摘要
针对TENDAHO大坝溢洪道在施工过程中出现共8根钢梁预应力锚杆断裂事故,根据工程特性及施工形象面貌,结合混凝土结构设计规范,建立了推荐牛腿方案和钢梁方案的ANSYS有限元分析模型,对闸墩结构应力和抗滑稳定性进行计算.根据分析结果,并考虑到预应力锚杆存在的安全不确定性及重新布设预应力锚杆较困难等因素,设计推荐采用钢筋混凝土牛腿方案进行事故处理.
To the fracture accident of prestressed rock bolt involved 8 steel beams during the construction process of spillway engineering in TENDAHO Dam,the engineering characteristics and construction image are introduced. Based on the design standards of concrete structure,the recommended corbel scheme and steel beam scheme ANSYS finite element analysis models have been established to calculation and analysis the gate pier structure stress and anti sliding stability. According to the calculation results,the reinforced concrete corbels design scheme has been recommended with the consideration of the difficulties in re-arrangement of prestressed rock bolt and its uncertainty in safety.
出处
《浙江水利水电学院学报》
2014年第4期31-35,共5页
Journal of Zhejiang University of Water Resources and Electric Power
