界首市裕民桥总体计算与关键构件分析

摘要:

界首市裕民桥主桥为主跨142m的自锚式悬索桥。该桥的设计过程，主要包括确定桥梁总体布置、静力有限元建模、整体稳定性分析、缆索线形确定、运营阶段内力分析以及构件强度验算等步骤。此外，还需要建立动力模型，以了解桥梁自振模态，并对结构在地震作用下的响应进行分析，进而验算桥梁的抗震性能。通过总结设计过程中的一些关键步骤，如悬索桥建模、稳定性分析、缆索系统设计、主塔计算长度确定、抗震性能研究等，力求为类似桥梁的设计提供较有价值的参考。

Abstract:

The main bridge of Yumin Bridge in Jieshou City is a self-anchored suspension bridge with a main span of 142m. The design process of the bridge mainly includes the steps of determining the overall layout of the bridge, static finite element modeling, overall stability analysis, cable alignment determination, internal force analysis during operation, and component strength checking. In addition, it is necessary to establish a dynamic model to understand the natural vibration mode of the bridge, analyze the response of the structure under the action of earthquake, and then check the seismic performance of the bridge. By summarizing some key steps in the design process, such as suspension bridge modeling, stability analysis, cable system design, effective length of cable tower, seismic performance research, etc., we strive to provide a more valuable reference for the design of similar bridges.