| 鄂东长江公路大桥南塔承台大体积混凝土温度裂缝控制技术 |
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| 引用本文： | 卢勇,冯仲仁. 鄂东长江公路大桥南塔承台大体积混凝土温度裂缝控制技术[J]. 国外建材科技, 2009, 30(5): 37-40 |
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| 作者姓名： | 卢勇 冯仲仁 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,武汉,430070;中交第二航务工程局第五工程分公司,武汉,430012
2. 武汉理工大学土木工程与建筑学院,武汉,430070 |
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| 摘 要： | 介绍了鄂东长江公路大桥南塔承台大体积混凝土夏季施工过程中裂缝控制措施，即在仿真计算的基础上，优化配合比，控制水泥出库温度，加冰拌和混凝土，及早通冷却水和现场温度监控等。从施工现场情况来，承台混凝土未出现温度裂缝。
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| 关 键 词： | 大体积混凝土 温度控制 绝热温升 冷却水 |
Thermal Cracking Control Technology of the Mass Concrete of Pile Cap in South Main Tower of E-dong Yangtze River Bridge |
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| LU Yong,FENG Zhong-ren. Thermal Cracking Control Technology of the Mass Concrete of Pile Cap in South Main Tower of E-dong Yangtze River Bridge[J]. Science and Technology of Overseas Building Materials, 2009, 30(5): 37-40 |
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| Authors: | LU Yong FENG Zhong-ren |
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| Affiliation: | LU Yong1,2,FENG Zhong-ren1(1.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China,2.The 5th Construction Company of CCCC Second Harbor Engineering Co.Ltd,Wuhan 430012,China) |
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| Abstract: | On the basis of the simulation and calculation of thermal stresses,systematical temperature control measures were adopted to avoid thermal cracking during the construction of pile cap in south main tower of E-dong Yangtze River bridge,such as the optimization of mix proportion,the control of initial cement temperature,the concrete mixing with ice pieces,the early circulation of cooling water and the temperature monitoring in site.The results showed that the thermal cracking in practice may be efficiently pr... |
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| Keywords: | mass concrete temperature control adiabatic rise of temperature cooling water |
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