Research on Key Problems of Seismic Design of Soft Foundation of Large Pumping Station

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Zhang, Liaojun^1 ; Yajun, Chen^2

College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing

210098, China^1

Xuzhou Design Institute of Water Conservancy and Architecture, Xuzhou, Jiangsu

221000, China^2

关键词: Contact non linearities;    Different structure;    Foundation reinforcement;    Integrated designs;    Large pumping stations;    Seismic Performance;    Strong earthquakes;    Suining pumping stations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/3/032020/pdf
DOI  :  10.1088/1755-1315/233/3/032020

来源: IOP

【 摘 要 】

Based on the large-scale pumping station project of Suining Second Station, the seismic design theory of large-scale pumping stations on soft foundation is studied in this paper. A 3D fluid-structure interaction simulation model of pumping station- foundation- water is established. It can simulate the soil dynamic characteristics of the foundation and the contact nonlinearity of the opening and closing between different structures during strong earthquakes. A semi - underground structure integrated design scheme is finally proposed in this paper: the steel plates pressed together are used to connect the pumping station body, the maintenance room and the control room. The scheme with a combination of the underground continuous wall, bolts and bored piles for foundation reinforcement is proposed. And then a similar semi - underground structure is constituted. It turns out the design scheme has greatly improved the seismic performance of the Suining Pumping Station and solved the key technical problems of the seismic design of large pumping stations on soft foundation.