Segmental prefabricated composite section spine girder bridge structure system

Abstract

The invention provides a segmental prefabricated composite-section spine girder bridge structure system. The spine girder bridge structure system is characterized in that the section of a spine girderis mainly formed by compounding a core longitudinal beam and a rear-mounted cantilever arm; the two parts can adopt a precast concrete member assembled by sections at the same time, or can be partially precast and assembled and partially cast in place; on the basis of the two parts, the structural system further comprises various corresponding longitudinal and transverse joints at the same time.The construction sequence of the structure system is as follows, firstly, core longitudinal beam construction within a span is completed, and then the cantilever arm is mounted, so the core longitudinal beam is constructed step by step after the core longitudinal beam is formed. According to the structural system, the construction speed can be increased, the structural economy is improved, the design and construction key technology of the segmental prefabricated assembled concrete bridge is improved, and the development of the segmental beam prefabricated assembling technology is promoted.

Description

technical field [0001] The invention belongs to the technical field of bridge components and construction thereof, in particular to a segmental prefabricated composite cross-section spine girder bridge structure system. Background technique [0002] With the rapid development of the economy and society, the state has proposed the industrialization of construction, and issued a series of documents that clearly require the vigorous development of prefabricated buildings. Segmentally prefabricated and assembled concrete bridges are in line with the national industrial development direction, and have many advantages such as green environmental protection, small impact on the environment and traffic, convenient transportation, fast construction, beautiful appearance, durability and low life-cycle cost. In recent years, they have been used in domestic railways, highways, It has been widely promoted and applied in rail transit and municipal engineering, and has achieved good result...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of difficult transportation, difficult construction, long construction period and high cost of wide bridge segmental prefabricated concrete beams existing in the prior art, and provide a segmental prefabricated composite cross-section spine beam bridge structure system to To achieve the purpose of speeding up construction, increasing structural economy, improving the design and construction key technologies of segmental prefabricated concrete bridges, and promoting the development of segmental beam prefabricated assembly technology

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