CN109469071B - Connecting piece for foundation pit supporting structure and foundation pit supporting structure - Google Patents
Connecting piece for foundation pit supporting structure and foundation pit supporting structure Download PDFInfo
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- CN109469071B CN109469071B CN201811614401.0A CN201811614401A CN109469071B CN 109469071 B CN109469071 B CN 109469071B CN 201811614401 A CN201811614401 A CN 201811614401A CN 109469071 B CN109469071 B CN 109469071B
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- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 238000000926 separation method Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- 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)
- Joining Of Building Structures In Genera (AREA)
- Foundations (AREA)
Abstract
A connecting piece for a foundation pit supporting structure and the foundation pit supporting structure comprise a coaming, a first layer of coaming , a second layer of coaming , a third layer of coaming , a fourth layer of coaming and a connecting piece for the foundation pit supporting structure; a plurality of surrounding plates enclose into hollow tubular structure, first layer encloses , second layer encloses , third layer encloses and fourth layer encloses top-down in proper order and sets up perpendicularly on tubular structure inside wall, and every layer encloses and all fixes on tubular structure inside wall through a plurality of connecting pieces that are used for foundation ditch supporting structure. The two ends of the connecting piece for the foundation pit supporting structure are connected through the bolts, so that the contact area with the connecting piece is large, the connection is more stable, meanwhile, the connecting piece main body is positioned on the concave surface of the second L-shaped connecting plate, and the second L-shaped connecting plate is used for connecting the main body and key points of the coaming, so that the contact area is large, and the material consumption is saved; and the support plate, the inclined plate and the second L-shaped connecting plate form a right triangle, so that the stability of the whole connecting part is further improved.
Description
Technical Field
The invention belongs to the field of deep foundation pit supporting structures, and particularly relates to a connecting piece for a foundation pit supporting structure and the foundation pit supporting structure.
Background
The construction operation commonly encountered in the support construction of the deep foundation pit in the construction of the continuous beam of the coastal high-speed super-large bridge is particularly important in the selection of the support structure when facing the deep foundation pit of the water-rich silt close to the river; the existing supporting structure cannot well control the structure, is close to a river channel and a construction channel, has larger lateral pressure, is easy to cause foundation pit deformation, and causes unstable foundation pit structure and extremely low safety coefficient; the existing structure has the defects that the length of the cross brace is large, the cross brace is easy to bend and deform under the influence of dead weight, and the whole structure is unstable.
Disclosure of Invention
The invention aims to provide a connecting piece for a foundation pit supporting structure and the foundation pit supporting structure so as to solve the problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a connecting piece for a foundation pit supporting structure comprises a connecting piece main body, a first L-shaped connecting plate and a second L-shaped connecting plate; one end of the connecting piece main body is fixedly provided with two first L-shaped connecting plates, and the lower end of the connecting piece main body is fixedly provided with a second L-shaped connecting plate.
Furthermore, the connecting piece main body is I-steel, one surface of the second L-shaped connecting plate is fixedly welded on the lower flange of the connecting piece main body, and the connecting piece main body is positioned on the concave surface of the second L-shaped connecting plate; the other end of the connecting piece main body is welded with the other surface of the second L-shaped connecting plate; the length of the face of the second L-shaped connecting plate welded with the lower flange of the connecting piece main body is larger than that of the connecting piece main body.
Further, a support plate and an inclined plate are welded on the lower surface of the second L-shaped connecting plate, and the support plate, the inclined plate and the second L-shaped connecting plate form a right triangle; the support plate is flush with the other surface of the second L-shaped connecting plate; and a plurality of bolt holes are formed in the support plate and the other surface of the second L-shaped connecting plate.
Further, one face of each of the two first L-shaped connecting plates is fixed on the web plate of the connecting piece main body through bolts, and the other face of each of the two first L-shaped connecting plates is flush with the end part of the connecting piece main body.
Further, a foundation pit supporting structure comprises a coaming, a first layer of coaming , a second layer of coaming , a third layer of coaming , a fourth layer of coaming and a connecting piece for the foundation pit supporting structure; a plurality of surrounding plates enclose into hollow tubular structure, first layer encloses , second layer encloses , third layer encloses and fourth layer encloses top-down in proper order and sets up perpendicularly on tubular structure inside wall, and every layer encloses and all fixes on tubular structure inside wall through a plurality of connecting pieces that are used for foundation ditch supporting structure.
Further, the first layer of enclosure comprises a steel pipe, a first inclined support, a second inclined support and an inclined support connecting rod; the four steel pipes are welded to form a rectangular frame, the four middle points of the four steel pipes are fixedly connected through bolts to form a quadrangular frame, four right-angle triangles are formed at the four corners of the rectangular frame, and first inclined supports are fixedly arranged between the middle points of two right-angle sides of each right-angle triangle through bolts; and a diagonal brace connecting rod is fixedly arranged between any two adjacent second diagonal braces through bolts.
Further, the second layer includes a steel pipe, a first connecting rod and a four-way joint; four steel pipes are welded into a rectangular frame, four first connecting rods are sequentially connected into separation rods through four-way connectors, the two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, first connecting rods are fixedly welded between the four-way connectors between the two separation rods, and first connecting rods are vertically and fixedly welded between the four-way connectors on the two separation rods and the steel pipes on two sides to form a second layer of enclosure with twelve rectangular frames; the second and third enclosures , are identical in construction.
Further, the fourth layer includes a steel pipe, a second connecting rod and a four-way joint; four steel pipes are welded into a rectangular frame, five second connecting rods are connected into separation rods sequentially through four-way connectors, two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, the second connecting rods are fixedly welded between the four-way connectors between the two separation rods, the second connecting rods are vertically and fixedly welded between the four-way connectors on the two separation rods and the steel pipes on two sides, and a fourth layer of enclosure with twenty rectangular frames is formed.
Further, a supporting plate of the connecting piece for the foundation pit supporting structure is fixedly arranged on the inner side wall of the cylindrical structure through bolts, a first L-shaped connecting plate on the other side is fixedly arranged on the periphery through bolts, and a part of the second L-shaped connecting plate, which is longer than the connecting piece main body, is fixedly arranged on the lower surface of the periphery through bolts.
Further, a plurality of vertical connecting rods are fixedly welded between the second layer of enclosure and the third layer of enclosure and between the third layer of enclosure and the fourth layer of enclosure .
Compared with the prior art, the invention has the following technical effects:
the two ends of the connecting piece for the foundation pit supporting structure are connected through the bolts, so that the contact area with the connecting piece is large, the connection is more stable, meanwhile, the connecting piece main body is positioned on the concave surface of the second L-shaped connecting plate, and the second L-shaped connecting plate is used for connecting the main body and key points of the coaming, so that the contact area is large, and the material consumption is saved; the support plate, the inclined plate and the second L-shaped connecting plate form a right triangle, so that the stability of the whole connecting part is further improved;
the connecting piece, the coaming and the enclosure are connected by bolts, so that the connecting piece is convenient to detach and reutilize while being connected and fastened.
The foundation pit supporting structure comprises a multi-layer enclosing structure, wherein one layer encloses to enclose a multi-triangle structure, so that the stability is strong, the lateral pressure resistance capability is strong, and the instability of the whole structure of the cross brace caused by the influence of dead weight is reduced. The second layer, the third layer and the fourth layer are of a multi-grid structure, the structure from top to bottom is more and more compact, the deformation of the foundation pit can be effectively controlled, the structure of the enclosure is stable, and the safety coefficient is high; the connecting piece that the cooperation was used for foundation ditch supporting construction avoids the welding, improves construction speed, reduces the construction degree of difficulty.
The vertical connecting rods are arranged between the lower three-layer enclosure , so that the three-layer enclosure is further combined into a whole, and the stability is enhanced.
Drawings
FIG. 1 is a diagram of the overall structure of the present invention;
FIG. 2 is a diagram of a first layer of the present invention;
FIG. 3 is a diagram of the structure of the second and third enclosures of the present invention;
FIG. 4 is a diagram of a fourth layer of the present invention;
fig. 5 is a block diagram of a connector for a foundation pit supporting structure according to the present invention.
Wherein: 1. coaming plate; 2. a second layer ; 3. a third layer ; 4. a fourth layer ; 5. a first layer ; 6. a vertical connecting rod; 8. a steel pipe; 9. a first diagonal brace; 10. a second diagonal brace; 11. a diagonal support connecting rod; 12. a first link; 13. a four-way joint; 14. a second link; 15. a connector body; 16. a second L-shaped connecting plate; 17. a support plate; 18. a first L-shaped connecting plate; 19. and a sloping plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1 to 5, a connector for a foundation pit supporting structure includes a connector body 15, a first L-shaped connecting plate 18 and a second L-shaped connecting plate 16; two first L-shaped connecting plates 18 are fixedly arranged at one end of the connecting piece main body 15, and a second L-shaped connecting plate 16 is fixedly arranged at the lower end of the connecting piece main body 15;
the connecting piece main body 15 is I-shaped steel, one surface of the second L-shaped connecting plate 16 is fixedly welded on the lower flange of the connecting piece main body 15, and the connecting piece main body 15 is positioned on the concave surface of the second L-shaped connecting plate 16; the second L-shaped connecting plate is used for connecting key points of the main body and the coaming, so that the contact area is large and the material consumption is saved; the other end of the connecting piece main body 15 is welded with the other surface of the second L-shaped connecting plate 16; the second L-shaped connection plate 16 welded to the lower flange of the connector body 15 has a longer face length than the connector body 15. Both ends are the face contact, and area of contact with the connecting piece is big, connects more stably.
The lower surface of the second L-shaped connecting plate 16 is welded with a support plate 17 and an inclined plate 19, and the support plate 17, the inclined plate 19 and the second L-shaped connecting plate 16 form a right triangle, so that the stability of the whole connecting part is further improved; the support plate 17 is flush with the other surface of the second L-shaped connecting plate 16; the support plate 17 and the other surface of the second L-shaped connecting plate 16 are provided with a plurality of bolt holes.
One face of each of the two first L-shaped connection plates 18 is fixed to the web of the connector body 15 by bolts, and the other face of the first L-shaped connection plate 18 is flush with the end of the connector body 15. The connecting piece, the coaming and the enclosure are connected by bolts, so that the connecting piece is convenient to detach and reutilize while being connected and fastened.
The foundation pit supporting structure comprises a coaming, a first layer of coaming , a second layer of coaming , a third layer of coaming , a fourth layer of coaming and a connecting piece for the foundation pit supporting structure; a plurality of surrounding plates enclose into a hollow tubular structure, a first layer of surrounding , a second layer of surrounding , a third layer of surrounding and a fourth layer of surrounding 4 are sequentially and vertically arranged on the inner side wall of the tubular structure from top to bottom, and each layer of surrounding is fixed on the inner side wall of the tubular structure through a plurality of connecting pieces for a foundation pit supporting structure.
The first layer of enclosure comprises a steel pipe 8, a first inclined support 9, a second inclined support 10 and an inclined support connecting rod 11; the four steel pipes 8 are welded to form a rectangular frame, the four middle points of the four steel pipes 8 are fixedly connected through bolts to form a quadrangular frame, four corners of the rectangular frame form four right-angle triangles, and a first inclined support 9 is fixedly arranged between the middle points of two right-angle sides of each right-angle triangle through bolts; a diagonal brace connecting rod 11 is fixedly arranged between any two adjacent second diagonal braces 10 through bolts. One layer of the wall is of a multi-triangle structure, and is strong in stability and lateral pressure resistance. The steel pipe of phi 630 x 6mm is used as the layer of steel pipe.
The second layer comprises a steel pipe 8, a first connecting rod 12 and a four-way joint 13; four steel pipes 8 are welded into a rectangular frame, four first connecting rods 12 are sequentially connected into separation rods through four-way connectors 13, the two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, the first connecting rods 12 are fixedly welded between the four-way connectors 13 between the two separation rods, the first connecting rods 12 are vertically and fixedly welded between the four-way connectors 13 on the two separation rods and the steel pipes 8 on two sides, and a second layer of enclosure with twelve rectangular frames is formed; the second enclosure and the third enclosure are identical in structure. The steel pipe of phi 630 x 6mm is used as the layer of steel pipe.
The fourth layer comprises a steel pipe 8, a second connecting rod 14 and a four-way joint 13; four steel pipes 8 are welded into a rectangular frame, five second connecting rods 14 are sequentially connected into separation rods through four-way connectors 13, two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, the second connecting rods 14 are fixedly welded between the four-way connectors 13 between the two separation rods, the second connecting rods 14 are vertically and fixedly welded between the four-way connectors 13 on the two separation rods and the steel pipes 8 on two sides, and a fourth layer of enclosure with twenty rectangular frames is formed. The second layer, the third layer and the fourth layer are of a multi-grid structure, the structure from top to bottom is more and more compact, the deformation of the foundation pit can be effectively controlled, the structure of the enclosure is stable, and the safety coefficient is high. The steel pipe with the diameter of 813 mm is used as the layer of steel pipe.
One side of a support plate 17 of a connecting piece for a foundation pit supporting structure is fixedly arranged on the inner side wall of the cylindrical structure through bolts, a first L-shaped connecting plate 18 on the other side is fixedly arranged on a periphery through bolts, and a part of a second L-shaped connecting plate 16 longer than the connecting piece main body 15 is fixedly arranged on the lower surface of the periphery through bolts.
A plurality of vertical connecting rods 6 are fixedly welded between the second layer of enclosure and the third layer of enclosure and between the third layer of enclosure and the fourth layer of enclosure 4. The three layers of the enclosure are further combined into a whole, so that the stability is enhanced.
Claims (7)
1. The foundation pit supporting structure is characterized by comprising a coaming (1), a first layer of coaming (5), a second layer of coaming (2), a third layer of coaming (3), a fourth layer of coaming (4) and a connecting piece for the foundation pit supporting structure; the plurality of surrounding plates are surrounded into a hollow cylindrical structure, the first layer of surrounding plates (5), the second layer of surrounding plates (2), the third layer of surrounding plates (3) and the fourth layer of surrounding plates (4) are sequentially and vertically arranged on the inner side wall of the cylindrical structure from top to bottom, and each layer of surrounding plates is fixed on the inner side wall of the cylindrical structure through a plurality of connecting pieces for the foundation pit supporting structure;
the first layer of enclosure (5) comprises a steel pipe (8), a first inclined support (9), a second inclined support (10) and an inclined support connecting rod (11); the four steel pipes (8) are welded to form a rectangular frame, second inclined supports (10) are fixedly connected between four middle points of the four steel pipes (8) through bolts to form a quadrangular frame, four right-angled triangles are formed at four corners of the rectangular frame, and first inclined supports (9) are fixedly arranged between the middle points of two right-angled edges of each right-angled triangle through bolts; a diagonal brace connecting rod (11) is fixedly arranged between any two adjacent second diagonal braces (10) through bolts;
the second layer of enclosure (2) comprises a steel pipe (8), a first connecting rod (12) and a four-way joint (13); four steel pipes (8) are welded into a rectangular frame, four first connecting rods (12) are sequentially connected into separation rods through four-way connectors (13), the two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, the first connecting rods (12) are fixedly welded between the four-way connectors (13) between the two separation rods, the first connecting rods (12) are vertically and fixedly welded between the four-way connectors (13) on the two separation rods and the steel pipes (8) on two sides, and a second layer of enclosure (2) with twelve rectangular frames is formed; the second layer of enclosure (2) and the third layer of enclosure (3) have the same structure;
the fourth layer of enclosure (4) comprises a steel pipe (8), a second connecting rod (14) and a four-way joint (13); four steel pipes (8) are welded into a rectangular frame, five second connecting rods (14) are sequentially connected into separation rods through four-way connectors (13), two separation rods are vertically and equidistantly arranged on two opposite sides in the rectangular frame, the second connecting rods (14) are fixedly welded between the four-way connectors (13) between the two separation rods, the second connecting rods (14) are vertically and fixedly welded between the four-way connectors (13) on the two separation rods and the steel pipes (8) on two sides, and a fourth layer of the rectangular frame with twenty pieces of (4) is formed.
2. A foundation pit supporting structure according to claim 1, comprising a connector body (15), a first L-shaped connection plate (18) and a second L-shaped connection plate (16); one end of the connecting piece main body (15) is fixedly provided with two first L-shaped connecting plates (18), and the lower end of the connecting piece main body (15) is fixedly provided with a second L-shaped connecting plate (16).
3. The foundation pit supporting structure according to claim 2, wherein the connecting piece main body (15) is i-steel, one surface of the second L-shaped connecting plate (16) is fixedly welded on the lower flange of the connecting piece main body (15), and the connecting piece main body (15) is positioned on the concave surface of the second L-shaped connecting plate (16); the other end of the connecting piece main body (15) is welded with the other surface of the second L-shaped connecting plate (16); the length of the face of the second L-shaped connecting plate (16) welded with the lower flange of the connecting piece main body (15) is larger than the length of the connecting piece main body (15).
4. A foundation pit supporting structure according to claim 3, wherein the lower surface of the second L-shaped connecting plate (16) is welded with a support plate (17) and an inclined plate (19), and the support plate (17), the inclined plate (19) and the second L-shaped connecting plate (16) form a right triangle; the support plate (17) is flush with the other surface of the second L-shaped connecting plate (16); and a plurality of bolt holes are formed in the support plate (17) and the other surface of the second L-shaped connecting plate (16).
5. A foundation pit supporting structure according to claim 3, wherein one face of the two first L-shaped connection plates (18) is fixed to the web of the connector body (15) by bolts, respectively, and the other face of the first L-shaped connection plates (18) is flush with the end of the connector body (15).
6. A foundation pit supporting structure according to claim 1, wherein the supporting plate (17) of the connecting member for the foundation pit supporting structure is provided on one side on the inner side wall of the tubular structure by bolting, the first L-shaped connecting plate (18) on the other side is provided on the enclosure by bolting, and the portion of the second L-shaped connecting plate (16) longer than the connecting member main body (15) is provided on the lower surface of the enclosure by bolting.
7. The foundation pit supporting structure according to claim 1, wherein a plurality of vertical connecting rods (6) are fixedly welded between the second layer of enclosure (2) and the third layer of enclosure (3) and between the third layer of enclosure (3) and the fourth layer of enclosure (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811614401.0A CN109469071B (en) | 2018-12-27 | 2018-12-27 | Connecting piece for foundation pit supporting structure and foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811614401.0A CN109469071B (en) | 2018-12-27 | 2018-12-27 | Connecting piece for foundation pit supporting structure and foundation pit supporting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109469071A CN109469071A (en) | 2019-03-15 |
| CN109469071B true CN109469071B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811614401.0A Active CN109469071B (en) | 2018-12-27 | 2018-12-27 | Connecting piece for foundation pit supporting structure and foundation pit supporting structure |
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| Country | Link |
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| CN (1) | CN109469071B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103469802A (en) * | 2013-09-29 | 2013-12-25 | 中国一冶集团有限公司 | Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure |
| CN204311458U (en) * | 2014-10-31 | 2015-05-06 | 上海市政交通设计研究院有限公司 | A kind of well construction foundation ditch sizing bracing members |
| CN206128085U (en) * | 2016-10-28 | 2017-04-26 | 广东省水利水电第三工程局有限公司 | Supporting device is consolidated to foundation ditch |
| CN108978680A (en) * | 2018-08-22 | 2018-12-11 | 中天建设集团有限公司 | A kind of muck soil elevator foundation pit supporting construction device and method |
| CN209368845U (en) * | 2018-12-27 | 2019-09-10 | 上海绿地建设(集团)有限公司 | A kind of connector and foundation pit supporting construction for foundation pit supporting construction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200467021Y1 (en) * | 2010-04-05 | 2013-05-27 | 주식회사 비앤비엠스틸 | Step coupling device propping |
-
2018
- 2018-12-27 CN CN201811614401.0A patent/CN109469071B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469802A (en) * | 2013-09-29 | 2013-12-25 | 中国一冶集团有限公司 | Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure |
| CN204311458U (en) * | 2014-10-31 | 2015-05-06 | 上海市政交通设计研究院有限公司 | A kind of well construction foundation ditch sizing bracing members |
| CN206128085U (en) * | 2016-10-28 | 2017-04-26 | 广东省水利水电第三工程局有限公司 | Supporting device is consolidated to foundation ditch |
| CN108978680A (en) * | 2018-08-22 | 2018-12-11 | 中天建设集团有限公司 | A kind of muck soil elevator foundation pit supporting construction device and method |
| CN209368845U (en) * | 2018-12-27 | 2019-09-10 | 上海绿地建设(集团)有限公司 | A kind of connector and foundation pit supporting construction for foundation pit supporting construction |
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| CN109469071A (en) | 2019-03-15 |
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