城市曲线斜支承桥梁的分析

ANALYSIS OF CURVED SKEW BRIDGE IN URBAN DISTRICTS

本文以线性正交支承曲线格子梁理论为基础、对城市高架桥和立交桥中正在研究的斜支承曲线桥梁提出解析方法。通过与日本一座斜支承三跨连续的曲线桥的理论值及实验值的比较,计算结果吻合良好,验证了本方法的可靠性。此外,本文还分析了斜支承的斜角对曲线桥截面内力与支座反力的影响。

This paper proposes an analytical method of curved skew bridge in urban districts based on a curved grillage theory with linear radial bearings. Experimental data of a circularly curved skew box beam highwaybridge as well as the theoretical values obtained by the method of transfer matrix have been compared with the analytical method developed herein. The results are in good agreement. This analysis was part of the research project on the theoretical analysis of the elevated bridge in urban area, supported by the nationalscience fund also included in this paper are the influences of skew supports on the section forces and bearing reactions of curved bridge.