大体积混凝土筏板基础的温度应力控制

!Control of Temperature Stress about the Mass Concrete of the Raft Foundation

应用关于温度变化和混凝土收缩引起的混凝土结构裂缝控制理论,对2.2m厚的大体积混凝土筏板基础进行了温度应力控制的计算,为筏板基础的顺利施工提供了理论依据。采用的混凝土表面贮水蓄热保温保湿养护措施,是保证筏基大体积混凝土施工质量的关键。

This paper calculates temperature stress about the 2.2m thick mass concrete of the raft foundation with the theory about crack-control in concrete structure caused by drying shrinkage and temperature difference of atmosphere. which found the theoretical basis for the construction of the raft foundation. Preserve temperature and wet maintenance methods,usage of ＂water-stored the surface of the concrete＂, is applied to protect the key to construction quality of mass concrete of the raft foundation.