CN114753379A - Deep foundation pit supporting structure and deep foundation pit construction method - Google Patents
Deep foundation pit supporting structure and deep foundation pit construction method Download PDFInfo
- Publication number
- CN114753379A CN114753379A CN202210489700.6A CN202210489700A CN114753379A CN 114753379 A CN114753379 A CN 114753379A CN 202210489700 A CN202210489700 A CN 202210489700A CN 114753379 A CN114753379 A CN 114753379A
- Authority
- CN
- China
- Prior art keywords
- supporting
- wall
- rod
- pit
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
Landscapes
- 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)
- Foundations (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of deep foundation pits, and particularly relates to a deep foundation pit supporting structure and a deep foundation pit construction method, wherein the deep foundation pit supporting structure comprises a pit wall supporting plate, an inclined supporting assembly is rotatably connected to the pit wall supporting plate, one end, far away from the pit wall supporting plate, of the inclined supporting assembly is rotatably connected with a bottom supporting assembly, and a splicing assembly is mounted on the pit wall supporting plate; the inclined supporting component comprises a first supporting block, and the inclined supporting component has the beneficial effects that: by arranging the inclined supporting assembly, the length can be conveniently adjusted, so that the supporting angle of the inclined supporting assembly can be adjusted more quickly, and the operation is more convenient; and only need to pull out the bracing strut to the square of keeping away from oblique bracing piece, during first stopper card was gone into the rectangle through-hole, realized the support stability of bracing strut and oblique bracing piece, can link together adjacent pot wall backplate to make all pot wall backplate participate in the atress together, strengthen support intensity, and difficult local deformation.
Description
Technical Field
The invention relates to the technical field of deep foundation pits, in particular to a deep foundation pit supporting structure and a deep foundation pit construction method.
Background
The deep foundation pit refers to a project which is excavated to a depth of more than 5 meters (including 5 meters), or to a depth of less than 5 meters, but has particularly complicated geological conditions, surrounding environments and underground pipelines. The deep foundation pit support is a measure of supporting, reinforcing and protecting the side wall of the deep foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.
In the existing deep foundation pit supporting structure, a flat plate is used for supporting the inner wall of a pit, and an inclined supporting rod is used for supporting the flat plate, so that the length of the inclined supporting rod is difficult to adjust, and the flat plate is poor in supporting stability and a strength cavity; because the inclined support and the flat plate are in point contact, the stress point of the flat plate is on one point, and the flat plate is easy to deform under pressure; and the flat plates are independent from each other, and local stress cannot be transferred to the whole supporting structure, so that the deformation caused by overlarge local stress is easy to occur.
Disclosure of Invention
The invention provides a deep foundation pit supporting structure and a deep foundation pit construction method.
Therefore, the invention aims to provide a deep foundation pit supporting structure and a deep foundation pit construction method, which solve the problems that the existing deep foundation pit supporting structure supports the inner wall of a pit by using a flat plate, supports the flat plate by using an inclined supporting rod, has high difficulty in adjusting the length of the inclined supporting rod, and causes poor supporting stability and a strength cavity of the flat plate; because the inclined support and the flat plate are in point contact, the stress point of the flat plate is on one point, and the flat plate is easy to deform under pressure; and the flat plates are independent from each other, so that local stress cannot be transferred to the whole supporting structure, and the problem that the local stress is too large and the deformation is easy to happen is solved.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
the deep foundation pit supporting structure comprises a pit wall supporting and protecting plate, wherein an inclined supporting and protecting assembly is rotatably connected to the pit wall supporting and protecting plate, one end, far away from the pit wall supporting and protecting plate, of the inclined supporting and protecting assembly is rotatably connected with a bottom supporting and protecting assembly, and a splicing assembly is mounted on the pit wall supporting and protecting plate;
the inclined supporting assembly comprises a first supporting block, the inner wall of the first supporting block is rotatably connected with an inclined supporting rod through a pin shaft, the outer wall of the inclined supporting rod is slidably connected with an inclined supporting rod, a tooth socket is formed in the inclined supporting rod, teeth are integrally formed in the inner wall of the tooth socket, a first rectangular groove is formed in the inclined supporting rod at equal distance, a second limiting block is welded to the inner wall of the first rectangular groove, the inner wall of the first rectangular groove is rotatably connected with the first limiting block through the pin shaft, the outer wall of the first limiting block is fixedly connected with a spring, one end, away from the first limiting block, of the spring is fixedly connected with the inner wall of the first rectangular groove, and rectangular through holes are formed in the inclined supporting rod at equal distance;
the inclined supporting rod is provided with a notch, the inclined supporting rod is meshed with a gear through teeth, the inner wall of the gear is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a crank, two ends of the rotating shaft are rotatably connected with a second supporting block through bearings, the second supporting block is detachably mounted on the inclined supporting rod, and the inner wall of the bottom end of the inclined supporting rod is rotatably connected with a bottom plate;
the splicing assembly comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are respectively and rotatably arranged on the side walls of two ends of the pit wall supporting plate through movable connecting assemblies;
the second connecting plate is provided with an inserting groove, an inserting strip is integrally formed at one end of the first connecting plate, and the inserting groove is matched with the inserting strip in size.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the pit wall supporting plate is provided with a groove, and a wave-shaped reinforcing plate is embedded into the groove.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the first supporting block is mounted on the pit wall supporting plate through a bolt, and the second supporting block is mounted on the inclined supporting rod through a bolt.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the bottom supporting assembly comprises a bottom plate, a first fixing seat is fixedly mounted at the top end of the bottom plate, a first U-shaped rod is inserted into the inner wall of the first fixing seat, the inner wall of the first U-shaped rod is in threaded connection with a threaded pile, the outer wall of the threaded pile is in threaded connection with the bottom plate, a driving block is fixedly connected at the top end of the threaded pile, and a driving rod is inserted into the inner wall of the driving block.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the movable connecting component comprises a second fixing seat, a first connecting rod is inserted into the inner wall of the second fixing seat, the first connecting rod is kept away from one end of the second fixing seat is rotated to connect a second U-shaped rod, a third fixing seat is inserted into the outer wall of one end of the second U-shaped rod, the second U-shaped rod and the third fixing seat are connected through bolts, the second fixing seat and the first connecting rod are connected through bolts, the third fixing seat is installed on the side walls of the two ends of the pit wall supporting plate, and the first connecting plate and the second connecting plate are close to one end of the pit wall supporting plate and are installed on the second fixing seat.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the two sides of the bottom plate are both provided with a reinforcing connecting assembly;
the reinforcing connecting assembly comprises a fourth fixed seat, a third U-shaped rod is inserted into the inner wall of the fourth fixed seat, and the third U-shaped rod is connected with the fourth fixed seat through a bolt;
the outer wall of a third U-shaped rod in the reinforcing connecting assembly at the left end is rotatably connected with a second connecting rod, a hemispherical block is integrally formed at one end of the second connecting rod, the outer wall of the second connecting rod is connected with a rectangular frame in a sliding mode, and the outer wall of the rectangular frame is fixedly connected with a threaded rod; the right end the outer wall of a third U-shaped rod in the reinforcing and connecting assembly is rotatably connected with an internal threaded pipe.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the device also comprises a uniform force reinforcing mechanism;
the uniform force reinforcing mechanism comprises a transverse supporting rod, and the outer wall of the transverse supporting rod is rotatably connected with two groups of inclined reinforcing assemblies;
the inclined reinforcing component comprises a bearing and a guide rail, the outer wall of the bearing is fixedly connected with a sleeve pipe, the inner wall of the sleeve pipe is slidably connected with a sleeve rod, the sleeve pipe and the sleeve rod are fixed through bolts, the sleeve rod is far away from one end of the bearing and is rotatably connected with a moving block through a pin shaft, the two ends of the moving block are fixedly connected with sliding blocks, a sliding groove is formed in the guide rail, the inner wall of the sliding groove is slidably connected with the sliding blocks, the guide rail is installed on the pit wall supporting plate through bolts, one end of the transverse supporting rod is fixedly connected with an inclined supporting rod, the moving block and the guide rail are connected through bolts, and inner threaded holes are formed in the guide rail at equal distances.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: first internal thread holes are formed in the sleeving pipe at equal intervals, second internal thread holes are formed in the sleeving rod at equal intervals, the aperture of each first internal thread hole is equal to that of each second internal thread hole, and the distance between every two adjacent first internal thread holes is equal to the distance between every two adjacent second internal thread holes.
As a preferable scheme of the deep foundation pit supporting structure of the present invention, wherein: the pit wall supporting and protecting plate is of a hollow structure with an opening at one end, a third internal thread hole is formed in the first connecting plate, a fourth internal thread hole is formed in the second connecting plate, and the hole diameters of the third internal thread hole and the fourth internal thread hole are equal.
The method for constructing the deep foundation pit specifically comprises the following steps:
s1, placing the wave-shaped reinforcing plate into the groove of the pit wall supporting and protecting plate, and reinforcing the pit wall supporting and protecting plate by using the wave-shaped reinforcing plate to enhance the compression resistance;
s2, the pit wall supporting plate is attached to the inner wall of the foundation pit, the lengths of the inclined supporting rod and the inclined supporting rod are adjusted, and the adjusting mode is as follows: the crank is rotated to drive the rotating shaft to rotate, the rotating shaft drives the gear to rotate so as to drive the inclined supporting rod to move, after the length is adjusted, the first limiting block enters the rectangular through hole under the driving of the spring, and the inclined supporting rod are stable under the action of the second limiting block; and the inclined supporting rod and the pit wall supporting and protecting plate form a forty-five degree;
s3, fixing the bottom support assembly on the bottom wall of the foundation pit, placing the bottom plate on the bottom wall of the foundation pit, inserting one end of a driving rod into a driving block, and rotating the driving rod to drive the driving block to rotate so as to drive the threaded pile to rotate and descend until the threaded pile penetrates into the ground;
s4, splicing the adjacent pit wall supporting and protecting plates to connect all the pit wall supporting and protecting plates together, inserting the splicing strips on the first connecting plate on the pit wall supporting and protecting plate into the splicing grooves of the second connecting plate on the left pit wall supporting and protecting plate to realize the rotary connection between the adjacent pit wall supporting and protecting plates, and fixing the second connecting plate and the splicing strips by using bolts; then adjusting the angle between two adjacent pit wall supporting and protecting plates according to the shape of the inner wall of the foundation pit, so that the pit wall supporting and protecting plates can be attached to the inner wall of the foundation pit;
s5, using the uniform force reinforcing mechanism, installing the guide rail on the pit wall supporting plate by using a bolt, sleeving the bearing on the transverse supporting rod, fixing the sleeving pipe and the sleeving rod by using the bolt, and connecting the moving block with the guide rail by using the bolt to limit the sliding of the moving block; therefore, the pit wall supporting and protecting plate bears the stress not only at the contact part with the inclined supporting and protecting assembly, but also at the contact part with the uniform force reinforcing mechanism, so that the pit wall supporting and protecting plate is not easy to deform due to overlarge local stress;
s6, connecting adjacent bottom plates, and connecting the threaded rod on the bottom plate with the internal threaded pipe on the bottom plate on one side, so that all the bottom plates are connected into a whole, thereby being capable of uniformly bearing force and enhancing the supporting strength.
Compared with the prior art:
1. the pit wall supporting plate is provided with the groove, so that the weight of the pit wall supporting plate is effectively reduced, the working operation is more labor-saving, and the operation is faster; the supporting strength of the pit wall supporting plate is ensured by inserting the wave-shaped reinforcing plate into the groove;
2. by arranging the inclined supporting assembly, the length can be conveniently adjusted, so that the supporting angle of the inclined supporting assembly can be adjusted more quickly, and the operation is more convenient; the inclined support rod is pulled towards a square far away from the inclined support rod, and the first limiting block is clamped into the rectangular through hole, so that the support stability of the inclined support rod and the inclined support rod is realized;
3. by arranging the bottom supporting assembly, the threaded pile is driven to be inserted into the ground by rotating the driving rod, so that the use is more labor-saving, the operation is convenient, and the inclined supporting assembly is stably supported;
4. by arranging the internal threaded pipe and the threaded rod, the adjacent bottom plates are connected together, so that the inclined support assembly is integrally connected, and the support strength is improved;
5. by arranging the uniform force reinforcing mechanism, the stress area of the pit wall supporting plate can be increased, so that the pit wall supporting plate is not easy to deform under local pressure;
through setting up the concatenation subassembly, can link together adjacent pithead wall backplate to make all pithead wall backplate participate in the atress together, strengthen supporting strength, and difficult local deformation.
Drawings
Fig. 1 is a schematic structural diagram provided by the present invention.
Fig. 2 is a sectional view of the diagonal bracing bar and the diagonal bracing bar provided by the present invention.
Fig. 3 is an enlarged view of the invention at B in fig. 1.
Fig. 4 is an enlarged view of the invention at D in fig. 1.
Fig. 5 is an enlarged view of E of fig. 1 according to the present invention.
Fig. 6 is an enlarged view of a portion a of fig. 2 according to the present invention.
Fig. 7 is a top view of the pit wall backup plate according to the present invention.
Fig. 8 is a sectional view showing the connection of the first connecting plate and the second connecting plate according to the present invention.
FIG. 9 is a partial schematic view of the present invention shown in FIG. 1 with the uniform force reinforcement mechanism installed.
Fig. 10 is an enlarged view of the invention at C in fig. 9.
Fig. 11 is a schematic view of the splicing of two pit wall supporting plates provided by the present invention.
In the figure: the pit wall supporting and protecting plate 1, the wave-shaped reinforcing plate 11, the groove 12, the splicing component 2, the first connecting plate 21, the third internal threaded hole 211, the inserting groove 212, the second connecting plate 22, the fourth internal threaded hole 221, the inserting strip 222, the inclined supporting component 3, the crank 30, the inclined supporting rod 31, the tooth 310, the tooth socket 311, the first rectangular groove 312, the first limiting block 313, the spring 314, the second limiting block 315, the inclined supporting rod 32, the notch 321, the rectangular through hole 322, the second supporting block 33, the rotating shaft 34, the gear 35, the first supporting block 36, the bottom supporting component 4, the bottom plate 41, the fourth fixing seat 411, the third U-shaped rod 412, the first U-shaped rod 42, the first fixing seat 421, the threaded pile 43, the driving block 44, the driving rod 45, the internal threaded pipe 46, the threaded rod 471, the rectangular frame 472, the second connecting rod 473, the hemispherical block, the uniform force reinforcing mechanism 5, the guide rail 51, the sliding groove 511, the transverse supporting rod 52, the supporting rod 511, the transverse supporting rod 43, the uniform force reinforcing mechanism 5, The oblique reinforcing component 53, the bearing 531, the sleeve 533, the first internally threaded hole 5331, the sleeve rod 534, the second internally threaded hole 5341, the moving block 535, the sliding block 536, the movable connecting component 6, the second fixed seat 61, the first connecting rod 62, the second U-shaped rod 63 and the third fixed seat 64.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides a deep foundation pit supporting structure, please refer to fig. 1-11, which comprises a pit wall supporting and protecting plate 1, wherein an inclined supporting component 3 is rotatably connected on the pit wall supporting and protecting plate 1, one end of the inclined supporting component 3, which is far away from the pit wall supporting and protecting plate 1, is rotatably connected with a bottom supporting component 4, a splicing component 2 is installed on the pit wall supporting and protecting plate 1, a groove 12 is formed in the pit wall supporting and protecting plate 1, a wave-shaped reinforcing plate 11 is embedded in the groove 12, and the pit wall supporting and protecting plate 1 is a hollow structure with an opening at one end;
the pit wall supporting and protecting plate 1 has the functions of supporting the inner wall of a foundation pit, the inclined supporting and protecting component 3 has the functions of keeping the pit wall supporting and protecting plate 1 stable, and the splicing component 2 has the functions of splicing the adjacent pit wall supporting and protecting plates 1, so that all the pit wall supporting and protecting plates 1 are connected together, the force applied to any pit wall supporting and protecting plate 1 is transferred to all the pit wall supporting and protecting plates 1, the stress is applied together, and the supporting and protecting bearing strength is improved;
the inclined support component 3 comprises a first support block 36, the inner wall of the first support block 36 is rotatably connected with an inclined support rod 31 through a pin shaft, the outer wall of the inclined support rod 31 is slidably connected with an inclined support rod 32, a tooth socket 311 is formed in the inclined support rod 31, teeth 310 are integrally formed in the inner wall of the tooth socket 311, first rectangular grooves 312 are formed in the inclined support rod 31 at equal distances, second limit blocks 315 are welded to the inner wall of the first rectangular grooves 312, the inner wall of the first rectangular grooves 312 is rotatably connected with the first limit blocks 313 through pin shafts, springs 314 are fixedly connected to the outer walls of the first limit blocks 313, one ends, far away from the first limit blocks 313, of the springs 314 are fixedly connected with the inner walls of the first rectangular grooves 312, rectangular through holes 322 are formed in the inclined support rod 32 at equal distances, the first support block 36 is installed on the pit wall support plate 1 through bolts, and the second support blocks 33 are installed on the inclined support rod 32 through bolts; a notch 321 is formed in the inclined support rod 32, the inclined support rod 31 is meshed with the gear 35 through the tooth 310, the inner wall of the gear 35 is fixedly connected with the rotating shaft 34, one end of the rotating shaft 34 is fixedly connected with the crank 30, two ends of the rotating shaft 34 are rotatably connected with the second support block 33 through bearings, the second support block 33 is detachably mounted on the inclined support rod 32, and the inner wall of the bottom end of the inclined support rod 32 is rotatably connected with the bottom plate 41;
the inclined support rod 31 and the inclined support rod 32 are inserted, so that the lengths of the inclined support rod 31 and the inclined support rod 32 can be adjusted, and the inclined support rod 31 and the inclined support rod 32 can be matched with the bottom support assembly 4 to stably support the pit wall support and protection plate 1; the notch 321 is used for the gear 35 to engage with the tooth 310, so that the diagonal support rod 31 can be driven to slide on the diagonal support rod 32 relative to the diagonal support rod 32; the crank 30 is used for driving the rotating shaft 34 to rotate in a labor-saving manner; the spring 314 is used for driving the first limit block 313 to move outwards the first rectangular groove 312; the second stopper 315 serves to limit the rotation amplitude of the first stopper 313, so that the bottom of the first stopper 313 can be lapped on the inner wall of the rectangular through hole 322, and the inclined support rod 31 and the inclined support rod 32 are kept stable;
the splicing assembly 2 comprises a first connecting plate 21 and a second connecting plate 22, and the first connecting plate 21 and the second connecting plate 22 are respectively and rotatably arranged on the side walls of the two ends of the pit wall supporting and protecting plate 1 through the movable connecting assembly 6; the second connecting plate 22 is provided with an inserting groove 212, one end of the first connecting plate 21 is integrally provided with an inserting strip 222, the inserting groove 212 is matched with the inserting strip 222 in size, the first connecting plate 21 is provided with a third internal threaded hole 211, the second connecting plate 22 is provided with a fourth internal threaded hole 221, and the diameters of the third internal threaded hole 211 and the fourth internal threaded hole 221 are equal;
the splicing assembly 2 is used for realizing the connection among the plurality of pit wall supporting and protecting plates 1, so that the plurality of pit wall supporting and protecting plates 1 are integrated, the supporting strength is enhanced, the whole is stressed, and the local compression deformation is avoided; the insertion of the insertion strip 222 into the insertion groove 212 realizes the connection between the first connecting plate 21 and the second connecting plate 22, so that the connection between the adjacent pit wall support plates 1 is convenient.
The bottom supporting assembly 4 comprises a bottom plate 41, a first fixed seat 421 is fixedly mounted at the top end of the bottom plate 41, a first U-shaped rod 42 is inserted in the inner wall of the first fixed seat 421, a threaded pile 43 is in threaded connection with the inner wall of the first U-shaped rod 42, the outer wall of the threaded pile 43 is in threaded connection with the bottom plate 41, a driving block 44 is fixedly connected at the top end of the threaded pile 43, and a driving rod 45 is inserted in the inner wall of the driving block 44;
the bottom supporting component 4 is used for supporting the bottom of the inclined supporting component 3, and the screw-thread pile 43 can be driven to rotate through the driving rod 45, so that the screw-thread pile 43 can be conveniently inserted into the ground, and the operation is more convenient; the driving rod 45 is directly inserted into the driving block 44, and the driving rod 45 can be pulled out without rotating the driving block 44.
The movable connecting assembly 6 comprises a second fixing seat 61, a first connecting rod 62 is inserted into the inner wall of the second fixing seat 61, one end, far away from the second fixing seat 61, of the first connecting rod 62 is rotatably connected with a second U-shaped rod 63, the outer wall of one end of the second U-shaped rod 63 is inserted with a third fixing seat 64, the second U-shaped rod 63 is connected with the third fixing seat 64 through a bolt, the second fixing seat 61 is connected with the first connecting rod 62 through a bolt, the third fixing seat 64 is installed on the side walls of the two ends of the pit wall supporting and protecting plate 1, and the second fixing seats 61 are installed at the ends, close to the pit wall supporting and protecting plate 1, of the first connecting plate 21 and the second connecting plate 22;
the movable connection assembly 6 is used for realizing the rotary connection of the splicing assembly 2 and the pit wall supporting and protecting plate 1, so that the angle between the adjacent pit wall supporting and protecting plates 1 can be adjusted, and the pit wall supporting and protecting plates 1 can be flexibly supported according to the shape of the inner wall of the foundation pit.
The two sides of the bottom plate 41 are both provided with a reinforcing connecting assembly; the reinforcing connecting assembly comprises a fourth fixed seat 411, a third U-shaped rod 412 is inserted into the inner wall of the fourth fixed seat 411, and the third U-shaped rod 412 is connected with the fourth fixed seat 411 through a bolt;
the outer wall of a third U-shaped rod 412 in the left end reinforcing and connecting assembly is rotatably connected with a second connecting rod 473, one end of the second connecting rod 473 is integrally provided with a hemispherical block 474, the outer wall of the second connecting rod 473 is connected with a rectangular frame 472 in a sliding manner, and the outer wall of the rectangular frame 472 is fixedly connected with a threaded rod 471; the outer wall of a third U-shaped rod 412 in the right-end reinforcing connecting assembly is rotatably connected with the internal threaded pipe 46; the threaded rod 471 and the internally threaded tube 46 are screwed together, so that all the bottom support assemblies 4 can be connected together, and the support strength of the bottoms of the inclined support assemblies 3 is enhanced.
The device also comprises a uniform force reinforcing mechanism 5; the uniform force reinforcing mechanism 5 comprises a transverse supporting rod 52, and the outer wall of the transverse supporting rod 52 is rotatably connected with two groups of inclined reinforcing components 53;
the pit wall supporting and protecting plate structure further comprises a uniform force reinforcing mechanism 5, and the problems that only the inclined supporting and protecting assembly 3 supports the pit wall supporting and protecting plate 1, the stress range of the pit wall supporting and protecting plate 1 is small, and the pit wall supporting and protecting plate 1 is easy to deform locally are solved;
the inclined reinforcing component 53 comprises a bearing 531 and a guide rail 51, the outer wall of the bearing 531 is fixedly connected with a sleeve pipe 533, the inner wall of the sleeve pipe 533 is slidably connected with a connecting rod 534, the sleeve pipe 533 and the sleeve rod 534 are fixed through bolts, one end, far away from the bearing 531, of the sleeve rod 534 is rotatably connected with a moving block 535 through a pin shaft, two ends of the moving block 535 are fixedly connected with sliding blocks 536 respectively, a sliding groove 511 is formed in the guide rail 51, the inner wall of the sliding groove 511 is slidably connected with the sliding blocks 536, the guide rail 51 is installed on the pit wall supporting and protecting plate 1 through bolts, one end of a transverse supporting rod 52 is fixedly connected with an inclined supporting rod 31, the moving block 535 is connected with the guide rail 51 through bolts, inner threaded holes are formed in the guide rail 51 at equal distances, first inner threaded holes 5331 are formed in the sleeve pipe 533 at equal distances, second inner threaded holes 5341 are formed in the sleeve rod 534 at equal distances, the first inner threaded holes 5331 are equal to the second inner threaded holes 5341, and the distance between adjacent first inner threaded holes are equal to the distance between the adjacent inner threaded holes 5331;
the inclined reinforcing component 53 enlarges the stress range of the pit wall supporting and protecting plate 1, and the pit wall supporting and protecting plate 1 is not easy to deform locally.
The method for constructing the deep foundation pit specifically comprises the following steps:
s1, placing the wave-shaped reinforcing plate 11 into the groove 12 of the pit wall supporting and protecting plate 1, and reinforcing the pit wall supporting and protecting plate 1 by using the wave-shaped reinforcing plate 11 to enhance the compression resistance;
s2, the pit wall supporting plate 1 is attached to the inner wall of the foundation pit, the lengths of the inclined supporting rod 32 and the inclined supporting rod 31 are adjusted, and the adjusting mode is as follows: the crank 30 is rotated to drive the rotating shaft 34 to rotate, the rotating shaft 34 drives the gear 35 to rotate, so as to drive the inclined supporting rod 31 to move, after the length is adjusted, the first limiting block 313 enters the rectangular through hole 322 under the driving of the spring 314, and the inclined supporting rod 32 and the inclined supporting rod 31 are stabilized under the action of the second limiting block 315; and the inclined support rod 31 and the pit wall supporting and protecting plate 1 form a forty-five degree;
s3, fixing the bottom support assembly 4 on the bottom wall of the foundation pit, placing the bottom plate 41 on the bottom wall of the foundation pit, inserting one end of the driving rod 45 into the driving block 44, and rotating the driving rod 45 to drive the driving block 44 to rotate, so that the threaded pile 43 is driven to rotate and descend until the threaded pile penetrates into the ground;
s4, splicing the adjacent pit wall supporting and protecting plates 1 to connect all the pit wall supporting and protecting plates 1 together, inserting the inserting strip 222 on the first connecting plate 21 on the pit wall supporting and protecting plate 1 into the inserting groove 212 of the second connecting plate 22 on the left pit wall supporting and protecting plate 1 to realize the rotary connection between the adjacent pit wall supporting and protecting plates 1, and fixing the second connecting plate 22 and the inserting strip 222 by using bolts; then adjusting the angle between two adjacent pit wall supporting and protecting plates 1 according to the shape of the inner wall of the foundation pit, so that the pit wall supporting and protecting plates 1 can be attached to the inner wall of the foundation pit;
s5, using the uniform force reinforcement mechanism 5, installing the guide rail 51 on the pit wall supporting guard plate 1 by using bolts, sleeving the bearing 531 on the horizontal support rod 52, fixing the sleeving pipe 533 and the sleeving rod 534 by using bolts, and connecting the moving block 535 with the guide rail 51 by using bolts to limit the sliding of the moving block 535; therefore, the pit wall supporting and protecting plate 1 bears the stress not only at the contact part with the inclined supporting and protecting assembly 3, but also at the contact part with the uniform force reinforcing mechanism 5, so that the pit wall supporting and protecting plate 1 is not easy to deform due to overlarge local stress;
and S6, connecting the adjacent bottom plates 41, and connecting the threaded rod 471 on the bottom plate 41 with the internal threaded pipe 46 on the bottom plate 41 on one side, so that all the bottom plates 41 are connected into a whole, thereby uniformly bearing force and enhancing the supporting strength.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. Deep basal pit supporting construction, including pit wall fender board (1), its characterized in that: an inclined supporting assembly (3) is rotatably connected to the pit wall supporting and protecting plate (1), one end, far away from the pit wall supporting and protecting plate (1), of the inclined supporting assembly (3) is rotatably connected with a bottom supporting assembly (4), and a splicing assembly (2) is mounted on the pit wall supporting and protecting plate (1);
the inclined supporting component (3) comprises a first supporting block (36), the inner wall of the first supporting block (36) is rotatably connected with an inclined supporting rod (31) through a pin shaft, the outer wall of the inclined supporting rod (31) is connected with an inclined supporting rod (32) in a sliding way, a tooth socket (311) is arranged on the inclined supporting rod (31), teeth (310) are integrally formed on the inner wall of the tooth socket (311), first rectangular grooves (312) are formed on the inclined support rod (31) at equal intervals, a second limiting block (315) is welded on the inner wall of the first rectangular groove (312), the inner wall of the first rectangular groove (312) is rotationally connected with a first limit block (313) through a pin shaft, a spring (314) is fixedly connected with the outer wall of the first limit block (313), one end of the spring (314) far away from the first limit block (313) is fixedly connected with the inner wall of the first rectangular groove (312), rectangular through holes (322) are formed in the inclined supporting rods (32) at equal intervals;
a notch (321) is formed in the inclined supporting rod (32), the inclined supporting rod (31) is meshed with a gear (35) through a tooth (310), the inner wall of the gear (35) is fixedly connected with a rotating shaft (34), one end of the rotating shaft (34) is fixedly connected with a crank (30), two ends of the rotating shaft (34) are rotatably connected with a second supporting block (33) through bearings, the second supporting block (33) is detachably mounted on the inclined supporting rod (32), and the inner wall of the bottom end of the inclined supporting rod (32) is rotatably connected with a bottom plate (41);
the splicing assembly (2) comprises a first connecting plate (21) and a second connecting plate (22), and the first connecting plate (21) and the second connecting plate (22) are rotatably arranged on the side walls of the two ends of the pit wall supporting and protecting plate (1) through movable connecting assemblies (6) respectively;
an inserting groove (212) is formed in the second connecting plate (22), an inserting strip (222) is integrally formed at one end of the first connecting plate (21), and the inserting groove (212) is matched with the inserting strip (222) in size.
2. The deep foundation pit supporting structure according to claim 1, wherein the pit wall protecting plate (1) is provided with a groove (12), and a wave-shaped reinforcing plate (11) is embedded in the groove (12).
3. The deep foundation pit supporting structure according to claim 2, wherein the first supporting block (36) is installed on the pit wall supporting plate (1) by a bolt, and the second supporting block (33) is installed on the diagonal supporting bar (32) by a bolt.
4. The deep foundation pit supporting structure according to claim 3, wherein the bottom supporting assembly (4) comprises a bottom plate (41), a first fixing seat (421) is fixedly installed at the top end of the bottom plate (41), a first U-shaped rod (42) is inserted into the inner wall of the first fixing seat (421), a threaded pile (43) is connected to the inner wall of the first U-shaped rod (42) in a threaded mode, the outer wall of the threaded pile (43) is connected to the bottom plate (41) in a threaded mode, a driving block (44) is fixedly connected to the top end of the threaded pile (43), and a driving rod (45) is inserted into the inner wall of the driving block (44).
5. Deep foundation pit supporting construction according to claim 4, wherein the movable connection assembly (6) comprises a second fixed base (61), a first connecting rod (62) is inserted into the inner wall of the second fixed seat (61), one end of the first connecting rod (62) far away from the second fixed seat (61) is rotatably connected with a second U-shaped rod (63), a third fixed seat (64) is inserted into the outer wall of one end of the second U-shaped rod (63), the second U-shaped rod (63) is connected with the third fixed seat (64) through a bolt, the second fixed seat (61) is connected with the first connecting rod (62) through a bolt, the third fixed seat (64) is arranged on the side walls at the two ends of the pit wall supporting and protecting plate (1), and the second fixed seat (61) is arranged at one end of the first connecting plate (21) and one end of the second connecting plate (22) close to the pit wall supporting and protecting plate (1).
6. The deep foundation pit supporting structure according to claim 5, wherein a reinforcing connection assembly is installed at both sides of the bottom plate (41);
the reinforcing connecting assembly comprises a fourth fixing seat (411), a third U-shaped rod (412) is inserted into the inner wall of the fourth fixing seat (411), and the third U-shaped rod (412) is connected with the fourth fixing seat (411) through a bolt;
the outer wall of a third U-shaped rod (412) in the reinforcing connection assembly at the left end is rotatably connected with a second connecting rod (473), one end of the second connecting rod (473) is integrally provided with a hemispherical block (474), the outer wall of the second connecting rod (473) is slidably connected with a rectangular frame (472), and the outer wall of the rectangular frame (472) is fixedly connected with a threaded rod (471); the outer wall of a third U-shaped rod (412) in the reinforcing connecting assembly at the right end is rotatably connected with an internal threaded pipe (46).
7. The deep foundation pit supporting structure according to claim 6, further comprising a uniform force reinforcement mechanism (5);
the uniform force reinforcing mechanism (5) comprises a transverse supporting rod (52), and the outer wall of the transverse supporting rod (52) is rotatably connected with two groups of inclined reinforcing components (53);
the inclined reinforcing component (53) comprises a bearing (531) and a guide rail (51), the outer wall of the bearing (531) is fixedly connected with a sleeve pipe (533), the inner wall of the sleeve pipe (533) is connected with a sleeve rod (534) in a sliding way, the sleeve pipe (533) and the sleeve rod (534) are fixed through bolts, one end of the sleeve rod (534) far away from the bearing (531) is rotatably connected with a moving block (535) through a pin shaft, the two ends of the moving block (535) are fixedly connected with sliding blocks (536), the guide rail (51) is provided with a sliding groove (511), the inner wall of the sliding chute (511) is connected with the sliding block (536) in a sliding way, the guide rail (51) is arranged on the pit wall supporting plate (1) through a bolt, one end of the transverse support rod (52) is fixedly connected with an inclined support rod (31), the moving block (535) is connected with the guide rail (51) through a bolt, and internal threaded holes are formed in the guide rail (51) at equal intervals.
8. The deep foundation pit supporting structure according to claim 7, wherein the socket pipe (533) has a first internal threaded hole (5331) equidistantly formed, the socket rod (534) has a second internal threaded hole (5341) equidistantly formed, the first internal threaded hole (5331) and the second internal threaded hole (5341) have the same diameter, and the distance between adjacent first internal threaded holes (5331) is equal to the distance between adjacent second internal threaded holes (5341).
9. The deep foundation pit supporting structure according to any one of claims 1 to 8, wherein the pit wall supporting plate (1) is a hollow structure with an opening at one end, the first connecting plate (21) is provided with a third internal threaded hole (211), the second connecting plate (22) is provided with a fourth internal threaded hole (221), and the diameters of the third internal threaded hole (211) and the fourth internal threaded hole (221) are equal.
10. The method for performing deep foundation pit construction by using the deep foundation pit supporting structure of claim 9, characterized by comprising the following steps:
s1, placing the wave-shaped reinforcing plate (11) into the groove (12) of the pit wall supporting and protecting plate (1), and reinforcing the pit wall supporting and protecting plate (1) by using the wave-shaped reinforcing plate (11) to enhance the compression resistance;
s2, the pit wall support plate (1) is attached to the inner wall of the foundation pit, the lengths of the inclined support rod (32) and the inclined support rod (31) are adjusted, and the adjusting mode is as follows: the crank (30) is rotated to drive the rotating shaft (34) to rotate, the rotating shaft (34) drives the gear (35) to rotate so as to drive the inclined supporting rod (31) to move, after the length is adjusted, the first limiting block (313) enters the rectangular through hole (322) under the driving of the spring (314), and the inclined supporting rod (32) and the inclined supporting rod (31) are stabilized under the action of the second limiting block (315); and the inclined supporting rod (31) and the pit wall supporting and protecting plate (1) form a forty-five degree;
s3, fixing the bottom support assembly (4) on the bottom wall of the foundation pit, placing the bottom plate (41) on the bottom wall of the foundation pit, inserting one end of a driving rod (45) into a driving block (44), and rotating the driving rod (45) to drive the driving block (44) to rotate, so that the threaded pile (43) is driven to rotate and descend until the threaded pile penetrates into the ground;
s4, splicing adjacent pit wall supporting and protecting plates (1), connecting all the pit wall supporting and protecting plates (1) together, inserting the inserting strips (222) on the first connecting plates (21) on the pit wall supporting and protecting plates (1) into the inserting grooves (212) of the second connecting plates (22) on the left pit wall supporting and protecting plates (1) to realize the rotary connection between the adjacent pit wall supporting and protecting plates (1), and fixing the second connecting plates (22) and the inserting strips (222) by using bolts; then adjusting the angle between two adjacent pit wall supporting and protecting plates (1) according to the shape of the inner wall of the foundation pit, so that the pit wall supporting and protecting plates (1) can be attached to the inner wall of the foundation pit;
s5, using the uniform force reinforcing mechanism (5), installing the guide rail (51) on the pit wall supporting plate (1) by using bolts, sleeving the bearing (531) on the transverse supporting rod (52), fixing the sleeving pipe (533) and the sleeving rod (534) by using the bolts, and connecting the moving block (535) with the guide rail (51) by using the bolts to limit the sliding of the moving block (535); therefore, the pit wall supporting and protecting plate (1) bears the force not only at the contact part with the inclined supporting and protecting assembly (3) but also at the contact part with the uniform force reinforcing mechanism (5), so that the pit wall supporting and protecting plate (1) is not easy to deform due to overlarge local stress;
and S6, connecting the adjacent bottom plates (41), and connecting the threaded rod (471) on the bottom plate (41) with the internal threaded pipe (46) on the bottom plate (41) on one side, so that all the bottom plates (41) are connected into a whole, uniform stress can be applied, and the support strength is enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489700.6A CN114753379B (en) | 2022-05-07 | 2022-05-07 | Deep foundation pit supporting structure and deep foundation pit construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489700.6A CN114753379B (en) | 2022-05-07 | 2022-05-07 | Deep foundation pit supporting structure and deep foundation pit construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114753379A true CN114753379A (en) | 2022-07-15 |
| CN114753379B CN114753379B (en) | 2022-11-22 |
Family
ID=82335351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210489700.6A Active CN114753379B (en) | 2022-05-07 | 2022-05-07 | Deep foundation pit supporting structure and deep foundation pit construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114753379B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094910A (en) * | 2022-07-23 | 2022-09-23 | 四川优筑建设工程有限公司 | Foundation pit construction supporting device is built in room |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101556404B1 (en) * | 2015-02-27 | 2015-10-02 | (주)명광엔지니어링건축사사무소 | Unit type temporary retaining structure for building |
| CN209355915U (en) * | 2018-11-28 | 2019-09-06 | 广东至业建筑结构检测鉴定有限公司 | A kind of telescopic construction account device |
| CN210737557U (en) * | 2019-09-10 | 2020-06-12 | 北京岩土工程勘察院有限公司 | Foundation pit supporting structure |
| CN211922642U (en) * | 2020-03-07 | 2020-11-13 | 北京城乡中昊建设有限责任公司 | Foundation pit supporting device |
| CN112093571A (en) * | 2020-09-15 | 2020-12-18 | 吴全山 | Wire and cable pay-off device based on straightening mechanism and pay-off method thereof |
| CN112227383A (en) * | 2020-10-19 | 2021-01-15 | 许勇 | Safe type housing construction underground structure supporting device |
| CN212612512U (en) * | 2020-05-18 | 2021-02-26 | 广东南海国际建筑设计有限公司 | Folding type is strutting arrangement for foundation ditch with ventilative drainage effect |
| CN113235619A (en) * | 2021-06-15 | 2021-08-10 | 浙江晟威信息技术有限公司 | Highway engineering safety support device and manufacturing method thereof |
| CN214061640U (en) * | 2020-11-23 | 2021-08-27 | 中核华辰工程管理有限公司 | Foundation pit supporting structure |
| CN113957906A (en) * | 2021-10-27 | 2022-01-21 | 福建省华舜水利水电工程有限公司 | Pipeline anti-collapse supporting equipment for water conservancy construction |
| CN215805639U (en) * | 2021-09-17 | 2022-02-11 | 瑞安市恒发汽车部件有限公司 | Novel adjustable projection welding bolt |
-
2022
- 2022-05-07 CN CN202210489700.6A patent/CN114753379B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101556404B1 (en) * | 2015-02-27 | 2015-10-02 | (주)명광엔지니어링건축사사무소 | Unit type temporary retaining structure for building |
| CN209355915U (en) * | 2018-11-28 | 2019-09-06 | 广东至业建筑结构检测鉴定有限公司 | A kind of telescopic construction account device |
| CN210737557U (en) * | 2019-09-10 | 2020-06-12 | 北京岩土工程勘察院有限公司 | Foundation pit supporting structure |
| CN211922642U (en) * | 2020-03-07 | 2020-11-13 | 北京城乡中昊建设有限责任公司 | Foundation pit supporting device |
| CN212612512U (en) * | 2020-05-18 | 2021-02-26 | 广东南海国际建筑设计有限公司 | Folding type is strutting arrangement for foundation ditch with ventilative drainage effect |
| CN112093571A (en) * | 2020-09-15 | 2020-12-18 | 吴全山 | Wire and cable pay-off device based on straightening mechanism and pay-off method thereof |
| CN112227383A (en) * | 2020-10-19 | 2021-01-15 | 许勇 | Safe type housing construction underground structure supporting device |
| CN214061640U (en) * | 2020-11-23 | 2021-08-27 | 中核华辰工程管理有限公司 | Foundation pit supporting structure |
| CN113235619A (en) * | 2021-06-15 | 2021-08-10 | 浙江晟威信息技术有限公司 | Highway engineering safety support device and manufacturing method thereof |
| CN215805639U (en) * | 2021-09-17 | 2022-02-11 | 瑞安市恒发汽车部件有限公司 | Novel adjustable projection welding bolt |
| CN113957906A (en) * | 2021-10-27 | 2022-01-21 | 福建省华舜水利水电工程有限公司 | Pipeline anti-collapse supporting equipment for water conservancy construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094910A (en) * | 2022-07-23 | 2022-09-23 | 四川优筑建设工程有限公司 | Foundation pit construction supporting device is built in room |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114753379B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114753379B (en) | Deep foundation pit supporting structure and deep foundation pit construction method | |
| CN215329939U (en) | Removable supporting is used in building engineering construction | |
| JP2009013615A (en) | Construction method for prefabricated pile, and foundation bearing structure | |
| CN110295607B (en) | Larsen steel sheet pile supporting structure and supporting method | |
| CN116025069A (en) | Supporting steel structure | |
| CN108593463A (en) | A kind of pile-soil interface shearing mechanics characteristic test device | |
| CN106968603B (en) | A kind of broaching equipment being exclusively used on construction site | |
| JP6082614B2 (en) | Reconstruction method of existing building and pedestal for ground anchor | |
| CN111236649A (en) | Steel pipe support down tube with telescopic rod length and adjustable plug angle | |
| CN109267476B (en) | Sliding supporting device for bottom of support of bent and inclined bridge and transverse displacement adjusting method | |
| KR20140142902A (en) | Alternation pressure type foundation strengthening apparatus and method | |
| CN114164839B (en) | Foundation pit support device and construction method thereof | |
| CN112647703B (en) | Hydraulic climbing frame support installed on wall | |
| CN212001319U (en) | Foundation anchor rod static load test device | |
| CN211288461U (en) | Connecting structure for mechanical transmission device | |
| CN104589279B (en) | A kind of parallel slide valve specific purpose tool and the method for dismounting core assembly | |
| CN116180767B (en) | Deep foundation pit steel skeleton supporting bearing device | |
| CN113565692A (en) | Assembled large-scale wind driven generator tower | |
| CN220307092U (en) | Stator alignment adjusting device | |
| CN219826881U (en) | High-strength anti-deformation grouting anchor rod | |
| CN110593404B (en) | Steel structure channel steel connecting member | |
| CN218643389U (en) | Collapse-preventing supporting structure for foundation pit | |
| CN221277770U (en) | Adjustable supporting device | |
| CN113250202B (en) | Steel pipe support wedge block pre-tightening and failure prevention device and installation method | |
| CN220469919U (en) | A backstop device for construction of super large diameter push pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |