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Abstract

Based on the design optimization scheme of a super-large steel tube arch bridge and the integrated joint analysis method of modeling-trial design, this paper adopted the specification CECS254-2009 "Technical Specification of Hollow Concrete-Filled Steel Tubular Structures", and carried out a systematic influence analysis by calculating the verification coefficient of stable bearing capacity for the design parameters of the hollow ratio of hollow concrete-filled steel tubes and wall thickness of steel tube sections. The results show that when the outer diameter of the steel tube is 1360 mm, the slope of the curve of the influence of the hollow ratio on the verification coefficient of stable bearing capacity increases with the rising hollow ratio, which has a significant effect on the bearing capacity of the component. The verification coefficient of stable bearing capacity decreases linearly with the increasing wall thickness of steel tubes. Additionally, the slope does not change significantly with the rising wall thickness of steel tubes, and its influence on the bearing capacity of the component is relatively small.

Publication Date

8-18-2022

DOI

10.14048/j.issn.1671-2579.2022.04.016

First Page

92

Last Page

95

Submission Date

May 2025

Reference

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