摘要
Abstract
The bottom slab and cylindrical structures of a multi-cell cylindrical pumping station have a distinctive arrangement,and the restraint imposed by the rock foundation is substantial.The characteristics and development patterns of the temperature and stress fields in this type of mass concrete structure during construction remain unclear,and few reference materials are available.Based on a large multi-cell cylindrical pumping station founded on bedrock in southwestern China,temperature-control simulations of the pumping-station concrete were conducted using the finite element method during the corresponding construction period and according to the structural lift and block divisions.The distribution patterns and magnitudes of the temperature and stress fields in the mass concrete of the pumping station under different conditions were investigated in depth.Based on the calculation results and engineering experience,relatively optimal temperature-control criteria and temperature-control and crack-prevention measures were proposed,providing a reference for temperature control and crack prevention in similar projects.关键词
圆筒形泵站/大体积混凝土/温控仿真分析/温控标准/防裂措施Key words
Cylindrical pumping station/mass concrete/temperature-control simulation analysis/temperature-control criteria/crack-prevention measures分类
建筑与水利
