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某承台采用C40等级混凝土,水化热效应显著,且于冬季浇筑实施,养护周期长,可能面临寒流等各种不利气候影响,抗裂控制难度大。为避免开裂影响结构耐久性,本文提出主动温控的概念,通过基于实测、模型修正的方法对未来发展趋势进行预判,检验结构安全度的同时,现场能够提前采取措施,使温控达到预期目的,有效的避免了裂缝的产生,为同类工程的控制有一定的参考意义。
A C40 grade concrete platform bearing a significant hydration heat effect, and in the winter pouring implementation, long curing cycle, may face cold and other adverse weather effects, crack control difficult. In order to avoid the influence of cracking on the durability of the structure, this paper proposes the concept of active temperature control. By predicting the future development trend based on the actual measurement and the model correction, the safety of the structure can be tested and the site can take measures in advance to achieve the desired temperature control The purpose of effectively avoiding the occurrence of cracks for the control of similar projects have some reference value.