白鹤滩水电站大坝混凝土施工组织复杂,为了得到设计合理的混凝土生产系统布置方案,首先利用缆机事件驱动仿真时钟的方法来建立高拱坝施工仿真基本模型,然后根据双层供料规则进一步创建高拱坝双层供料施工仿真模型,对不同混凝土生产系统...白鹤滩水电站大坝混凝土施工组织复杂,为了得到设计合理的混凝土生产系统布置方案,首先利用缆机事件驱动仿真时钟的方法来建立高拱坝施工仿真基本模型,然后根据双层供料规则进一步创建高拱坝双层供料施工仿真模型,对不同混凝土生产系统布置方案下的白鹤滩大坝施工进度及强度进行了仿真分析。仿真结果表明:相比于高、低线分别布置3座和1座4×4.5 m 3拌和楼的“3+1”方案,高、低线均布置2座4×4.5 m 3拌和楼的“2+2”方案在总工期和关键节点工期进度方面均有一定超前,工期保证率更高,宜作为推荐方案;建议低线混凝土生产系统应尽量利用至2020年8月之后再拆除,以保证高温季节的混凝土施工进度与施工质量。工程实践表明:低线混凝土生产系统实际利用至2020年10月初才开始拆除,高、低线混凝土生产系统为白鹤滩大坝全部坝段于2021年5月31日提前浇筑到顶和按期蓄水发电提供了坚实的混凝土供应保障。展开更多
Research at home and abroad shows that the simulation of ground motion using the 3D finite-difference method might be accurate and feasible. Based on related theories and methods,and using the wave velocity and densit...Research at home and abroad shows that the simulation of ground motion using the 3D finite-difference method might be accurate and feasible. Based on related theories and methods,and using the wave velocity and density model of the crust in the Yanqing-Huailai Basin,this paper makes a simulation of ground motion at Guanting Reservoir Dam based on the scenario earthquake in the Yanqing-Huailai Basin. Comparative analysis shows that the results of 3D finite-difference simulation accord with those of the empirical formula. The parameters such as the velocity-time series of ground motion,PGV and frequency might be referred to for the analysis of seismic protection design of the dam's structure.展开更多
文摘白鹤滩水电站大坝混凝土施工组织复杂,为了得到设计合理的混凝土生产系统布置方案,首先利用缆机事件驱动仿真时钟的方法来建立高拱坝施工仿真基本模型,然后根据双层供料规则进一步创建高拱坝双层供料施工仿真模型,对不同混凝土生产系统布置方案下的白鹤滩大坝施工进度及强度进行了仿真分析。仿真结果表明:相比于高、低线分别布置3座和1座4×4.5 m 3拌和楼的“3+1”方案,高、低线均布置2座4×4.5 m 3拌和楼的“2+2”方案在总工期和关键节点工期进度方面均有一定超前,工期保证率更高,宜作为推荐方案;建议低线混凝土生产系统应尽量利用至2020年8月之后再拆除,以保证高温季节的混凝土施工进度与施工质量。工程实践表明:低线混凝土生产系统实际利用至2020年10月初才开始拆除,高、低线混凝土生产系统为白鹤滩大坝全部坝段于2021年5月31日提前浇筑到顶和按期蓄水发电提供了坚实的混凝土供应保障。
基金sponsored by the key lab.program of Shaanxi Province (08JZ04)the key discipline fund for scientific research program of Baoji University of Arts and Science (ZK0796)the key discipline fund for natural geography of Shaanxi Province in Baoji University of Arts and Science
文摘Research at home and abroad shows that the simulation of ground motion using the 3D finite-difference method might be accurate and feasible. Based on related theories and methods,and using the wave velocity and density model of the crust in the Yanqing-Huailai Basin,this paper makes a simulation of ground motion at Guanting Reservoir Dam based on the scenario earthquake in the Yanqing-Huailai Basin. Comparative analysis shows that the results of 3D finite-difference simulation accord with those of the empirical formula. The parameters such as the velocity-time series of ground motion,PGV and frequency might be referred to for the analysis of seismic protection design of the dam's structure.