Mechanical Properties of Corrugated Steel Arch Bridges with Concrete Arch Protection: Fid-Bau Portal

Mechanical Properties of Corrugated Steel Arch Bridges with Concrete Arch Protection

Sun, Guanyu / Sun, Quansheng / Kim, Changsop / Fei, Hongyu / Zhang, Haoyang

This paper introduces an innovative technology based on an actual corrugated steel arch bridge project. The design of steel-concrete composite structure in which concrete arches are poured around the corrugated steel plate arch ring is proposed to improve its mechanical performance. Field tests and numerical simulations were conducted. In the field test, the load was applied to the structure by loading a heavy truck, and the strain and displacement of different positions of the corrugated steel arch ring section were tested. Two models of corrugated steel arch bridges with and without concrete arch protections were established through finite-element software to study the effect of concrete arch protections on the mechanical properties of corrugated steel arch bridges and verify the test results. The model calculation results showed that when a concrete arch protection was applied, the stress and displacement of each position of the corrugated steel plate arch ring were reduced to varying degrees. The calculated values of the numerical model were also compared with the measured values of the field trials, and it was found that the calculated value is generally slightly higher than the measured value. This study showed that the mechanical performance of corrugated steel arch bridges could be effectively improved by applying concrete arch protection on the corrugated steel arch ring.