广西师范学院学报(自然科学版)
廣西師範學院學報(自然科學版)
엄서사범학원학보(자연과학판)
JOURNAL OF GUANGXI TEACHERS EDUCATION UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
4期
78-82
,共5页
基坑工程%隧道%位移%三维数值模拟
基坑工程%隧道%位移%三維數值模擬
기갱공정%수도%위이%삼유수치모의
foundation pit engineering%tunnel%displacement%numerical simulation
运用ANSYS有限元软件,采用D-P弹塑性模型,通过改变隧道与基坑边线的距离,对地铁隧道的竖向和水平位移进行三维数值模拟,得出结果:基坑与隧道的距离越远,隧道各点的竖向位移越小;隧道的横向位移并不单调地随隧道与基坑距离的增大而减小,而是存在一个临界值使隧道的横向位移达到最大值,这个临界值约为基坑深度。
運用ANSYS有限元軟件,採用D-P彈塑性模型,通過改變隧道與基坑邊線的距離,對地鐵隧道的豎嚮和水平位移進行三維數值模擬,得齣結果:基坑與隧道的距離越遠,隧道各點的豎嚮位移越小;隧道的橫嚮位移併不單調地隨隧道與基坑距離的增大而減小,而是存在一箇臨界值使隧道的橫嚮位移達到最大值,這箇臨界值約為基坑深度。
운용ANSYS유한원연건,채용D-P탄소성모형,통과개변수도여기갱변선적거리,대지철수도적수향화수평위이진행삼유수치모의,득출결과:기갱여수도적거리월원,수도각점적수향위이월소;수도적횡향위이병불단조지수수도여기갱거리적증대이감소,이시존재일개림계치사수도적횡향위이체도최대치,저개림계치약위기갱심도。
Using ANSYS finite element software coupled with D-P elastoplastic model ,and by means of changing the tunnel and foundation pit edge distance ,vertical and horizontal displacement of metro tunnel is simulated with the result that the farther the distance between the foundation pit and tunnel , the smaller the vertical displacement of each point of the tunnel is ;And the lateral displacement of the tunnel is not simply reduced monotonously with the increase in the distance of tunnel and excavation , which however has a critical value of the lateral displacement of the tunnel reaching the maximum val-ue .T he critical value is about the depth of foundation pit .