CN116335151B - Construction method for excavating falling slope of space support frame after pre-grouting solidification of anchor cable - Google Patents
Construction method for excavating falling slope of space support frame after pre-grouting solidification of anchor cable Download PDFInfo
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- CN116335151B CN116335151B CN202310305260.9A CN202310305260A CN116335151B CN 116335151 B CN116335151 B CN 116335151B CN 202310305260 A CN202310305260 A CN 202310305260A CN 116335151 B CN116335151 B CN 116335151B
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000007711 solidification Methods 0.000 title claims description 14
- 230000008023 solidification Effects 0.000 title claims description 14
- 238000009412 basement excavation Methods 0.000 claims abstract description 25
- 239000002689 soil Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 55
- 230000002528 anti-freeze Effects 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 26
- 230000009471 action Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 230000006837 decompression Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method for excavating a falling slope of a space support frame after grouting and curing an anchor rope, which comprises the following steps: s1, arranging supporting components in a foundation pit after the pre-grouting curing anchor cable is fixed, and supporting and protecting inner walls at two sides of the foundation pit; s2, then, an operator enters a foundation pit to perform excavation construction; and S3, gradually falling the support assembly into the pit along with the formation of the pit, so that the pit wall can be supported and protected. The invention can realize that the supporting component falls along with the change of the excavation depth in the excavation process, so that the foundation pit slope can be protected, the safety of excavation operation is improved, the supporting component can be conveniently operated to fall without the disassembly of the supporting component below, the self-adaptive adjustment of the supporting component can be conveniently realized, meanwhile, the side slope soil body can be extruded when the supporting component is adjusted, the side slope soil body can be compacted, and the stability of the side slope during operation is improved.
Description
Technical Field
The invention belongs to the technical field of foundation pit construction, and particularly relates to a method for excavating a falling slope of a space support frame after grouting and curing an anchor rope.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. Before excavation, the excavation scheme is determined according to geological hydrologic data and the conditions of buildings nearby the site, and waterproof and drainage works are performed. The method of releasing the slope can be used for stabilizing the soil slope by the person with non-deep excavation, and the gradient of the soil slope is determined according to relevant construction engineering regulations.
Before carrying out foundation ditch degree of depth excavation in weak soil, need carry out the solidification anchor rope reinforcement of slip casting to it to promote the stability of foundation ditch side slope, after strengthening, but the degree of depth excavation foundation ditch, at the in-process of excavation, in order to promote the security, need carry out the support of foundation ditch side slope, need use the support frame subassembly, current support frame subassembly is inconvenient for carrying out the adjustment along with the deepening of excavation depth.
Therefore, the invention discloses a construction method for excavating a falling slope of a space support frame after grouting and curing an anchor rope, which is necessary to solve the problems.
Disclosure of Invention
The invention provides a construction method for excavating a falling slope of a space support frame after grouting and curing an anchor rope to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the construction method for excavating the falling side slope of the space support frame after the pre-grouting solidification of the anchor cable comprises the following steps:
s1, arranging supporting components in a foundation pit after the pre-grouting curing anchor cable is fixed, and supporting and protecting inner walls at two sides of the foundation pit;
s2, then, an operator enters a foundation pit to perform excavation construction;
s3, gradually falling the support component into the pit along with the formation of the pit, so that the pit wall can be supported and protected;
s4, after the excavation is completed, backfilling soil from the pit bottom after the construction of facilities in the pit is completed, gradually removing the support assembly from the bottom until the backfilling is completed, and then completely removing the support assembly.
Further, the supporting component includes a plurality of slope protection boards and montants, the outside of slope protection boards is equipped with the concatenation subassembly that can splice other slope protection boards, the back of slope protection boards is equipped with spacing, offer on the both sides inner wall of foundation ditch with spacing complex spacing groove, control adjacent connect through the horizontal pole between the montant, upper and lower be connected through the connecting piece between the montant, be located outside threaded connection of montant has the barrel, the inside slip of barrel is equipped with first piston, one side fixed mounting that the montant was kept away from to first piston has the push rod, one side that the first piston is close to the montant is equipped with first spring, the inside packing of barrel has the antifreeze, the outside of barrel is equipped with the pressure release subassembly that supplies antifreeze, the one end that the first piston was kept away from to the push rod is equipped with the squeezing piece, the front of slope protection boards has been offered with squeezing piece complex squeezing groove.
Further, the pressure release subassembly includes the backward flow case, the backward flow case is located the top of corresponding barrel, the bottom of backward flow case is close to one side of montant through fixed pipe fixed connection with the barrel, fixed pipe is linked together backward flow case and barrel, fixed pipe is equipped with the solenoid valve outward, the top of backward flow case is equipped with the controller with solenoid valve complex.
Further, the connecting piece is specifically set to be a lantern ring component, the inner side of the connecting piece and the upper and lower parts of the vertical rod are respectively provided with matched threads, and the connecting piece is arranged on the upper part of the vertical rod.
Further, the one end symmetry fixed mounting that the montant was kept away from to the push rod has the curb plate, one side middle part fixed mounting that the extruded piece is close to the push rod has the connecting rod, the outside fixed cover of connecting rod is equipped with the pivot, the pivot is rotated and is installed between a pair of curb plate, the one end of pivot is equipped with the restriction subassembly that restricts its turned angle, the inside of extruded piece is equipped with the cavity, be equipped with the subassembly of gaining weight that makes its weight increase for the water injection in the cavity on the montant.
Further, the limiting component comprises a limiting block, one end of the rotating shaft extends to the outside of the side plate and is fixedly connected with one end of the limiting block, an inclined plane is arranged at the top of the limiting block, the inclined plane faces the direction of the vertical rod, a baffle matched with the limiting block is fixedly arranged at the outer side of the side plate, the upper edge of the top of the limiting block is abutted against the baffle, and the rotating angle of the rotating shaft is 0-20 degrees.
Further, the weight increasing assembly comprises a hose communicated with the cavity, a cavity is formed in the vertical rod, a channel communicated with the bottom of the cavity is formed in the outer side of the vertical rod, one end of the hose, away from the extrusion block, is fixedly connected with the inner wall of the channel, a second piston is arranged in the cavity, a compression rod is fixedly mounted at the top of the second piston, a second spring is sleeved outside the compression rod, two ends of the second spring are fixedly connected with the top wall of the cavity and the second piston respectively, the top end of the compression rod extends out of the cavity, and water is filled in the cavity.
Further, the splice assembly includes the snap ring, the movable groove has been seted up to the positive lower part symmetry of slope protection board, the one end of snap ring is rotated through the loose axle and is installed in the movable groove, the one end fixed mounting that the loose axle was kept away from to the snap ring has the fixed plate, the screw that corresponds has been seted up on the front of fixed plate and slope protection board front, be connected through the cooperation of screw with the screw between fixed plate and the slope protection board, the positive upper portion symmetry fixed mounting of slope protection board has the inserted bar with snap ring complex.
The invention has the technical effects and advantages that:
1. according to the invention, the support component can fall along with the change of the excavation depth in the excavation process, so that the foundation pit slope can be protected, and the safety of excavation operation is improved;
2. the invention can facilitate the operation of the support assembly to fall without the disassembly of the support assembly below, and can facilitate the realization of the self-adaptive adjustment of the support assembly;
3. the invention can squeeze the side slope soil body when the supporting component is adjusted, so that the side slope soil body can be compacted, and the stability of the side slope during operation is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic structural view of a support assembly according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a construction method for excavating a falling slope of a space support frame after pre-grouting and curing of an anchor rope in an embodiment of the invention;
fig. 3 shows a structural schematic diagram of a construction method for excavating a falling slope of a space support frame after pre-grouting and curing of an anchor rope in an embodiment of the invention;
in the figure: 1. a foundation pit; 2. a slope protection plate; 3. a limit bar; 4. a vertical rod; 5. a cross bar; 6. a connecting piece; 7. a cylinder; 8. a first piston; 9. a push rod; 10. a first spring; 11. extruding blocks; 12. a reflow box; 13. a fixed tube; 14. an electromagnetic valve; 15. a side plate; 16. a connecting rod; 17. a limiting block; 18. a baffle; 19. a hose; 20. a second piston; 21. a compression bar; 22. a clasp; 23. a fixing plate; 24. a rod; 25. and a controller.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a construction method for excavating a falling slope of a space support frame after grouting and curing an anchor rope, which comprises the following steps:
s1, arranging supporting components in a foundation pit 1 after the pre-grouting curing anchor cable is fixed, wherein the supporting components are used for supporting and protecting inner walls at two sides of the foundation pit 1, namely side slopes, of the foundation pit 1, and the inner walls have a certain inclination angle;
s2, then an operator enters the foundation pit 1 to perform excavation construction;
s3, gradually falling the support component into the pit along with the formation of the pit, so that the pit wall can be supported and protected;
s4, after the excavation is completed, backfilling soil from the pit bottom after the construction of facilities in the pit is completed, gradually removing the support assembly from the bottom until the backfilling is completed, and then completely removing the support assembly.
As shown in fig. 1 to 3, the supporting component comprises a plurality of slope protection plates 2 and vertical rods 4, the outer part of the slope protection plates 2 is provided with splicing components capable of splicing the rest slope protection plates 2, the back surface of the slope protection plates 2 is provided with limiting strips 3, the inner walls of the two sides of a foundation pit 1 are provided with limiting grooves matched with the limiting strips 3, the left and right adjacent vertical rods 4 are connected through a cross rod 5, the upper and lower vertical rods 4 are connected through a connecting piece 6, the outer side of the outermost vertical rod 4 is in threaded connection with a cylinder 7, the inner part of the cylinder 7 is slidingly provided with a first piston 8, one side of the first piston 8, which is far away from the vertical rod 4, is fixedly provided with a push rod 9, one side of the first piston 8, which is close to the vertical rod 4, is provided with a first spring 10, the inner part of the cylinder 7 is filled with antifreeze, the outer part of the cylinder 7 is provided with a pressure releasing component for the antifreeze, one end of the push rod 9, which is far away from the first piston 8, is provided with an extruding block 11, when in use, the limit grooves are formed on the inner walls of the two sides of the foundation pit 1 after the pre-grouting and solidification of the anchor cable are fixed, the limit strips 3 on the slope protection plate 2 are placed in the limit grooves, the limit grooves are continuously formed along with the downward digging of the foundation pit 1, the slope protection plates 2 on the inner walls of the two sides of the foundation pit 1 are installed, the left and right adjacent vertical rods 4 are connected through the cross rods 5, the vertical rods 4 are connected with the cross rods 5 through threads, the cylinder bodies 7 are connected with the outermost vertical rods 4 through threads, the assembled vertical rods 4, the cross rods 5 and the cylinder bodies 7 are placed in the foundation pit 1, the extrusion blocks 11 on the two sides are respectively positioned in the corresponding extrusion grooves, the first springs 10 at the moment are compressed to be in a deformation state, the generated counter force can push the first pistons 8, the push rods 9, the extrusion blocks 11 and the slope protection plates 2 to abut against each other, antifreeze in the cylinder bodies 7 is full, the pressure release components are closed, at this time, the antifreeze in the cylinder 7 cannot be decompressed, at this time, the first piston 8, the push rod 9 and the extrusion block 11 cannot move towards the direction close to the vertical rod 4, so that the extrusion block 11 can support the slope protection plate 2, then the continuous excavation of the foundation pit 1 can be carried out, after the soil below the slope protection plate 2 is excavated, the decompression component can be started at this time, under the action of gravity, the slope protection plate 2 slides down along the slope of the foundation pit 1, the extrusion block 11 is extruded by the slope protection plate 2 in the process, so that the extrusion block 11 drives the push rod 9 and the first piston 8 to move towards the direction close to the vertical rod 4, the first spring 10 is continuously extruded to deform, meanwhile, the antifreeze in the cylinder 7 is recovered by matching with the decompression component, the decompression of the antifreeze in the cylinder 7 is realized, so that the movement of the extrusion block 11 can be ensured, the movement of the slope protection plate 2 is adapted, then the decompression component can be closed, the soil below the vertical rod 4 is excavated after the slope protection plate 2 stops, until the position of the vertical rod 4, the cross rod 5, the cylinder 7, the push rod 9 and the extrusion block 11 are consistent with the soil below the slope protection plate 2, the extrusion block 11 descends under the action of gravity, the extrusion block 11 moves along the extrusion groove and is extruded, meanwhile, antifreeze in the cylinder 7 is recovered by the pressure release assembly, the extrusion block 11, the push rod 9 and the first piston 8 can move towards the direction close to the vertical rod 4, the vertical rod 4 finally moves to the ground surface, then the pressure release assembly can be closed, the extrusion block 11 can not move at the moment, the slope protection plate 2 can be supported, the whole self-adaptive adjustment of the support frame formed by the vertical rod 4, the cross rod 5, the cylinder 7, the push rod 9 and the extrusion block 11 can be realized along with the downward excavation of the foundation pit 1, the whole adjustment process is simple and easy to operate, when the vertical rod 4 and the slope protection plate 2 descend, an empty part appears above the moment, the next group of assembled vertical rod 4 can be moved to the ground surface, the horizontal pole 5, barrel 7, push rod 9, crowded piece 11 are installed, are connected between two montants 4 about with through connecting piece 6, realize the equipment, and crowded piece 11 of the same reason top is located crowded inslot, along with foundation ditch 1 digs down, can repeatedly carry out the equipment of montant 4, horizontal pole 5, barrel 7, push rod 9, crowded piece 11 in the top, satisfies the support needs.
As shown in fig. 3, the pressure release assembly includes a backflow box 12, the backflow box 12 is located above the corresponding cylinder 7, one side of the bottom of the backflow box 12, which is close to the vertical rod 4, is fixedly connected with the cylinder 7 through a fixing pipe 13, the backflow box 12 is communicated with the cylinder 7 through the fixing pipe 13, an electromagnetic valve 14 is arranged outside the fixing pipe 13, a controller 25 matched with the electromagnetic valve 14 is arranged at the top of the backflow box 12, the controller 25 is a remote controller and can be matched with external remote control equipment to realize remote control opening of the electromagnetic valve 14, the remote control equipment can open a plurality of electromagnetic valves 14, the principle of the remote control technology is that in the prior art, when pressure release is needed, the electromagnetic valve 14 can be opened through the remote control equipment, at the moment, antifreeze in the cylinder 7 can enter the backflow box 12 through the fixing pipe 13, so that the antifreeze can be pressed into the backflow box 12 when the push rod 9 and the first piston 8 move towards the direction close to the vertical rod 4, the extrusion block 11 and the push rod 9 can be controlled by the remote control equipment to be closed, the antifreeze in the electromagnetic valve 7 can not enter the backflow box 12, and the antifreeze in the direction of the first extrusion block 8 and the push rod 9 can not move towards the vertical rod 4.
As shown in fig. 3, the connecting piece 6 is specifically configured as a collar member, the inner side of the connecting piece 6 and the upper and lower parts of the vertical rod 4 are respectively provided with a matched thread, the connecting piece 6 is arranged on the upper part of the vertical rod 4, the vertical rod 4 to be assembled can be placed on the top of the vertical rod 4 below, the connecting piece 6 is rotated forward to enable the connecting piece 6 to rotate and rise to be engaged with the threads on the outer side of the vertical rod 4 to be assembled, the assembly of the two vertical rods 4 is realized, and the connecting piece 6 can be rotated reversely to enable the connecting piece 6 to descend so as to cancel the assembly of the vertical rod 4.
As shown in fig. 3, the side plate 15 is symmetrically and fixedly installed at one end of the push rod 9 away from the vertical rod 4, the connecting rod 16 is fixedly installed at the middle part of one side of the extrusion block 11 close to the push rod 9, a rotating shaft is fixedly sleeved outside the connecting rod 16, the rotating shaft is rotatably installed between the pair of side plates 15, a limiting component for limiting the rotating angle of the rotating shaft is arranged at one end of the rotating shaft, a cavity is arranged in the extrusion block 11, the vertical rod 4 is provided with a weight increasing component for injecting water into the cavity to increase weight, the weight increasing component can inject water into the cavity to enable the extrusion block 11 to become heavy, the extrusion block 11 has a downward rotating trend under the action of gravity, so that the slope protection plate 2 can be pushed to compact soil body on the inner wall of the foundation pit 1 by extrusion with the inner wall of the foundation pit 1, the stability of the inner wall of the foundation pit 1 is improved, when the slope protection plate 2 descends, the rotating shaft can be limited by the limiting component through the limiting component, the extrusion block 11 rotates for a certain angle, and then stops, and when the extrusion block 11 descends, the slope protection plate 11 is in a horizontal reset state due to friction between the extrusion block 11 and the slope protection plate 2.
As shown in fig. 3, the limiting assembly comprises a limiting block 17, one end of a rotating shaft extends to the outside of a side plate 15 and is fixedly connected with one end of the limiting block 17, an inclined surface is formed at the top of the limiting block 17, the inclined surface faces the direction of a vertical rod 4, a baffle 18 matched with the limiting block 17 is fixedly arranged at the outer side of the side plate 15, the upper edge of the top of the limiting block 17 is in interference with the baffle 18, the rotating angle of the rotating shaft is 0 ° -20 °, in an initial state, the limiting block 11 is in a horizontal state, when the slope protection plate 2 descends, the limiting block 11, the connecting rod 16, the rotating shaft and the limiting block 17 are driven to rotate downwards through friction force, after a certain angle is rotated, the top surface of the limiting block 17 is in interference with the baffle 18 at the moment, so that the limiting block 17 cannot rotate, the limiting block 11 can rotate and reset to be in a horizontal state through friction force between the limiting block 17 and the slope protection plate 2 when the limiting block 11 descends.
As shown in fig. 3, the weight increasing component comprises a hose 19 communicated with a cavity, a cavity is arranged in the vertical rod 4, a channel communicated with the bottom of the cavity is arranged on the outer side of the vertical rod 4, one end of the hose 19, which is far away from the extrusion block 11, is fixedly connected with the inner wall of the channel, a second piston 20 is arranged in the cavity, a compression rod 21 is fixedly installed at the top of the second piston 20, a second spring is sleeved outside the compression rod 21, two ends of the second spring are respectively fixedly connected with the top wall of the cavity and the second piston 20, the top end of the compression rod 21 extends out of the cavity, water is filled in the cavity, when the bottom of the vertical rod 4 to be assembled above is placed at the top of the vertical rod 4 below, the compression rod 21 is extruded, so that the second piston 20 is driven to descend to press the water in the hose 19, and finally enters the extrusion block 11, so that the extrusion block 11 can be pulled to deform to generate acting force when the second piston 20 descends, and after the vertical rod 4 is disassembled, the deformed second spring releases acting force to the compression rod 21, and the second piston 21 is driven to be reset to the inside the hose 11.
As shown in fig. 3, the splicing assembly includes a snap ring 22, a movable groove is symmetrically formed at the lower part of the front surface of the slope protection plate 2, one end of the snap ring 22 is rotatably mounted in the movable groove through a movable shaft, one end of the snap ring 22 away from the movable shaft is fixedly mounted with a fixed plate 23, corresponding screw holes are formed in the front surface of the fixed plate 23 and the front surface of the slope protection plate 2, the fixed plate 23 is connected with the slope protection plate 2 through the cooperation of screws and the screw holes, an inserting rod 24 matched with the snap ring 22 is symmetrically mounted at the upper part of the front surface of the slope protection plate 2, when the upper slope protection plate 2 is in butt joint with the lower Fang Hupo plate 2, the butt joint of the two slope protection plates 2 is completed through the cooperation of the inserting rod 24 and the snap ring 22, the screws can rotate to cancel the connection of the fixed plate 23 and the slope protection plate 2, the snap ring 22 rotates to cancel the limitation of the inserting rod 24, and at the moment, the slope protection plate 2 can be detached.
Working principle: when in use, the two side inner walls of the foundation pit 1 after the pre-grouting solidification of the anchor cable are fixed are provided with limit grooves, the limit strips 3 on the slope protection plate 2 are placed in the limit grooves, the limit grooves are continuously opened along with the downward digging of the foundation pit 1, the slope protection plates 2 on the two side inner walls of the foundation pit 1 are installed, the left and right adjacent vertical rods 4 are connected through the cross rods 5, the vertical rods 4 are connected with the cross rods 5 through threads, the outermost vertical rods 4 are connected with the cylinder 7 through threads, the assembled vertical rods 4, the cross rods 5 and the cylinder 7 are placed in the foundation pit 1, the squeeze blocks 11 on the two sides are respectively positioned in the corresponding squeeze grooves, the first springs 10 at the moment are compressed to be in a deformation state, the generated counter force can push the first pistons 8, the push rods 9 and the squeeze blocks 11 to collide with the slope protection plates 2, the antifreeze in the cylinder 7 is filled, the electromagnetic valve 14 is controlled to be closed through remote control equipment, the antifreeze in the cylinder 7 can not enter the reflux box 12 at the moment, the first piston 8, the push rod 9 and the extrusion block 11 can not move towards the direction close to the vertical rod 4, the extrusion block 11 can support the slope protection plate 2, then the continuous excavation of the foundation pit 1 can be carried out, after the soil below the slope protection plate 2 is excavated, the electromagnetic valve 14 can be opened through remote control equipment, at the moment, the antifreeze fluid in the cylinder 7 can enter the reflux box 12 through the fixed pipe 13, the push rod 9 and the first piston 8 can press the antifreeze fluid into the reflux box 12 when moving towards the direction close to the vertical rod 4, the extrusion block 11 and the push rod 9 can move, under the action of gravity, the slope protection plate 2 slides downwards along the slope of the foundation pit 1, the extrusion block 11 is extruded by the slope protection plate 2 in the process, the extrusion block 11 drives the push rod 9 and the first piston 8 to move towards the direction close to the vertical rod 4, the first spring 10 is continuously extruded to deform, and meanwhile the antifreeze fluid returns into the reflux box 12, realize the decompression of the antifreeze in the cylinder 7, ensure the movement of the extrusion block 11, adapt to the movement of the slope protection plate 2, when the slope protection plate 2 stops, the solenoid valve 14 is closed again by the same operation, then the soil below the vertical rod 4 is excavated until the soil is consistent with the soil below the slope protection plate 2, the solenoid valve 14 is opened, the vertical rod 4, the cross rod 5, the cylinder 7, the push rod 9 and the extrusion block 11 descend under the action of gravity, the extrusion block 11 is extruded along the extrusion groove, meanwhile, the antifreeze in the cylinder 7 is recovered, the extrusion block 11, the push rod 9 and the first piston 8 can move towards the direction close to the vertical rod 4, finally the vertical rod 4 moves to the soil surface, the solenoid valve 14 is closed, the extrusion block 11 cannot move, the slope protection plate 2 can be supported, the integral self-adaptive adjustment of a support frame consisting of the vertical rods 4, the cross rods 5, the cylinder 7, the push rods 9 and the extruded blocks 11 can be realized along with the downward excavation of the foundation pit 1, the whole adjustment process is simple and easy to operate, when the vertical rods 4 and the slope protection plate 2 descend, a vacant part appears above the slope protection plate, the next group of assembled vertical rods 4, the cross rods 5, the cylinder 7, the push rods 9 and the extruded blocks 11 can be installed, the upper vertical rods 4 and the lower vertical rods 4 are connected through the connecting piece 6, the assembly is realized, the extruded blocks 11 above the same are positioned in the extruded grooves, and the assembly of the vertical rods 4, the cross rods 5, the cylinder 7, the push rods 9 and the extruded blocks 11 can be repeatedly carried out above along with the downward excavation of the foundation pit 1, so that the support needs are met; when the upper vertical rod 4 and the lower vertical rod 4 are assembled, the compression rod 21 is extruded to drive the second piston 20 to descend so as to press water in the cavity into the hose 19, and finally the second piston 20 enters into the extrusion block 11, so that the extrusion block 11 is increased in weight, the second spring is pulled to deform so as to generate acting force when the second piston 20 descends, the extrusion block 11 is subjected to the action of gravity and has a downward rotating trend, so that the slope protection plate 2 is pushed to be extruded with the inner wall of the foundation pit 1 to compact the soil body on the inner wall of the foundation pit 1, the stability of the inner wall of the foundation pit 1 is improved, the rotation angle of the rotating shaft is 0-20 degrees, the extrusion block 11 is in a horizontal state when the slope protection plate 2 descends, the extrusion block 11, the connecting rod 16, the rotating shaft and the limiting block 17 are driven to rotate downwards by friction force, the top surface of the limiting block 17 is in contact with the baffle 18 at the moment, the limiting block 17 cannot rotate, the extrusion block 11 stops moving, the extrusion block 11 can rotate through friction force between the slope protection plate 2 and the slope protection plate 2, the extrusion block 11 can rotate to reset to be in a horizontal state, the extrusion block 17 cannot be compacted with the limiting block 17 continuously, and the compaction effect of the soil body cannot be increased continuously along with the extrusion block 11; along with the installation of foundation ditch internal facilities is accomplished, follow the earth backfill of pit bottom, remove gradually from the bottom and protect the slope board 2, but rotate reversible connecting piece 6 and make its decline and can cancel the equipment to montant 4 afterwards, take off montant 4, because lose the extrusion of top montant 4 to depression bar 21, the second spring release effort of deformation this moment drives second piston 20 and depression bar 21 and rises to reset for with the water in the extrusion piece 11 through hose 19 back to the cavity in, progressively demolish from bottom to top.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The construction method for excavating the falling side slope of the space support frame after the pre-grouting solidification of the anchor cable is fixed is characterized by comprising the following steps: the method comprises the following steps:
s1, arranging supporting components in a foundation pit (1) after grouting, solidification and anchor cable fixation to support and protect inner walls at two sides of the foundation pit (1);
s2, then an operator enters the foundation pit (1) to perform excavation construction;
s3, gradually falling the support component into the pit along with the formation of the pit, so that the pit wall can be supported and protected;
s4, after the excavation is completed, backfilling soil from the pit bottom after the construction of facilities in the pit is completed, gradually removing the support assembly from the bottom until the backfilling is completed, and then completely removing the support assembly;
the utility model provides a slope protection plate, including a plurality of slope protection plates (2) and montant (4), the outside of slope protection plate (2) is equipped with the concatenation subassembly that can splice other slope protection plates (2), the back of slope protection plate (2) is equipped with spacing (3), offer on the both sides inner wall of foundation ditch (1) with spacing (3) complex spacing groove, control adjacent connect through horizontal pole (5) between montant (4), from top to bottom be connected through connecting piece (6) between montant (4), be located outside threaded connection of montant (4) has barrel (7), the inside slip of barrel (7) is equipped with first piston (8), one side fixed mounting that montant (4) was kept away from to first piston (8) has push rod (9), one side that first piston (8) is close to montant (4) is equipped with first spring (10), the inside packing of barrel (7) has the antifreeze, the outside of barrel (7) is equipped with the pressure release subassembly that supplies antifreeze, push rod (9) are kept away from first piece (8) and are equipped with the front of extrusion piece (11) and are equipped with extrusion groove (11).
2. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the pressure relief assembly comprises a backflow box (12), the backflow box (12) is located above the corresponding cylinder (7), the bottom of the backflow box (12) is fixedly connected with one side, close to the vertical rod (4), of the cylinder (7) through a fixing pipe (13), the backflow box (12) is communicated with the cylinder (7) through the fixing pipe (13), an electromagnetic valve (14) is arranged outside the fixing pipe (13), and a controller (25) matched with the electromagnetic valve (14) is arranged at the top of the backflow box (12).
3. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the connecting piece (6) is specifically arranged to be a lantern ring component, the inner side of the connecting piece (6) and the upper part and the lower part of the vertical rod (4) are respectively provided with matched threads, and the connecting piece (6) is arranged on the upper part of the vertical rod (4).
4. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the utility model discloses a push rod, including push rod (9), push rod (4), connecting rod (16) are installed to the one end symmetry fixed mounting that push rod (9) kept away from montant (4), one side middle part fixed mounting that push rod (11) are close to push rod (9), the outside fixed cover of connecting rod (16) is equipped with the pivot, the pivot is rotated and is installed between a pair of curb plate (15), the one end of pivot is equipped with the restriction subassembly of restriction rotation angle, the inside of push rod (11) is equipped with the cavity, be equipped with the subassembly of gaining weight for the cavity internal water injection makes it increase weight on montant (4).
5. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the limiting assembly comprises a limiting block (17), one end of the rotating shaft extends out of the side plate (15) and is fixedly connected with one end of the limiting block (17), an inclined plane is arranged at the top of the limiting block (17) and faces the direction of the vertical rod (4), a baffle plate (18) matched with the limiting block (17) is fixedly arranged on the outer side of the side plate (15), the upper edge of the top of the limiting block (17) is abutted against the baffle plate (18), and the rotating angle of the rotating shaft is 0-20 degrees.
6. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the weight increasing assembly comprises a hose (19) communicated with a cavity, a cavity is formed in the vertical rod (4), a channel communicated with the bottom of the cavity is formed in the outer side of the vertical rod (4), one end of the hose (19), which is far away from the extrusion block (11), is fixedly connected with the inner wall of the channel, a second piston (20) is arranged in the cavity, a compression rod (21) is fixedly arranged at the top of the second piston (20), a second spring is sleeved on the outer portion of the compression rod (21), two ends of the second spring are fixedly connected with the top wall of the cavity and the second piston (20) respectively, the top end of the compression rod (21) extends out of the cavity, and water is filled in the cavity.
7. The method for excavating and constructing the falling side slope of the space support frame after the grouting solidification of the anchor cable is fixed, which is characterized by comprising the following steps of: the utility model discloses a slope protection plate, including splice subassembly, splice subassembly includes snap ring (22), the positive lower part symmetry of slope protection plate (2) has seted up the movable groove, the one end of snap ring (22) is rotated through the loose axle and is installed in the movable inslot, the one end fixed mounting that the loose axle was kept away from to snap ring (22) has fixed plate (23), the screw that corresponds has been seted up in the front of fixed plate (23) and slope protection plate (2), be connected through the cooperation of screw with the screw between fixed plate (23) and slope protection plate (2), positive upper portion symmetry fixed mounting of slope protection plate (2) have with snap ring (22) complex inserted bar (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310305260.9A CN116335151B (en) | 2023-03-27 | 2023-03-27 | Construction method for excavating falling slope of space support frame after pre-grouting solidification of anchor cable |
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| CN202310305260.9A CN116335151B (en) | 2023-03-27 | 2023-03-27 | Construction method for excavating falling slope of space support frame after pre-grouting solidification of anchor cable |
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| JP2002081068A (en) * | 2000-09-05 | 2002-03-22 | Kajima Corp | Vertical slide device and jack device for slide type earth retaining timbering system |
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| CN112323818A (en) * | 2020-11-25 | 2021-02-05 | 成都城投建筑工程有限公司 | Soil nailing wall supporting construction |
| CN113494092A (en) * | 2021-07-19 | 2021-10-12 | 福州市建筑设计院有限责任公司 | Foundation pit slope supporting structure and construction method thereof |
| CN215165668U (en) * | 2021-06-01 | 2021-12-14 | 范燕霞 | Multi-functional deep basal pit supporting construction |
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2023
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081068A (en) * | 2000-09-05 | 2002-03-22 | Kajima Corp | Vertical slide device and jack device for slide type earth retaining timbering system |
| CN111456032A (en) * | 2020-04-28 | 2020-07-28 | 中铁工程装备集团有限公司 | Foundation pit supporting system and construction method thereof |
| CN112323818A (en) * | 2020-11-25 | 2021-02-05 | 成都城投建筑工程有限公司 | Soil nailing wall supporting construction |
| CN215165668U (en) * | 2021-06-01 | 2021-12-14 | 范燕霞 | Multi-functional deep basal pit supporting construction |
| CN113494092A (en) * | 2021-07-19 | 2021-10-12 | 福州市建筑设计院有限责任公司 | Foundation pit slope supporting structure and construction method thereof |
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