The large-scale cavitation water tunnel testing facility is currently the largest water tunnel system in China.To evaluate the structural strength and seismic design safety of the large cavitation water tunnel test facility,a three-dimensional numerical analysis of the water tunnel structure was carried out.The finite element model of the complete structure of the cavitation water tunnel was established,and the structural strength under the normal working condition and the extreme working condition considering the seismic load was calculated and analyzed.The seismic inertial acceleration load was calculated based on the mode-superposition response spectrum method,and the seismic displacement response of the structure was checked.The results show that the structural deformation of the cavitation water tunnel is mainly reflected in the expansion deformation of the inner wall of the water tunnel under the normal working condition,and mainly reflected in the horizontal displacement of the top of the water tunnel caused by the seismic load under the extreme working condition.The high stress regions of the water tunnel are mainly located on the inner wall and the stiffener at the corner of the structure,which can pay the way for building the large cavitation water tunnel of our country in the future.
关键词
空泡水洞/结构强度/振型分解反应谱法/地震载荷
Key words
cavitation water tunnel/structural strength/mode-superposition response spectrum method/seismic load
维普
万方数据