall of the foundation pit; Step three: drive the bidirectional screw rod (61) to rotate, so that the two groups of sliding blocks (42) are close to each other, and then the telescopic frame (41) is elongated, and the support plate (3) is pushed to abut against the inner wall of the foundation pit; Step four: when it is needed to drive two groups of bidirectional screw rods (61) to rotate at the same time, the second bevel gear (72) at both ends of the connecting rod (73) is meshed with the first bevel gear (71) on the bidirectional screw rod (61), and then the two groups of bidirectional screw rods (61) are connected into a whole, so that when one group of bidirectional screw rod (61) is rotated, the adjacent bidirectional screw rod (61) is driven to rotate.

Images