摘要
以黄河小峡水电站坝址下游一连续拱桥为工程背景 ,对空腹式连续拱桥自振特性有限元计算模型的选取进行了探讨及理论分析 ,通过三种计算模型的对比分析 ,重点讨论了拱上结构抗弯刚度和质量的处理 ,并考虑了拱上结构与主拱圈的连接形式 .最后将计算结果与试验结果进行了对比分析 ,说明本文所选取的计算模型能正确模拟实际结构 .
Taking the arcade built near the dam of the Xiaoxia hydroelectric station at the lower reach of the Huanghe river as an engineering example, the choice of the finite element model in analyzing the natural vibration characteristics of the arcade is discussed. Based on analysis and comparison of three calculating models, disposal of the bend risistance hardness and mass of architecture on arch is discussed emphatically, and the form of joint between arch and architecture on arch is considered. Comparing the calculated result with the experimental result, the conclusion of simulating the actual structure by models chosen in this paper is reached.
出处
《兰州交通大学学报》
CAS
2001年第6期40-43,共4页
Journal of Lanzhou Jiaotong University
关键词
拱桥
连续拱桥
计算模型
自振特性
arch bridge
arcade
calculating model
natural vibration characteristics
