【摘要】 四川省高海拔地区某跨沟拱形溢洪道结构作为研究对象,为减小温度和地震共同作用下的结构响应,对结构温度缝的数量和位置进行优化设计。针对温度和地震作用分别研究了有无温度缝措施下的结构应力分布,以该跨沟拱形溢洪道结构多个位置变权重下的应力组合作为目标函数,采用遗传算法,将温度缝的数量和位置作为设计变量进行结构优化。结果表明,温度缝的设置对于减小结构的温度作用有利,但会增大结构在地震作用下的应力;基于遗传算法对温度缝的位置和数量进行优化研究,可为同类型工程设计提供参考。更多还原

【Abstract】 Based on a ditch spillway arch structure in Sichuan as the research object, in order to reduce the structural response under the action of temperature and earthquake, the number and position of temperature joints are optimized. According to temperature and seismic action respectively studied the presence of temperature joint structure stress distribution under the measures, to the spillway structure multiple locations across the ditch arch stress under the variable weight combination as the target function, the number and position as a design variable temperature seam for structural optimization by using genetic algorithm.The results show that the temperature joint is beneficial to reduce the temperature effect of the structure, but will increase the stress of the structure under the earthquake. The location and number of temperature joints are optimized by genetic algorithm, which is very important improve the resistance of hydraulic structure under the action of earthquake and temperature.更多还原