超長混凝土結(jié)構(gòu)溫差收縮效應(yīng)分析及設(shè)計實踐
周劍1，劉洋1，苗愛梅1，劉煜2
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（1陜西省建筑設(shè)計研究院有限責(zé)任公司，西安 710003；2 寧夏青龍管業(yè)股份有限公司，青銅峽 751601 ）[摘要] 結(jié)合工程實際，介紹超長混凝土結(jié)構(gòu)考慮混凝土收縮、裂縫、徐變等因素的溫差計算方法。通過對計算結(jié)果進行分析，提出針對混凝土塑性材料特點，應(yīng)綜合考慮應(yīng)力和變形采用合理的構(gòu)造措施。通過這些方法和措施，能有效減少混凝土結(jié)構(gòu)中溫差造成的影響。[關(guān)鍵詞] 超長混凝土結(jié)構(gòu);溫差;收縮;徐變;剛度折減中圖分類號：TU375 文獻標(biāo)識碼：A 文章編號：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作者簡介：周劍，碩士，工程師，Email：277144410@qq.com。
