CN114396051A - Construction method for foundation pit slope excavation and supporting structure - Google Patents
Construction method for foundation pit slope excavation and supporting structure Download PDFInfo
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- CN114396051A CN114396051A CN202210203854.4A CN202210203854A CN114396051A CN 114396051 A CN114396051 A CN 114396051A CN 202210203854 A CN202210203854 A CN 202210203854A CN 114396051 A CN114396051 A CN 114396051A
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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
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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
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
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Abstract
The application relates to the field of foundation pit side slopes, in particular to a construction method for foundation pit side slope excavation and supporting structures. A construction method for foundation pit slope excavation and supporting structures comprises the following steps: step 1): performing primary foundation pit excavation in a specified area to reach a specified depth; step 2): a walking board for passing is arranged along the slope surface, and the walking board is fixed in the slope soil body through a fixing component; step 3): arranging a flexible side slope protective net between adjacent walking plates; step 4): arranging a line needing piling and supporting in the first foundation pit; step 5): driving a support pile according to the laid thread; step 6): placing the manufactured reinforcement cage into a pile core of the support pile, and grouting the pile core; step 7): and excavating and transporting away the earth in the foundation pit, and then carrying out multiple times of deep excavation until the specified depth is excavated. This application has the effect of being convenient for construction worker to remove between the ground in the foundation ditch.
Description
Technical Field
The application relates to the field of foundation pit side slopes, in particular to a construction method for foundation pit side slope excavation and supporting structures.
Background
Under the background of rapid development of economy in China, the construction industry also has leap-type development. Because China has less land and more people, people occupy less land than l/10 of the land occupied by people all over the world, the land is saved, multiple layers and high layers are properly developed, the land is developed to the air and underground, and the land is an important way for solving the problem of land resource shortage in China.
Excavation and support of the foundation pit are extremely important when the development to the underground is desired. 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. When a building is excavated deeply and nearby, the method of supporting the foundation pit wall, the method of protecting the wall by spraying concrete, the method of interlocking a large foundation pit even by adopting an underground continuous wall and column type cast-in-situ bored piles and the like can be used for preventing the outside soil layer from collapsing.
In the operation process, a plurality of working procedures are required to be performed, such as excavation, pouring, concrete spraying, concrete curing and the like, so that the construction needs to take a long time, and the construction period is long. The construction worker needs to frequently move from the ground to the foundation pit for operation every day, or operates on the side slope of the foundation pit, and if the crane is used for lifting people every time, the operation is very inconvenient. Therefore, there is a strong need to find a simple and convenient way for the construction worker to move from the ground into the foundation pit.
Disclosure of Invention
In order to facilitate the movement of construction workers from the inside of a foundation pit to the ground, the application provides a construction method for foundation pit slope excavation and supporting structures.
The construction method for the foundation pit slope excavation and supporting structure adopts the following technical scheme:
a construction method for foundation pit slope excavation and supporting structures comprises the following steps:
step 1): performing primary foundation pit excavation in a specified area to reach a specified depth;
step 2): a walking board for passing is arranged along the slope surface, and the walking board is fixed in the slope soil body through a fixing component;
step 3): arranging a flexible side slope protective net between adjacent walking plates;
step 4): arranging a line needing piling and supporting in the first foundation pit;
step 5): driving a support pile according to the laid thread;
step 6): placing the manufactured reinforcement cage into a pile core of the support pile, and grouting the pile core;
step 7): and excavating and transporting away the earth in the foundation pit, and then carrying out multiple times of deep excavation until the specified depth is excavated.
Through adopting above-mentioned technical scheme, through setting up the walking board at domatic, when construction worker need move to the foundation ditch in from ground, utilize the walking board to walk to the foundation ditch in can. The excavation of the foundation pit needs to be performed deep excavation for many times, and when a next layer is excavated, a new walking plate is installed again and is connected with the walking plate of the previous layer in a seamless mode. Adopt the technical scheme that this application provided, low cost not only, the effect is showing in addition, and the construction back is accomplished in the later stage, can also reform transform into supply pedestrians to use such as stair on original walking board basis.
Preferably, the fixing component comprises an outer barrel, an inner rod and a plurality of locking rods, the outer barrel is fixedly connected with the walking plate, the inner rod is in threaded connection with the outer barrel, and the inner rod moves along the direction close to or far away from the side slope; the end part of the inner rod close to the side slope soil body is provided with a guide surface; a plurality of locking rods are arranged in the outer barrel; in the initial state, one end of the locking rod is abutted against the outer wall of the corresponding guide surface of the inner rod, and the locking rod is positioned in the outer cylinder at the moment; when the locking device is in a locking state, one end of the locking rod is abutted against the outer wall of the non-guiding surface of the inner cylinder, and at the moment, part of the rod body of the locking rod extends out of the outer cylinder and is inserted into the slope soil body.
Through adopting above-mentioned technical scheme, at first the walking board is the flatly-laid on the slope surface of side slope, then rotate interior pole again, make interior pole towards the direction removal that is close to the slope surface of side slope, the locking lever of original with interior pole spigot surface outer wall contact becomes because the removal of interior pole and the outer wall butt of interior pole non-spigot surface to become the state of stretching out the urceolus, and insert the side slope soil body in, the side slope soil body produces extruded power to the locking lever that stretches out, makes the walking board firm the installation on the side slope.
The outer cylinder can be arranged to penetrate through the side face of the walking plate, and the end part of the outer cylinder can be in a conical shape, so that when the walking plate is paved on a side slope, the outer cylinder is inserted into the side slope, and the connection strength of the walking plate and the side slope is improved; then, the locking rod is used for further improving the strength and is more stable.
Preferably, be provided with a plurality of connecting seat on the flexible side slope protection net, the connecting seat can be dismantled with fixed subassembly through connecting the rope and be connected.
By adopting the technical scheme, the arranged flexible side slope protective net can be used for reducing the situation that stones and soil on the slope surface of the inclined side slope slide off, and the construction safety is further improved.
Preferably, one end of the connecting rope is fixedly connected to the outer wall of the inner rod, the other end of the connecting rope is provided with a clamping piece, and the clamping piece can be detachably connected to the connecting seat.
Connect rope and joint spare earlier and couple together, owing to connect rope and interior pole fixed connection, so at the in-process of pole in the rotation of follow-up fixed running board, connect the rope and twine on interior pole owing to rotating to play the taut state of flexible side slope protection network, further improved the guard action that flexible side slope protection network can play. Through adopting above-mentioned technical scheme, when strengthening walking board and side slope soil body joint strength, can also expand flexible side slope protection network more thoroughly, simplified the process of installation greatly, convenient and fast.
Preferably, the clamping piece comprises a base rod and an insertion block, wherein one end of the base rod is connected with the connecting rope, the insertion block is conical, and the bottom surface of the insertion block is connected with the other end of the base rod;
the connecting seat is provided with a limiting hole, the wall of the limiting hole is provided with a plurality of matching blocks, the side surfaces of the matching blocks, which are close to each other, are provided with inclined surfaces, and the connecting seat and the matching blocks have deformation capacity;
when being in the locking state, insert the piece and wear to establish the region that a plurality of cooperation piece encloses, insert piece bottom surface and cooperation piece and be close to the side butt of the slope soil body, basic pole joint is in the region that cooperation piece encloses.
Through adopting above-mentioned technical scheme, when needs will connect the rope, the connecting seat couples together, insert the joint spare in the cooperation piece encloses the region of establishing, insert the piece and strut the cooperation piece and pass the cooperation piece, the bottom surface and the cooperation piece that insert the piece are close to the side contact of the side slope soil body, just accomplished the connection of connecting rope and connecting seat this moment, even when owing to interior pole rotation and pulling connection rope, connect the rope and also can't break away from the connecting seat, can take up flexible side slope protection network when having guaranteed the pulling connection rope.
Preferably, the clamping piece further comprises a limiting ring, and the limiting ring is sleeved on the outer wall of the base rod; when the side face of the limiting ring is in a locking state, the side face of the limiting ring is abutted against the side face of the connecting seat far away from the side slope soil body.
Through adopting above-mentioned technical scheme, the position of inserting the piece has further been injectd to the spacing ring, inserts the piece and can't break away from the connecting seat easily to the joint strength who connects rope and connecting seat has been improved.
Preferably, the side of the walking board is provided with a plurality of pull ropes, and the pull ropes are connected with the flexible slope protective net.
Because the four corners of the flexible side slope protection net are pulled by the walking plates, the flexible side slope protection net is easy to deform, so that a gap is generated, and the side slope soil body at the gap is not covered by the flexible side slope protection net cage, sand and stones and the like are easy to slip off.
By adopting the technical scheme, the pull rope is also arranged at the position where the flexible side slope protective net deforms, so that the flexible side slope protective net is unfolded more thoroughly, and the construction safety is further improved. The arrangement of the pull rope can also effectively reduce the burden of the connecting rope, and is beneficial to prolonging the service life of the walking board and the flexible side slope protective net.
Preferably, the side surface of the walking board is provided with a plurality of convex blocks, and the pull rope is sleeved on the corresponding convex blocks.
Through adopting above-mentioned technical scheme, after the installation of completion walking board, flexible side slope protection network, according to actual conditions adjustment stay cord's length, the accessible twines the stay cord at corresponding lug in order to shorten the length of stay cord to better taut flexible side slope protection network.
Preferably, the walking board can be dismantled and be connected with a plurality of diaphragms, the diaphragm side offer with the spread groove of lug looks adaptation, the lug joint in the spread groove that corresponds.
Through adopting above-mentioned technical scheme, accomplish being connected of stay cord and flexible side slope protection network, after adjusting stay cord length, can also set up the diaphragm that the constructor of being convenient for stood, trampled on the running board, the constructor operation of further being convenient for. And the arrangement of the transverse plate further improves the connection strength between the pull rope and the convex block, and the pull rope is not easy to separate from the convex block.
Preferably, the outer cylinder is provided with a blocking sheet corresponding to the extending part of the locking rod.
During transportation, the road is often bumpy, and the locking rod can be shaken out of the outer barrel due to bumping.
By adopting the technical scheme, the blocking piece has certain strength, the blocking piece cannot be punctured by slight touch, and when a constructor rotates the inner rod, the force applied by the inner rod to the locking rod can drive the locking rod to puncture the blocking piece, so that the phenomenon that the locking rod is separated from the outer barrel under unnecessary conditions is reduced.
1. Through setting up the walking board at domatic, when the constructor need move to in the foundation ditch from ground, utilize the walking board to walk in the foundation ditch can. The excavation of the foundation pit needs to be performed deep excavation for many times, and when a next layer is excavated, a new walking plate is installed again and is connected with the walking plate of the previous layer in a seamless mode. Adopt the technical scheme that this application provided, low cost not only, the effect is showing in addition, and the construction back is accomplished in the later stage, can also reform transform into supply pedestrians to use such as stair on original walking board basis.
2. Connect rope and joint spare earlier and couple together, owing to connect rope and interior pole fixed connection, so at the in-process of pole in the rotation of follow-up fixed running board, connect the rope and twine on interior pole owing to rotating to play the taut state of flexible side slope protection network, further improved the guard action that flexible side slope protection network can play. When the connection strength of the walking board and the side slope soil body is enhanced, the flexible side slope protective net can be unfolded more thoroughly, the installation process is greatly simplified, and the method is convenient and fast.
3. The pull rope is also arranged at the position where the flexible side slope protective net deforms, so that the flexible side slope protective net is unfolded more thoroughly, and the construction safety is further improved. The arrangement of the pull rope can also effectively reduce the burden of the connecting rope, and is beneficial to prolonging the service life of the walking board and the flexible side slope protective net.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a cross-sectional view of the fixing assembly and other parts of the embodiment of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is a sectional view of the connecting holder, the clip and the like according to the embodiment of the present application.
Fig. 5 is a cross section of the cross plate and the side slope in the matching state of the embodiment of the application.
Description of reference numerals: 1. side slope; 2. a walking board; 21. a bump; 3. a fixing assembly; 31. an outer cylinder; 32. an inner rod; 33. a locking lever; 4. a flexible side slope protective net; 5. a blocking sheet; 6. a connecting seat; 61. a limiting hole; 62. a matching block; 621. an inclined surface; 7. connecting ropes; 8. a clamping piece; 81. a limiting ring; 82. a base rod; 83. inserting a block; 9. a transverse plate; 91. connecting grooves; 10. and pulling a rope.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a construction method for foundation pit slope excavation and supporting structures, which comprises the following steps:
step 1): according to the planning of a drawing, a first excavation of the foundation pit is carried out by utilizing an excavator in a specified area, the dynamic management of the excavation of the foundation pit is carried out by utilizing the change rule of the displacement of a soil body in the excavation process of the foundation pit firstly in the middle and then at two sides, the informationized construction is carried out by adopting a monitoring and measuring means, the deformation of the foundation pit is ensured to be within the design allowable range, and the earthwork is excavated to the depth of-4 m.
Step 2): because the shovel teeth of the excavator are used for excavating and loosening earthwork, the machine is not easy to master the gradient, and therefore, manual slope repairing is needed to enable the side slope 1 to reach the specified gradient.
Step 3): a plurality of walking plates 2 for workers to pass are arranged along the slope surface, and the walking plates 2 are inserted into soil on the slope surface of the side slope 1 through fixing components 3.
Step 4): a flexible side slope protective net 4 is arranged between the adjacent walking plates 2, and the flexible side slope protective net 4 is tightened through a fixing component 3.
Step 5): and placing lines needing piling and supporting around the first foundation pit.
Step 6): and (4) according to the laid line, adopting a hammering method to closely attach and drive into the support pile. In this embodiment, the fender pile is the PHC tubular pile, and the clear distance between the PHC tubular pile is 90mm, and the single row setting.
Step 7): after the PHC tubular pile is driven into the pile core, the manufactured reinforcement cage is placed into the pile core of the PHC tubular pile, and concrete is filled into the pile core for grouting.
Step 8): according to actual conditions, the earthwork in the foundation pit is excavated and transported away by using a small excavator, and multiple times of deep excavation is carried out until the specified depth is excavated.
Referring to fig. 1 and 2, one side surface of the walking board 2 is abutted against the slope surface of the side slope 1, and the other side surface of the walking board 2 is used for workers to walk. The walking board 2 is provided with the mounting hole that runs through the side all around, and the mounting hole and fixed subassembly 3 looks adaptation, fixed subassembly 3 outer wall fixed connection and mounting hole pore wall, fixed subassembly 3 passes from the mounting hole, then inserts in the soil body.
Referring to fig. 2, specifically, the fixing assembly 3 includes an outer cylinder 31, an inner rod 32 and a plurality of locking rods 33, and the end of the outer cylinder 31 inserted into the slope soil is tapered. Be provided with in the urceolus 31 and supply interior pole 32 to move towards the chamber that holds that is close to or keeps away from slope 1 slope soil body direction, interior pole 32 part shaft is outside urceolus 31, and other poles of the body threaded connection of interior pole 32 hold the intracavity. The end part of the inner rod 32 close to the soil body of the side slope 1 is provided with a guide surface which is conical, and the sharp end part of the inner rod 32 extends towards the direction close to the soil body of the slope surface. The wall of the outer cylinder 31 is provided with a plurality of locking holes, one locking hole corresponds to one locking rod 33, and the locking rod 33 penetrates through the corresponding locking hole. When the locking rod is in an initial state, one end of the locking rod 33 abuts against the outer wall of the sharp end of the inner rod 32, the other end of the locking rod 33 is lapped on the wall of the locking hole, but the locking rod 33 does not just penetrate out of the locking hole. When the locking device is in a locking state, one end of the locking rod 33 is abutted against the outer wall of the rod body of the inner rod 32, and the other end of the locking rod 33 penetrates through the locking hole and is inserted into a slope soil body.
During transportation, there may be a slight jolt, and the locking lever 33 may be shaken out of the outer cylinder 31 due to the jolt. In order to reduce the occurrence of the situation, the blocking piece 5 is arranged on the wall of the outer cylinder 31 corresponding to the locking hole, the blocking piece 5 has certain strength, and the blocking piece 5 can be pierced only when the inner rod 32 is used for driving the locking rod 33 to move.
Referring to fig. 3 and 4, a plurality of connecting seats 6 are fixedly connected to the flexible side slope protection net 4, and the connecting seats 6 are detachably connected to the fixing assembly 3 through connecting ropes 7. Wherein one end fixed connection in interior pole 32 (refer to fig. 2) outer wall of connecting rope 7, the other end fixedly connected with joint spare 8 of connecting rope 7, joint spare 8 can be dismantled and connect in connecting seat 6. That is, the connection ropes 7 are pulled from the four corners of the flexible side slope protection net 4.
Referring to fig. 4, the clip 8 includes a limiting ring 81, a base rod 82 and an insertion block 83, wherein one end of the base rod 82 is fixedly connected to the end of the connection rope 7, the other end of the base rod 82 is fixedly connected to the side of the insertion block 83, the insertion block 83 is conical, and the bottom of the insertion block 83 is connected to the base rod 82. The outer wall of the base rod 82 is sleeved with the limiting ring 81, and the limiting ring 81 is fixedly connected to the base rod 82.
A limiting hole 61 is formed in the side surface of the connecting seat 6, a plurality of matching blocks 62 are fixedly connected to the hole wall of the limiting hole 61 along the circumferential direction, inclined surfaces 621 are arranged on the side surfaces, close to each other, of the matching blocks 62, and the cross sectional area of an area enclosed among the matching blocks 62 is gradually reduced along the direction close to the soil of the side slope 1; connecting seat 6, cooperation piece 62 have deformability, and the regional confession joint spare 8 joint that encloses between the cooperation piece 62. When needs with connecting rope 7, connecting seat 6 interlocking mutually regularly, insert the piece 83 and strut behind a plurality of cooperation piece 62, pass the region that cooperation piece 62 encloses and establish, then cooperation piece 62 resumes initial position, the bottom surface that inserts the piece 83 and cooperation piece 62 are close to the side butt of slope 1 soil, foundation rod 82 joint is in the region that cooperation piece 62 encloses, and the side butt of the side of spacing ring 81 and connecting seat 6 keep away from the side butt of slope 1 soil body.
Referring to fig. 3, when the flexible side slope protection net 4 is tensioned from four sides, the flexible side slope protection net 4 deforms, and part of the soil mass of the side slope 1 may not be shielded by the flexible side slope protection net 4, so that a plurality of pull ropes 10 are arranged on the side of the walking board 2, the end part of the pull rope 10 far away from the walking board 2 is also provided with a clamping piece 8, and the pull rope 10 is also connected with the flexible side slope protection net 4 through a connecting seat 6.
The side face, far away from the soil body of the side slope 1, of the walking plate 2 is fixedly connected with a plurality of convex blocks 21, and the convex blocks 21 are arranged at equal intervals along the length direction of the side edge, provided with the pull ropes 10, of the walking plate 2. After the flexible side slope protection net 4 is tightened by the connecting ropes 7, the pull ropes 10 are sleeved on the corresponding bumps 21 to shorten the lengths of the pull ropes 10, so that the flexible side slope protection net 4 is better unfolded, and the soil body of the side slope 1 is protected, and the soil body sliding is reduced.
Referring to fig. 3 and 5, after the connection between the pulling rope 10 and the protrusion 21 is completed, a plurality of transverse plates 9 for facilitating the walking of the construction worker may be further disposed on the walking plate 2. The lateral side of the transverse plate 9 is provided with a plurality of connecting grooves 91 matched with the protruding blocks 21, and the protruding blocks 21 are clamped in the corresponding connecting grooves 91, so that the transverse plate 9 is in a horizontal state. The lateral surface of the transverse plate 9 corresponding to the connecting groove 91 is connected with a bolt in a threaded manner, the bolt is connected with the corresponding lug 21 in a threaded manner, and the transverse plate 9 is further fixed on the traveling plate 2 by using the bolt.
The implementation principle of the construction method for foundation pit slope excavation and supporting structure in the embodiment of the application is as follows: in the process of excavating a side slope 1, a walking board 2 and a flexible side slope protection net 4 are laid, the flexible side slope protection net 4 is preliminarily fixed by utilizing a connecting rope 7 and a pull rope 10, the walking board 2 is further fixed in the soil body of the side slope 1 by rotating an inner rod 32, and the flexible side slope protection net 4 is tightened at the same time. And then according to the actual situation, the pulling ropes 10 are wound on the corresponding convex blocks 21, so that the flexible side slope protective net 4 is unfolded more completely. Finally, the transverse plate 9 is connected with the convex block 21, the transverse plate 9 is fixed by using bolts, and a worker can step on the transverse plate 9 to move the transverse plate 9 conveniently.
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. A construction method for foundation pit slope excavation and supporting structures is characterized by comprising the following steps:
step 1): performing primary foundation pit excavation in a specified area to reach a specified depth;
step 2): a walking board (2) for passing is arranged along the slope surface, and the walking board (2) is fixed in the soil body of the side slope (1) through a fixing component (3);
step 3): a flexible side slope protective net (4) is arranged between the adjacent walking plates (2);
step 4): arranging a line needing piling and supporting in the first foundation pit;
step 5): driving a support pile according to the laid thread;
step 6): placing the manufactured reinforcement cage into a pile core of the support pile, and grouting the pile core;
step 7): and excavating and transporting away the earth in the foundation pit, and then carrying out multiple times of deep excavation until the specified depth is excavated.
2. The method of excavating and supporting a foundation pit slope according to claim 1, wherein: the fixing component (3) comprises an outer barrel (31), an inner rod (32) and a plurality of locking rods (33), the outer barrel (31) is fixedly connected with the walking plate (2), the inner rod (32) is in threaded connection with the outer barrel (31), and the inner rod (32) moves in the direction close to or far away from the side slope (1); the end part of the inner rod (32) close to the soil body of the side slope (1) is provided with a guide surface; a plurality of locking rods (33) are arranged in the outer cylinder (31); in the initial state, one end of the locking rod (33) is abutted against the outer wall of the inner rod (32) at the corresponding guide surface, and the locking rod (33) is positioned in the outer cylinder (31); when the locking device is in a locking state, one end of the locking rod (33) is abutted against the outer wall of the non-guiding surface of the inner cylinder, and at the moment, part of the rod body of the locking rod (33) extends out of the outer cylinder (31) and is inserted into the soil body of the slope (1).
3. The method of excavating and supporting a foundation pit slope according to claim 2, wherein: a plurality of connecting seats (6) are arranged on the flexible side slope protective net (4), and the connecting seats (6) are detachably connected with the fixed component (3) through connecting ropes (7).
4. The method of excavating and supporting a foundation pit slope according to claim 3, wherein: wherein one end fixed connection in interior pole (32) outer wall of connecting rope (7), the other end of connecting rope (7) is provided with joint spare (8), joint spare (8) can be dismantled and connect in connecting seat (6).
5. The method of excavating and supporting a foundation pit slope according to claim 4, wherein: the clamping piece (8) comprises a base rod (82) and an insertion block (83), one end of the base rod (82) is connected with the connecting rope (7), the insertion block (83) is conical, and the bottom surface of the insertion block (83) is connected with the other end of the base rod (82);
the connecting base (6) is provided with a limiting hole (61), the hole wall of the limiting hole (61) is provided with a plurality of matching blocks (62), the side surfaces of the matching blocks (62) close to each other are provided with inclined surfaces (621), and the connecting base (6) and the matching blocks (62) have deformation capacity;
when the locking device is in a locking state, the insertion block (83) penetrates through the area surrounded by the matching blocks (62), the bottom surface of the insertion block (83) is abutted against the side surface, close to the soil body of the side slope (1), of the matching block (62), and the foundation rod (82) is clamped in the area surrounded by the matching blocks (62).
6. The method of excavating and supporting a foundation pit slope according to claim 1, wherein: the clamping piece (8) further comprises a limiting ring (81), and the limiting ring (81) is sleeved on the outer wall of the base rod (82); when the locking device is in a locking state, the side surface of the limiting ring (81) is abutted against the side surface of the connecting seat (6) far away from the soil body of the side slope (1).
7. The method of excavating and supporting a foundation pit slope according to claim 1, wherein: a plurality of pull ropes (10) are arranged on the side edge of the walking board (2), and the pull ropes (10) are connected with the flexible slope protective net (4).
8. The method of excavating and supporting a foundation pit slope according to claim 7, wherein: a plurality of convex blocks (21) are arranged on the side surface of the walking plate (2), and the corresponding convex blocks (21) are sleeved with the pull rope (10).
9. The method of excavating and supporting a foundation pit slope according to claim 8, wherein: the walking plate (2) is detachably connected with a plurality of transverse plates (9), the side edges of the transverse plates (9) are provided with connecting grooves (91) matched with the convex blocks (21), and the convex blocks (21) are clamped in the corresponding connecting grooves (91).
10. The method of excavating and supporting a foundation pit slope according to claim 2, wherein: the outer cylinder (31) is provided with a blocking sheet (5) corresponding to the extending part of the locking rod (33).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116289965A (en) * | 2023-03-23 | 2023-06-23 | 兰州有色冶金设计研究院有限公司 | Side slope support excavation construction method |
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| CN112747022A (en) * | 2020-12-31 | 2021-05-04 | 杭州美奇餐饮服务有限公司 | Anchor assembly for a fastener |
| CN213790487U (en) * | 2020-11-10 | 2021-07-27 | 常州安康机械有限公司 | Low-noise high-voltage pulse dust collector |
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| KR20090094971A (en) * | 2008-03-04 | 2009-09-09 | 깨뱉시스템주식회사 | Under ground top-down method |
| CN101892668A (en) * | 2010-07-30 | 2010-11-24 | 中铁四局集团第六工程有限公司 | Combined support-excavated geologically solutional deep foundation pit and construction method thereof |
| CN208455635U (en) * | 2018-07-12 | 2019-02-01 | 中建八局轨道交通建设有限公司 | Soil property basal plane ramp ladder |
| CN111648380A (en) * | 2020-06-19 | 2020-09-11 | 江苏麦廊新材料科技有限公司 | Convenient pin-connected panel foundation ditch safety bank protection |
| CN213790487U (en) * | 2020-11-10 | 2021-07-27 | 常州安康机械有限公司 | Low-noise high-voltage pulse dust collector |
| CN112747022A (en) * | 2020-12-31 | 2021-05-04 | 杭州美奇餐饮服务有限公司 | Anchor assembly for a fastener |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116289965A (en) * | 2023-03-23 | 2023-06-23 | 兰州有色冶金设计研究院有限公司 | Side slope support excavation construction method |
| CN116289965B (en) * | 2023-03-23 | 2023-08-18 | 兰州有色冶金设计研究院有限公司 | Side slope support excavation construction method |
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| CN114396051B (en) | 2022-11-08 |
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