摘要
Abstract
Aiming at the problem of temperature crack control in the construction of building structure raft foundation,this paper takes a commercial complex project in Guiyang City as an example to systematically study the synergistic mechanism of multi-layer steel reinforcement support system and circulating water cooling technology,and relies on MIDAS FEA simulation and measurement to analyze the law of concrete temperature change.Practice shows that the pipe network system with Φ48 mm×3.5 mm fastening-type steel pipe support and cooling water circulation can reduce the maximum internal temperature of concrete by 11℃,and the cooling rate is controlled within 2℃/d,which effectively reduces the probability of temperature cracks.The results show that the pipe network system with steel pipe support and cooling water circulation is effective and feasible as the raft mass concrete multi-layer reinforcement support and cooling measures.关键词
筏板基础/大体积混凝土/多层钢筋支撑/循环水降温/温度应力Key words
Raft foundation/Mass concrete/Multi-layer reinforcement support/Circulating water cooling/Temperature stress分类
建筑与水利
