Method for erecting large-span steel structure gallery bridge by utilizing tidal range

Abstract

The invention relates to a method for erecting a large-span steel structure gallery bridge by utilizing a tidal range, which belongs to the field of bridge construction. According to the method for erecting a large-span steel structure gallery bridge by utilizing the tidal range, the large-span steel structure gallery bridge is completely assembled and tailor-welded on a flat barge, the tide levelin tide water is utilized (the calculation height meets the barge draft depth), the barge is horizontally moved to a bridge pier left and right by using two tugs and rotates by 90 degrees when waiting for tide water to reach a high tide level (the calculation height ensures that the gallery bridge crosses surrounding obstacles), the gallery bridge is preliminarily erected at the position of a bridge pier, descends along with tide water and then is accurately positioned, a submersible pump is installed on the flat barge, the pump is started to pump water into the flat barge bin, separation ofa jig frame on the flat barge and the gallery bridge is accelerated, the barge drives the jig frame to move, and the gallery bridge is smoothly and successfully erected.

Description

technical field [0001] The invention relates to a method for erecting a large-span steel structure covered bridge by utilizing tidal range, and belongs to the field of bridge construction. Background technique [0002] According to the size of the span and the total length of multiple spans, the bridges are divided into: extra-large bridges, large bridges, medium bridges, small bridges, and culverts. Among them: extra-large bridge: the total length of the multi-hole span is ≥500 meters, and the single-hole span is ≥100 meters. Bridge: The total length of the multi-hole span is ≥100 meters, and the single-hole span is ≥40 meters. Middle bridge: 30m<total length of multi-hole span<100m, 20≤single-hole span<40m. Small bridge: 8 meters ≤ total length of multi-hole span ≤ 300 meters, 5 < single-hole span < 20 meters. Culvert: The total length of the multi-hole span is <8 meters, and the single-hole span is <5 meters. Based on the long-span bridge, the w...

AI Technical Summary

Problems solved by technology

Based on the long-span bridge, the weight of the corridor bridge is large, and due to the limitation of the hoisting environment, it is difficult to meet the requirements of conventional hoisting; the span of the corridor bridge structure is large, and it is difficult to control the accuracy of installation; the conventional hoisting installation process takes a long time, and the waterway occupies time. long

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