钢衬钢筋混凝土岔管三维有限元分析-水利水电工程专业论文.docxVIP

摘要 近年来，我国水电事业蓬勃发展，压力高尺寸大的岔管的应用和研究也成为 了设计的关键，在以往引水式电站设计中，岔管大都采用钢岔管，从设计观点看， 将会带来一系列的问题，特别是承受外水压力的情况下。另外，由于钢衬钢筋混 凝土岔管结构受力复杂，尚不完全了解其工作性态，常规的结构力学方法进行设 计，不能充分考虑钢衬和衬砌的联合工作特性。用有限元分析软件，提出符合实 际工程的有限元计算模型，是本文主要研究的内容之一。 本文综合了国内外研究钢衬钢筋混凝土岔管的文献和资料，综合评述了岔管 结构国内外发展的现状，阐明了本文研究的意义，介绍了钢衬钢筋混凝土岔管的 结构设计理论。简要的介绍了有限元数值分析的理论和方法，结合钢衬钢筋混凝 土岔管的受力特点，运用通用有限元计算软件ANSYS，构建钢衬、混凝土衬砌、 周围岩体等材料的计算模型以及模拟方法。 结合某电站钢衬钢筋混凝土岔管的工程实例，对其在不同工况下钢衬、周围 岩体的应力应变和位移分布规律，混凝土开裂等进行了三维有限元分析，通过分 析得到一些有益的结论，为完善埋藏式钢衬钢筋混凝土岔管结构的设计提供参 考。 关键词：钢衬钢筋混凝土岔管；钢衬；围岩；有限元分析；内水压力；应力应 ’ 变；开裂 r ， y ，， 备  AB STRACT In recent years，the construction of hydropower cause in our country has developed substantially．The big high-pressure bifurcation pipe’S application and research are keys of the design．The steel bifurcation pipe sections are used in the design of diversion type water power station in the past．If bifurcation designed plate lining will be had a series of problems，especially steel bifurcation is supported in the external water addition，for the complexity of the steel liner reinforced ’ pressure．In ● 、 concrete bifurcations，the pipe work morpholopy is not completely understood· Conventional structure analysis method can not make design about the characteristic of pipe and lining’S work sufficiently．One primary content of paper is that using the FEM analyse software to build the analysis model in accord with the actual project· Based on the literatures and materials researched on the steel liner reinforced concrete bifurcation pipe at home and abroad，the current situation has been comprehensively reviewed in this paper and enucleated the significance．And then the theory of structure design have been stated．The theory and method of FEM have been brief stated．In accordance with the loads of steel liner reinforced concrete bifurcation pipe,the analysis model and simulate method of the materials of steel lining， surrounding concrete and rock have been presented by using the universal finite element calculating software ANSYS．