【摘要】 上承式预应力拉杆拱形渡槽是一种新型的渡槽结构形式,与传统的渡槽结构形式相比结构更紧凑、不对桥墩产生水平推力而且槽墩轻巧、施工方便,有较高的工程应用价值。通过对界河上承式预应力拉杆拱形渡槽结构动力性能的监测分析并结合ANSYS有限元软件进行模态分析,对该类型结构形式的动力性能做了详细分析。分析结果表明:渡槽的振动周期较长,属于柔性结构;渡槽结构以槽身的横向振动为主;渡槽的竖向刚度相对较强,而槽身平面外刚度较弱。更多还原

【Abstract】 Top-supported pre-stressed tie-arc aqueduct is a new type of aqueduct,which possesses many advantages such as compact integer structure,no horizontal force on support piers,light pier and easy construction.Therefore,the new aqueduct has very high applicable values in engineering.Through on-site monitor and ANSYS modal analysis,detailed analysis on dynamic behavior of Jiehe top-supported pre-stressed tie-arc aqueduct is performed.The results show that the aqueduct is flexible structure because of long vibration period,transverse vibration is dominating,vertical rigidity is strong while out-plane rigidity of aqueduct is weak.更多还原