A construction method of simply supported beam segments of bridges in plateau alpine regions

A technology for alpine regions and construction methods, applied in bridges, bridge materials, bridge construction, etc., can solve the problem of rare assembly and construction of simply supported beam segments, and achieve easy control of construction quality, no traffic interference under bridges, and construction. The effect of work safety

Active Publication Date: 2017-01-11
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG +1
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Problems solved by technology

[0002] In the past 20 years, segmental prefabricated and assembled simply supported beams and continuous beams have been recognized as one of the development directions of current bridges because of their fast construction speed and high beam quality. It is widely used, but the segmental assembly construction of simply supported beams in plateau and alpine regions is rare

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  • A construction method of simply supported beam segments of bridges in plateau alpine regions

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0029] A construction method for segmental assembly of simply supported beams of bridges in plateau alpine regions, in which the prefabricated segmental assembly method uses mobile supports to assemble prefabricated segments, stretches them in situ at the top of the pier, and first "breaks the whole into parts" and then "breaks the parts into pieces". Whole" construction method. The principle of its construction technology is to divide a concrete beam into several sections, prefabricate the sections first, and then cast the joints in place, commonly known as wet joints, or glued commonly known as dry joints to connect the sections together. The pressure on the concrete segments causes the segments to form a monolithic structure.

[0030] When the mobile support is used for segmental assembly beam construct...

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Abstract

The invention discloses a bridge simply supported beam segment assembling construction method for a frigid plateau region. The method comprises the steps of girder fabrication yard building, beam segment prefabricating, mobile support assembling, beam segment conveying and hoisting, wet joint construction, prestressed steel strand tensioning and prestressed duct grouting. According to the construction method, SX64 / 2200 mobile supports are adopted, the construction technology is advanced, the mechanical degree is high, the bridge forming speed is high, and no interference is produced for underbridge traffic; frigid plateau region wet joint construction is carried out inside the mobile supports, and the construction quality is easy to control; due to the fact that frigid plateau region box beam segment assembling construction is mainly carried out inside the mobile supports, construction is safe.

Description

technical field [0001] The technical field of building construction of the present invention specifically refers to a construction method for segmentally assembling simply supported beams of bridges in plateau alpine regions. Background technique [0002] In the past 20 years, segmental prefabricated and assembled simply supported beams and continuous beams have been recognized as one of the current bridge development directions due to their fast construction speed and high beam quality, and have been recognized in the construction of railways and highways in my country. It is widely used, but the segmental assembly construction of simply supported beams in plateau and alpine regions is rare. Contents of the invention [0003] The object of the present invention is to provide a construction method for segmentally assembling simply supported beams of bridges in plateau alpine regions, the construction quality of which is easy to control, and the construction cost is relative...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D21/06E01D101/28
CPCE01D21/00E01D21/06E01D2101/28
Inventor 何十美丁浩航
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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