基于ANSYS的漕河渡槽30m跨槽身有限元分析  

Finite element analysis based on ansys in 30m cross trough body of Caohe Aqueduct

作　　者：崔福占[1] 桑军伟 王欢[1] CUI Fuzhan;SANG Junwei;WANG Huan(Hebei Design Institute of Water Conservancy and Hydropower,Tianjin 300250,China;Hebei Branch of Administration of South-to-North Water Diversion Middle Route Project,Shijiazhuang 050035,China)

机构地区：[1]河北省水利水电勘测设计研究院,天津300250 [2]南水北调中线干线工程建设管理局河北分局,石家庄050035

出　　处：《南水北调与水利科技》2018年第S01期83-87,共5页South-to-North Water Transfers and Water Science & Technology

摘　　要：根据多槽式矩形槽身结构特点及其受力特点,漕河渡槽采用结构力学方法按照平面问题进行槽身结构设计,分别进行横向和纵向计算。根据漕河渡槽设计成果,利用三维有限元软件(ANSYS)建立渡槽30 m跨槽身实体模型,并进行了有效的仿真模拟,计算得到了结构多工况下的应力场。结果表明:渡槽槽身受力均匀,各部位以压应力为主,且应力值均小于混凝土抗压强度设计值;在冬季,拉杆产生2.0 MPa以上的拉应力,超出了混凝土抗拉强度设计值。分析认为,槽身结构设计是合理的,渡槽安全运行处于可控状态;为确保渡槽运行安全,建议冬季及时对槽内冰层进行处理。According to the structure of multitroughs rectangular aqueduct and its mechanical characteristics,Caohe Aqueduct groove body was designed by the structure mechanics method in the light of the plane problem.According to the design of Caohe Aqueduct,the 3D finite element software(ANSYS)was adopted to build the 30m cross trough body model,and analogue simulation has been carried out,and the stress field of the structure under different working conditions are calculated.The results show that the aqueduct groove body has a uniform force,the compressive stress is the main component in all parts,And the stress value is less than the design value of concrete compressive strength.In winter,more than 2 MPa of the tensile stress occur on the tension bar,and the value exceeds the design tensile strength of concrete.Analysis considers,the design of the groove body is reasonable,and the safe operation of the aqueduct is in the controllable state.In order to ensure the safe operat ion of aqueduct,suggested that the ice in the tank be treated in winter.

关 键 词：ANSYS 渡槽 有限元 应力分析 预应力 边界条件 南水北调工程 

分 类 号：TV672[水利工程—水利水电工程]