CN115198763A - Supporting structure and construction method of deep foundation pit of oblique support pile combined type steel continuous wall - Google Patents
Supporting structure and construction method of deep foundation pit of oblique support pile combined type steel continuous wall Download PDFInfo
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- CN115198763A CN115198763A CN202210862257.2A CN202210862257A CN115198763A CN 115198763 A CN115198763 A CN 115198763A CN 202210862257 A CN202210862257 A CN 202210862257A CN 115198763 A CN115198763 A CN 115198763A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 37
- 239000010959 steel Substances 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000009412 basement excavation Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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Abstract
The utility model belongs to the technical field of the technique of deep basal pit excavation and specifically relates to a supporting construction and construction method that relate to oblique brace stake combination shaped steel diaphragm wall deep basal pit, include the foundation ditch body and pour the diaphragm wall body in foundation ditch body lateral wall, one side that the diaphragm wall body is close to foundation ditch body inside is provided with a plurality of backplate, be provided with the stock on the backplate, the stock passes the supporting plate and inserts and establish at the diaphragm wall originally internally, and is a plurality of the backplate evenly arranges on foundation ditch body lateral wall, be provided with supporting component in the foundation ditch, supporting component includes supporting disk, down tube and base, the base is fixed on the bottom of foundation ditch and is separated the setting with the supporting plate, the supporting disk sets up the edge department at four adjacent backplate, supporting disk and supporting plate butt, the both ends of down tube are connected in supporting disk and base respectively and are used for supporting the supporting disk. This application has the effect of promoting foundation ditch support's stability.
Description
Technical Field
The application relates to the technical field of deep foundation pit excavation, in particular to a supporting structure and a construction method of a deep foundation pit of an oblique supporting pile combined type steel continuous wall.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. The deep foundation pit refers to a foundation pit with an excavation depth of more than 5 meters and including 5 meters, or a project with a depth of less than 5 meters but with particularly complicated geological conditions, surrounding environments and underground pipelines. In the construction process of the foundation pit, a supporting structure needs to be arranged on the side wall of the foundation pit, wherein the underground continuous wall is one of the supporting structures.
In the related art, a construction method of a supporting structure of a deep foundation pit adopts a trenching machine to deeply excavate the peripheral axis of a project, excavate a long and narrow deep groove under the condition of slurry wall protection, and then clean the groove. After the groove is cleaned, a steel reinforcement cage is hung in the groove, section steels are placed in the groove at intervals, then concrete is poured to form unit groove sections, the steps are carried out section by section, a continuous reinforced concrete wall is built underground to serve as structures for water interception, seepage prevention, bearing, water blocking and the like, and the section steels can be recycled.
In the related technology, the foundation pit is only supported through the continuous wall, and the stability of the continuous wall is insufficient along with the gradual increase of the excavation depth of the foundation pit, so that the construction is influenced.
Disclosure of Invention
In order to improve the stability of foundation pit support, the application provides a support structure and a construction method of a deep foundation pit of an oblique support pile combined type steel continuous wall
First aspect, this application provides a supporting construction of oblique brace stake combination shaped steel continuous wall deep basal pit excavation.
The following technical scheme is adopted:
supporting construction of deep basal pit excavation of oblique brace stake combination shaped steel continuous wall, including the foundation ditch body and pour the continuous wall body in foundation ditch body lateral wall, one side that the continuous wall body is close to foundation ditch body inside is provided with a plurality of backplate, be provided with the stock on the backplate, the stock passes the backup plate and inserts and establish this internal, and is a plurality of backplate evenly arranges on foundation ditch body lateral wall, this internal supporting component that is provided with of foundation ditch, supporting component includes supporting disk, down tube and base, the base is fixed on the bottom of foundation ditch body and is separated the setting with the backup plate, the supporting disk sets up the edge department at four adjacent backplate, supporting disk and backup plate butt, the both ends of down tube are connected in supporting disk and base respectively and are used for supporting the supporting disk.
Through adopting above-mentioned technical scheme, support the supporting plate through supporting disk, down tube and base, fix the supporting plate on the diaphragm wall body, promote the stability of supporting plate, support foundation ditch body lateral wall simultaneously through a backplate and diaphragm wall body, promote the stability of whole supporting.
Furthermore, be provided with four bracing pieces on the supporting disk, four the bracing piece is located the interval around the center of supporting disk and is set up, four the bracing piece is respectively in four adjacent fender one-to-one settings, bracing piece and fender butt are used for supporting a backplate.
Through adopting above-mentioned technical scheme, set up bracing piece and supporting plate butt, promote and the area of contact between the supporting plate through the bracing piece, further promote the stability of supporting the supporting plate.
Further, the draw-in groove has been seted up to the edge of propping up the backplate, the supporting disk card is established in the draw-in groove, the mounting groove has been seted up to the side of supporting disk, one side lateral wall that the mounting groove is close to the foundation ditch body and the inside one side of supporting plate near the foundation ditch body are on the coplanar, the bracing piece sets up in the mounting groove, bracing piece and mounting groove inner wall butt.
Through adopting above-mentioned technical scheme, set up the draw-in groove on the supporting plate, the supporting disk passes through the draw-in groove and the supporting plate is connected, promotes the stability of connecting between supporting disk and the supporting plate through the draw-in groove, sets up bracing piece and mounting groove inner wall butt simultaneously, in the supporting disk and supporting plate complex, promotes the complex stability between bracing piece and the supporting plate.
Further, correspond with the bracing piece in the mounting groove and be provided with a plurality of connecting rods, bracing piece and connecting rod rotate to be connected, the one end that the bracing piece deviates from the connecting rod rotates and is provided with the push rod, bracing piece and connecting rod set up in the coplanar, the center department that the supporting disk deviates from one side of foundation ditch body is provided with the intermediate lever, the setting of intermediate lever perpendicular to supporting disk, the one end that deviates from the bracing piece on the push rod is provided with the ejector pad, set up threaded groove along its length direction on the intermediate lever, the outside screw-thread fit of intermediate lever has the cover that pushes away, it has seted up the groove of pushing away to push away one side that the cover is close to the supporting disk, push away the cover and be used for driving the ejector pad through groove and ejector pad cooperation and remove on the intermediate lever.
Through adopting above-mentioned technical scheme, when the installation, rotate the push rod to the side butt of ejector pad and intermediate lever, then rotate the ejector pad, until pushing away the cover through push away groove and ejector pad lock, continue to rotate and push away the cover, drive the push rod when driving the ejector pad removal and rotate, drive the bracing piece and rotate towards the supporting plate for bracing piece and the tight butt of supporting plate promote the stability of complex between bracing piece and the supporting plate.
Furthermore, the push block is arc-shaped, and the inner side of the push block is abutted against the side surface of the middle rod.
Through adopting above-mentioned technical scheme, promote the area of contact between ejector pad and the intermediate lever, promote the stability of ejector pad when removing.
Furthermore, the center department of mounting groove rotates and is provided with two swivel beckets, two the pivot of swivel beckets and the coincidence of the central line of mounting groove, four the connecting rod is two sets of respectively, every group the connecting rod cross arrangement, two sets of connecting rod and two swivel beckets one-to-one set up, every group the connecting rod sets up on same straight line, the side of connecting rod and swivel beckets is connected.
Through adopting above-mentioned technical scheme, connecting rod and swivel becket are connected to rotate the connecting rod to the assigned position when needs are installed, rotate the connecting rod to packing up the state when needs are carried, the construction of being convenient for promotes the installation effectiveness.
Furthermore, two limiting blocks are arranged in the mounting groove, the limiting blocks are fan-shaped, the central angles of the limiting blocks are 90 degrees, the two limiting blocks are symmetrically arranged around the central line of the supporting disc, the rotating ring is arranged between the two limiting blocks, and the connecting rod is arranged between the two limiting blocks.
Through adopting above-mentioned technical scheme, set up the stopper, when the connecting rod expandes, connecting rod and stopper butt block the connecting rod to quick rotate the connecting rod to the assigned position, promote the installation effectiveness.
Furthermore, a placing groove is formed in the inner wall, close to one side of the supporting plate, of the mounting groove, two placing grooves are formed in the placing groove and correspond to the gap between the two limiting blocks respectively, a top block is arranged in the placing groove and slides along the central line direction of the supporting disk in the placing groove, and the top block slides to the outside of the placing groove and is used for fixing the connecting rod in a butt mode.
Through adopting above-mentioned technical scheme, after the connecting rod expandes, the outside of position to standing groove of slip kicking block for kicking block, stopper are fixed the connecting rod simultaneously with the side butt of connecting rod, reduce the bracing piece and appear the phenomenon of rotating the skew when the cooperation of supporting plate, promote the stability of complex between bracing piece and the supporting plate.
Furthermore, a through groove is formed in one side, close to the middle rod, of the supporting plate, the through groove is formed in the direction of the center line of the supporting plate, the through groove is communicated with the placing groove, the middle rod is arranged in the through groove in a sliding mode, a fixing rod is arranged at the end portion of the middle rod, and the middle rod is connected with the ejecting block through the fixing rod.
Through adopting above-mentioned technical scheme, set up the intermediate lever and connect with the kicking block, can adjust the position of intermediate lever when promoting the bracing piece pivoted, and then adjust the position of kicking block to fix the position of dead lever.
In a second aspect, the application provides a construction method of a supporting structure for excavating a deep foundation pit of an oblique supporting pile combined type steel continuous wall.
The technical scheme is as follows:
the construction method of the supporting structure for excavating the deep foundation pit of the oblique supporting pile combined type steel continuous wall comprises the following steps:
s1, sequentially mounting a support plate on a support plate through anchor rods;
s2, placing the supporting disc in the clamping groove through the abdicating groove, and then fixing the base at the bottom of the foundation pit body;
s3, rotating the supporting rod until the connecting rod is abutted against the limiting block, and then rotating the push rod to rotate the push block until the push block is abutted against the side face of the middle rod;
s4, rotating the push sleeve, driving the push block to move by the push sleeve, and simultaneously driving the support rod to abut against the side face of the support plate;
s5, continuing to rotate the push sleeve, driving the middle rod to move by the push sleeve, driving the ejector block to be abutted against the side face of the connecting rod by the middle rod, and fixing the connecting rod;
and S6, rotating the push sleeve again, enabling the ejector block to abut against the inner wall of the mounting groove, stopping moving the intermediate rod, and continuously driving the push rod and the support rod to rotate by the push sleeve, so that the support rod and the support plate are tightly abutted to support the support plate.
Drawings
Fig. 1 is a schematic structural diagram of a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall in an embodiment of the application.
Fig. 2 is a partial view of a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the application.
Fig. 3 is a structural view of a support disc in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall in the embodiment of the application.
Fig. 4 is a structural view of a support assembly in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the application.
Fig. 5 is a structural view of a support rod in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall in the embodiment of the application.
Fig. 6 is an enlarged view at a in fig. 5.
Fig. 7 is a structural view of a push block in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the application.
Fig. 8 is a cut-away view of a support disc in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall in the embodiment of the application.
Fig. 9 is a structural view of a rotating ring in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the present application.
Fig. 10 is a structural view of a top block in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the application.
Fig. 11 is a cut-away view of a support disc in a supporting structure for excavation of a deep foundation pit of an oblique support pile combined type steel continuous wall according to an embodiment of the application.
Reference numerals: 1. a foundation pit body; 11. a continuous wall body; 12. a bottom groove; 13. buckling the plate; 2. supporting the guard plate; 21. an anchor rod; 22. a card slot; 23. a yielding groove; 3. a support assembly; 31. a support disc; 32. a diagonal bar; 33. a base; 4. a support bar; 5. mounting grooves; 51. a connecting rod; 52. a rotating ring; 53. a limiting block; 54. a placement groove; 6. a push rod; 61. an intermediate lever; 611. a thread groove; 62. a push block; 63. pushing a sleeve; 631. pushing the groove; 7. a top block; 71. fixing the rod; 8. a through groove; 9. installing a sleeve; 91. a reset member.
Detailed Description
The present application is described in further detail below with reference to figures 1-11.
The application discloses supporting construction of slant support pile combination shaped steel diaphragm wall deep basal pit excavation.
Referring to fig. 1 and 2, the supporting structure of the excavation of deep foundation pit of oblique brace pile combination section steel continuous wall includes foundation pit body 1, continuous wall body 11 has been pour in the lateral wall of foundation pit body 1, one side that is close to foundation pit body 1 inside at continuous wall body 11 is provided with a backplate 2, be provided with supporting component 3 in foundation pit body 1, supporting component 3 is used for supporting backplate 2, when continuous wall body 11 is strutted foundation pit body 1, further promote the stability of continuous wall body 11 through a backplate 2, promote the stability that foundation pit body 1 strutted.
Referring to fig. 1 and 2, an anchor rod 21 is arranged on a supporting plate 2, the anchor rod 21 is inserted into a continuous wall body 11, the supporting plate 2 is fixed on the continuous wall body 11 through the anchor rod 21, a bottom groove 12 is formed in the bottom wall of a foundation pit body 1, the bottom groove 12 corresponds to the side wall of the foundation pit body 1, the supporting plate 2 is provided with a plurality of supporting plates 2, the supporting plates 2 are uniformly arranged on the side wall of the foundation pit body 1, the side faces of every two adjacent supporting plates 2 are mutually abutted, the side face of the supporting plate 2 close to the bottom of the foundation pit body 1 is arranged in the bottom groove 12, a buckle plate 13 is arranged at the top edge of the foundation pit body 1, one side of the buckle plate 13 is inserted into the ground, the other side of the buckle plate extends to the supporting plate 2 and bends towards the inner direction of the foundation pit body 1, the edge of the buckle plate 13 is buckled at the edge of the supporting plate 2, and the stability of the supporting plate 2 is improved through the buckle plate 13 and the bottom groove 12.
Referring to fig. 2 and 3, the support assembly 3 includes a support plate 31, a diagonal rod 32 and a base 33, the support plate 31 and the base 33 are respectively disposed at two ends of the diagonal rod 32, the base 33 and the sidewall of the foundation pit body 1 are disposed at intervals, the support plate 31 is disposed at the corners of the plurality of support plates 2, the support plate 31 is simultaneously abutted to the four support plates 2, and two ends of the diagonal rod 32 are respectively rotatably connected to the support plate 31 and the base 33. The down tube 32 is connected with the supporting plate 2 through the supporting disk 31, supports the supporting plate 2, and simultaneously, the supporting disk 31 is arranged to be simultaneously abutted against the four supporting plates 2, so that the overall stability of the supporting plate 2 is improved.
Referring to fig. 3 and 4, the support plate 31 is provided with four support rods 4, the support rods 4 and the support plate 2 are correspondingly provided with four support rods, that is, each support plate 2 is correspondingly provided with one support rod 4, the four support rods 4 are arranged around the center of the support plate 31 at intervals, and the support rods 4 abut against the side surfaces of the support plate 2. The supporting area of the supporting plate 2 is increased by arranging the supporting rod 4, and the stability of the supporting plate 2 is further improved.
Referring to fig. 2 and 3, in order to facilitate the connection between the supporting disc 31 and the supporting plate 2, the clamping grooves 22 are formed at the corners of the supporting plate 2 and at the positions corresponding to the supporting disc 31, after the supporting plate 2 is installed on the side wall of the foundation pit body 1, the plurality of clamping grooves 22 are correspondingly arranged and communicated with each other, and the side surface of the supporting disc 31 is clamped in the plurality of clamping grooves 22. In order to place supporting disk 31 in draw-in groove 22 for the convenience, deviate from 1 diapire department of foundation ditch body and offered the groove of stepping down 23 on the draw-in groove 22 inside wall, supporting disk 31 places in draw-in groove 22 through the groove of stepping down 23, then slides towards the direction of 1 bottom of foundation ditch body, until moving to the inner wall butt of its side and draw-in groove 22, connects supporting disk 31 and supporting plate 2.
Referring to fig. 4 and 5, a mounting groove 5 is formed in the side surface of the support plate 31, the support rod 4 is disposed in the mounting groove 5, and after the support plate 31 is placed in the clamping groove 22, the side wall of one side of the mounting groove 5, which is close to the foundation pit body 1, and the side of the support plate 2, which is close to the inside of the foundation pit body 1, are abutted to each other on the same plane, that is, the side surface of the support rod 4 and the side surface of the mounting groove 5, which is close to the side wall of the foundation pit body 1, are abutted to the side surface of the support plate 2.
Referring to fig. 5 and 6, in order to facilitate the matching between the support rod 4 and the supporting plate 2, a plurality of connecting rods 51 are disposed in the mounting groove 5, the connecting rods 51 and the support rod 4 are disposed correspondingly, and the connecting rods 51 are disposed along a direction away from the center of the support plate 31, one side of the support rod 4 close to the inside of the foundation pit body 1 and the inner wall of the mounting groove 5 are disposed at intervals, the mounting rod is rotatably connected to the connecting rods 51, a push rod 6 is disposed at one end of the support rod 4 away from the support plate 31, the push rod 6 is rotatably disposed on the support rod 4, an intermediate rod 61 is disposed at one side of the support plate 31 away from the foundation pit body 1, the intermediate rod 61 is disposed at the center of the support plate 31 and perpendicular to the support plate 31, the support rod 4, the push rod 6 and the intermediate rod 61 are disposed in the same plane, a push block 62 is rotatably disposed at one end of the push rod 6 away from the support rod 4, a threaded groove 611 is disposed on the intermediate rod 61 along the length direction thereof, a push sleeve 63 is engaged with a push sleeve 63 in the external threaded groove 63, and a push sleeve 631 disposed on one side of the support plate 31.
Referring to fig. 6 and 7, during installation, the push rod 6 is rotated to abut against the side surface of the push block 62 and the middle rod 61, then the push sleeve 63 is rotated, the push sleeve 63 moves until the push block 62 is moved, the push sleeve 63 continues to rotate, the push sleeve 63 moves to the outside of the push block 62 through the push groove 631 until the push block 62 abuts against the inner wall of the push groove 631, at this time, the push sleeve 63 continues to rotate, the push sleeve 63 drives the push block 62 to move in the direction towards the support plate 31, the push block 62 drives the support rod 4 to move in the direction towards the support plate 2 through the push rod 6 while moving, so that the support rod 4 rotates on the connecting rod 51 and abuts against the support plate 2, the support rod 4 and the support plate 2 are kept in an abutting state, and the stability of the support plate 2 is improved.
Referring to fig. 6 and 7, the push block 62 is formed in an arc shape, and when the push block 62 abuts against the side surface of the intermediate lever 61, the center line of the push block 62 and the center line of the intermediate lever 61 are arranged on the same straight line, and the inner wall of the push block 62 abuts against the outer side of the intermediate lever 61, thereby increasing the contact area between the push block 62 and the intermediate lever 61 and improving the stability of the push block 62 during movement.
Referring to fig. 8 and 9, in order to facilitate installation, two rotating rings 52 are disposed at the center of the installation groove 5, the two rotating rings 52 are arranged in a direction along the length of the middle rod 61, the rotating rings 52 are rotatably disposed in the installation groove 5, two groups of four connecting rods 51 are disposed, the connecting rods 51 in each group are disposed in a crossed manner, the two groups of connecting rods 51 and the two rotating rings 52 are disposed in a one-to-one correspondence manner, and the connecting rods 51 in each group are disposed on the same straight line. When the installation, the accessible rotates connecting rod 51, packs up two sets of connecting rods 51 to carry it, when needs are installed, with connecting rod 51 rotate expand can, promote the efficiency of construction.
Referring to fig. 9 and 10, in order to facilitate the rotation of the connecting rod 51 to a designated position, two limiting blocks 53 are provided in the mounting groove 5, the cross section of the limiting block 53 perpendicular to the central line direction of the supporting plate 31 is fan-shaped, the central angle is set to 90 degrees, the two limiting blocks 53 are symmetrically arranged around the central line of the supporting plate 31, the rotating ring 52 is arranged between the two limiting blocks 53, and the connecting rod 51 is arranged between the two limiting blocks 53. When the installation, install supporting disk 31 on a backplate 2 after, rotate connecting rod 51 to with the side butt of stopper 53, two adjacent connecting rod 51 mutually perpendicular this moment, a plurality of connecting rods 51 rotate respectively to and a plurality of backplate 2 one-to-one sets up simultaneously, then rotate the push away cover 63 with bracing piece 4 and the butt of backplate 2, support backplate 2.
Referring to fig. 10 and 11, in order to further improve the stability of the support rod 4, two placement grooves 54 are formed in the inner wall of the mounting groove 5 on the side close to the support plate 2, the two placement grooves 54 are respectively arranged between the limit blocks 53, the placement grooves 54 are also arranged in a fan shape, a top block 7 is arranged in the placement grooves 54, the top block 7 is arranged in the placement grooves 54 in a sliding manner along the central line direction of the support plate 31, the top block 7 and the limit blocks 53 are arranged at intervals, a gap between the two corresponds to the connecting rod 51, after the connecting rod 51 rotates to abut against the limit blocks 53, the top block 7 is moved into the mounting groove 5, the top block 7 and the connecting rod 51 abut against one side of the limit blocks 53, the connecting rod 51 is fixed, so that the connecting rod 51 keeps the unfolded state, the phenomenon that the support rod 4 is rotationally deviated when supporting is reduced, and the stability of the support rod 4 is improved.
Referring to fig. 10 and 11, a through groove 8 is formed in one side of the supporting plate 31 close to the intermediate rod 61, the through groove 8 is formed along the central line direction of the supporting plate 31, the through groove 8 is communicated with the placing groove 54, the intermediate rod 61 extends into the through groove 8, the intermediate rod 61 is slidably arranged in the through groove 8, a fixing rod 71 is arranged at one end of the intermediate rod 61 close to the placing groove 54, the intermediate rod 61 is connected with the top block 7 through the fixing rod 71, namely, the top block 7 can be driven by the intermediate rod 61 to move, and the position of the top block 7 can be adjusted. When rotating and pushing away cover 63 and drive bracing piece 4 and rotate, after bracing piece 4 and supporting plate 2 butt, ejector pad 62 can't continue to move, continues to rotate and pushes away cover 63, pushes away cover 63 and drives intermediate lever 61 and move relative supporting disk 31, and intermediate lever 61 drives kicking block 7 and moves to and connecting rod 51 butt, restricts connecting rod 51.
Referring to fig. 10 and 11, in order to fold the connecting rod 51 when necessary, the top block 7 moves into the placement groove 54, a mounting sleeve 9 is disposed on one side of the support plate 31 away from the support guard plate 2, the mounting sleeve 9 is sleeved on the outer portion of the intermediate rod 61, the intermediate rod 61 is slidably disposed on the mounting sleeve 9, a reset piece 91 is disposed in the mounting sleeve 9, the reset piece 91 can be a spring, the spring is sleeved on the outer portion of the intermediate rod 61, one end of the spring is connected with the support plate 31, the other end of the spring is connected with the intermediate rod 61, and the spring is used for driving the intermediate rod 61 to move in a direction towards the placement groove 54, so that when necessary, the top block 7 is kept in the placement groove 54, so as to rotate the connecting rod 51 to a folded state.
The implementation principle of the application is as follows: set up backplate 2 in the side of diaphragm wall body 11, and set up down tube 32 and supporting disk 31 in foundation ditch body 1 and support supporting plate 2, set up bracing piece 4 simultaneously on supporting disk 31, through bracing piece 4 and 2 butts of supporting plate, promote the stability of supporting plate 2, it is more stable to make the cooperation between backplate 2 and the diaphragm wall body 11, support foundation ditch body 1 lateral wall jointly through diaphragm wall body 11 and supporting plate 2, promote the stability of whole supporting.
The application also discloses a construction method of the supporting structure for the deep foundation pit excavation of the oblique supporting pile combined type steel continuous wall, and the supporting structure for the deep foundation pit excavation of the oblique supporting pile combined type steel continuous wall is adopted.
The construction method of the supporting structure for excavating the deep foundation pit of the oblique supporting pile combined type steel continuous wall comprises the following steps:
s1, sequentially mounting a supporting and protecting plate 2 on the supporting and protecting plate 2 through an anchor rod 21;
s2, placing the supporting disc 31 in the clamping groove 22 through the abdicating groove 23, and then fixing the base 33 at the bottom of the foundation pit body 1;
s3, the supporting rod 4 is rotated until the connecting rod 51 is abutted against the limiting block 53, and then the push rod 6 is rotated to rotate the push block 62 to be abutted against the side face of the middle rod 61;
s4, rotating the push sleeve 63, wherein the push sleeve 63 drives the push block 62 to move, and simultaneously drives the support rod 4 to abut against the side face of the support plate 2;
s5, the push sleeve 63 continues to rotate, the push sleeve 63 drives the middle rod 61 to move, the middle rod 61 drives the ejector block 7 to abut against the side face of the connecting rod 51, and the connecting rod 51 is fixed;
s6, the pushing sleeve 63 is rotated again, the ejector block 7 abuts against the inner wall of the mounting groove 5, the middle rod 61 stops moving, and the pushing sleeve 63 continues to drive the push rod 6 and the support rod 4 to rotate, so that the support rod 4 and the supporting plate 2 are abutted tightly to support the supporting plate 2.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. Supporting construction of oblique brace stake combination shaped steel diaphragm wall deep basal pit excavation, include foundation ditch body (1) and pour diaphragm wall body (11) in foundation ditch body (1) lateral wall, its characterized in that: the diaphragm wall body (11) is close to inside one side of foundation ditch body (1) and is provided with a plurality of backplate (2), be provided with stock (21) on backplate (2), stock (21) are passed backplate (2) and are inserted and establish in diaphragm wall body (11), and are a plurality of backplate (2) evenly arrange on foundation ditch body (1) lateral wall, be provided with supporting component (3) in foundation ditch body (1), supporting component (3) are including supporting disk (31), down tube (32) and base (33), base (33) are fixed and are set up with supporting plate (2) interval on the bottom of foundation ditch body (1), supporting disk (31) set up the edge of four adjacent backplate (2), supporting disk (31) and supporting plate (2) butt, the both ends of down tube (32) are connected with supporting disk (31) and base (33) respectively and are used for supporting disk (31) and support.
2. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 1, characterized in that: be provided with four bracing pieces (4) on supporting disk (31), four bracing piece (4) are located the interval around the center of supporting disk (31) and are set up, four bracing piece (4) set up with four adjacent backplate (2) one-to-one respectively, bracing piece (4) and backplate (2) butt are used for supporting backplate (2).
3. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 2, characterized in that: draw-in groove (22) have been seted up to the edge of propping up backplate (2), supporting disk (31) card is established in draw-in groove (22), mounting groove (5) have been seted up to the side of supporting disk (31), one side lateral wall that mounting groove (5) are close to foundation ditch body (1) and supporting plate (2) are close to foundation ditch body (1) inside one side on the coplanar, bracing piece (4) set up in mounting groove (5), bracing piece (4) and mounting groove (5) inner wall butt.
4. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 3, characterized in that: the utility model discloses a foundation ditch, including mounting groove (5), bracing piece (4), bracing piece (51), support disc (4) and connecting rod (51), the one end that bracing piece (4) deviates from connecting rod (51) rotates and is provided with push rod (6), bracing piece (4) and connecting rod (51) rotate to be connected, the center department of one side that the supporting disc (31) deviates from foundation ditch body (1) is provided with intermediate lever (61), intermediate lever (61) perpendicular to supporting disc (31) set up, the one end that deviates from bracing piece (4) on push rod (6) is provided with ejector pad (62), threaded groove (611) has been seted up along its length direction on intermediate lever (61), the outside screw-thread fit of intermediate lever (61) has pushed away cover (63), push away cover (63) and have been offered and have been pushed away groove (631) near one side of supporting disc (31), push away cover (63) through pushing away groove (631) and push pad (62) cooperation and be used for pushing away the ejector pad (62) and move on intermediate lever (61).
5. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 4, characterized in that: the pushing block (62) is arc-shaped, and the inner side of the pushing block (62) is abutted against the side surface of the middle rod (61).
6. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 4, characterized in that: the center department of mounting groove (5) rotates and is provided with two swivel beckets (52), two the pivot of swivel beckets (52) and the central line coincidence of mounting groove (5), four connecting rod (51) are two sets of respectively, every group connecting rod (51) cross arrangement, and are two sets of connecting rod (51) and two swivel beckets (52) one-to-one set up, every group connecting rod (51) set up on same straight line, the side of connecting rod (51) and swivel beckets (52) is connected.
7. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 6, characterized in that: two limiting blocks (53) are arranged in the mounting groove (5), the limiting blocks (53) are fan-shaped, the central angle of each limiting block (53) is 90 degrees, the two limiting blocks (53) are symmetrically arranged around the central line of the supporting disc (31), the rotating ring (52) is arranged between the two limiting blocks (53), and the connecting rod (51) is arranged between the two limiting blocks (53).
8. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 7, characterized in that: the inner wall of one side, close to the supporting and protecting plate (2), of the mounting groove (5) is provided with two placing grooves (54), the two placing grooves (54) correspond to gaps between the two limiting blocks (53), a top block (7) is arranged in each placing groove (54), the top block (7) is arranged in each placing groove (54) in a sliding mode along the direction of the center line of the corresponding supporting plate (31), and the top block (7) slides to the outside of the corresponding placing groove (54) and is abutted to the corresponding connecting rod (51) to fix the corresponding connecting rod (51).
9. The supporting structure for excavation of the deep foundation pit of the oblique support pile combined type steel continuous wall according to claim 8, characterized in that: the supporting disc is characterized in that a through groove (8) is formed in one side, close to the middle rod (61), of the supporting disc (31), the through groove (8) is formed in the center line direction of the supporting disc (31), the through groove (8) is communicated with the placing groove (54), the middle rod (61) is arranged in the through groove (8) in a sliding mode, a fixing rod (71) is arranged at the end portion of the middle rod (61), and the middle rod (61) is connected with the jacking block (7) through the fixing rod (71).
10. The construction method of the supporting structure for the deep foundation pit excavation of the oblique supporting pile combined type steel continuous wall is characterized by comprising the following steps of:
s1, sequentially mounting a supporting and protecting plate (2) on the supporting and protecting plate (2) through an anchor rod (21);
s2, placing the supporting disc (31) in the clamping groove (22) through the abdicating groove (23), and then fixing the base (33) at the bottom of the foundation pit body (1);
s3, the supporting rod (4) is rotated until the connecting rod (51) is abutted against the limiting block (53), and then the push rod (6) is rotated to rotate the push block (62) to be abutted against the side face of the middle rod (61);
s4, rotating the push sleeve (63), wherein the push sleeve (63) drives the push block (62) to move, and simultaneously drives the support rod (4) to abut against the side face of the support plate (2);
s5, the push sleeve (63) continues to rotate, the push sleeve (63) drives the middle rod (61) to move, and the middle rod (61) drives the ejector block (7) to be abutted against the side face of the connecting rod (51) to fix the connecting rod (51);
s6, the pushing sleeve (63) is rotated again, the ejector block (7) is abutted against the inner wall of the mounting groove (5), the intermediate rod (61) stops moving, the pushing sleeve (63) continues to drive the push rod (6) and the support rod (4) to rotate, the support rod (4) is abutted against the support plate (2) tightly, and the support plate (2) is supported.
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| CN202210862257.2A CN115198763B (en) | 2022-07-20 | 2022-07-20 | Supporting structure of inclined supporting pile combined type steel continuous wall deep foundation pit and construction method |
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| CN115198763B (en) | 2024-05-07 |
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