CN109778720B - Bridge construction method based on cradle construction - Google Patents
Bridge construction method based on cradle construction Download PDFInfo
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- CN109778720B CN109778720B CN201910203445.2A CN201910203445A CN109778720B CN 109778720 B CN109778720 B CN 109778720B CN 201910203445 A CN201910203445 A CN 201910203445A CN 109778720 B CN109778720 B CN 109778720B
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Abstract
The bridge construction method based on the cradle construction comprises the following steps that before the cradle is selected, the weight of a box girder needing to be lifted in the construction is determined; the hanging baskets are selected according to the weight of the box girder, when the hanging baskets are selected, the load force of the two hanging baskets is smaller than the weight of the box girder, and the load force of the four hanging baskets is larger than the weight of the box girder.
Description
Technical Field
The invention relates to a bridge construction method based on cradle construction.
Background
In bridge construction, a construction method which is novel in technology, high in speed, convenient to construct and economical is continuously sought. The construction method that the box girder is assembled on the construction site after being prefabricated in a factory is widely adopted, the construction process reduces the influence of bridge construction on urban traffic, and the technical level of the viaduct engineering is improved. The bridge construction method needs to build a bridge deck crane in a construction site by means of the bridge deck crane, and the bridge deck crane is dismantled after the bridge deck crane is hoisted.
The large-span prestressed concrete continuous beam is widely used for cantilever casting construction by adopting a hanging basket. The hanging basket construction refers to the operation of segmenting the cantilever on site by adopting a hanging basket method when a cantilever beam bridge is poured. It does not need to erect a support and does not use a large crane. Compared with other methods, the construction of the hanging basket has the advantages of light structure, simple and convenient splicing, no pressure, heavy weight and the like.
When above-mentioned construction method appeared simultaneously, need tear the basket open earlier and be assembling the bridge floor loop wheel machine, need two sets of equipment, and make a round trip the dismouting comparatively loaded down with trivial details.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bridge construction method based on hanging basket construction, which can effectively utilize hanging baskets to realize hoisting.
The invention relates to a bridge construction method based on cradle construction.A bridge construction site is provided with two cradles which are arranged back to back, the advancing directions of the two cradle construction are opposite, the cradle comprises a diamond truss, and the method comprises the following steps of firstly determining the weight of a box girder needing to be lifted in the construction before selecting the cradle; the hanging baskets are selected according to the weight of the box girder, when the hanging baskets are selected, the load force of the two hanging baskets is smaller than the weight of the box girder, and the load force of the four hanging baskets is larger than the weight of the box girder.
When the box girder needs to be lifted, the hanging baskets on one side and the hanging baskets on the other side in the same construction area are combined, and the rhombic trusses of the two hanging baskets are overlapped; one side hanging basket and the other side hanging basket of the other same construction area are combined, and the rhombic trusses of the two hanging baskets are overlapped; and hoisting the box girder between two adjacent construction areas by the reconstructed hanging basket.
The mounting plates on the two diamond trusses are overlapped and fixed by fasteners when the two diamond trusses are combined.
Compared with the solution scheme in the prior art, the invention has the advantages that: the invention can omit bridge floor crane equipment when in implementation, and can use the cradle equipment as the bridge floor crane equipment, thereby reducing the construction equipment expenditure, fully utilizing the original cradle and improving the construction efficiency.
Drawings
Fig. 1 is a structural schematic diagram of the hanging basket in a conventional use state.
FIG. 2 is a schematic structural view of the hanging basket of the present invention when used as a bridge deck crane.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Referring to fig. 1 to 2, in the bridge construction method based on cradle construction according to the embodiment, a bridge construction site is provided with two cradles 1, the two cradles 1 are arranged back to back, the construction advancing directions of the two cradles 1 are opposite, the cradle 1 includes a diamond truss, and the method further includes the following steps of determining the weight of a box girder 2 to be lifted in the construction before the cradle 1 is selected, and the box girder 2 is a prefabricated member for bridge construction; the hanging baskets 1 are selected according to the weight of the box girder 2, when the hanging baskets 1 are selected, the load force of the two hanging baskets 1 is smaller than the weight of the box girder 2, and the load force of the four hanging baskets 1 is larger than the weight of the box girder 2. Although the original hanging basket 1 in the mechanism can not hang the box girder 2, the combined hanging basket 1' can be used as a bridge deck crane to hang the box girder 2, and compared with the traditional construction mode, the method is more convenient.
When the box girder 2 needs to be lifted, the hanging baskets 1 at one side and the hanging baskets 1 at the other side in the same construction area are combined, and the rhombic trusses of the two hanging baskets 1 are overlapped; one side hanging basket 1 and the other side hanging basket 1 of the other same construction area are combined, and the rhombic trusses of the two hanging baskets 1 are overlapped; and the combined hanging basket 1' is used for hoisting the box girder 2 between two adjacent construction areas.
This embodiment is when concrete implementation, hangs basket 1 construction and usually starts to extend the construction to both sides from the pier center, hangs basket 1 and waters after the construction certain distance, demolishs one side on same pier and hangs basket 1, and the basket 1 part of hanging that will demolish is 1 amalgamations with the basket of hanging of opposite side, and former basket 1's load capacity reinforcing is hung, and the same processing is done to the basket of hanging 1 on another pier, and the basket of hanging 1 after the amalgamation is hung prefabricated box girder 2 as the practicality of bridge crane and is accomplished the bridge floor and fold.
The side of the diamond truss is provided with an installation disc, the installation disc is provided with through holes, and when the two diamond trusses are combined, the installation discs on the two diamond trusses are overlapped and fixed by fasteners. The bolt is screwed down by adopting a nut for the through hole.
The foregoing is only a preferred embodiment of the present invention, and it will be understood that other modifications and variations could be made by those skilled in the art without departing from the principles of the invention, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (2)
1. The bridge construction method based on cradle construction is characterized by comprising the following steps of firstly determining the weight of a box girder needing to be lifted in the construction before selecting a cradle; selecting hanging baskets according to the weight of the box girder, wherein when the hanging baskets are selected, the load force of the two hanging baskets is less than the weight of the box girder, and the load force of the four hanging baskets is greater than the weight of the box girder; when the box girder needs to be lifted, a hanging basket at one side and a hanging basket at the other side in the same construction area are combined, and the rhombic trusses of the two hanging baskets are overlapped; one side hanging basket and the other side hanging basket of the other same construction area are combined, and the rhombic trusses of the two hanging baskets are overlapped; and hoisting the box girder between two adjacent construction areas by the reconstructed hanging basket.
2. The bridge construction method based on hanging basket construction as claimed in claim 1, wherein an installation plate is arranged on the side of the diamond truss, through holes are arranged on the installation plate, and when the two diamond trusses are combined, the installation plates on the two diamond trusses are overlapped and fixed by fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203445.2A CN109778720B (en) | 2019-03-18 | 2019-03-18 | Bridge construction method based on cradle construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203445.2A CN109778720B (en) | 2019-03-18 | 2019-03-18 | Bridge construction method based on cradle construction |
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| Publication Number | Publication Date |
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| CN109778720A CN109778720A (en) | 2019-05-21 |
| CN109778720B true CN109778720B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910203445.2A Active CN109778720B (en) | 2019-03-18 | 2019-03-18 | Bridge construction method based on cradle construction |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112609577A (en) * | 2020-11-23 | 2021-04-06 | 中国水利水电第四工程局有限公司 | Continuous beam segment prefabrication and assembly method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149771A1 (en) * | 2012-04-02 | 2013-10-10 | Ulma C Y E, S. Coop | Movable structure suitable for supporting a formwork of a new bridge section in cantilever |
| CN104074145A (en) * | 2014-06-30 | 2014-10-01 | 广东省基础工程公司 | Closure-section refit construction method for hanging basket |
| CN105088971A (en) * | 2015-09-09 | 2015-11-25 | 上海城建市政工程（集团）有限公司 | Mid-span closure construction method of corrugated steel web PC box girder cable-stayed bridge |
| CN204940131U (en) * | 2015-09-09 | 2016-01-06 | 上海城建市政工程（集团）有限公司 | A kind of hanging basket device of Wavelike steel webplate parts |
| WO2018133045A1 (en) * | 2017-01-20 | 2018-07-26 | 中国铁建大桥工程局集团有限公司 | Method for mounting self-anchored suspension bridge |
| CN108547223A (en) * | 2018-03-12 | 2018-09-18 | 中交第二航务工程局有限公司 | The hybrid beam bridge construction method of steel reinforced concrete overlapping |
-
2019
- 2019-03-18 CN CN201910203445.2A patent/CN109778720B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149771A1 (en) * | 2012-04-02 | 2013-10-10 | Ulma C Y E, S. Coop | Movable structure suitable for supporting a formwork of a new bridge section in cantilever |
| CN104074145A (en) * | 2014-06-30 | 2014-10-01 | 广东省基础工程公司 | Closure-section refit construction method for hanging basket |
| CN105088971A (en) * | 2015-09-09 | 2015-11-25 | 上海城建市政工程（集团）有限公司 | Mid-span closure construction method of corrugated steel web PC box girder cable-stayed bridge |
| CN204940131U (en) * | 2015-09-09 | 2016-01-06 | 上海城建市政工程（集团）有限公司 | A kind of hanging basket device of Wavelike steel webplate parts |
| WO2018133045A1 (en) * | 2017-01-20 | 2018-07-26 | 中国铁建大桥工程局集团有限公司 | Method for mounting self-anchored suspension bridge |
| CN108547223A (en) * | 2018-03-12 | 2018-09-18 | 中交第二航务工程局有限公司 | The hybrid beam bridge construction method of steel reinforced concrete overlapping |
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| CN109778720A (en) | 2019-05-21 |
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