温度与地震共同作用下溢洪道结构优化研究
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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。
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.
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.
引文
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[2] 潘崇仁.克孜河渡槽运行期温度应力耦合分析[J].水利与建筑工程学报,2017,15(5):224-227.
[3] 谭燕,韩宇,高俊涛.U型槽用于超长地下室结构温度应力优化[J].湖北工业大学学报,2017,32(4):94-96.
[4] 李明超,张梦溪,王孜越.考虑诱导缝的碾压混凝土重力坝控裂结构温度场与温度应力数值分析[J].水利学报,2017,48(5):551-559,567.
[5] 王晓辉,邱超宇,何文涛.超长混凝土结构温度应力及裂缝控制研究[J].工程建设与设计,2019(8):165-166.
[6] 贾福杰,姚燕,雷素素,等.基于温度应力开裂架的剪力墙混凝土抗裂性能研究及工程应用[J].混凝土,2019(6):140-143.
[7] 张磊,彭松涛,田德智,等.混凝土坝温度应力实时反馈仿真系统研究[J].水力发电,2019,45(7):76-79,107.
[8] 柯玉伟,李斌,马镇炎.恒丰贵阳中心超长嵌固端楼板温度应力分析与设计[J].建筑结构,2019,49(3):52-56.
[9] 岳朝俊,段寅,李想,等.溢洪道控制段温度应力三维仿真分析——以卡洛特水电站为例[J].人民长江,2018,49(S2):173-175,234.
[10] 林建滨,黄巧,黄达海.碾压混凝土坝防渗面变态混凝土温度应力仿真[J].人民长江,2018,49(S1):229-234.
[11] 黄劲柏,蒋海英,潘崇仁.克孜河预应力渡槽工程顺槽向抗震减震技术方案研究[J].水利与建筑工程学报,2019,17(2):124-129.
[12] 谭鹏涛,周晶.海底悬跨管道在波流和地震联合作用时的模型试验研究[J].水利与建筑工程学报,2017,15(4):142-147.
[13] 李伟鸿,李桂元,盛东,等.大型矩形渡槽结构地震响应分析[J].湖南水利水电,2017(2):1-3.
[14] 陶涛,肖涛,王林森,等.海绵城市低影响开发设施多目标优化设计[J].同济大学学报 (自然科学版),2019,47(1):92-96.
[15] 武维维,叶林梅,邵晓东,等.基于多目标遗传算法的虚拟人作业姿态仿真[J].计算机集成制造系统,2019,25(1):155-164.
[16] 程明,陈照波,方宇娟,等.面向力学性能的并联隔振平台结构参数优化设计[J].振动工程学报,2019,32(1):1-9.