毕业设计（论文）-北京地铁15号线府前街站结构设计.docx

PAGE \* MERGEFORMATI 北京地铁15号线府前街站结构设计 摘 要 本设计是针对北京地铁15号线府前街站的车站主体结构设计。本文首先对车站进行建筑设计，确定建筑尺寸，满足相关限界要求。车站主体为两层三跨箱型闭合框架结构，围护结构采用地下连续墙，地连墙兼做外墙，与主体结构采用重合墙的方式结合。围护结构采用逐层开挖支撑轴力不变法计算内力，并用理正深基坑软件进行完整设计。主体结构分别考虑竣工阶段和正常使用阶段荷载，并采用不同的荷载组合计算结构内力。主体结构按弹性地基上的等代闭合框架进行计算，将闭合框架结构拆分为施加未知力的上部两铰刚架和弹性基础梁，然后用立法求解未知力，最终解得框架结构内力。同时，主体结构采用SAP2000结构设计软件进行断面框架内力分析与梁柱体系框架内力分析，使用弹簧模拟弹性地基。结构构件根据承载力极限状态及正常使用极限状态的要求，分别进行承载能力计算、变形及裂缝宽度验算。 全套图纸加扣 3346389411或3012250582 关键词：地铁车站 结构设计 围护结构 闭合框架 弹性地基 PAGE \* MERGEFORMATII The Structure Design of Fuqian Station on No.15 Line of Beijing Metro Abstract This paper aims at the major structure design of Fuqian station on No.15 line of Beijing Metro. Architectural design is firstly concerned in order to determine the dimensions of the station and meet the relevant requirements of metro gauge. Major structure of Fuqian station is 3-span, 2-story closed-frame. Underground continuous wall is used as enclosure structure which also acts as the external wall of the underground structure. Underground continuous wall combines with the major structure in form of coincidence wall. The formula of excavating layer by layer with no changing for the load is employed to calculate internal forces of the enclosure structure. Later, the software of Lizheng Deep Excavation is used to entirely design the underground continuous wall. The load on the major structure in completion phase and that in using stage should be considered respectively. In both stage, different load combinations should be used to calculate the structural internal forces. When performing structure analysis, the major structure is considered as closed-frame on the elastic foundation. Separating the closed-frame into two parts (upper two-hinged rigid frame and lower beam on elastic foundation) with unknown forces imposed on them. The unknown forces can be worked out by force method, and the internal forces of frameworks can be finally calculated. Also, the internal forces of the cross section of the fram