大型振动台基础大体积混凝土防止裂缝产生的质量控制措施
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摘要
介绍和论述了西安建筑科技大学新校区结构实验室大型模拟振动台基础大体积混凝土施工技术,为了有效控制大体积混凝土施工时出现温度变形和开裂问题,按照配合比设计采取低水化热水泥、级配良好的砂石和合理的掺合料等严格控制好原材料的使用,施工时采用有效合理的混凝土浇筑施工工艺、方法和后期测温保温养护等技术质量控制措施,确保了基础工程的质量安全,未出现温度变形裂缝,实际工程应用证明,这些防止裂缝措施是非常有效的.
This paper introduces the construction technology of mass concrete foundation of large scale shaking table in Laboratory of Structure Engineering on the new campus of Xi'an University of Architecture and Technology.In order to effectively control the temperature deformation and cracks in mass concrete construction,according to the mix proportion design,using low hydration heat cement,well-graded aggregate and proper admixture can strictly control the use of raw materials.Technical quality control measures,such effective and reasonable construction technology and method as concrete pouring,temperature measure,insulation,and concrete curing in later period,can ensure the quality and safety of foundation works.As a result,temperature deformation cracks no longer appear.It has been proved by practice that these measures of preventing cracks are effective.
This paper introduces the construction technology of mass concrete foundation of large scale shaking table in Laboratory of Structure Engineering on the new campus of Xi'an University of Architecture and Technology.In order to effectively control the temperature deformation and cracks in mass concrete construction,according to the mix proportion design,using low hydration heat cement,well-graded aggregate and proper admixture can strictly control the use of raw materials.Technical quality control measures,such effective and reasonable construction technology and method as concrete pouring,temperature measure,insulation,and concrete curing in later period,can ensure the quality and safety of foundation works.As a result,temperature deformation cracks no longer appear.It has been proved by practice that these measures of preventing cracks are effective.
引文
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[4]GB50496-2009大体积混凝土施工规范[S].北京:中国计划出版社,2009:22-27.GB50496-2009Code for construction of mass concrete[S].Beijing:China Planning Press,2009:22-27.
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[6]王小龙,魏小强.浅谈混凝土裂缝的产生及防治[J].陕西建筑,2009(6):34-35.WANG Xiao-long,WEI Xiao-qiang.Concrete crack and its prevention[J].Shaanxi Architecture,2009(6):34-35.
[7]张自平,程绍革,贺军.大型模拟地震振动台大体积混凝土基础施工裂缝控制[J].施工技术,2001(4):28-29.ZHANG Zi-ping,CHENG Shao-ge,HE Jun.Crack control of mass concrete foundation of large scale shaking table[J].Construction Technology,2001(4):28-29.
[2]王万森,倪伟成.大体积混凝土施工方案[J].陕西建筑,2009(4):39-41.WANG Wan-sen,NI Wei-cheng.Technique for the mass Concrete construction[J].Shaanxi Architecture,2009(4):39-41.
[3]周舒,曹庆.大体积混凝土施工技术[J].施工技术,2008(4):104-105.ZHOU Shu,CAO Qing.Construction technology of massive concrete[J].Construction Technology,2008(4):104-105.
[4]GB50496-2009大体积混凝土施工规范[S].北京:中国计划出版社,2009:22-27.GB50496-2009Code for construction of mass concrete[S].Beijing:China Planning Press,2009:22-27.
[5]汪正荣.建筑施工工程师手册[M].北京:中国建筑工业出版社,2009:496-497.WANG Zheng-rong.Construction engineer manual[M].Beijing:China Architecture and Building Press,2009:496-497.
[6]王小龙,魏小强.浅谈混凝土裂缝的产生及防治[J].陕西建筑,2009(6):34-35.WANG Xiao-long,WEI Xiao-qiang.Concrete crack and its prevention[J].Shaanxi Architecture,2009(6):34-35.
[7]张自平,程绍革,贺军.大型模拟地震振动台大体积混凝土基础施工裂缝控制[J].施工技术,2001(4):28-29.ZHANG Zi-ping,CHENG Shao-ge,HE Jun.Crack control of mass concrete foundation of large scale shaking table[J].Construction Technology,2001(4):28-29.
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