基于损伤模型的输泄水塔地震响应分析
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摘要
输泄水塔结构属于高耸水下建筑物,其地震安全性至关重要。以某水电站输泄水塔为例,采用ABAQuS有限元仿真技术进行了地震时程分析。针对输泄水塔部分嵌入地下、锁扣板设置的结构特点,建立了输泄水塔-库水-地基的三维动力有限元附加质量模型。考虑混凝土材料的非线性损伤特性,应用动力时程分析法分析了输泄水塔结构在静力荷载与地震叠加作用下的动力特性及应力变形分布情况,可为同类工程的设计与研究提供参考。
The water transport and drain tower belongs to high underwater structure and their seismic safety is very important.Taking a water transport and drain tower in a hydropower station as study case,the seismic analysis is performed with ABAQUS finite element simulation technology.In view of the structure characteristics of tower with a part embedded into ground and arranging locking plates,the three-dimensional dynamic model of tower-reservoir water-foundation with added water mass is established.By considering the nonlinear damage characteristic of concrete,the dynamic characteristics and stress and deformation distribution of water transport and drain tower under the joint action of static and seismic loads are analyzed with time-history analysis method.The results provide some directive advice for the design and research of other similar projects.
The water transport and drain tower belongs to high underwater structure and their seismic safety is very important.Taking a water transport and drain tower in a hydropower station as study case,the seismic analysis is performed with ABAQUS finite element simulation technology.In view of the structure characteristics of tower with a part embedded into ground and arranging locking plates,the three-dimensional dynamic model of tower-reservoir water-foundation with added water mass is established.By considering the nonlinear damage characteristic of concrete,the dynamic characteristics and stress and deformation distribution of water transport and drain tower under the joint action of static and seismic loads are analyzed with time-history analysis method.The results provide some directive advice for the design and research of other similar projects.
引文
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[2]杨乐,王海军,赵典申.高耸岸塔式进水口结构动静力特性仿真分析[J].水力发电,2011,37(5):25-28.
[3]费康.ABAQUS软件在高进水塔动力分析中的应用[J].水利与建筑工程学报,2008,6(4):10-12,19.
[4]徐远杰,唐碧华.三板溪大吨位预应力中墩三维有限元分析[J].武汉大学学报:工学版,2004,37(4):1-5.
[5]胡少伟,游日.南水北调中大型渡槽隔震分析[J].灌溉排水学报,2008,27(6):24-26.
[6]胡少伟,游日.南水北调大型渡槽结构抗震安全性研究[J].防灾减灾工程学报,2011,31(5):496-499.
[7]张继勋,任旭华,王海军,等.泸定水电站泄洪洞进水塔结构抗震安全分析[J].中国农村水利水电,2010,43(2):124-127.
[8]侯红英,郭德存,刘红帅.地震动特性对岩质边坡安全系数的影响[J].水力发电,2012,38(10):17-20,66.
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