摘要
建立城市地下综合管廊有限元数值模型,分析其在地震作用下的动力响应和力学特性,并与静力状态下管廊受力特性进行比较,研究结果表明:地基对地震加速度有明显放大作用,管廊最大加速度为Kobe地震波最大加速度的2.7倍;在地震作用下,管廊墙板弯矩随地震作用变化明显,边墙和底板节点弯矩最大值达静力状态下的3.9倍,跨中弯矩最大值为静力状态下的1.5倍;管廊中墙压力随地震作用变化不大,而边墙、顶板和底板的最大压力可分别达到静力状态下的1.5、1.7和1.8倍。研究结果可供地震作用下综合管廊设计参考。
A finite element model was conducted to investigate the dynamic performance of the utility tunnel under seismic loading, then the dynamic performance was compared with that under the static state.The results show that the foundation causes an obvious amplification effect on the acceleration, and the maximum acceleration of the utility tunnel is 2.7 times the maximum acceleration of the Kobe seismic wave. Under seismic loading, the bending moment of the structure changes obviously. The maximum bending moment of the side wall and the bottom plate intersection is 3.9 times that under the static state, and the maximum bending moment of the midspan is 1.5 times that under the static state.The pressure of the utility tunnel middle wall changes little with the seismic loading, but the maximum pressure of the side wall, top plate and bottom plate can reach 1.5, 1.7, and 1. times the static state, respectively. The results can be used as reference for the design of the utility tunnel under seismic loading.
作者
孙先春
SUN Xianchun(Shanghai Municipal Engineering Design Institute（Group）Co.,Ltd,Shanghai 20009)
出处
《安徽建筑大学学报》
2018年第2期6-10,共5页
Journal of Anhui Jianzhu University
关键词
关键字
综合管廊
地震作用
动力特性
数值模拟
utility tunnel
seismic loading
dynamic performance
numerical simulation
