Self-anchored hybrid beam cable-stayed suspension cooperative system bridge

Abstract

The invention discloses a self-anchored hybrid beam cable-stayed suspension cooperative system bridge, belongs to the technical field of constructional engineering, and particularly relates to a design for a large-span bridge in the bridge engineering. The bridge is characterized in that after a cable tower and side hole piers are manufactured, a cantilever is assembled to a concrete main bridge of the cable-stayed bridge; after the cantilever is assembled to a side hole, a main cable is hung, two ends of the main cable are anchored on an anchor block at the outer end of a concrete beam respectively, and the anchor block is pulled to a temporary anchor structure by a temporary anchor cable; a hanging rod is hoisted to span each section of steel main beam by a cable crane; after folding, the temporary anchor cables are detached in batch, and the main cables are completely anchored at two ends of the concrete main beam so as to finish the system conversion from temporary ground anchorage to self anchorage; and deck paving and rail construction are finished, the cable force of the whole bridge is adjusted, and the bridge is formed. The self-anchored hybrid beam cable-stayed suspension cooperative system bridge has the effects and advantages of solving the problems of the large-span bridge in design and construction, reducing the height of the tower, fully playing a role of materials, reducing the construction cost, shortening the construction period and reducing the risk in the construction process.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to the design of bridges in bridge engineering, in particular to the design of long-span bridges. Background technique [0002] Currently, three types of bridges are commonly used in the design of long-span bridges: [0003] One type of bridge scheme is the suspension bridge scheme. The suspension bridge with the largest span that has been built now is the Akashi Kaikyo Bridge in Japan, with a main span of 1991m. However, the amount of steel used for the main cable and the main girder of the suspension bridge is relatively large, which increases the construction cost. It is often necessary to build huge anchorages in water, which is difficult to construct, and its volume increases rapidly with the increase of the span. Studies have shown that the cost of a suspension bridge with a main span of 1000m is 16.7% higher than that of a cable-stayed bridge with the same spa...

AI Technical Summary

Problems solved by technology

This bridge type has appeared in the scheme design of many domestic cross-sea bridges such as Lingdingyang Bridge in Guangdong, Stonecutters Island Bridge in Hong Kong, and Gaopingxi Bridge in Taiwan. At present, this bridge type mainly stays in the scheme design stage and is ground anchored. The system requires a huge ground anchor, the construction is difficult and the project cost is high

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