CN108149702B - Assembled open caisson wall of a well cutting edge structure - Google Patents
Assembled open caisson wall of a well cutting edge structure Download PDFInfo
- Publication number
- CN108149702B CN108149702B CN201810069942.3A CN201810069942A CN108149702B CN 108149702 B CN108149702 B CN 108149702B CN 201810069942 A CN201810069942 A CN 201810069942A CN 108149702 B CN108149702 B CN 108149702B
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- vertical plate
- wall
- well
- plate
- cutting edge
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- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005728 strengthening Methods 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
- E02D23/00—Caissons; Construction or placing of caissons
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Revetment (AREA)
Abstract
The invention discloses an assembled open caisson wall edge foot structure, which belongs to the field of bridge foundation, wherein the wall edge foot comprises an outer vertical plate, an inner vertical plate, a horizontal plate and a stiffening plate which are connected into a whole, and the wall edge foot is assembled on the open caisson wall through a counter-pulling screw; the outside vertical plate laminating wall of a well outside, the inboard vertical plate laminating wall of a well is inboard, the horizontal plate laminating wall of a well is at the bottom of the wall of a well, it is articulated with the wall of a well through passing the counter screw rod of wall of a well between outside vertical plate and the inboard vertical plate, outside vertical plate and inboard vertical plate all stretch out below the wall of a well, and outside vertical plate is longer than inboard vertical plate, right triangle's stiffening plate is located the horizontal plate below, connect outside vertical plate perpendicularly, inboard vertical plate and horizontal plate, the stiffening plate encloses the cutting edge of the wall of a well cutting edge of right triangle section structure with outside vertical plate, inboard vertical plate and horizontal plate. The invention is a novel open caisson wall blade foot structure which has reasonable stress, better economy and convenient construction.
Description
Technical Field
The invention belongs to the field of bridge foundations, and comprises a deepwater foundation and a land foundation.
Background
Along with the development of domestic bridge construction, large bridge foundations are continuously appeared. The bridge foundation commonly seen at present mainly comprises a pile foundation, an enlarged foundation and an open caisson foundation. The enlarged foundation is greatly influenced by geological conditions, and is less used in thicker covering layers or deep water; the pile foundation has the widest application range, but for a large bridge foundation, the pile foundation is adopted in a larger scale, and the engineering cost is high; the open caisson foundation has high rigidity and good integrity, and has a large development space in bridge construction.
The existing open caisson foundation cutting edge and the well wall are integrated, and the well wall and the cutting edge at the bottom of the partition wall are generally designed into wedge shapes in order to ensure that the open caisson sinks smoothly and reduce the frontal soil resistance of the bottom surface of the open caisson. With the current structure, there are two problems:
1. the blade feet are wedge-shaped, so that the area of the bottom of the open caisson is reduced. Because the open caisson mainly bears the vertical bending moment generated by dead weight in the sinking process, the bottom of the open caisson is in tension, if a wedge-shaped structure is adopted, the tension area is smaller, local strengthening treatment is needed to be carried out on the bottom, and the engineering quantity is increased.
2. Considering the stress of the well wall, the blade feet are made into a wedge shape, but a certain width is still reserved; meanwhile, in order to ensure sand casting in sinking of the sinking well, a large amount of external soil body is poured into the well, the structural safety and the stable posture are affected, and a certain depth of the cutting edge foot inserted into the soil is required to be ensured. Therefore, the well wall is large in supporting area in the sinking process of the open caisson, the sinking coefficient is reduced, and a certain difficulty is caused in sinking.
Therefore, the existing open caisson foundation cutting edge structure has certain defects in economy, construction convenience or stress rationality.
Disclosure of Invention
The invention aims at: the novel open caisson wall blade foot structure is reasonable in stress, good in economy and convenient to construct.
The aim of the invention is achieved by the following technical scheme:
the well wall cutting edge comprises an outer vertical plate, an inner vertical plate, a horizontal plate and a stiffening plate which are connected into a whole, and the well wall cutting edge is assembled on the well wall of the open caisson through a counter-pulling screw; the outside vertical plate laminating wall of a well outside, the inboard vertical plate laminating wall of a well is inboard, the horizontal plate laminating wall of a well is at the bottom of the wall of a well, it is articulated with the wall of a well through passing the counter screw rod of wall of a well between outside vertical plate and the inboard vertical plate, outside vertical plate and inboard vertical plate all stretch out below the wall of a well, and outside vertical plate is longer than inboard vertical plate, right triangle's stiffening plate is located the horizontal plate below, connect outside vertical plate perpendicularly, inboard vertical plate and horizontal plate, the stiffening plate encloses the cutting edge of the wall of a well cutting edge of right triangle section structure with outside vertical plate, inboard vertical plate and horizontal plate.
In the patent, the blade foot structure is assembled, the whole blade foot is integrated, the section of the blade foot is triangular, and the blade tip is convenient to insert into soil; the whole blade foot structure is connected with the open caisson well body into a whole by adopting a counter-pulling screw rod. The assembled blade feet are hinged with the open caisson well body, so that the open caisson well body can adapt to the deformation of the open caisson when the open caisson well body is bent, and the open caisson body is not directly involved in the stress of the open caisson body, therefore, the bottom of the open caisson can be arranged in an equal width mode, the stress area is increased, and the stress of the bottom of the open caisson is improved.
In addition, the open caisson wall blade foot adopts two vertical plates, horizontal plate and stiffening plate to constitute, and wherein the wall of a well outside vertical plate is greater than the inner wall vertical plate. With this construction, the blade foot can be kept inserted into the soil during the suction and sinking process, and the bottom soil is emptied, thereby facilitating sinking of the sinking well and effectively preventing sand casting.
Alternatively, the outer and inner vertical plates are free to slide vertically relative to the borehole wall.
As a further option, vertical oblong holes are formed in the outer vertical plate and the inner vertical plate, and the opposite-pulling screw rod penetrates through the oblong holes to be connected with the well wall. In this scheme, in order to accomplish the articulated between cutting edge foot structure and the well bore, the slotted hole is set up on two vertical boards that cutting edge foot structure and well bore are pasted to the counter-pulling screw rod, and cutting edge foot structure can vertically freely slide.
Alternatively, the outer vertical plate extends out of the bottom of the well wall by not less than 2m, and the tip of the well wall blade extends out of the bottom of the well wall by not less than 2m. In the scheme, the open caisson is further ensured to sink quickly, and sand casting is effectively prevented.
The foregoing inventive subject matter and various further alternatives thereof may be freely combined to form a plurality of alternatives, all of which are employable and claimed herein; and the invention may be freely combined between choices (of non-conflicting choices) and with other choices as well. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The invention has the beneficial effects that: the invention is a novel open caisson wall blade foot structure which has reasonable stress, better economy and convenient construction.
Drawings
FIG. 1 is an elevation sectional view of a caisson wall blade foot structure according to an embodiment of the present invention;
fig. 2 is a schematic view of a split screw with holes in a blade foot vertical steel plate.
In the figure, 1 is an outer side vertical plate, 2 is an inner side vertical plate, 3 is a horizontal plate, 4 is a stiffening plate, 5 is a counter-pulling screw, 6 is a well wall, 7 is a slotted hole, and 8 is a cutting edge.
Detailed Description
The invention will be further described with reference to specific examples and figures.
Referring to fig. 1, a well wall cutting edge structure of an assembled open caisson comprises an outer vertical plate 1, an inner vertical plate 2, a horizontal plate 3 and a stiffening plate 4 which are integrally connected, wherein the well wall cutting edge is assembled on a well wall 6 of the open caisson through a counter-pulling screw 5; outside vertical board 1 laminating wall of a well 6 outside, inside vertical board 2 laminating wall of a well 6 inboard, horizontal board 3 laminating wall of a well 6 end, hinge with wall of a well 6 through the counter screw 5 that passes wall of a well 6 between outside vertical board 1 and the inside vertical board 2, outside vertical board 1 and inside vertical board 2 all stretch out below wall of a well 6 end, and outside vertical board 1 is longer than inside vertical board 2, right triangle's stiffening plate 4 is located horizontal board 3 below, connect outside vertical board 1 perpendicularly, inside vertical board 2 and horizontal board 3, stiffening plate 4 encloses into the cutting edge 8 of the wall of a well cutting edge of right triangle section structure with outside vertical board 1, inside vertical board 2 and horizontal board 3. Alternatively, the outer vertical plate 1 and the inner vertical plate 2 can slide vertically and freely relative to the well wall 6, and referring to fig. 2, preferably, vertical oblong holes 7 are formed in the outer vertical plate 1 and the inner vertical plate 2, and the opposite-pulling screw 5 penetrates through the oblong holes 7 to be connected with the well wall 6. The outer vertical plate 1 extends out of the bottom of the well wall 6 to be not smaller than 2m, and the cutting edge 8 of the well wall cutting edge extends out of the bottom of the well wall 6 to be not smaller than 2m.
The cutting edge foot structure is integrated on a plane, and is convenient to manufacture and transport in factories, and the cutting edge foot structure is manufactured in blocks on the plane, wherein the blocks of the cutting edge foot structure correspond to the blocks of the steel shell of the well wall of the open caisson. The factory welds the corresponding vertical plates, horizontal plates, stiffening plates and the like of the cutting edge foot structure into a whole according to the blocks, and after the long round holes are formed on the inner and outer vertical plates which are attached to the well wall, the cutting edge foot is transported to a site plane for positioning, and the cutting edge foot is fixed by broken stones, cushion blocks and the like. And then the blocks are connected into a whole by welding.
After the block manufacturing of the steel shell of the well wall of the open caisson is completed, the steel shell is placed on the cutting edge on site, the cutting edge is connected with the steel shell of the well wall of the open caisson by using a split screw, and well body concrete is poured after the steel shell is connected into a whole.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (1)
1. An assembled open caisson wall of a well cutting edge structure which characterized in that: the well wall cutting edge comprises an outer side vertical plate, an inner side vertical plate, a horizontal plate and a stiffening plate which are connected into a whole, and the well wall cutting edge is assembled on the well wall of the open caisson through a counter-pulling screw; the outer side vertical plate is attached to the outer side of the well wall, the inner side vertical plate is attached to the inner side of the well wall, the horizontal plate is attached to the bottom of the well wall, the outer side vertical plate and the inner side vertical plate are hinged with the well wall through opposite-pulling screws penetrating through the well wall, the outer side vertical plate and the inner side vertical plate extend out of the position below the bottom of the well wall, the outer side vertical plate is longer than the inner side vertical plate, the right-angled triangle stiffening plate is located below the horizontal plate and is vertically connected with the outer side vertical plate, the inner side vertical plate and the horizontal plate, and the stiffening plate, the outer side vertical plate, the inner side vertical plate and the horizontal plate enclose the cutting edge of a well wall cutting edge of a right-angled triangle section structure; the outer vertical plate and the inner vertical plate can slide vertically and freely relative to the well wall; the outer vertical plate and the inner vertical plate are provided with vertical oblong holes, and the opposite-pulling screw rod passes through the oblong holes to be connected with the well wall; the outer vertical plate extends out of the bottom of the well wall by not less than 2m, and the cutting edge of the well wall extends out of the bottom of the well wall by not less than 2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069942.3A CN108149702B (en) | 2018-01-24 | 2018-01-24 | Assembled open caisson wall of a well cutting edge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069942.3A CN108149702B (en) | 2018-01-24 | 2018-01-24 | Assembled open caisson wall of a well cutting edge structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108149702A CN108149702A (en) | 2018-06-12 |
| CN108149702B true CN108149702B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810069942.3A Active CN108149702B (en) | 2018-01-24 | 2018-01-24 | Assembled open caisson wall of a well cutting edge structure |
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| Country | Link |
|---|---|
| CN (1) | CN108149702B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109295990A (en) * | 2018-11-26 | 2019-02-01 | 中国铁建大桥工程局集团有限公司 | A kind of band opening blade foot has bottom steel boxed cofferdam |
| CN111197316A (en) * | 2020-03-06 | 2020-05-26 | 中交第四航务工程勘察设计院有限公司 | Novel circular double-wave steel open caisson structure |
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|---|---|---|---|---|
| JP2000160834A (en) * | 1998-11-26 | 2000-06-13 | Kazuhiko Kishida | Step-up construction of concrete caisson |
| JP2001226993A (en) * | 2000-02-17 | 2001-08-24 | Hiroshi Saito | Ground improvement method used for basement caisson method and ground improvement device |
| JP2004092275A (en) * | 2002-09-03 | 2004-03-25 | Jfe Metal Products & Engineering Inc | Attitude controlling equipment and attitude control method in immersing caisson |
| KR100525355B1 (en) * | 2004-12-31 | 2005-11-02 | (주)삼도기술 | Caisson for constructing pier |
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| CN205475235U (en) * | 2016-03-30 | 2016-08-17 | 黄河水利职业技术学院 | Pile pulling device is assisted to excavator |
| CN106168033A (en) * | 2016-08-09 | 2016-11-30 | 岩土科技股份有限公司 | A kind of vertical mud and water balance constructing device |
| CN106245653A (en) * | 2016-08-09 | 2016-12-21 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN106854873A (en) * | 2017-02-22 | 2017-06-16 | 中铁科建有限公司 | A kind of engineering method and garage parking in precast spliced sinking type garage parking |
| CN107575023A (en) * | 2017-10-25 | 2018-01-12 | 中铁科建有限公司 | A kind of sliding formwork component and apply its caisson cutting edge layer slding form operation method |
| CN107630465A (en) * | 2017-11-17 | 2018-01-26 | 万保金 | Assembled circle underground space structure and its construction method |
| CN207862962U (en) * | 2018-01-24 | 2018-09-14 | 中交二航局第四工程有限公司 | A kind of assembled caisson wall cutting shoe structure |
-
2018
- 2018-01-24 CN CN201810069942.3A patent/CN108149702B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000160834A (en) * | 1998-11-26 | 2000-06-13 | Kazuhiko Kishida | Step-up construction of concrete caisson |
| JP2001226993A (en) * | 2000-02-17 | 2001-08-24 | Hiroshi Saito | Ground improvement method used for basement caisson method and ground improvement device |
| JP2004092275A (en) * | 2002-09-03 | 2004-03-25 | Jfe Metal Products & Engineering Inc | Attitude controlling equipment and attitude control method in immersing caisson |
| KR100525355B1 (en) * | 2004-12-31 | 2005-11-02 | (주)삼도기술 | Caisson for constructing pier |
| JP2008106468A (en) * | 2006-10-24 | 2008-05-08 | Shimizu Corp | Cutting-edge cleaning method for open-caisson construction method, and excavating equipment |
| CN102644296A (en) * | 2012-05-09 | 2012-08-22 | 东南大学 | Prefabricate assembly type pipe jacking working well |
| CN205475235U (en) * | 2016-03-30 | 2016-08-17 | 黄河水利职业技术学院 | Pile pulling device is assisted to excavator |
| CN106168033A (en) * | 2016-08-09 | 2016-11-30 | 岩土科技股份有限公司 | A kind of vertical mud and water balance constructing device |
| CN106245653A (en) * | 2016-08-09 | 2016-12-21 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN106854873A (en) * | 2017-02-22 | 2017-06-16 | 中铁科建有限公司 | A kind of engineering method and garage parking in precast spliced sinking type garage parking |
| CN107575023A (en) * | 2017-10-25 | 2018-01-12 | 中铁科建有限公司 | A kind of sliding formwork component and apply its caisson cutting edge layer slding form operation method |
| CN107630465A (en) * | 2017-11-17 | 2018-01-26 | 万保金 | Assembled circle underground space structure and its construction method |
| CN207862962U (en) * | 2018-01-24 | 2018-09-14 | 中交二航局第四工程有限公司 | A kind of assembled caisson wall cutting shoe structure |
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| Publication number | Publication date |
|---|---|
| CN108149702A (en) | 2018-06-12 |
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