不同环境温度下混凝土箱梁的温度分布及演化规律

发布时间：2018-02-24 20:33

  本文关键词： 环境温度 混凝土箱梁 温度监测 温度裂缝 演化规律　出处：《硅酸盐通报》2017年10期 　论文类型：期刊论文

【摘要】：通过考虑不同地域、季节、温度时段大体积混凝土内外温差、表面与环境温差,探讨了32 m单箱单室预应力混凝土箱梁的温度场分布的变化以及两类温差的变化规律,采用midas软件模拟了环境温度变化在混凝土箱梁中产生的效应,初步探明了当环境发生较大变化时两类温差的演变特性。研究结果表明,当昼夜温差大于10℃时,混凝土内外温差、表面与环境温差可发生较显著的变化。根据模拟结果,设计了基于环境条件变化特征的温度测点设置方案,揭示了不同环境下混凝土箱梁的温度场分布及演化规律。
[Abstract]:Considering different regions, seasons, temperature periods, internal and external temperature difference of mass concrete, surface and environment temperature difference, the variation of temperature field distribution of 32 m single box single chamber prestressed concrete box girder and the variation law of two kinds of temperature difference are discussed. The effect of ambient temperature change on concrete box girder is simulated by midas software, and the evolution characteristics of two kinds of temperature difference are preliminarily investigated when the environment changes greatly. The results show that when the temperature difference between day and night is greater than 10 鈩，

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