CN115125983A - Bottomless steel sleeve box for bridge underwater bearing platform construction - Google Patents
Bottomless steel sleeve box for bridge underwater bearing platform construction Download PDFInfo
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- CN115125983A CN115125983A CN202210942823.0A CN202210942823A CN115125983A CN 115125983 A CN115125983 A CN 115125983A CN 202210942823 A CN202210942823 A CN 202210942823A CN 115125983 A CN115125983 A CN 115125983A
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- steel
- bearing platform
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- 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
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of construction equipment for underwater bearing platforms of bridges, in particular to a bottomless steel sleeve box for construction of an underwater bearing platform of a bridge, which realizes internal and external support during pouring, does not need to be spliced one by one and can be used as an outer protective shell of the bearing platform after pouring. The technical scheme adopted by the invention for solving the technical problems is as follows: a bottomless steel sleeve box for bridge underwater bearing platform construction comprises a sleeve box shell formed by surrounding formwork panels, wherein an inner supporting structure is arranged in the sleeve box shell, two ends of the inner supporting structure are connected with the formwork panels, and at least one steel strap is arranged on the outer wall of the sleeve box shell along the horizontal plane direction. The invention is particularly suitable for the construction of the underwater bearing platform of the bridge.
Description
Technical Field
The invention relates to the field of bridge underwater bearing platform construction equipment, in particular to a bottomless steel sleeve box for bridge underwater bearing platform construction.
Background
At present, in the construction of a bearing platform of a river valley shoal bridge in a mountain area, a steel cofferdam or an earth-rock cofferdam is basically adopted in the existing construction of an underwater bearing platform, templates are almost spliced on site, the construction is complex, the safety risk is high, and a separate construction anti-collision measure is required after the construction of the bearing platform is completed, so that the progress and the appearance quality are influenced. Therefore, how to use the template which can be used safely and quickly and can achieve the effects of scour prevention and collision prevention in the construction of the bearing platform of the river and shoal bridge in the mountainous area is urgent to solve. The invention of CN202120647236.X discloses a bottomless steel pouring jacket without edge feet, which comprises a plurality of light steel pouring jacket block sections, a plurality of connecting pieces, a plurality of water stops and four corner connecting parts. Are sequentially connected through connecting pieces and are arranged in a rectangular surrounding manner around the pile foundation and the steel casing. The invention discloses a rapid construction structure of a secant pile and steel sleeve combined cofferdam, which is characterized in that the secant pile and a pile foundation are constructed by filling a small-range artificial island, then a steel sleeve is excavated and installed in a foundation pit, and the combined cofferdam is constructed in a short construction period. The artificial island has small filling range, short filling time and low construction cost. The invention discloses a double-wall steel boxed cofferdam device in CN 202120208415.3. Through steel bushing case and sand discharge mechanism, sand discharge mechanism is connected between the inside and outside panel of steel bushing case, is used for removing the sandy soil below with external intercommunication, has the effect of the difficult defect of sinking when improving steel bushing case construction. CN202021385013.2 discloses a block type steel pouring jacket cofferdam, which is characterized in that a plurality of transverse distribution beams and a plurality of vertical main beams form side plates, the two ends of the side plates are connected by spiral steel pipe columns, an assembling platform is not required to be erected, the side plates are installed in blocks, the cost is greatly saved, and the whole assembling and installing process of the side plates is divided into parts by the pouring jacket cofferdam, so that the assembling and the installing process are simple and convenient, the stability is good, and the construction safety is high. However, the above solutions cannot simultaneously achieve the effects of safety, rapidness, short construction period and low cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bottomless steel sleeve box for bridge underwater bearing platform construction, which realizes internal and external support during pouring, does not need to be spliced one by one, and can be used as an outer protective shell of a bearing platform after pouring.
The technical scheme adopted by the invention for solving the technical problems is as follows: a bottomless steel sleeve box for bridge underwater bearing platform construction comprises a sleeve box shell formed by surrounding formwork panels, wherein an inner supporting structure is arranged in the sleeve box shell, two ends of the inner supporting structure are connected with the formwork panels, and at least one steel strap is arranged on the outer wall of the sleeve box shell along the horizontal plane direction.
Furthermore, adjacent section steel braces are fixedly connected through opposite-drawing finish rolling deformed steel bars.
Furthermore, a split angle steel support is arranged at the connecting hole between the split finish rolling deformed steel bar and the profile steel braces.
Furthermore, an angle steel connecting piece is arranged between the adjacent steel braces.
Furthermore, the inner support structure is inner support section steel.
Furthermore, the formwork panel is provided with a counter-pull hole, and the end heads at two ends of the inner support structure are arranged in the counter-pull hole.
Furthermore, stiffening ribs are arranged on the template panel.
Further, a hoisting lug is arranged on the jacket shell.
The invention has the beneficial effects that: this bridge is no end steel pouring jacket for bearing platform construction under water has following three advantages: firstly, internal and external supports are provided. The whole of the complete box shell is connected through the template panel, so that the external pressure of internal concrete pouring can be borne, the internal extrusion force of external water flow silt can be borne, the strength of a bearing platform is increased, and the water flow silt is prevented from scouring and colliding; and secondly, integrating the template. The bottomless steel sleeve box for bridge underwater bearing platform construction is spliced into a whole on the bank, and then the hoisting can be completed at one time without splicing one by one under water, so that the time and the labor are saved, and the underwater construction safety is reduced. The design of no bottom, after the excavation of the position of the bearing platform is finished, the bearing platform is positioned at one time, and the bearing platform is mechanically matched with a hoisting machine at one time, so that the bearing platform is easy to lower; three, one case is multi-purpose. The steel sleeve box can be used as an underwater construction cofferdam, a bearing platform template and a bearing platform outer protective shell. The construction process is used as a cofferdam to guarantee construction safety, the integrity of the bearing platform is improved as a template, and the anti-scouring collision capacity of the bearing platform is improved as a protective shell after construction is completed. One box is multi-purpose, saves materials. The invention is particularly suitable for the construction of the underwater bearing platform of the bridge.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic view of the outer wall surface of the case housing of the present invention.
Fig. 4 is a side view of the present invention.
Labeled as: template panel 1, inner support structure 2, shaped steel braces 3, angle steel connecting piece 4, channel-section steel vertical rib 5, to trompil 6, to drawing finish rolling screw-thread steel 7, to drawing angle steel support 8, stiffening rib 9, hoist and mount lug 10.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The bottomless steel pouring jacket for the construction of the underwater bearing platform of the bridge as shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a pouring jacket shell formed by enclosing template panels 1, wherein an inner support structure 2 is arranged in the pouring jacket shell, two ends of the inner support structure 2 are connected with the template panels 1, and at least one section steel strap 3 is arranged on the outer wall of the pouring jacket shell along the horizontal plane direction. The invention mainly aims at the construction of a bearing platform of a bridge of a river valley and a shoal in a mountain area, designs an integrated anti-collision bottomless steel pouring jacket template, and comprehensively utilizes and saves space and materials by combining the functions of the template, a cofferdam, anti-collision and the like, so that the construction operation is convenient, and the working efficiency, the construction quality and the appearance quality are improved. Generally, the inner support structure 2 is preferably an inner support section steel. For the convenience of hoisting, the lifting lugs 10 are preferably arranged on the casing body of the pouring jacket.
In order to allow the adjacent steel section braces 3 to be connected to each other more firmly, the following solution is preferred: the adjacent steel section braces 3 are fixedly connected through opposite-drawing finish-rolling deformed steel bars 7. Preferably, in order to ensure that the connection between the finish-drawing and finish-rolling deformed steel bar 7 and the steel bar braces 3 is more stable, a split angle steel support 8 is preferably arranged at the connecting hole between the finish-drawing and finish-rolling deformed steel bar 7 and the steel bar braces 3. In addition, an angle steel connecting piece 4 is preferably arranged between the adjacent steel straps 3, so that the adjacent steel straps 3 can be supported more stably. In order to obtain a higher structural strength of the formwork panel 1, the formwork panel 1 is provided with stiffening ribs 9.
In actual design, in order to conveniently and quickly arrange the inner support structure 2 on the formwork panel 1, preferably, the formwork panel 1 is provided with a counter-pulling hole 6, and the end heads at two ends of the inner support structure 2 are arranged in the counter-pulling hole 6.
In the actual assembly, the following steps can be selected to be carried out: firstly, designing an integrated steel sleeve box according to the size of a bearing platform, preparing materials according to the size, and assembling the sleeve box. The edges of the steel plate panels are closely pasted with angle steel and fully welded, and the four panels are spliced, so that the joints of the four panels are compact and firm; the interior support installation, interior support divide into the three-layer, and the right side is from top to bottom, installs in proper order, and it is smooth-going to support shaped steel end cutting plane with great ease, and the welding is firm when transferring to preset position, and the crossing department welding is firm about supporting with great ease. The panel is provided with outer vertical ribs and other frameworks, the vertical ribs are closely attached and welded with the panel, stiffening ribs are welded among the vertical ribs, and meanwhile, split holes are formed along the positions of the straps. The strap cross rib girder is installed, the strap cross rib girder and the vertical rib contact position are welded firmly, the chamfer opposite-pulling support and the lifting lug are installed on the outer side, and high-strength finish-rolled deformed steel bar is used for the pull rod and the lifting lug. Secondly, after pile foundation construction is completed, excavating an underwater foundation pit of a bearing platform, and constructing the next process after detecting that the excavation size is qualified. And then, the crane is in place, and the field excavator is matched with the crane to hoist the steel sleeve box. And (5) sealing the bottom of the steel sleeve box under water, pumping water and constructing a bearing platform steel bar. Then, the formwork and all tie rods are inspected and the bearing platform concrete is poured.
The specific components and functions are described as follows: first, the inner supporting structure 2. Can select to cross through shaped steel cross support, with pile foundation position subregion, shaped steel end connection template panel simultaneously, shaped steel and panel welding are firm, shaped steel and shaped steel contact surface welded fastening support in the steel bushing case as, the pressure of main supporting die plate extra income and silt. Second, template panel 1. Four integral steel plates with the thickness of 6mm can be selected to be formed, the steel plates are directly cut and formed by a manufacturer, the frames of the steel plates are flush with the outer edges and are closely attached with welding angle steel, and the rigidity and the symmetry of the edges of the steel plates are improved. Two adjacent panels pass through marginal angle steel welded connection, and the welding must be closely knit, guarantees that the contact surface is close-fitting, opens the counter-pulling hole along braces position symmetry on the panel, to the mounting PVC union coupling of pulling hole, reserves for drawing finish rolling screw-thread steel passageway. The steel plate panel is internally used as a concrete template and externally plays a role in water retaining and protecting. The back rib frame framework consists of vertical ribs, stiffening ribs, braces, chamfer reinforcing ribs and lifting lugs, the back of the steel template is vertically arranged at equal intervals by adopting channel steel and is closely welded, transverse steel plates are welded between the vertical channel steel to serve as the stiffening ribs, and the transverse profile steel braces are arranged on the outer sides of the vertical ribs and serve as transverse framework stiffening ribs; vertical welding angle steel in braces end, angle steel both ends trompil as chamfer split finish rolling screw-thread steel support. The vertical ribs and braces on the outer side of the template are used as the pouring pressure of concrete supported outside the template in the construction process, and the template is left underwater after construction to serve as an anti-water flow scouring impact outer protective shell.
The invention can well realize internal and external support during pouring without splicing one by one, and can be used as an outer protective shell of a bearing platform after pouring, thereby having very obvious technical advantages and wide market popularization prospect.
Claims (8)
1. Bridge is bearing platform construction under water is with no end steel pouring jacket, its characterized in that: the steel-bar-type composite formwork casing comprises a casing body formed by surrounding formwork panels (1), wherein an inner supporting structure (2) is arranged in the casing body, two ends of the inner supporting structure (2) are connected with the formwork panels (1), and at least one steel-bar belt (3) is arranged on the outer wall of the casing body along the horizontal plane direction.
2. The bottomless steel sleeve box for the construction of the underwater bearing platform of the bridge as claimed in claim 1, characterized in that: the adjacent steel section braces (3) are fixedly connected through the opposite-drawing finish-rolling deformed steel bars (7).
3. The bottomless steel sleeve box for the construction of the underwater bridge bearing platform as claimed in claim 2, is characterized in that: and a split angle steel support (8) is arranged at the connecting hole between the split finish rolling deformed steel bar (7) and the section steel strap (3).
4. The bottomless steel sleeve box for the construction of the underwater bearing platform of the bridge as claimed in claim 2, characterized in that: an angle steel connecting piece (4) is arranged between the adjacent steel braces (3).
5. The bottomless steel pouring jacket for the construction of the underwater bearing platform of the bridge as claimed in claim 1, 2, 3 or 4, wherein: the inner support structure (2) is formed by inner support section steel.
6. The bottomless steel pouring jacket for the construction of the underwater bearing platform of the bridge as claimed in claim 1, 2, 3 or 4, wherein: the formwork panel (1) is provided with a counter-pulling hole (6), and the end heads at two ends of the inner support structure (2) are arranged in the counter-pulling hole (6).
7. The bottomless steel pouring jacket for the construction of the underwater bearing platform of the bridge as claimed in claim 1, 2, 3 or 4, wherein: and stiffening ribs (9) are arranged on the template panel (1).
8. The bottomless steel pouring jacket for the construction of the underwater bearing platform of the bridge as claimed in claim 1, 2, 3 or 4, wherein: the jacket shell is provided with a hoisting lug (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942823.0A CN115125983A (en) | 2022-08-08 | 2022-08-08 | Bottomless steel sleeve box for bridge underwater bearing platform construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942823.0A CN115125983A (en) | 2022-08-08 | 2022-08-08 | Bottomless steel sleeve box for bridge underwater bearing platform construction |
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| Publication Number | Publication Date |
|---|---|
| CN115125983A true CN115125983A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210942823.0A Pending CN115125983A (en) | 2022-08-08 | 2022-08-08 | Bottomless steel sleeve box for bridge underwater bearing platform construction |
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|---|---|
| CN (1) | CN115125983A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202416334U (en) * | 2012-01-18 | 2012-09-05 | 宁波市政工程建设集团股份有限公司 | Thin-walled steel box |
| CN202644507U (en) * | 2012-05-23 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Steel jacket box |
| 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 |
| DE202021103023U1 (en) * | 2020-06-24 | 2021-07-30 | China Tiesiju Civil Engineering Group Co.Ltd. | A complete positioning and assembly structure for double-walled steel box dams and short groups of protective tubes |
| CN214940282U (en) * | 2020-12-24 | 2021-11-30 | 中铁大桥局集团有限公司 | Hanging box cofferdam structure with back ribs |
| WO2022142999A1 (en) * | 2020-12-29 | 2022-07-07 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam and construction method therefor |
| CN114809043A (en) * | 2022-04-26 | 2022-07-29 | 中交第二公路工程局有限公司 | Steel pipe and corrugated steel plate combined hanging box cofferdam and construction method |
-
2022
- 2022-08-08 CN CN202210942823.0A patent/CN115125983A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202416334U (en) * | 2012-01-18 | 2012-09-05 | 宁波市政工程建设集团股份有限公司 | Thin-walled steel box |
| CN202644507U (en) * | 2012-05-23 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Steel jacket box |
| 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 |
| DE202021103023U1 (en) * | 2020-06-24 | 2021-07-30 | China Tiesiju Civil Engineering Group Co.Ltd. | A complete positioning and assembly structure for double-walled steel box dams and short groups of protective tubes |
| CN214940282U (en) * | 2020-12-24 | 2021-11-30 | 中铁大桥局集团有限公司 | Hanging box cofferdam structure with back ribs |
| WO2022142999A1 (en) * | 2020-12-29 | 2022-07-07 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam and construction method therefor |
| CN114809043A (en) * | 2022-04-26 | 2022-07-29 | 中交第二公路工程局有限公司 | Steel pipe and corrugated steel plate combined hanging box cofferdam and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 姜锡东;祝梅良;: "无底双壁钢套箱围堰在之江大桥水中承台施工中的应用", 公路交通科技(应用技术版), no. 12 * |
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