| 悬索桥锚碇大体积混凝土温度控制与施工 |
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| 引用本文： | 汪峰,刘沐宇.悬索桥锚碇大体积混凝土温度控制与施工[J].三峡大学学报(自然科学版),2013,35(2):61-64. |
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| 作者姓名： | 汪峰 刘沐宇 |
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| 作者单位： | 1. 三峡大学土木与建筑学院,湖北宜昌,443002
2. 武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉,430070 |
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| 摘 要： | 黄埔大桥南锚锭底板C30混凝土方量近16847m2，在取消设置冷却水管通水冷却情况下，通过选择级配优良的碎石、砂、外加剂，掺入矿粉和粉煤灰优化混凝土配合比，控制混凝土的浇筑过程和保温养护，减小水泥用量，降低混凝土的水化温升峰值，提高了混凝土和易性和耐久性．现场实时温度监测表明：锚锭底板未出现温度裂缝，底板最高温度峰值为58．0℃，内表最大温差24．3℃小于规范值25℃，满足工程设计要求．
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| 关 键 词： | 悬索桥 大体积混凝土 混凝土配合比 温度控制 锚锭底板 |
Temperature Control and Construction of Anchor Mass Concrete in Cable Suspension Bridge |
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| Wang Feng
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Liu Muyu.Temperature Control and Construction of Anchor Mass Concrete in Cable Suspension Bridge[J].Journal of China Three Gorges University(Natural Sciences),2013,35(2):61-64. |
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| Authors: | Wang Feng Liu Muyu |
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| Institution: | 1.College of Civil Engineering & Architecture,China Three Gorges Univ.,Yichang 443002,China;2.Hubei Key Laboratory of Roadway,Bridge & Structure Engineering,Wuhan Univ.of Technology,Wuhan 430070,China) |
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| Abstract: | During mass concrete construction of anchors in cable suspension bridge, in order to eliminate tem- perature cracking in concrele, the optimization of concrete mix proportion, reduction of cement quantity,in- crease of mineral aggregate quantity, drop in concrete hydration temperature rise, improvement of pumping construction performance and durability, etc. measures are adopted. The max temperature of anchor floor is 58.0℃; and the max temperature difference of 24.3℃ is less than standard value 25℃. Therefore, the design requirements are satisfied. |
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| Keywords: | cable suspension bridge mass concrete concrete mix proportion temperature control anchor floor |
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