Segmental assembly bridge erecting machine for construction of small curved bridge

Abstract

A segmental assembled bridge girder erection machine for the construction of a small curved bridge at least comprises girders which can be automatically bent, a rear support leg, a front support leg, at least one middle support leg, a hoisting crown block which can move along a broken line, and a plurality of hoists, wherein the girders which can be automatically bent comprise two parallel steel girders, and transverse bracings are not arranged between the two steel girders; each steel girder comprises a middle steel box girder, and a front guide girder and a rear guide girder which are located on the two sides of the middle box girder; the girders which can be automatically bent are supported through the rear support leg and the front support leg which are arranged below the girders, as well as the middle support leg located between the front support leg and the rear support leg; the hoisting crown block which can move along the broken line is arranged at the upper parts of the girders which can be automatically bent, and can move back and forth; the hoists are further arranged on the girders which can be automatically bent. Therefore, the mini-sized curved bridge with a radius of at least 60 m can be passed and erected through the segmental assembled bridge girder erection machine; the segmental assembled bridge girder erection machine satisfies various performance requirements, achieves remarkable economic and social benefits, and fills the gaps of small-curvature girder erection and cross bridge girder erection machines at home and abroad.

Description

technical field [0001] The invention relates to bridge construction, especially to the technical field of construction equipment for municipal bridge construction, and in particular to a segmental assembly bridge erecting machine capable of erecting bridges with small curvature radius. Background technique [0002] The construction of municipal rail transit using segmental assembly bridge erecting machines has a certain history at home and abroad. Relatively speaking, foreign municipal construction is more popular, such as the Tuas light rail in Singapore, the UiJeongBuLRT project in South Korea, and the Sifeng Bridge in Beijing, Xiamen BRT project and Guangzhou Metro Line 6 in China. machine for construction. In the assembly and erection of domestic segmental prefabricated box girders, generally speaking, the plane curve is relatively large, the minimum turning radius of a 40m span bridge is about 500m, and the ratio of the minimum turning radius to the span is usually abo...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there is no suitable large-scale machine to operate the segmental assembly construction with a certain curvature, resulting in a lot of inconvenience in construction

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