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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:武汉理工大学学报 交通科学与工程版

Affiliation of Author(s):建设工程学部

Issue:2

Page Number:298-301

ISSN No.:2095-3844

Abstract:The rib of skewed special-shape arch bridge, under both in and out of plane cable force, is a biaxial bending and compression member, with obviously spatial characteristics. Using fiber element method, considering both material and geometrical nonlinearity, the whole process for ultimate load-carrying capacity of Zhangjiakou Tong-Tai Bridge was studied. With the load increasing, cables reached the limit load one by one; simultaneously, the arch rib deformed both in and out of plane; a cross section near one arch foot yield gradually, under the action of axial force and two-way bending load; finally, while the cables all yield, the main beam was closed to a simply supported beam, and came into being a plastic hinge in the middle section; the whole bridge reached load-carrying limit. Fiber model could accurately simulate a arch rib section under two-way compression bending load of the whole process step by step into the plastic, and applied to simulate material nonlinear beam member under complex force.

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