超长混凝土结构温差收缩效应分析及设计实践
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（1陕西省建筑设计研究院有限责任公司，西安 710003；2 宁夏青龙管业股份有限公司，青铜峡 751601 ）[摘要] 结合工程实际，介绍超长混凝土结构考虑混凝土收缩、裂缝、徐变等因素的温差计算方法。通过对计算结果进行分析，提出针对混凝土塑性材料特点，应综合考虑应力和变形采用合理的构造措施。通过这些方法和措施，能有效减少混凝土结构中温差造成的影响。[关键词] 超长混凝土结构;温差;收缩;徐变;刚度折减中图分类号：TU375 文献标识码：A 文章编号：1002-848X(2013)S1-0666-03Analysis and engineering practice of temperature variation and shrinkage effects on super-long concrete structuresZhou Jian1，Liu Yang1，Miao Aimei1，Liu Yu2（1Shannxi Architectural Design and Research Institute Co., Ltd., Xi’an 710003,China；2 Ningxia Qinglong Pipes Industry Co., Ltd., Qingtongxia 751601,China）Abstract：Combined with an engineering project, a temperature variation computing method was presented in design of over-long concrete structures, which took the concrete shrinkage, cracking and creep into account. The paper come up with the characteristics of the plastic material of concrete by analyzing calculation results, the stress and strain must be taken into account comprehensively adopting reasonable construction measures. All these methods and measures can effectively reduce the impact of temperature variation in concrete structures。Keywords：super-long concrete structures; temperature variation; shrinkage; creep; stiffness reduction作者简介：周剑，硕士，工程师，Email：277144410@qq.com。
