矩形波纹钢地下综合管廊结构抗震性能分析

摘要:

本文以矩形断面波纹钢综合管廊结构为主要研究对象，结合有限元软件建立土层-结构数值模型，系统地探究了地震加速度峰值、波纹钢结构刚度、土体刚度等因素对矩形断面波纹钢综合管廊结构抗震性能的影响规律，明确了矩形断面波纹钢综合管廊结构在地震荷载作用下不同工况的最不利受力和变形位置。研究结果表明管廊结构内力与变形随地震加速度峰值增大而增大；管廊结构刚度增大，结构内力随之增大，相反地结构变形随之减小；管廊结构内力、变形和层间位移角均随土体刚度的增大而减小，且土层刚度越小，对结构变形影响更为明显。

Abstract:

This paper took the rectangular section corrugated steel comprehensive pipe gallery structure as the main research object, established the soil structure numerical model combined with the finite element software, and systematically explored the influence law of seismic acceleration peak, corrugated steel structure stiffness and soil stiffness on the seismic performance of rectangular section corrugated steel comprehensive pipe gallery structure. The most unfavorable stress and deformation positions of corrugated steel composite pipe gallery structure with rectangular section under different working conditions under seismic load were defined. The results show that the internal force and deformation of the pipe gallery structure increase with the increase of the peak seismic acceleration. When the stiffness of the pipe gallery structure increases, the internal force of the structure increases, on the contrary, the structural deformation decreases. The internal force, deformation and inter story displacement angle of pipe gallery structure decrease with the increase of soil stiffness, and the smaller the soil stiffness, the more obvious the influence on structural deformation.