某高层建筑筏板基础混凝土裂缝控制分析

Analysis of crack control of raft foundation concrete in a high building

从施工技术方案、温度控制、抗裂分析及验算等方面介绍了某高层建筑筏板基础大体积混凝土裂缝控制的技术措施。对该高层筏板基础混凝土温度与温度应力的变化对裂缝控制的实际作用效果进行了分析,总结了筏板基础大体积混凝土内部温度变化的基本规律,为筏板基础的设计和施工提供参考。

Techniques of crack resistance for raft foundation concrete were discussed in the thesis from the aspects of construction technical plan, temperature control, crack resistance analysis and checking computations. The practical effect of temperature/thermal stress change in the raft foundation of a highrise building on the control of crack in the foundation was analyzed. Basic laws of inner temperature changes of mass raft foundation concrete were summarized in order to provide theoretical support and practical guidance for the design and construction of raft foundation.