低水头灯泡贯流式厂房结构整体稳定研究-水利工程专业论文.docx

万方数据 万方数据 摘要I 摘要 I 西安理工大学工程硕士 西安理工大学工程硕士专业学位论文 II Ab Abstract Title：RESEARCH ON INTEGRAL STABILITY OF LOW HEAD BULB CROSS FLOW POWERHOUSE STRUCTURE Major：Hydraulic Engineering Name： Ruobing Xu Signature: _____________ Supervisor：Prof.Bin Liu Signature: _____________ Prof.Mangtang Ding Signature: _____________ Prof.Shouyi Li Signature: _____________ Abstract Tubular turbine powerhouse is a good method to develop low head hydropower resources. It is widely applied in the following twenty- five meters head hydropower station. Low head hydropower resources are mainly located in the middle and lower reaches plains with dense population or hilly lands. In those areas the industry, agriculture and economy are relatively developed; Therefore the development of the small to medium- sized low head hydropower station increasingly attracts attention. However, the development technique is such complex and it requires strong efforts on researches. For tubular turbine powerhouse, the upstream water retaining structure and the floor is linked together under the upstream and downstream water pushing force, the force is complex. Therefore, to the plant monolith stability of three dimensional finite element stress analysis is very necessary. Based on the finite element method, this paper chose a bulb tubular turbine powerhouse as subject, selected a unit-block from a bulb tubular structure to establish a three-dimensional finite element calculation model, through the simulation and analysis to evaluate the security and rationality about the structures of powerhouse, and provide a basis for the designing of reinforcement. On the foundation of safety factor method, this paper considered six different conditions. Each of those conditions can be divided into uplift pressure reduction or not. According to the calculation and analysis for the stability against sliding, anti- floating stability of powerhouse dam section, and normal stress of the foundation surface,