CN110820567A - Bearing type hanging basket for PC box girder part with corrugated steel web plate - Google Patents
Bearing type hanging basket for PC box girder part with corrugated steel web plate Download PDFInfo
- Publication number
- CN110820567A CN110820567A CN201910980617.7A CN201910980617A CN110820567A CN 110820567 A CN110820567 A CN 110820567A CN 201910980617 A CN201910980617 A CN 201910980617A CN 110820567 A CN110820567 A CN 110820567A
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- hanging basket
- steel web
- corrugated steel
- cradle
- basket
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bearing type hanging basket for a PC box girder part of a corrugated steel web plate. It includes: a basket hanging truss; the hanging basket fixing device is fixed on the concrete of the previous section, and one end of the hanging basket fixing device is provided with a hanging basket rear supporting point foundation; the cradle rear supporting point is arranged at the rear end of the cradle truss and is connected with the cradle rear supporting point foundation; the hanging basket front supporting points are arranged in the middle of the hanging basket truss and are connected with the corrugated steel web of the section through a hanging basket front supporting point foundation; the hoisting equipment is arranged at the front end of the cradle truss and is used for hoisting the corrugated steel web of the next section; and the working platform is arranged below the cradle truss. The bearing type hanging basket of the corrugated steel web PC box girder part reduces the tensile force of the hanging basket load on the prestressed concrete box girder at the initial pouring stage.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a bearing type hanging basket for a corrugated steel web PC box girder part.
Background
In the field of bridge construction, the corrugated steel web PC combined box girder is a steel-concrete combined structure formed by combining a corrugated steel web and a top-bottom PC plate, and the combined cross section has the advantages of light structure dead weight, low manufacturing cost, high concrete prestress introduction rate of the top-bottom plate of the box girder, convenience in construction, short construction period and the like, thereby becoming a main direction of a modern combined structure girder bridge.
The hanging basket cantilever casting method is a commonly used construction method for corrugated steel web PC box girders. According to the different bearing parts of the hanging basket, the hanging basket cantilever casting method can be divided into a cantilever front end concrete bearing type and a corrugated steel web bearing type. When the tradition hung the basket and carried out cantilever operation, hung basket load almost all on acting on last section concrete, to pouring the prestressed concrete box girder at initial stage, hung basket load and must produce great pulling force to it.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a bearing type hanging basket of a corrugated steel web PC box girder part, which has a simple and reasonable structure, and reduces the tensile force of a hanging basket load on a prestressed concrete box girder at the initial pouring stage.
In order to achieve the purpose, the invention provides a bearing type hanging basket for a PC box girder part with a corrugated steel web plate, which comprises: a basket hanging truss; the hanging basket fixing device is fixed on the concrete of the previous section, and one end of the hanging basket fixing device is provided with a hanging basket rear supporting point foundation; the cradle rear supporting point is arranged at the rear end of the cradle truss and is connected with the cradle rear supporting point foundation; the hanging basket front supporting points are arranged in the middle of the hanging basket truss and are connected with the corrugated steel web of the section through a hanging basket front supporting point foundation; the hoisting equipment is arranged at the front end of the cradle truss and is used for hoisting the corrugated steel web of the next section; and the working platform is arranged below the cradle truss.
In a preferred embodiment, the basket securing means is anchored to the concrete of the previous section.
In a preferred embodiment, the rear supporting point of the hanging basket is installed at the front end of the hanging basket fixing device in a bolt connection or welding mode.
In a preferred embodiment, the front supporting point foundation of the hanging basket and the corrugated steel web of the section are connected together by bolts.
Compared with the prior art, the bearing type hanging basket for the PC box girder part with the corrugated steel web plate has the following beneficial effects: this basket is hung to wave form steel web PC box girder part bearing type utilizes the intensity of preceding section concrete and the intensity of this section's wave form steel web to support jointly and hang basket construction load to pour this section's upper and lower web and install next section's wave form steel web, reduced the pulling force that the basket load produced to the prestressed concrete box girder of pouring the initial stage.
Drawings
FIG. 1 is a drawing showing the using state of a cradle of a bearing type of a corrugated steel web PC box girder part according to a first embodiment of the invention.
FIG. 2 is a connection diagram of a basket front supporting point foundation and a corrugated steel web of a bearing type basket of a corrugated steel web PC box girder part according to a first embodiment of the invention.
FIG. 3 is a flow chart of a corrugated steel web PC box girder portion load-bearing cradle according to a first embodiment of the invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, the specific structure of the corrugated steel web PC box girder part load-bearing hanging basket according to the preferred embodiment of the present invention includes: hang basket truss 1, hang basket fixing device 2, hang basket back fulcrum 3, hang basket front pivot 4, lifting device 5 and work platform 6. The bearing type hanging basket for the corrugated steel web part mainly supports construction load by using the strength of concrete of a previous section and the strength of the corrugated steel web of the section together so as to pour the upper and lower webs of the section and install the corrugated steel web of the next section.
Specifically, the cradle fixing device 2 is fixed on the concrete of the previous section, and one end of the cradle fixing device is provided with a cradle rear supporting point foundation which is mainly used for connecting the cradle truss 1 and the front end concrete.
Preferably, the basket fixture 2 is anchored to the concrete of the previous section.
Hang basket back fulcrum 3 and lay in the rear end (left side) of hanging basket truss 1 to be connected with hanging basket back fulcrum foundation of hanging basket fixing device 2, hang basket construction load indirect effect on preceding section concrete partially.
Preferably, the rear fulcrum 3 of the hanging basket is installed at the front end of the hanging basket fixing device in a bolt connection or welding mode.
The hanging basket front supporting points 4 are arranged in the middle of the hanging basket truss 1 and are connected with the corrugated steel web 9 of the section through the hanging basket front supporting point foundation 10, and the rest hanging basket construction load directly acts on the corrugated steel web.
Preferably, as shown in fig. 2, the front fulcrum foundation 10 of the cradle is connected with the corrugated steel web of the section by bolts 11.
The hoisting equipment 5 is arranged at the front end (right side) of the cradle truss 1 and is mainly used for hoisting a rear section of corrugated steel web 9.
The working platform 6 is arranged below the cradle truss 1.
As shown in fig. 3, the corrugated steel web PC box girder part load-bearing cradle according to the preferred embodiment of the invention is suitable for construction of a cantilever section of a corrugated steel web continuous beam bridge cantilever casting method, and mainly uses the strength of concrete of a previous section and the strength of the corrugated steel web of the section to support the cradle construction load together so as to cast the upper and lower webs of the section and install the corrugated steel web of the next section. The construction method for the bearing type hanging basket suspension casting of the PC box girder part of the corrugated steel web plate specifically comprises the following steps:
step 1: fixing a hanging basket fixing device of a bearing type hanging basket of a corrugated steel web part on the concrete of the previous section, and arranging a hanging basket rear supporting point foundation at one end of the hanging basket fixing device; then connecting the rear basket supporting point of the corrugated steel web part bearing type hanging basket with the rear basket supporting point foundation of the hanging basket fixing device; connecting a hanging basket front fulcrum of a bearing type hanging basket of the corrugated steel web part with the corrugated steel web of the section through a hanging basket front fulcrum foundation;
step 2: after finishing all construction tasks of suspension casting of the bearing type hanging basket of the corrugated steel web part of the cost section, mounting the corrugated steel web plate of the next section by using hoisting equipment of the bearing type hanging basket of the corrugated steel web part, and arranging a transverse bridge horizontal supporting device or an inclined supporting device between two corrugated steel web plates (the corrugated steel web plate of the section and the corrugated steel web plate of the next section);
and step 3: the fixed connection between the hanging basket fixing device and the concrete of the previous section and the bolt connection between the front supporting point foundation of the hanging basket and the corrugated steel web of the section are disassembled, a jack is used for synchronously pushing the traveling corrugated steel web part bearing type hanging basket to move to the required position of the next section of corrugated steel web part bearing type hanging basket suspension casting construction, and after the adjustment and the stabilization, the fixed hanging basket fixing device is fixedly connected with the concrete of the section and the bolt connection between the front supporting point foundation of the hanging basket and the corrugated steel web of the next section;
preferably, the front supporting point of the hanging basket is pushed to a position 0.5m away from the front end of the corrugated steel web plate of the next section and fixed. The rear supporting point of the hanging basket is anchored at the position of 1.2m of the concrete edge of the section.
And 4, step 4: and installing the templates of the box girder top plate 8 and the box girder bottom plate 9 of the next section, binding reinforcing steel bars, and synchronously pouring concrete of the box girder top plate and the box girder bottom plate to achieve the post-tensioning prestressed reinforcing steel bars with the designed strength.
Through the mode, the whole construction process is implemented circularly, and the construction target of the full-section pouring corrugated steel web continuous beam bridge cantilever section is achieved.
In conclusion, the partial bearing type hanging basket of the corrugated steel web PC box girder utilizes the strength of the concrete of the previous section and the strength of the corrugated steel web of the section to jointly support the construction load of the hanging basket so as to pour the upper and lower webs of the section and install the corrugated steel web of the next section, thereby reducing the tensile force of the hanging basket load on the prestressed concrete box girder at the initial pouring stage.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. The utility model provides a basket is hung to wave form steel web PC case roof beam part bearing type which characterized in that includes:
a basket hanging truss;
the hanging basket fixing device is fixed on the concrete of the previous section, and one end of the hanging basket fixing device is provided with a hanging basket rear supporting point foundation;
the cradle rear supporting point is arranged at the rear end of the cradle truss and is connected with the cradle rear supporting point foundation;
the hanging basket front supporting points are arranged in the middle of the hanging basket truss and are connected with the corrugated steel web of the section through a hanging basket front supporting point foundation;
the hoisting equipment is arranged at the front end of the cradle truss and is used for hoisting the corrugated steel web of the next section; and
and the working platform is arranged below the cradle truss.
2. The corrugated steel web PC box beam portion load bearing baskets of claim 1, wherein said basket securing means are anchored to the concrete of a previous section.
3. The corrugated steel web PC box girder segment load-bearing cradle of claim 1, wherein the cradle rear pivot is mounted at the front end of the cradle fixture by bolting or welding.
4. The corrugated steel web PC box beam section load bearing baskets of claim 1, wherein said basket front pivot foundation is bolted to the section of corrugated steel web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980617.7A CN110820567A (en) | 2019-10-16 | 2019-10-16 | Bearing type hanging basket for PC box girder part with corrugated steel web plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980617.7A CN110820567A (en) | 2019-10-16 | 2019-10-16 | Bearing type hanging basket for PC box girder part with corrugated steel web plate |
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| Publication Number | Publication Date |
|---|---|
| CN110820567A true CN110820567A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910980617.7A Pending CN110820567A (en) | 2019-10-16 | 2019-10-16 | Bearing type hanging basket for PC box girder part with corrugated steel web plate |
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| CN (1) | CN110820567A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395190A (en) * | 2020-04-15 | 2020-07-10 | 中铁大桥科学研究院有限公司 | Asynchronous construction hanging basket system for corrugated steel web bridge and construction method of asynchronous construction hanging basket system |
| CN111535205A (en) * | 2020-05-07 | 2020-08-14 | 浙江省交通运输科学研究院 | Cantilever construction method for bearing partial weight of bottom plate by using corrugated steel web plate |
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| FR2570112A1 (en) * | 1984-09-12 | 1986-03-14 | Travaux Publics Indl Entrepris | Method for constructing a bridge by successive cantilevering operations |
| JP2006118314A (en) * | 2004-10-25 | 2006-05-11 | Ps Mitsubishi Construction Co Ltd | Construction method of corrugated steel plate web bridge |
| CN202830783U (en) * | 2011-11-30 | 2013-03-27 | 浙江省交通工程建设集团有限公司第二分公司 | Triangle basket running device |
| CN205062678U (en) * | 2015-10-09 | 2016-03-02 | 中交第二航务工程局有限公司 | Be applied to construction of case roof beam of wave form steel web structure and hang basket |
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| CN206070393U (en) * | 2016-09-20 | 2017-04-05 | 中交武汉港湾工程设计研究院有限公司 | A kind of asynchronous construction hanging basket of Wavelike steel webplate composite beam bridge |
| CN108914785A (en) * | 2018-09-26 | 2018-11-30 | 中铁四局集团有限公司 | Hanging basket cantilever pouring construction method of multi-chamber corrugated steel web continuous beam bridge |
| CN209468695U (en) * | 2018-12-20 | 2019-10-08 | 中交二公局第三工程有限公司 | A kind of no truss overhanging type corrugated steel web cantilever bridge construction hanging frame device |
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2019
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| FR2570112A1 (en) * | 1984-09-12 | 1986-03-14 | Travaux Publics Indl Entrepris | Method for constructing a bridge by successive cantilevering operations |
| JP2006118314A (en) * | 2004-10-25 | 2006-05-11 | Ps Mitsubishi Construction Co Ltd | Construction method of corrugated steel plate web bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395190A (en) * | 2020-04-15 | 2020-07-10 | 中铁大桥科学研究院有限公司 | Asynchronous construction hanging basket system for corrugated steel web bridge and construction method of asynchronous construction hanging basket system |
| CN111395190B (en) * | 2020-04-15 | 2024-05-28 | 中铁大桥科学研究院有限公司 | Wave-shaped steel web bridge asynchronous construction hanging basket system and construction method thereof |
| CN111535205A (en) * | 2020-05-07 | 2020-08-14 | 浙江省交通运输科学研究院 | Cantilever construction method for bearing partial weight of bottom plate by using corrugated steel web plate |
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Application publication date: 20200221 |