地质力学学报2018，Vol.24Issue(2)：238-243,6.DOI:10.12090/j.issn.1006-6616.2018.24.02.025
地裂缝与斜交地铁隧道动力响应数值分析
NUMERICAL ANALYSIS ON DYNAMIC RESPONSE OF THE OBLIQUE METRO TUNNEL IN GROUND FISSURE AREA
摘要
Abstract
A numerical analysis model,with an oblique crossing of 60°between horseshoe-shaped metro tunnel and ground fissure, was built with ABAQUS to study the dynamic response of the oblique metro tunnel in ground fissure area under vibration load of metro.The results show that the soil vibration near the tunnel is stronger,and the acceleration amplitude of the ground near the tunnel are greater than those far away from the tunnel.The area with strong vibration response is within 120 metres along the metro tunnel,15 metres under the tunnel in vertical direction, and 20 metres in both sides of the tunnel. Ground fissure has a strong barrier effect on the propagation of subway vibration in the soil.The vibration of the soil below the ground fissure is stronger than that of the upper soil layer, and the vibration acceleration on the ground level of the soil nearly reduces to zero.关键词
地裂缝/地铁隧道/列车荷载/动力响应/数值分析Key words
ground fissure/metro tunnel/train load/dynamic response/numerical analysis分类
交通工程引用本文复制引用
刘蕾,刘雪玲,周金喜..地裂缝与斜交地铁隧道动力响应数值分析[J].地质力学学报,2018,24(2):238-243,6.基金项目
国家自然科学基金项目(41172257) （41172257）
青海省自然科学基金(2017-ZJ-909) （2017-ZJ-909）
青海省应用基础研究(2014-ZJ-706) （2014-ZJ-706）
