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拱坝不同设计坝高方案的地震动响应比较研究
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作者 郭嘉晖 李静 +2 位作者 石立 徐强 陈坤强 《水电能源科学》 北大核心 2023年第8期105-108,共4页
在同一坝址下进行水电枢纽建设,挡水构筑物的高度是一个受众多因素影响的关键指标。从挡水大坝地震动响应变化的角度,对某工程挡水构筑物三种设计坝高方案在静动力叠加工况下的响应进行了分析比较。结果表明,随着坝体的增高,拱坝的自重... 在同一坝址下进行水电枢纽建设,挡水构筑物的高度是一个受众多因素影响的关键指标。从挡水大坝地震动响应变化的角度,对某工程挡水构筑物三种设计坝高方案在静动力叠加工况下的响应进行了分析比较。结果表明,随着坝体的增高,拱坝的自重和库水压力不断增大,但其地震动响应并非都随坝体的增高而增大,算例中拱坝上游面梁向和拱向压应力随着坝体的增高而增大,下游面梁向压应力随着坝体的增高而减小,拱向压应力随坝体的增高呈先减后增的趋势,正向位移和开度则随着坝体的增高呈先增后减的趋势。该研究结果可为挡水构筑物的相关设计提供参考。 展开更多
关键词 混凝土拱坝 地震 有限元模拟 响应规律 坝体高度
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Real-Time Temperature Control for High Arch Dam Based on Decision Support System 被引量:4
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作者 井向阳 刘杏红 +1 位作者 周伟 常晓林 《Transactions of Tianjin University》 EI CAS 2014年第2期118-125,共8页
It is important and difficult to control the temperature of mass concrete structure during high arch dam construction.A new method with decision support system is presented for temperature control and crack prevention... It is important and difficult to control the temperature of mass concrete structure during high arch dam construction.A new method with decision support system is presented for temperature control and crack prevention.It is a database system with functions of data storage,information inquiry,data analysis,early warning and resource sharing.Monitoring information during construction can be digitized via this system,and the intelligent analysis and dynamic control of concrete temperature can be conducted.This method has been applied in the construction of the Dagangshan Arch Dam in China and has proven to be very convenient.Based on the decision support of this system and the dynamic adjustment of construction measures,the concrete temperature of this project is well-controlled. 展开更多
关键词 concrete arch dam temperature control decision support system pipe cooling MONITORING
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