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Abstract

Chishi Large Bridge along the Rucheng–Chenzhou Expressway is a four-tower, double-cable plane, and prestressed concrete cable-stayed bridge with a span of (165 +3 × 380 +165) m, with the highest main tower of 286.63 m. The volume of the heaviest beam section 1# block reaches 269.2 m3, and the height difference between the main beam and the ground is about 185 m. The main beam of the bridge adopts five key technologies, including 0# block construction technology under multiple constraints, super-large front fulcrum bucket hanging construction with 7 600 kN bearing force, unconstrained closure technology of side span, incremental launching and closure technology of mid-span and sub-mid-span, vertical downstay cable +TMD main beam wind resistance research, to solve the technical problems of the construction of ultra-high and overweight prestressed concrete main beams of the bridge. It can provide reference for the construction of the main beam of the same type of cable-stayed bridge.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.017

First Page

99

Last Page

104

Submission Date

May 2025

Reference

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