CN201330400Y - Lapping type combined steel plate cofferdam - Google Patents
Lapping type combined steel plate cofferdam Download PDFInfo
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- CN201330400Y CN201330400Y CNU2008201136278U CN200820113627U CN201330400Y CN 201330400 Y CN201330400 Y CN 201330400Y CN U2008201136278 U CNU2008201136278 U CN U2008201136278U CN 200820113627 U CN200820113627 U CN 200820113627U CN 201330400 Y CN201330400 Y CN 201330400Y
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- cofferdam
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Abstract
A lapping type combined steel plate cofferdam is formed in the way that a plurality of steel plates are arranged at the periphery of a cofferdam and serve as the base materials, profile steel which serves as a stiffening rib is welded on the outer side of each steel plate and closed with another steel plate to form male and female lapped joint components, a plywood and a press bolt are arranged on the female connector along the joint line perpendicular to the steel plate surface, and a gasket is arranged on the male and the female connectors. The combined steel plate cofferdam overcomes the defects of a steel box cofferdam or a cofferdam with combined steel sheet piles and steel pipe piles in the prior art, and can be assembled block by block with good water tightness, thereby being suitable for pier construction in water, and solving the difficulty of the low pile steel cofferdams in shoal water; and moreover, the lapping type combined steel plate cofferdam has the advantages of repeated use, construction investment reduction, simplified construction procedure, accelerated construction progress, and construction cost conservation.
Description
Technical field
The utility model relates to bridge pier construction equipment in a kind of water, particularly shallow water low pile cap steel cofferdam.
Background technology
At present, generally there are steel bushing case (box), steel sheet-pile cofferdam etc. in the steel cofferdam that Bridge Pier Construction in the water, the particularly construction of shallow water low pile cap are adopted.Steel bushing case (box) is integral assembling, whole sinking, and large-scale construction auxiliary equipment and facility need be arranged, and construction sequence complexity, speed are slowly, the construction period is long, expense is big, and is for the big cushion cap of planar dimension, all the more so.In order to overcome the deficiency of present steel bushing case, steel sheet-pile cofferdam existence, in recent years, people have carried out some improvement to the cofferdam of this steel work, the Xiong Jianhui of five companies of group of for example middle iron bridge office is at " bridge construction " .2003 (B05) .-64-65, delivered the article of " design and construction of fore shaft formula precast-boxed cofferdam " on 68, adopted fore shaft formula precast-boxed cofferdam, combine the advantage of whole assembly formula precast-boxed cofferdam and steel sheet pile, when making construction cheap relatively, the assembly unit of cost and close up easy, positioning control is accurate.Chinese patent application number: 200810014099.5 titles: a kind of steel boxed cofferdam and recovery method thereof open (bulletin) number: CN101225663 discloses the patent of Shandong Province Road and Bridge Group Co, relate to a kind of steel boxed cofferdam and recovery method thereof, especially be applied to the steel boxed cofferdam and the recovery method thereof of deep foundation, Longspan Bridge cushion cap and pier stud construction.This invention steel open caisson comprises joint and coxopodite, is water-stop angle steel flange bolt between the two; Last joint comprises that material is the last nodal section plate of steel sheet material, and it laterally is evenly equipped with vertical rib, vertically is evenly equipped with horizontal ribs, is water-stop angle steel flange bolt between last nodal section plate; Coxopodite comprises that material is the coxopodite panel of steel sheet material, and the coxopodite panel laterally is evenly equipped with vertical rib, is removable being fastenedly connected between the coxopodite panel.It has the advantage of traditional open caisson and steel cofferdam, can reuse, and cost is low, and the shoveling amount is few, and is smaller to the influence of adjacent structure, and open caisson foundation is embedding darker, and good stability can support bigger load, and stagnant water effect is good.The Shanghai Municipal Engineering Design Research Institute has applied for that also name is called the patent of " a kind of steel sheet pile and steel pipe pile combined cofferdam and preparation method thereof ", application number: 200610025535.X, open (bulletin) number: CN1837512, this steel sheet pile and steel pipe pile combined cofferdam, it is characterized in that being provided with between two steel pipe piles a slice steel sheet pile at least, connect by tongue and groove between adjacent steel sheet pile and the steel pipe pile, the embedded depth of steel pipe pile and steel sheet pile is consistent.This invention is linked together with steel pipe pile and steel sheet pile, cofferdam structure and foundation pit enclosure structure are combined, both solved the sealing problem in the subaqueous work, the problem of Extra-Deep Foundation Pit under water is provided again, economical with materials, reduced the workload of the cofferdam scope and the cubic metre of earth and stone, easy construction, it is reasonable more economically to add the pattern foundation pit supporting structure form than other cofferdam.In addition, Shanghai Investigation Design ﹠ Research Institute has also applied for application number: 200720076400.6 patent, title: a kind of light section steel structure combined cofferdam, open (bulletin) number: CN201132960, it relates to a kind of light section steel structure combined cofferdam, comprises interconnective braced structures and leakage preventing structure.Described braced structures is served as reasons arranges bearing piles more and is arranged at the steel frame constructions that the top girder steel on the bearing pile is formed, and leakage preventing structure is a steel sheet pile.Be equipped with landing slab on the top girder steel of braced structures, form operation platform, for construction provides traffic aisle.The steel sheet pile leakage preventing structure encloses by steel that custom-designed gusset plate is connected on the steelframe braced structures of purlin, Steel Bolt and adaptation differential settlement.This combining structure to having bigger rigidity, can be resisted outside water pressure in level; The steel platform can bear bigger vertical working load, and all cofferdam loads all can import in the darker foundation soil by bearing pile.The layout of bearing pile can be avoided underground space structures such as subterranean tunnel, underground pipeline.
Above-mentioned disclosed steel boxed cofferdam or steel sheet pile and steel pipe pile combined cofferdam also exist complex structure, construction inconvenience, speed of application to wait shortcoming slowly, are not suitable for the construction of shallow water low pile cap.
Summary of the invention
The purpose of this utility model provides and a kind ofly can overcome steel boxed cofferdam or steel sheet pile and steel pipe pile combined cofferdam weak point in the prior art, have can block-by-block assembly unit, dense water can be good, bridge pier construction equipment in the water in the novel steel cofferdam of the effect that has cofferdam and template concurrently, solved the difficult problem in shallow water low pile cap steel cofferdam.
The technical scheme that its technical problem that solves the utility model adopts is:
The cofferdam around with some block plates as base material, every block plate outside welding shaped steel closes up formation negative and positive overlap joint member as stiffening rib and another block plate, be provided with clamping plate and hold-down bolt along joint line perpendicular to the steel plate face at famale connector, and sealing mat is set at the male and female connector place, behind the nut of bolting on, clamping plate compress sealing mat downwards with stiffening rib, just can play the antiseepage effect.
Above-described stiffening rib employing i iron or channel-section steel, band steel.
Above-described steel plate as base material, the steel plate outside are except the stiffening rib of butt welding negative and positive lap joint, and welding H-bar or channel-section steel, band steel, angle steel or herringbone steel etc. mainly play and strengthen the steel plate effect in addition.
The hold-down bolt of installing on the above-described negative and positive lap joint is several, to guarantee to connect the intensity and the sealing effectiveness of steel plate.
Above-described sealing mat adopt plastic mattress, rubber pad or can be under pressure state can water-tight metal gasket or non-metallic pad.
Above-described steel cofferdam, steel plate thickness, length, the model of stiffening rib shaped steel, density can be determined according to the depth of water and cushion cap high computational.
Above-described steel cofferdam, the joint of adjacent plate can vertically misplace along joint line, to adapt to irregular substrate.
Fix by U bolt between above-described steel cofferdam and positioning framework, unclamp the nut of U bolt after bearing platform construction is finished in the steel cofferdam outside, reach steel cofferdam and can conveniently remove also reusable purpose.
The utility model is applicable to the combined steel cofferdam of bridge shallow water low pile cap (the bottom depth of water generally is not more than 4 meters), can adopt earth rock cofferdam can't drain fully under the situation of carrying out bearing platform construction of catchmenting in the weir as the construction remedial measure because of bottom, cofferdam or substrate infiltration, its job practices is: will draw water in the earth rock cofferdam and keep low water stage, lay positioning framework in advance at the cushion cap periphery, spend requirement in order and vertically along positioning framework then, the gap requires block-by-block assembling combination steel cofferdam, and by fixture and frame fixation, bolting on compresses water-tight device, forms rigidity and the respond well whole cofferdam of close water.Suspend afterwards and draw water pouring underwater concrete back cover under the situation of water level balance inside and outside the cofferdam.After bottom concrete intensity reaches requirement, drain in the steel cofferdam again and catchment, carry out bearing platform construction in inside.Draw water to low water stage in the groove that externally earth rock cofferdam and combined steel plate cofferdam formed after bearing platform construction was finished, block-by-block is removed the combined steel plate cofferdam, and indirect labor's diving method is removed the combined steel plate cofferdam in case of necessity.
The beneficial effects of the utility model are: the cofferdam is the piecemeal assembly unit, and assembly unit dismounting operation is simple and efficient, avoids using large-scale equipment and facility, but and double as cushion cap template; The rigidity of structure and dense water can be good, reusable; Reduce construction and drop into, simplify construction sequence, accelerating construction progress, saving construction cost.
Description of drawings
Fig. 1 is the vertical view that the utility model overlap joint constitutes the cushion cap cofferdam.
Fig. 2 is that the utility model two block plates close up the structural representation that forms the negative and positive overlap joint.
Fig. 3 is the utility model male contact structural representation.
Fig. 4 is the utility model famale connector structural representation.
Component names among the figure: 1. steel plate, 2,3. shaped steel, 4,5. weld seam, 6. bolt, 7. sealing mat, 8. clamping plate, 9. nut.10. cushion cap (basis), 11. negative and positive overlap joint member
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 can recognize that the cofferdam of cushion cap 10 is to be closed up by some block plates to form negative and positive overlap joint member 11, and the outside in cushion cap cofferdam, overlap joint back is a stiffening rib.
In Fig. 2, on one side of steel plate 1 shaped steel 2 and steel plate 1 are welded (spot welding at interval), and will equidistantly arrange shape bolt 6 and shaped steel 2 welding formation famale connectors; Another side at steel plate 1 coplanar welds shaped steel 3 and steel plate 1 (spot welding adds the thin continuously weld seam waterproof of total length at interval), sealing mat 7 is pasted on shaped steel 3 forms male contacts.During assembly unit male contact is overlapped in famale connector and clamping plate 8 are inserted in every bolt 6, tighten nut 9 and clamp male and female connectors.
Can recognize the structure of steel plate 1 and shaped steel 2 and bolt 6 from the famale connector of the male contact of Fig. 3 and Fig. 4.Coupling together is exactly the shape of Fig. 2.
Claims (6)
1, a kind of overlapping combined steel plate cofferdam, it is characterized in that: the cofferdam around with some block plates as base material, every block plate outside welding shaped steel closes up formation negative and positive lap joint member as stiffening rib and another block plate, be provided with clamping plate and hold-down bolt along joint line perpendicular to the steel plate face at famale connector, and sealing mat be set at the male and female connector place.
2, overlapping combined steel plate according to claim 1 cofferdam is characterized in that: stiffening rib adopts i iron or channel-section steel, band steel.
3, overlapping combined steel plate according to claim 1 cofferdam, it is characterized in that: described steel plate as base material, the steel plate outside is except the stiffening rib of butt welding negative and positive lap joint, and also i iron or channel-section steel, band steel, angle steel or the herringbone steel of strengthening the steel plate effect played in welding in addition.
4, overlapping combined steel plate according to claim 1 cofferdam is characterized in that: the hold-down bolt of installing on the described negative and positive lap joint is several.
5, overlapping combined steel plate according to claim 1 cofferdam is characterized in that: described sealing mat adopt plastic mattress, rubber pad or can be under pressure state can water-tight metal gasket or non-metallic pad.
6, overlapping combined steel plate according to claim 1 cofferdam, it is characterized in that: described steel cofferdam, the joint of adjacent plate vertically misplaces along joint line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201136278U CN201330400Y (en) | 2008-12-05 | 2008-12-05 | Lapping type combined steel plate cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201136278U CN201330400Y (en) | 2008-12-05 | 2008-12-05 | Lapping type combined steel plate cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330400Y true CN201330400Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201136278U Expired - Lifetime CN201330400Y (en) | 2008-12-05 | 2008-12-05 | Lapping type combined steel plate cofferdam |
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| CN (1) | CN201330400Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444131A (en) * | 2011-10-25 | 2012-05-09 | 广东永基建筑基础有限公司 | Foundation pit support method and device |
| CN104975609A (en) * | 2015-07-14 | 2015-10-14 | 上海市水利工程集团有限公司 | Lock catch type steel tube pile cofferdam and construction method |
| CN105780790A (en) * | 2016-03-24 | 2016-07-20 | 浙江大学城市学院 | Construction method for close-embankment high-water-level-difference combined type steel sheet pile cofferdam underwater abutment |
| CN106149739A (en) * | 2016-08-26 | 2016-11-23 | 蚌埠市清泉环保有限责任公司 | Combination type cofferdam |
| CN110565667A (en) * | 2019-09-29 | 2019-12-13 | 中铁大桥局第九工程有限公司 | Steel sheet pile cofferdam with slip casting platform |
| CN111139848A (en) * | 2020-01-02 | 2020-05-12 | 中铁二局第五工程有限公司 | Steel cofferdam and assembling method thereof |
-
2008
- 2008-12-05 CN CNU2008201136278U patent/CN201330400Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444131A (en) * | 2011-10-25 | 2012-05-09 | 广东永基建筑基础有限公司 | Foundation pit support method and device |
| CN102444131B (en) * | 2011-10-25 | 2013-03-13 | 广东永基建筑基础有限公司 | Foundation pit support method |
| CN104975609A (en) * | 2015-07-14 | 2015-10-14 | 上海市水利工程集团有限公司 | Lock catch type steel tube pile cofferdam and construction method |
| CN105780790A (en) * | 2016-03-24 | 2016-07-20 | 浙江大学城市学院 | Construction method for close-embankment high-water-level-difference combined type steel sheet pile cofferdam underwater abutment |
| CN106149739A (en) * | 2016-08-26 | 2016-11-23 | 蚌埠市清泉环保有限责任公司 | Combination type cofferdam |
| CN106149739B (en) * | 2016-08-26 | 2018-06-08 | 蚌埠市清泉环保有限责任公司 | Combined type cofferdam |
| CN110565667A (en) * | 2019-09-29 | 2019-12-13 | 中铁大桥局第九工程有限公司 | Steel sheet pile cofferdam with slip casting platform |
| CN111139848A (en) * | 2020-01-02 | 2020-05-12 | 中铁二局第五工程有限公司 | Steel cofferdam and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 530011 No. 17 Zhonghua Road, the Guangxi Zhuang Autonomous Region, Nanning Patentee after: Guangxi road and bridge engineering Group Co., Ltd Address before: 530011 No. 17 Zhonghua Road, the Guangxi Zhuang Autonomous Region, Nanning Patentee before: Guangxi Zhuang Nationality Autonomous Region Highway Bridge Engineering Company |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |
|
| CX01 | Expiry of patent term |