CN201891123U - Single-wall steel hanging box with concrete bottom plate - Google Patents
Single-wall steel hanging box with concrete bottom plate Download PDFInfo
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- CN201891123U CN201891123U CN2010206080115U CN201020608011U CN201891123U CN 201891123 U CN201891123 U CN 201891123U CN 2010206080115 U CN2010206080115 U CN 2010206080115U CN 201020608011 U CN201020608011 U CN 201020608011U CN 201891123 U CN201891123 U CN 201891123U
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Abstract
The utility model belongs to the technical field of caissons and particularly relates to a single-wall steel hanging box with a concrete bottom plate, which is adopted in a cofferdam method for building a deepwater foundation of a large-size bridge. The single-wall steel hanging box comprises a bottom plate and a plurality of lateral plates, the bottom plate and the lateral plates are supported on a steel casing through brackets to complete splicing and sinking, the bottom plate is of a concrete structure, the lateral plates are arranged on the periphery of the concrete-structure bottom plate in a fastening way, and thus, a cofferdam structure is formed. The single-wall steel hanging box provided by the utility model has the advantages of good safety, concise structure, convenience for construction and low cost. The steel hanging box with the concrete bottom plate belongs to the series of single-wall steel hanging boxes, the wall plate of the steel hanging box can be used as a bearing-platform template directly and also plays the role of resisting water temporarily for creating a construction environment without water inside, and thus, the consumed steel can be furthest saved; and the concrete bottom plate can be used as a bearing platform and a protective layer directly and does not need recycling, so that the reduction of steel consumption is facilitated. Because the disposable concrete bottom plate structure is adopted and does not need to be dismounted after construction, construction time and expense are greatly decreased.
Description
Technical field
The utility model belongs to the caisson technical field, specifically refers to the cofferdam method and builds a kind of concrete floor single-arm steel hanging box that the large bridge deep water foundation adopts.
Background technology
When in high near, the shallow sea of the great rivers that The water is deep and the current fast or damp Pu wave, adopting the cofferdam method to build the large bridge deep water foundation, because bridge crosses the difference of conditions such as the hydrology, geology, meteorology, navigation channel at place, and a kind of cofferdam structure form and job practices thereof that all bridge foundations are built that be suitable for can not be arranged.The waterproof cofferdam of adopting during at present, the bridge deep water foundation is built roughly has following several: steel sheet-pile cofferdam, double-walled steel cofferdam, profile iron cofferdam, double-layer thin wall reinforced concrete earth fill cofferdam, steel suspended box cofferdam, opening locked steel tube pilecofferdam etc.
When the cushion cap bottom surface higher far from the riverbed face, or cushion cap following be thicker soft layer and The water is deep and the current fast, can adopt the suspension box-cofferdam when constructing a bridge deep water pile foundation and cushion cap thereof.The suspension box-cofferdam is exactly to be suspended in the water end casing to be arranged, and when constructing a bridge the deep water pile foundation, can make the pile sinking guide-localization, and after pile sinking was finished, pouring underwater concrete back cover in box can be built the cushion cap concrete.This cofferdam in height is divided into some joints, and every root section can be divided into some again according to traffic requirements.The suspension box-cofferdam is to form with steel plate, shaped steel weldering system, and the bottom should be reserved the drilled pile position.Because suspension box-cofferdam implantation not, so it need have self overhung construction to bear load under each operating mode.
Suspension box-cofferdam structure is similar with steel cofferdam, and it construct except that comprising base plate, side plate, also uses suspention and navigation system etc. during construction, according to the size of the height and the working load of water level, selection single wall steel cofferdam or double-walled steel cofferdam.Relative steel cofferdam, the material of suspension box-cofferdam are wanted so that many, and it is simple, convenient to sink, so the construction of domestic and abroad bridge deep water foundation highrise pile cap, the job practicess of most employings suspension box-cofferdam.Although steel suspended box cofferdam is having many good qualities aspect the deep water foundation construction, certain limitation is also arranged, because it only is applicable to the highrise pile cap basis.
Use the steel suspended box cofferdam deep water foundation pile foundation that constructs a bridge, steel sheet-pile cofferdam is the same with using, and can make on the coast, also can be transported to the pier position after being assembled into integral body on the station keeping ship, easy construction, and water resistance is better; Do not enter the riverbed because of the cofferdam but be suspended in the water, so steel using amount is few and the diving workload is little.But its shortcoming is: structure is complicated, and the accuracy of manufacture requires high; During pile sinking, the drift of stake is big, if constructing operation is improper, and fragile stake or box; Because the box current obstruction area is big, when tidewater fluctuation place or strong water impact were arranged, the guide pile that hangs box subjected to damage.Therefore, be necessary that project organization is succinct relatively, be convenient to the steel box structure of onsite moving, construction.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, proposes a kind of concrete floor single-arm steel hanging box, and its side plate adopts single-wall structure, and base plate adopts concrete floor, and cost is low, and is simple in structure, is convenient to carrying, easy construction.
The purpose of this utility model realizes being finished by following technical scheme:
A kind of concrete floor single-arm steel hanging box mainly comprises base plate and side direction plate, the fastening base plate week edge that is installed on of side direction plate, and described base plate is the concrete structure base plate.
The fastening week that is installed on described concrete structure plate upper surface of above-mentioned side direction plate forms the structure of end bag side along the inboard.
Above-mentioned concrete structure base plate is provided with the guide-localization installing hole.
Above-mentioned base plate is made up of the concrete structure base plate piece splicing that is no less than three.
Above-mentioned base plate is hexagon, is made up of the concrete structure base plate piece of four symmetries.
In addition, side direction plate top is welded with hanger, and the concrete structure base plate is provided with at least two suspension ring.
The utility model has the advantages that safety is good, simple for structure, easy construction and cost are low.Concrete floor steel box belongs to single-arm steel hanging box series, and its wallboard directly uses as the cushion cap template, and bears it and block water temporarily and create the effect of inner anhydrous construction environment, saving rolled steel dosage that can amplitude peak; Concrete floor can directly support and overcoat as cushion cap, need not to reclaim, and helps to reduce the consumption of steel.Owing to adopted disposable concrete floor structure, need not after the construction to remove, thereby shortened engineering time and expense greatly.
Description of drawings
Fig. 1 is the utility model concrete floor single-arm steel hanging box vertical view;
Fig. 2 is the structural representation when moving the assembly unit of concrete floor single-arm steel hanging box;
Fig. 3 is concrete floor steel suspended box cofferdam construction process figure.
The specific embodiment
The utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
What label 1-7 indicated among Fig. 1-Fig. 3 is: base plate 1, side direction plate 2, guide-localization installing hole 3, concrete structure base plate piece 4, back cover concrete 5, steel casing 6, bracket 7.
The steel suspended box cofferdam structure comprises base plate, side form etc.During bearing platform construction, side plate, base plate are the main stop water and the double as cushion cap templates of steel suspended box cofferdam, and the steel box is supported on by bracket and finishes assembly unit on the steel casing and sink to the bottom, and carries out bearing platform construction afterwards, removes side plate again.Fig. 1 is the utility model concrete floor single-arm steel hanging box vertical view.As shown in Figure 1, base plate 1 adopts the concrete structure base plate of building in the utility model, and side direction plate 2 is a single-wall structure, and the fastening concrete structure base plate week edge that is installed in forms the cofferdam.Wherein, form the structure of end bag side between side direction plate 2 and the base plate 1, the side direction plate is fastening to be installed in concrete structure base plate week along inboard.
In addition, base plate is provided with some preformed holes, is supported on the steel casing when assembling after being used for.Because base plate size is very big, adopt the splicing of polylith concrete structure base plate piece to form, referring to the structural representation when moving the assembly unit of concrete floor single-arm steel hanging box shown in Figure 2.On every block concrete base plate piece a preformed hole is set, promptly the guide-localization installing hole 3.The position of Kong Yugang casing 6 is corresponding, and guide-localization installing hole 3 diameters should be greater than steel casing 6 diameters.Every block concrete base plate piece 4 is lifted on the steel casing 6, and welding bracket 7 plays a supportive role on the steel casing 6.Steel casing 6 passes guide-localization installing hole 3, and concrete floor piece 4 is supported on the bracket 7, builds back cover concrete 5 on the concrete floor 1 again.
Owing to have only a guide-localization installing hole on every block concrete base plate piece, be fixed on the steel casing.For whole base plate, every block concrete base plate piece is only located a point, at least need 3 block concrete base plate piece assembly units could determine a plane, thereby whole concrete structure base plate is provided with the guide-localization installing hole that is no less than three, guide-localization installing hole number is identical with support steel casing number, and the two position is corresponding to the same.
In following examples, the construction of being implemented when carrying out bearing platform construction such as steel box assembling sinkings grade.Referring to the structural representation when moving the assembly unit of concrete floor single-arm steel hanging box shown in Figure 2, and concrete floor steel suspended box cofferdam construction process figure shown in Figure 3.
Wherein, the base plate of concrete floor single-arm steel hanging box is hexagon, is made up of the concrete structure base plate piece 4 of four symmetries.The high 3.7m of single-arm steel hanging box, the plane is a hexagonal structure, is of a size of 11.7m * 7.8m.End basket is the thick precast concrete plank of 30cm, adopts the scheme of " end bag side ", and sole piece 1 each limit is than the big 11.4cm in each limit of box.Steel box side plate crest level :+4.5m, steel box bottom surface elevation :+0.8m; Elevation at the bottom of the bottom concrete :+0.8m, absolute altitude at the bottom of the cushion cap :+1.5m; Cushion cap top mark height :+4.0m.
Concrete floor is divided into four parts according to actual stake position situation symmetry, and each part is pressed the position of drilled pile, and reserving hole is set, i.e. the guide-localization installing hole.This hole must take into full account situations such as construction deviation, the big 20cm of comparable drilled pile diameter.The channel-section steel bound edge is all adopted in every block concrete base plate inboard, welding junction during as later stage four base plate assembly units.
Every base plate must be installed suspension ring by the situation that is provided with of hangar system near preformed hole, these suspension ring are at later stage base plate, steel side form are whole in sinking the fining twisted steel and the tie point of base plate, also can doublely do that concrete floor lifts simultaneously, the suspension centre in the transportation.Every block concrete base plate must be provided with the steel plate built-in fitting in the stressed position of bracket, prevents this place's concrete because stressed too concentrated and crushed.
The steel box is because floor space is little, land processing factory carries out integral prefabricated in the wings, when prefabricated whole concrete floor piece symmetry is divided into four, according to design size concrete floor piece reinforcing bar is installed earlier, every base plate piece is provided with preformed hole according to steel casing position and carries out built-in fitting such as suspension ring and install, concrete perfusion after the passed examination, and in time carry out the branch block identification.Consider the difficulty and the easy control of construction party of assembly unit waterborne, near two hangers of upper end welding, preformed hole, two suspension ring are set at the every sections of steel bushing case, as the main Heave Here of lifting at concrete floor.
Before the assembly unit, at first on the steel casing 6 more than the ordinary water level, weld bracket 7, as interim support, as shown in Figure 2.Bracket end face absolute altitude is+0.5m the interim operation platform that sinking puts in place as the steel box.Every block concrete base plate piece 4 deadweight 15t, be transported to the scene after, utilize the lifting of 50t crawler crane, install.During installation, utilize steel casing 6, it is placed in the interim support of steel casing, fix, adjust the center of every block concrete base plate piece then according to the pile center position with the reinforcing bar welding as guidance system.Adopt another block concrete base plate piece of same process Installation, when four all install after, accurately adjust the center of concrete floor 1 according to the cushion cap center, guarantee that both are in the error allowed band.
Afterwards, assembly unit steel box steel work partly is side direction plate and following sinking system etc.The following sinking system of steel box adopts the steel casing to set up shoulder pole girder lifting steel box in the present embodiment, adopts Ф 32 fining twisted steels that 8 6m grow, shoulder pole girder and 8 the 32t jackscrew following sinking system as whole steel box.After the steel box sinks to putting in place, the slit between shutoff casing and the concrete floor at first, concreting when selecting the lowest water level on the same day, as shown in Figure 3, build cushion cap after, remove the steel box, concrete floor is disposable use, side direction plate etc. can be recycled.
Claims (5)
1. a concrete floor single-arm steel hanging box mainly comprises base plate and side direction plate, and the fastening base plate week edge that is installed on of side direction plate is characterized in that described base plate is the concrete structure base plate.
2. a kind of concrete floor single-arm steel hanging box according to claim 1 is characterized in that the fastening week that is installed on described concrete structure plate upper surface of described side direction plate along the inboard, forms the structure of end bag side.
3. a kind of concrete floor single-arm steel hanging box according to claim 1 is characterized in that described concrete structure base plate is provided with the guide-localization installing hole.
4. a kind of concrete floor single-arm steel hanging box according to claim 1 is characterized in that described base plate is made up of the concrete structure base plate piece splicing that is no less than three.
5. a kind of concrete floor single-arm steel hanging box according to claim 1 is characterized in that described base plate is hexagon, is made up of the concrete structure base plate piece of four symmetries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206080115U CN201891123U (en) | 2010-11-16 | 2010-11-16 | Single-wall steel hanging box with concrete bottom plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206080115U CN201891123U (en) | 2010-11-16 | 2010-11-16 | Single-wall steel hanging box with concrete bottom plate |
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| CN201891123U true CN201891123U (en) | 2011-07-06 |
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| CN2010206080115U Expired - Lifetime CN201891123U (en) | 2010-11-16 | 2010-11-16 | Single-wall steel hanging box with concrete bottom plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215962A (en) * | 2013-03-22 | 2013-07-24 | 中铁大桥局集团第五工程有限公司 | Pier stud type pile foundation tie beam steel hanging box cofferdam |
| CN104594373A (en) * | 2014-12-19 | 2015-05-06 | 中交一航局第三工程有限公司 | Construction technology of high-pile water-submerging bearing table steel suspending box of open unshielded sea area bridge |
| CN104631338A (en) * | 2015-02-16 | 2015-05-20 | 中交第二航务工程局有限公司 | Steel boxed cofferdam and positioning construction method |
| CN107044129A (en) * | 2017-01-20 | 2017-08-15 | 中国葛洲坝集团第六工程有限公司 | A kind of bottomless single wall steel boxed cofferdam of piecemeal pin-connected panel and its construction method |
| CN108222041A (en) * | 2018-03-06 | 2018-06-29 | 中铁二十四局集团新余工程有限公司 | Large-sized deep water basis single wall steel boxed cofferdam construction |
| CN113529763A (en) * | 2021-07-01 | 2021-10-22 | 中铁十九局集团华东工程有限公司 | Method for constructing sea area shoal cushion cap by utilizing reinforced concrete combined steel cofferdam |
| CN115492141A (en) * | 2022-10-21 | 2022-12-20 | 中铁二院工程集团有限责任公司 | Steel suspension box cofferdam structure and bottom plate and construction method thereof |
-
2010
- 2010-11-16 CN CN2010206080115U patent/CN201891123U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215962A (en) * | 2013-03-22 | 2013-07-24 | 中铁大桥局集团第五工程有限公司 | Pier stud type pile foundation tie beam steel hanging box cofferdam |
| CN104594373A (en) * | 2014-12-19 | 2015-05-06 | 中交一航局第三工程有限公司 | Construction technology of high-pile water-submerging bearing table steel suspending box of open unshielded sea area bridge |
| CN104631338A (en) * | 2015-02-16 | 2015-05-20 | 中交第二航务工程局有限公司 | Steel boxed cofferdam and positioning construction method |
| CN107044129A (en) * | 2017-01-20 | 2017-08-15 | 中国葛洲坝集团第六工程有限公司 | A kind of bottomless single wall steel boxed cofferdam of piecemeal pin-connected panel and its construction method |
| CN108222041A (en) * | 2018-03-06 | 2018-06-29 | 中铁二十四局集团新余工程有限公司 | Large-sized deep water basis single wall steel boxed cofferdam construction |
| CN113529763A (en) * | 2021-07-01 | 2021-10-22 | 中铁十九局集团华东工程有限公司 | Method for constructing sea area shoal cushion cap by utilizing reinforced concrete combined steel cofferdam |
| CN115492141A (en) * | 2022-10-21 | 2022-12-20 | 中铁二院工程集团有限责任公司 | Steel suspension box cofferdam structure and bottom plate and construction method thereof |
| CN115492141B (en) * | 2022-10-21 | 2024-01-30 | 中铁二院工程集团有限责任公司 | Steel suspended box cofferdam structure, bottom plate thereof and construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |