基于抗震性能加固拱桥的力学特性分析

该文阐述了某病危拱桥病害产生的机理,采用空间杆系分析方法,借助计算程序TDAPⅢ建立空间模型,对该桥加固前后基于抗震性能的动力特性进行研究。结果表明:增大拱上立柱和腹拱圈的整体刚度,能有效地提高结构自振频率,增强结构的抗弯和抗剪性能,从而提高结构的抗震能力。

Analysis on Mechanics Characteristics of Reinforcing Arch Bridge Based on Anti-seismic Performance

The article sets forth the mechanism caused by the fault of a damaged arch bridge.The space bar system analysis method and the calculating program TDAPⅢto set up the space model and to study the dynamical characteristics based on the anti-seismic performance before and after this bridge are reinforced.The result shows that the natural vibration frequency of structure can be efficiently increased and the resistance ability to bending and shearing of structure can be strengthened by increasing the integral rigidity of the upright post and web arch ring so as to enhance the anti-seismic capacity of structure.