超厚大体积混凝土底板跳仓法施工的模拟分析

Simulation Analysis on Sequence Method Construction of Ultra-Thick Mass Concrete Slab

大体积混凝土底板在浇筑和养护期间水化热巨大,易引起内部温度场分布不均匀,从而导致温度裂缝的产生,影响结构的正常使用。为此,结合郑州市奥林匹克体育中心项目采用的跳仓法施工技术,利用Midas软件对大体积混凝土水化热温度场进行模拟计算,并对超厚底板跳仓法施工进行分析,验证了其可行性。

The hydration heat of mass concrete floor during the pouring and curing is huge which may cause uneven distribution of internal temperature field, lead to the occurrence of temperature cracks and affect the normal use of the structure. To this end, combined with the sequence method construction technology adopted by the Zhengzhou Olympic Sports Center project, the Midas software are used to conduct simulated calculation of the hydration heat temperature field of mass concrete and to analyze the feasibility of sequence method construction of ultra-thick slab.