基于有限元分析的特定拱形钢结构承载能力影响因素研究  

Study on the factors affecting the bearing capacity of arched steel structure based on the finite element analysis

作　　者：苗莉娟[1] 赵海凤[1] 

机构地区：[1]浙江建设职业技术学院建筑工程系,浙江杭州311231

出　　处：《西安建筑科技大学学报（自然科学版）》2013年第6期870-874,共5页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：浙江省教育厅资助项目(Y201225885)

摘　　要：建立拱形钢结构有限元计算模型,通过数值分析的方法找出特定拱形钢结构在主拱结构刚度、主拱支座边界约束刚度、主拱使用环境温度等不同影响因素作用下主拱内力和拱支座位移的变化规律.指出温度应力是影响拱形钢结构承载能力的关键因素,并提出减少或释放温度应力的措施.A finite element calculation model is established for arched steel structure. When affected by factors such as main arch＇s structural stiffness, boundary restraint stiffness of support, and environmental temperature, variety laws of main arch internal force and arch support displacement were found out. Temperature stress proues to be the critical factor to the bearing capacity of arched steel structure. Measures which can reduce or release temperature stress were also sug- gested.

关 键 词：拱形钢结构 承载能力影响因素 拱刚度 拱支座边界约束刚度 温度差 

分 类 号：TU312[建筑科学—结构工程]