CN114482077B - Foundation ditch intelligence braced system with impervious effect of antidetonation - Google Patents
Foundation ditch intelligence braced system with impervious effect of antidetonation Download PDFInfo
- Publication number
- CN114482077B CN114482077B CN202210383833.5A CN202210383833A CN114482077B CN 114482077 B CN114482077 B CN 114482077B CN 202210383833 A CN202210383833 A CN 202210383833A CN 114482077 B CN114482077 B CN 114482077B
- Authority
- CN
- China
- Prior art keywords
- supporting
- foundation pit
- frame
- butt
- positioning
- 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.)
- Expired - Fee Related
Links
- 230000000694 effects Effects 0.000 title claims abstract description 15
- 230000008093 supporting effect Effects 0.000 claims abstract description 172
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000003487 anti-permeability effect Effects 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000005086 pumping Methods 0.000 claims description 19
- 210000001503 joint Anatomy 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 32
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 27
- 238000009412 basement excavation Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
- E02D19/185—Joints between sheets constituting the sealing aprons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/101—Membranes permeable
- E02D2450/102—Membranes permeable for liquids
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention discloses an intelligent foundation pit supporting system with an anti-seismic and anti-permeability effect, which relates to the technical field of foundation pit supporting and comprises a main supporting frame, wherein a plurality of external supporting inserting plates and internal supporting inserting plates which are buckled end to end are arranged on the periphery of the main supporting frame, a rectangular foundation pit supporting structure is enclosed among the external supporting inserting plates, the internal supporting inserting plates and corner supporting plates, and an internal supporting assembly is arranged in the main supporting frame; four corners of the bottom surface of the rectangular frame are provided with drainage mechanisms; the connecting part between the outer supporting inserting plate and the corner supporting plate and the connecting part between the inner supporting inserting plate and the corner supporting plate are provided with anti-loosening mechanisms; according to the invention, through the matching of the external support inserting plate, the internal support inserting plate and the corner supporting plate, the support strength of the foundation pit peripheral soil layer is effectively improved, and the anti-seepage effect of water bodies in the foundation pit peripheral soil layer penetrating into the foundation pit is further improved through the anti-loosening mechanism; the stability and the impermeability of the main support frame and the foundation pit supporting structure surrounded by the main support frame to the foundation pit external soil support can be greatly improved through the internal support component.
Description
Technical Field
The invention relates to the technical field of foundation pit supporting, in particular to an intelligent foundation pit supporting system with an anti-seismic and anti-permeability effect.
Background
The foundation pit is an earth pit excavated at a foundation design position according to the foundation elevation and the foundation plane size, and the foundation pit engineering mainly comprises foundation pit supporting system design and construction and earth excavation and is system engineering with strong comprehensiveness; in the foundation pit engineering, an underground space is excavated downwards from the ground, and in order to ensure the stability of the foundation pit engineering, a horizontal supporting structure is usually arranged around the inside of the foundation pit; in the existing foundation pit engineering construction, especially for the foundation pit engineering with larger excavation width, a support system is erected inside the foundation pit so as to prevent the foundation pit after excavation from collapsing;
the braced system that sets up usually uses the steel stand to insert the form on stand pile foundation among the current foundation ditch engineering to the inside vertical braces of foundation ditch is realized to the steel stand, and the vertical braced system of above-mentioned form can play the effect of inside support to a certain extent, but can't fully ensure horizontal support structure's stability safety, and it has following several problems: the steel upright column belongs to a slender compression rod piece, the bearing capacity is mainly controlled by the integral stability, and the compression strength of steel cannot be fully exerted; meanwhile, a foundation pit supporting structure surrounded by the steel stand column needs to be additionally paved with a waterproof coiled material to prevent the water seepage phenomenon of a soil layer around the foundation pit into the foundation pit, but in the using operation of the additionally paved waterproof coiled material, the continuity of the waterproof coiled material is easy to break, a water stop steel plate needs to be welded at the broken part for special waterproof treatment, and the waterproof effect is difficult to guarantee; the defects greatly limit the application of the existing steel column type inner support system in the foundation pit construction, and influence the stable and safe construction of the foundation pit engineering; accordingly, there is a need for an improved solution to the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an intelligent foundation pit supporting system with an anti-seismic and anti-permeability function.
In order to achieve the purpose, the invention adopts the following technical scheme: the foundation pit intelligent supporting system with the anti-seismic and anti-permeability effects comprises a main supporting frame, wherein a plurality of external supporting insertion plates and internal supporting insertion plates which are buckled end to end are arranged on the periphery of the main supporting frame, corner supporting plates are buckled at corners of connecting positions between the external supporting insertion plates and the internal supporting insertion plates, a rectangular foundation pit supporting structure is enclosed among the external supporting insertion plates, the internal supporting insertion plates and the corner supporting plates, the main supporting frame is positioned in the upper part of the foundation pit supporting structure, and an internal supporting assembly for structure reinforcement is arranged inside the main supporting frame;
a rectangular frame is horizontally arranged in the lower part of the foundation pit supporting structure, a water collecting cavity is formed in the rectangular frame, and four corners of the bottom surface of the rectangular frame are respectively provided with a drainage mechanism for treating a water body at the bottom of the foundation pit; and a locking mechanism for resisting shock and seepage is arranged at the connecting part between the outer support inserting plate and the inner support inserting plate and between the outer support inserting plate and the corner supporting plate.
Preferably, the inner support assembly comprises diagonal steel beams arranged at four corners inside the main support frame, a cross top beam arranged inside the main support frame and butt bolts in threaded connection with two sides of the outer wall of each diagonal steel beam, the outer ends of the cross top beam are fixedly connected with the main support frame through bolts, and the inner ends of the butt bolts are fixedly connected with the main support frame; and a father-shaped anti-seismic support frame is horizontally arranged in a triangular space formed between the diagonal bracing steel beam and the main bracing frame, and the anti-seismic support frame is fixedly connected with the main bracing frame.
Preferably, the main support frame comprises connecting beam bodies fixedly connected with four outer ends of the cross top beam and right-angle beam bodies connected at corners between the connecting beam bodies, and the connecting beam bodies are fixedly butted with the right-angle beam bodies through bolts; fixing bolts are arranged on two sides of the outer end of the anti-seismic support frame, and the connecting beam body and the right-angle beam body are in secondary reinforcing connection through the fixing bolts on the anti-seismic support frame; and the butt bolts at the two ends of the diagonal bracing steel beam are fixedly connected with the connecting beam body.
Preferably, the drainage mechanism comprises a butt joint seat arranged at four corners of the bottom of the rectangular frame, a positioning inserted rod inserted in a notch at the bottom of the butt joint seat, butt joint pipes arranged at four corners inside the water collection cavity and water pumping pipes connected to the tops of the butt joint pipes, the top end of the water pumping pipe penetrates out of the water collecting cavity, the bottom end of the butt joint pipe penetrates into the notch of the butt joint seat, the periphery of the bottom surface of the butt joint seat is horizontally provided with an arc block, a limit cavity is arranged in the arc block, a limiting component for positioning the insertion rod for butt joint and fixation is arranged in the limiting cavity, a layer of sealing gasket is arranged on the inner top surface of the notch of the butt joint seat, the top end surface of the positioning inserted bar is provided with a water pumping groove, the periphery of the outer wall of the positioning inserted bar is vertically provided with a plurality of water seepage strip openings at equal intervals, and the bottom ends of the butt-joint pipes are hermetically inserted into the openings at the tops of the water pumping grooves of the positioning insertion rods.
Preferably, the limiting component comprises a bearing pin block horizontally movably arranged in the limiting cavity, a guide rod transversely fixedly connected to the middle part of the inner wall of the outer end of the limiting cavity, and a thrust spring movably sleeved on the guide rod, the upper part of the outer wall of the positioning inserted rod is fixedly sleeved with a limiting ring, and the inner end of the bearing pin block movably penetrates through the limiting cavity and movably abuts against the bottom surface of the limiting ring; a circle of anti-falling strips are protruded at the outer end of the surface of the bearing pin block, a guide groove matched with the guide rod is horizontally formed in the outer end surface of the bearing pin block, one end of the guide rod is movably inserted into the guide groove, and one end of the thrust spring is movably abutted to the outer end surface of the bearing pin block; the corner at the bottom of the inner end of the bearing pin block is arc-surface-shaped.
Preferably, a graded broken stone layer is filled in the water pumping groove, and an anti-sand filtering stone layer is arranged at the top of the graded broken stone layer; the outer wall that the butt joint pipe is located the collecting chamber all is equipped with strip mouth that draws water all around, a plurality of water conservancy diversion strip mouths have been seted up to the equal equidistance in week of butt joint intraductal circle wall lower part, all be equipped with the multiple-layer filtering screen cloth in the water conservancy diversion strip mouth.
Preferably, the anti-loosening mechanism comprises a positioning disk arranged at the top of the connecting part between the outer support inserting plate and the inner support inserting plate and between the outer support inserting plate and the corner supporting plate, positioning inserting plates arranged at two sides of the bottom surface of the positioning disk and threaded openings arranged at two sides of the top surface of the positioning disk in a front-back staggered manner, the inner part of the threaded opening is connected with a positioning bolt through threads, the two positioning inserting plates are arranged in a staggered way from front to back, the two ends of the external supporting inserting plate and the internal supporting inserting plate are both of U-shaped plate structures which are bent outwards, the corner supporting plate is of a hollow plate structure, and two edges at the inner ends of the corner supporting plates are provided with inner buckled edge folding structures, J-shaped anti-seepage hook plates are arranged at the outer ends of the bent plate structures of the outer supporting inserting plate and the inner ends of the edge folding structures of the corner supporting plates, the top surface of the anti-seepage hook plate is matched with a positioning bolt to be provided with a positioning screw hole, and the positioning inserting plate is inserted into the space at the bending part of the anti-seepage hook plate.
Preferably, equal screw thread through connection all around of main tributary strut frame inner wall has a plurality of tie bolt, the vertical arc lug that is equipped with on the inner wall of outer tributary strut picture peg, a plurality of thread grooves have been seted up to the equidistance on the inner wall of arc lug, tie bolt's outer end threaded connection is inside the thread groove of arc lug, all the other thread groove inside plugs that are not connected with tie bolt on the arc lug are equipped with the shutoff piece.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the matching of the external support inserting plate, the internal support inserting plate and the corner supporting plate, the support strength of the foundation pit peripheral soil layer is effectively improved, and the condition that water in the outer soil layer is prevented from permeating into the foundation pit is improved; the anti-seepage effect of water bodies in the soil layer at the periphery of the foundation pit penetrating into the foundation pit is further improved conveniently through the anti-loosening mechanism; the anti-seismic effect of the main support frame under the earthquake is greatly improved through the internal support assembly, and the conditions that the main support frame is loose in connection and the supporting force is reduced due to the vibration generated when heavy machinery passes through the periphery of the foundation pit are effectively avoided; the stability and the impermeability of the main support frame and the foundation pit supporting structure surrounded by the main support frame to the soil body support outside the foundation pit can be greatly improved; through drainage mechanism be convenient for take out the water in the foundation ditch fast, can carry out the anti-operation of straining to the water that gets into the intracavity that catchments through the setting of anti-filtration cloth simultaneously, effectively avoid causing a large amount of losses of the inside soil body of foundation ditch, and then be convenient for improve the stability of foundation ditch bottom soil layer to the security of foundation ditch in the work progress has been improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a partial cross-sectional view of a top view configuration of the present invention;
FIG. 3 is a front sectional view of the rectangular frame of the present invention;
FIG. 4 is a cross-sectional view of the positioning plunger structure of the present invention;
FIG. 5 is a sectional view of the structure of the portion A in FIG. 4 according to the present invention;
FIG. 6 is a schematic perspective view of the external bracing plate according to the present invention;
FIG. 7 is a schematic perspective view of the internal bracing plate according to the present invention;
FIG. 8 is a schematic structural view of the connection state of the external supporting inserting plate and the internal supporting inserting plate of the present invention;
FIG. 9 is a schematic top view of the external bracing plate according to the present invention;
FIG. 10 is a schematic top view of the positioning plate at the connection between the outer supporting insertion plate and the inner supporting insertion plate according to the present invention;
FIG. 11 is a top sectional view of the positioning bolt and the positioning insert plate of the present invention;
fig. 12 is a schematic front view of the positioning plate, the positioning bolt and the positioning insert plate according to the present invention.
Number in the figure: 1. a main support frame; 101. connecting the beam body; 102. a right-angled beam body; 2. an external supporting inserting plate; 3. an internal supporting flashboard; 4. a corner supporting plate; 5. a diagonal bracing steel beam; 6. a cross top beam; 7. a butt bolt; 8. an anti-seismic support frame; 9. positioning a plate; 10. tightening the bolts; 11. a rectangular frame; 12. a docking station; 13. positioning the inserted rod; 14. butt-joint pipes; 15. a water pumping pipe; 16. a filter cloth; 17. an arc-shaped block; 18. a bearing pin block; 19. a guide bar; 20. a thrust spring; 21. an arc-shaped bump; 22. positioning the bolt; 23. and positioning the inserting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The embodiment is as follows: referring to fig. 1-12, the foundation pit intelligent supporting system with anti-seismic and anti-permeability effects comprises a main supporting frame 1, wherein a plurality of external supporting inserting plates 2 and internal supporting inserting plates 3 which are buckled end to end are arranged around the main supporting frame 1, corner supporting plates 4 are buckled at corners of connecting positions between the external supporting inserting plates 2 and the internal supporting inserting plates 3, a rectangular foundation pit supporting structure is enclosed among the external supporting inserting plates 2, the internal supporting inserting plates 3 and the corner supporting plates 4, the main supporting frame 1 is positioned in the upper part of the foundation pit supporting structure, and an internal supporting assembly for structure reinforcement is arranged inside the main supporting frame 1; a rectangular frame 11 is horizontally arranged in the lower part of the foundation pit supporting structure, a water collecting cavity is formed in the rectangular frame 11, and four corners of the bottom surface of the rectangular frame 11 are respectively provided with a drainage mechanism for treating a water body at the bottom of the foundation pit; the connection part between the outer supporting inserting plate 2 and the inner supporting inserting plate 3 and the corner supporting plate 4 is provided with a locking mechanism for resisting shock and seepage; through the matching of the external support inserting plates 2, the internal support inserting plates 3 and the corner supporting plates 4, the supporting strength of a foundation pit peripheral soil layer is effectively improved, and the condition that water in an outer soil layer is prevented from permeating into the foundation pit is improved; the anti-seepage effect of water in the foundation pit peripheral soil layer permeating into the foundation pit is further improved through the anti-loosening mechanism; the anti-seismic effect of the main supporting frame 1 under the earthquake is greatly improved through the inner supporting component, and the conditions that the main supporting frame 1 is loose in connection and the supporting force is reduced due to the vibration generated when heavy machinery passes through the periphery of the foundation pit are effectively avoided; the stability and the impermeability of the main supporting frame 1 and the surrounded foundation pit supporting structure to the soil support outside the foundation pit can be greatly improved; be convenient for through drainage mechanism and take out the water in the foundation ditch fast, can carry out the anti-operation of straining to the water that gets into the intracavity that catchments through the setting of anti-filtration cloth 16 simultaneously, effectively avoid causing a large amount of losses of the inside soil body of foundation ditch, and then be convenient for improve the stability of foundation ditch bottom soil layer.
In the invention, the inner support assembly comprises diagonal support steel beams 5 arranged at four corners inside a main support frame 1, cross top beams 6 arranged inside the main support frame 1 and butt bolts 7 in threaded connection with two sides of the outer wall of the diagonal support steel beams 5, the outer ends of the cross top beams 6 are fixedly connected with the main support frame 1 through bolts, and the inner ends of the butt bolts 7 are fixedly connected with the main support frame 1; a father-shaped anti-seismic strut 8 is horizontally arranged in a triangular space formed between the diagonal bracing steel beam 5 and the main bracing frame 1, and the anti-seismic strut 8 is fixedly connected with the main bracing frame 1; the supporting effect on the main supporting frame 1 is greatly improved through the matching of the anti-seismic support frame 8 and the cross top beam 6, and meanwhile, the structural strength and the deformation resistance effect of the main supporting frame 1 can be enhanced. The main support frame 1 comprises connecting beam bodies 101 fixedly connected with four outer ends of the cross top beam 6 and right-angle beam bodies 102 connected to corners between the connecting beam bodies 101, and the connecting beam bodies 101 and the right-angle beam bodies 102 are fixedly butted in advance through bolts; fixing bolts are arranged on two sides of the outer end of the anti-seismic strut 8, and the connecting beam body 101 and the right-angle beam body 102 are in secondary reinforcing connection through the fixing bolts on the anti-seismic strut 8; the butt bolts 7 at the two ends of the diagonal bracing steel beam 5 are fixedly connected with the connecting beam body 101, so that the main bracing frame 1 is convenient to assemble and splice, and the carrying and transportation operation are convenient.
The drainage mechanism comprises butt-joint seats 12 arranged at four corners of the bottom of a rectangular frame 11, positioning inserted rods 13 inserted in notches at the bottoms of the butt-joint seats 12, butt-joint pipes 14 arranged at four corners inside a water collecting cavity and water pumping pipes 15 connected to the tops of the butt-joint pipes 14, wherein the top ends of the water pumping pipes 15 penetrate through the outside of the water collecting cavity, the bottom ends of the butt-joint pipes 14 penetrate into notches of the butt-joint seats 12, arc-shaped blocks 17 are horizontally arranged on the periphery of the bottom surface of the butt-joint seats 12, limiting cavities are formed inside the arc-shaped blocks 17, limiting assemblies used for butt-joint fixing of the positioning inserted rods 13 are arranged inside the limiting cavities, a layer of sealing gasket is arranged on the inner top surface of the notches of the butt-joint seats 12, a water pumping groove is formed in the top end surface of the positioning inserted rods 13, graded gravel layers are filled in the water pumping groove, and anti-filtering gravel layers are arranged at the tops of the graded gravel layers; the peripheries of the outer walls of the butt joint pipes 14 in the water collecting cavity are all provided with water pumping strip openings, the peripheries of the lower parts of the inner ring walls of the butt joint pipes 14 are all provided with a plurality of guide strip openings at equal intervals, and the guide strip openings are all internally provided with a plurality of layers of filter screen cloth, so that the anti-filtration effect on a water body is improved conveniently, and the soil body at the bottom of a foundation pit is prevented from being largely lost; the side equidistance of week of location inserted bar 13 outer wall is vertical to be seted up a plurality of infiltration strip mouths, all is equipped with anti-filtration cloth 16 in the infiltration strip mouth, and sealed the pegging graft in the pumping groove top opening of location inserted bar 13 of the bottom of butt joint pipe 14 is convenient for carry out filtering operation to the water of taking out.
In the invention, the limiting component comprises a bearing pin block 18 horizontally movably arranged in the limiting cavity, a guide rod 19 transversely fixedly connected to the middle part of the inner wall of the outer end of the limiting cavity and a thrust spring 20 movably sleeved on the guide rod 19, the upper part of the outer wall of the positioning inserted rod 13 is fixedly sleeved with a limiting ring, and the inner end of the bearing pin block 18 movably penetrates out of the limiting cavity and movably abuts against the bottom surface of the limiting ring; a circle of anti-falling strips are protruded at the outer end of the surface of the bearing pin block 18, a guide groove matched with the guide rod 19 is horizontally formed in the outer end face of the bearing pin block 18, one end of the guide rod 19 is movably inserted into the guide groove, and one end of the thrust spring 20 is movably abutted to the outer end face of the bearing pin block 18; the bottom corner of the inner end of the bearing pin block 18 is arc-shaped, so that the inserted positioning inserted rod 13 can be limited and fixed conveniently, and the rectangular frame 11 and the positioning inserted rod 13 can be spliced automatically.
In the invention, the anti-loosening mechanism comprises a positioning disk 9 arranged at the top of the connecting part between an outer supporting inserting plate 2 and an inner supporting inserting plate 3 and between the outer supporting inserting plate 2 and a corner supporting plate 4, positioning inserting plates 23 arranged at two sides of the bottom surface of the positioning disk 9 and threaded openings arranged at two sides of the top surface of the positioning disk 9 in a front-back staggered manner, positioning bolts 22 are connected in the threaded openings in a threaded manner, the two positioning inserting plates 23 are arranged in a front-back staggered manner, two ends of the outer supporting inserting plate 2 and the inner supporting inserting plate 3 are both of U-shaped plate structures bent outwards, the corner supporting plate 4 is of a hollow plate structure, two edges of the inner end of the corner supporting plate 4 are provided with inner buckling edge folding structures, J-shaped anti-seepage hook plates are arranged at the outer ends of the bent plate structures of the outer supporting inserting plate 2 and the inner supporting inserting plate 3 and the inner ends of the edge folding structures of the corner supporting plate 4, positioning screw holes are formed in the top surfaces of the anti-seepage hook plates by matching with the positioning bolts 22, and the positioning inserting plate 23 is inserted into a space at the bending part of the anti-seepage hook plate; the situation that the water in the foundation pit peripheral soil layer permeates into the foundation pit due to looseness of the outer supporting inserting plates 2, the inner supporting inserting plates 3 and the corner supporting plates 4 after fastening is effectively avoided, and the seepage-proofing effect of the water in the foundation pit peripheral soil layer permeating into the foundation pit is effectively improved.
According to the invention, the periphery of the inner wall of the main support frame 1 is in threaded through connection with a plurality of tensioning bolts 10, the inner wall of the outer support inserting plate 2 is vertically provided with an arc-shaped convex block 21, the inner wall of the arc-shaped convex block 21 is equidistantly provided with a plurality of thread grooves, the outer end of each tensioning bolt 10 is in threaded connection with the inside of each thread groove of the arc-shaped convex block 21, and the insides of the rest thread grooves which are not connected with the tensioning bolts 10 on the arc-shaped convex block 21 are plugged with plugging blocks, so that the connecting strength of the main support frame 1 and the outer support inserting plate 2 is improved, and the main support frame 1 is convenient to install and fix.
The working principle is as follows: in this embodiment, the invention further provides a use method of the foundation pit intelligent support system with the anti-seismic and anti-permeability effects, which comprises the following steps:
firstly, a measurer lofts an excavation point position of a foundation pit through a total station, marks a line on the range of the lofted foundation pit, then performs preliminary shallow layer excavation on the foundation pit, and then inserts an outer supporting inserting plate 2, an inner supporting inserting plate 3 and a corner supporting plate 4 into a soil layer one by one along the line-drawn point position through an engineering board inserting machine, and then enables the outer supporting inserting plate 2, the inner supporting inserting plate 3 and the corner supporting plate 4 to form a head-position buckling state, thereby forming a stable foundation pit supporting structure;
Secondly, digging out a soil body within a range surrounded by the foundation pit supporting structure through an excavator, wherein when the foundation pit is dug through the excavator, mechanical digging operation cannot be conducted to a designed elevation in one step, a disturbance-resistant soil layer of 30 centimeters is reserved above the designed elevation, then, manual digging is conducted on the foundation pit and is completed, and then, the digging operation can be stopped until the designed elevation dug to the bottom of the foundation pit is higher, so that the stability and the bearing capacity of the bottom soil layer of the foundation pit are effectively improved;
thirdly, after a foundation pit supporting structure is formed through the external supporting inserting plate 2, the internal supporting inserting plate 3 and the corner supporting plate 4, in order to avoid gaps and looseness in buckling connection among the external supporting inserting plate 2, the internal supporting inserting plate 3 and the corner supporting plate 4, the positioning disc 9 with the positioning inserting plates 23 is fixed to the top of a buckling connection position among the external supporting inserting plate 2, the internal supporting inserting plate 3 and the corner supporting plate 4 through the positioning bolts 22, and therefore the situation that water in a foundation pit peripheral soil layer permeates into the foundation pit due to looseness after buckling of the external supporting inserting plate 2, the internal supporting inserting plate 3 and the corner supporting plate 4 is effectively avoided, and the seepage-proofing effect of the water in the foundation pit peripheral soil layer permeating into the foundation pit is effectively improved;
step four, in order to further stabilize the formed foundation pit supporting structure, horizontally erecting a main supporting frame 1 at the upper part inside the surrounded foundation pit supporting structure, and enabling the main supporting frame 1 to be stably connected with an arc-shaped convex block 21 on an outer supporting inserting plate 2 through a tensioning bolt 10, so that the horizontally installed main supporting frame 1 plays a role in stably supporting an opening at the upper part of the foundation pit supporting structure, the situations of necking and collapsing caused by the pressure of soil mass on the soil mass are effectively avoided, and the surrounded foundation pit supporting structure is convenient to stably support the soil mass around the foundation pit;
Step five, horizontally installing the cross top beam 6 inside the main supporting frame 1, further stably and internally supporting the frame bodies on four sides of the main supporting frame 1, and then additionally installing the diagonal bracing steel beams 5 at four corners inside the main supporting frame 1 and the anti-seismic support frame 8 arranged in a space between the diagonal bracing steel beams 5 and the main supporting frame 1 in order to improve the overall anti-seismic performance, so that the anti-seismic effect of the main supporting frame 1 in a seismic process is greatly improved, and the situations that the connection of the main supporting frame 1 is loosened and the supporting force is reduced due to the vibration generated when heavy machinery passes through the periphery of a foundation pit are effectively avoided; the stability and the impermeability of the main supporting frame 1 and the surrounded foundation pit supporting structure to the soil body support outside the foundation pit can be greatly improved.
Step six, after the upper part of the foundation pit supporting structure is stably supported, a rectangular frame 11 with a water collecting cavity is horizontally arranged at the bottom of the foundation pit, further, the water accumulated in the foundation pit and the reverse-seepage water at the bottom of the foundation pit can be concentrated and discharged in rainy days, the positioning insertion rod 13 is inserted into the soil at the bottom of the foundation pit, then the rectangular frame 11 is seated on the top of the positioning insertion rod 13, so that the top end of the positioning insertion rod 13 is inserted into the notch at the bottom of the butt joint seat 12, then the supporting pin block 18 is pushed into the limiting cavity during the insertion of the positioning insertion rod 13, then, after the positioning inserted link 13 is completely inserted into the slot at the bottom of the docking seat 12, the thrust of the bearing pin block 18 is lost, then under the action of a thrust spring 20, the bearing pin block 18 is pushed to extend out of the limiting cavity, and the inserted positioning insertion rod 13 is further subjected to stable anti-falling function; then the top end of the water pumping pipe 15 is communicated with an external water pumping pump; when depositing water in the foundation ditch, through the cooperation of drinking-water pipe 15 with drainage mechanism, be convenient for take out the water in the foundation ditch fast, can carry out the anti-operation of straining to the water that gets into the intracavity that catchments through the setting of anti-filtration cloth 16 simultaneously, effectively avoid causing a large amount of losses of the inside soil body of foundation ditch, and then be convenient for improve the stability on foundation ditch bottom soil layer.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. Foundation ditch intelligence braced system with impervious effect of antidetonation, including main stay frame (1), its characterized in that: the foundation pit supporting structure is characterized in that a plurality of outer supporting insertion plates (2) and inner supporting insertion plates (3) which are buckled end to end are arranged on the periphery of the main supporting frame (1), corner supporting plates (4) are buckled at corners of connecting positions between the outer supporting insertion plates (2) and the inner supporting insertion plates (3), a rectangular foundation pit supporting structure is enclosed among the outer supporting insertion plates (2), the inner supporting insertion plates (3) and the corner supporting plates (4), the main supporting frame (1) is located in the upper portion of the foundation pit supporting structure, and inner supporting components for structure reinforcement are arranged inside the main supporting frame (1);
a rectangular frame (11) is horizontally arranged in the lower part of the foundation pit supporting structure, a water collecting cavity is formed in the rectangular frame (11), and four corners of the bottom surface of the rectangular frame (11) are respectively provided with a drainage mechanism for treating a water body at the bottom of the foundation pit; a locking mechanism for shock resistance and permeability resistance is arranged at the connecting part between the outer supporting inserting plate (2), the inner supporting inserting plate (3) and the corner supporting plate (4);
The anti-loosening mechanism comprises a positioning disk (9) arranged at the top of a joint between an outer support inserting plate (2) and an inner support inserting plate (3) and between the outer support inserting plate (2) and a corner supporting plate (4), a positioning inserting plate (23) arranged on two sides of the bottom surface of the positioning disk (9) and threaded openings staggered from front to back on two sides of the top surface of the positioning disk (9), wherein the threaded openings are internally and threadedly connected with positioning bolts (22) in a staggered manner, the two ends of the outer support inserting plate (2) and the inner support inserting plate (3) are U-shaped plate-shaped structures bent outwards, the corner supporting plate (4) is a hollow plate body structure, two edges at the inner end of the corner supporting plate (4) are provided with inner buckling edge structures, the outer end of the outer support inserting plate (2) and the inner support inserting plate (3) and the inner end of the edge structures of the corner supporting plate (4) are provided with J-shaped anti-seepage hook plates, the top surfaces of the anti-seepage hook plates are provided with positioning screw holes in a matching manner with the positioning bolts (22), and the positioning inserting plates (23) are inserted into the spaces of the bending parts of the anti-seepage hook plates;
the drainage mechanism comprises butt-joint seats (12) arranged at four corners of the bottom of a rectangular frame (11), positioning inserted rods (13) inserted in notches at the bottoms of the butt-joint seats (12), butt-joint pipes (14) arranged at four corners inside a water collecting cavity and water pumping pipes (15) connected to the tops of the butt-joint pipes (14), wherein the top ends of the water pumping pipes (15) penetrate out of the water collecting cavity, the bottom ends of the butt-joint pipes (14) penetrate into the notches of the butt-joint seats (12), arc-shaped blocks (17) are horizontally arranged on the periphery of the bottom surface of the butt-joint seats (12), limiting cavities are formed in the arc-shaped blocks (17), limiting assemblies used for butt-joint fixing of the positioning inserted rods (13) are arranged inside the limiting cavities, a layer of sealing gaskets is arranged on the inner top surfaces of the notches of the butt-joint seats (12), water pumping grooves are formed in the peripheral side surfaces of the top ends of the positioning inserted rods (13), and a plurality of water seepage strip openings are vertically formed in the outer walls of the positioning inserted rods (13), the water seepage mouths are all provided with anti-filtration cloth (16), and the bottom ends of the butt joint pipes (14) are hermetically inserted into the openings at the top of the water pumping grooves of the positioning insertion rods (13);
The limiting component comprises a bearing pin block (18) horizontally and movably arranged in the limiting cavity, a guide rod (19) transversely and fixedly connected to the middle part of the inner wall of the outer end of the limiting cavity, and a thrust spring (20) movably sleeved on the guide rod (19), the upper part of the outer wall of the positioning inserted rod (13) is fixedly sleeved with a limiting ring, and the inner end of the bearing pin block (18) movably penetrates out of the limiting cavity and movably abuts against the bottom surface of the limiting ring; a circle of anti-falling strips are protruded at the outer end of the surface of the bearing pin block (18), a guide groove matched with the guide rod (19) is horizontally formed in the outer end surface of the bearing pin block (18), one end of the guide rod (19) is movably inserted into the guide groove, and one end of the thrust spring (20) is movably abutted to the outer end surface of the bearing pin block (18); the corner at the bottom of the inner end of the bearing pin block (18) is arc-surface-shaped;
a graded broken stone layer is filled in the water pumping groove, and an anti-sand filtering stone layer is arranged at the top of the graded broken stone layer; the outer wall that butt joint pipe (14) are located the intracavity that catchments all is equipped with strip mouth that draws water all around, a plurality of water conservancy diversion strip mouths have been seted up to equal equidistance in week of butt joint pipe (14) inner circle wall lower part, all be equipped with the multilayer filter screen cloth in the water conservancy diversion strip mouth.
2. The foundation pit intelligent supporting system with the earthquake-resistant and anti-permeability effects as claimed in claim 1, wherein: the inner support assembly comprises diagonal support steel beams (5) arranged at four corners inside the main support frame (1), cross top beams (6) arranged inside the main support frame (1) and butt bolts (7) in threaded connection with two sides of the outer wall of each diagonal support steel beam (5), the outer ends of the cross top beams (6) are fixedly connected with the main support frame (1) through bolts, and the inner ends of the butt bolts (7) are fixedly connected with the main support frame (1); an anti-seismic strut (8) in a father character shape is horizontally arranged in a triangular space formed between the diagonal bracing steel beam (5) and the main bracing frame (1), and the anti-seismic strut (8) is fixedly connected with the main bracing frame (1).
3. The foundation pit intelligent supporting system with the earthquake-resistant and anti-permeability effects as claimed in claim 2, wherein: the main support frame (1) comprises connecting beam bodies (101) fixedly connected with four outer ends of the cross top beam (6) and right-angle beam bodies (102) connected at corners between the connecting beam bodies (101), and the connecting beam bodies (101) and the right-angle beam bodies (102) are fixedly butted in advance through bolts; fixing bolts are arranged on two sides of the outer end of the anti-seismic support frame (8), and the connecting beam body (101) and the right-angle beam body (102) are connected in a secondary reinforcing mode through the fixing bolts on the anti-seismic support frame (8); and the butt-joint bolts (7) at the two ends of the diagonal bracing steel beam (5) are fixedly connected with the connecting beam body (101).
4. The foundation pit intelligent supporting system with the earthquake-resistant and anti-permeability effects as claimed in claim 1, wherein: all around equal screw thread through connection of main tributary strut frame (1) inner wall has a plurality of tie bolt (10), vertically on the inner wall of outer tributary strut picture peg (2) be equipped with arc lug (21), a plurality of thread grooves have been seted up to the equidistance on the inner wall of arc lug (21), the outer end threaded connection of tie bolt (10) is inside the thread groove of arc lug (21), all the other thread groove inside stopper that are not connected with tie bolt (10) are equipped with the shutoff piece on arc lug (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383833.5A CN114482077B (en) | 2022-04-13 | 2022-04-13 | Foundation ditch intelligence braced system with impervious effect of antidetonation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383833.5A CN114482077B (en) | 2022-04-13 | 2022-04-13 | Foundation ditch intelligence braced system with impervious effect of antidetonation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114482077A CN114482077A (en) | 2022-05-13 |
| CN114482077B true CN114482077B (en) | 2022-06-28 |
Family
ID=81487946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210383833.5A Expired - Fee Related CN114482077B (en) | 2022-04-13 | 2022-04-13 | Foundation ditch intelligence braced system with impervious effect of antidetonation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114482077B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324089A (en) * | 2022-08-16 | 2022-11-11 | 王新华 | Deep foundation pit structure with drainage side wall gushes water |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207444A (en) * | 2000-01-28 | 2001-08-03 | Taisei Corp | Impervious wall and its construction method |
| CN206245309U (en) * | 2016-12-06 | 2017-06-13 | 南京博睿工程咨询有限公司 | A kind of waterproof steel plate stake |
| CN207714336U (en) * | 2017-12-12 | 2018-08-10 | 济南昊兴市政工程有限公司 | A kind of deep basal pit closing fast rainfall guard system |
| CN109610487A (en) * | 2018-11-30 | 2019-04-12 | 福建建中建设科技股份有限公司 | A kind of Larsen steel sheet-pile cofferdam and its construction method |
| CN109653225A (en) * | 2018-12-30 | 2019-04-19 | 安徽省公路桥梁工程有限公司 | Steel sheet-pile cofferdam and its construction method |
| CN211006693U (en) * | 2019-10-17 | 2020-07-14 | 湖北广元岩土工程有限公司 | Based on emergent supporting construction that consolidates of energy station foundation ditch |
| CN211395686U (en) * | 2019-09-25 | 2020-09-01 | 广东省建筑工程集团有限公司 | Foundation pit supporting system next to existing dangerous building |
| CN214460540U (en) * | 2021-03-29 | 2021-10-22 | 河北港口集团港口工程有限公司 | Safety support device for wharf cofferdam |
| CN214574003U (en) * | 2021-04-08 | 2021-11-02 | 宁夏夯中岩土工程有限公司 | Foundation pit support convenient to drainage |
| CN215562739U (en) * | 2021-06-11 | 2022-01-18 | 中铁十局集团青岛工程有限公司 | Caisson template structure with water foundation pit |
-
2022
- 2022-04-13 CN CN202210383833.5A patent/CN114482077B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207444A (en) * | 2000-01-28 | 2001-08-03 | Taisei Corp | Impervious wall and its construction method |
| CN206245309U (en) * | 2016-12-06 | 2017-06-13 | 南京博睿工程咨询有限公司 | A kind of waterproof steel plate stake |
| CN207714336U (en) * | 2017-12-12 | 2018-08-10 | 济南昊兴市政工程有限公司 | A kind of deep basal pit closing fast rainfall guard system |
| CN109610487A (en) * | 2018-11-30 | 2019-04-12 | 福建建中建设科技股份有限公司 | A kind of Larsen steel sheet-pile cofferdam and its construction method |
| CN109653225A (en) * | 2018-12-30 | 2019-04-19 | 安徽省公路桥梁工程有限公司 | Steel sheet-pile cofferdam and its construction method |
| CN211395686U (en) * | 2019-09-25 | 2020-09-01 | 广东省建筑工程集团有限公司 | Foundation pit supporting system next to existing dangerous building |
| CN211006693U (en) * | 2019-10-17 | 2020-07-14 | 湖北广元岩土工程有限公司 | Based on emergent supporting construction that consolidates of energy station foundation ditch |
| CN214460540U (en) * | 2021-03-29 | 2021-10-22 | 河北港口集团港口工程有限公司 | Safety support device for wharf cofferdam |
| CN214574003U (en) * | 2021-04-08 | 2021-11-02 | 宁夏夯中岩土工程有限公司 | Foundation pit support convenient to drainage |
| CN215562739U (en) * | 2021-06-11 | 2022-01-18 | 中铁十局集团青岛工程有限公司 | Caisson template structure with water foundation pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114482077A (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114482077B (en) | Foundation ditch intelligence braced system with impervious effect of antidetonation | |
| CN106284296A (en) | Supporting structure of double-row steel sheet piles and construction method thereof | |
| CN212452676U (en) | Foundation pit supporting system | |
| CN108612111B (en) | Steel pipe pile, foundation pit support structure and construction method of foundation pit support structure | |
| CN115949082B (en) | Cofferdam structure and construction method thereof | |
| CN207159990U (en) | One kind combination steel construction support pile | |
| CN113882896A (en) | Underground recyclable flexible filling retaining wall and construction method thereof | |
| CN212835453U (en) | Cofferdam for hydraulic engineering | |
| CN109736295B (en) | Vertical supporting system of building structure and construction method thereof | |
| CN214169118U (en) | Support deep basal pit cofferdam structure in large-scale combination hasp pile | |
| CN214737800U (en) | Hydraulic engineering is with slope protection net of dismouting of being convenient for | |
| CN112982377A (en) | Novel precast pile | |
| CN114182719A (en) | Anti-floating pile for underground chamber foundation | |
| CN210887256U (en) | Straight combined sheet pile-ground wall-connecting type frame of water retaining cofferdam | |
| CN113802569A (en) | Steel sleeve node for connecting inner support-enclosure structure of steel pipe | |
| CN112502159A (en) | Method for solidifying foundation pit peripheral soil body | |
| CN215105425U (en) | Steel sheet pile cofferdam convenient to equipment for engineering construction | |
| CN216474833U (en) | Assembled dam seepage-proofing structure | |
| CN219773007U (en) | Water intaking head construction fore shaft steel-pipe pile cofferdam | |
| CN114108648B (en) | Soft soil foundation pit stirring pile wall cantilever retaining structure | |
| CN219909028U (en) | Foundation pit template structure convenient to construct | |
| CN217537018U (en) | Steel-pipe pile cofferdam water retaining structure before reservoir dam | |
| CN114427229B (en) | Deep foundation pit diagonal bracing supporting structure and diagonal bracing supporting method thereof | |
| CN214832813U (en) | Additional strengthening for water conservancy construction cofferdam | |
| CN219343267U (en) | Combined cofferdam of steel pipe pile and Lasen steel sheet pile |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |