沿海地区桥梁超大零号块裂缝控制技术_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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沿海地区桥梁超大零号块裂缝控制技术

Cracks Controlling Technology of Ultra Large Zero Block for Bridge in Coastal Area

２０17年第4期

沿海地区；超大零号块；裂缝控制

Coastal area; Ultra large zero Block; Cracks Controlling

２０17年第4期

1000-4637（2017）04-85-03

房艳伟1，张炼国2，刘可心1，吴柯1

1.中交武汉港湾工程设计研究院有限公司，武汉430040； 2.中交第二航务工程局有限公司，武汉430040

房艳伟1，张炼国2，刘可心1，吴柯1

房艳伟,张炼国,刘可心,等.沿海地区桥梁超大零号块裂缝控制技术[J].混凝土与水泥制品,2017(4):85-87.

FANG Y W, ZHANG L G, LIU K X,et al.Cracks Controlling Technology of Ultra Large Zero Block for Bridge in Coastal Area[J].China Concrete and Cement Products,2017(4):85-87.

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摘要：某大桥主墩零号块结构尺寸大，采用C55混凝土，收缩大，施工过程中处理不当极易出现裂缝，在混凝土配合比优化设计的基础上，依据温度场及温度应力场仿真计算结果制定了相应的温控标准，并通过原材料温度控制、混凝土掺加碎冰拌和、液氮预冷混凝土、埋设冷却水管通水冷却等措施，使该零号块箱梁未出现有害温度裂缝，达到了预期的温度控制效果。 Abstract：Due to the large structure size of zero block of some river bridge, the concrete is easy to crack in construction when using C55, based on the optimization of concrete mix proportion, the standard of temperature controlling was made according to the result of temperature and thermal stresses distribution of mass concrete. By controlling materials temperature, mixing concrete with ice, cooling concrete with liquefied nitrogen and applying recycling cool water, harmful cracks was not appeared in mass concrete of ultra large zero block of the river bridge and anticipated temperature control requirements was achieved.

英文名 : Cracks Controlling Technology of Ultra Large Zero Block for Bridge in Coastal Area

刊期 : ２０17年第4期

关键词 : 沿海地区；超大零号块；裂缝控制

Key words : Coastal area; Ultra large zero Block; Cracks Controlling

刊期 : ２０17年第4期

DOI :

文章编号 : 1000-4637（2017）04-85-03

基金项目 :

作者 : 房艳伟1，张炼国2，刘可心1，吴柯1

单位 : 1.中交武汉港湾工程设计研究院有限公司，武汉430040； 2.中交第二航务工程局有限公司，武汉430040

房艳伟1，张炼国2，刘可心1，吴柯1

房艳伟,张炼国,刘可心,等.沿海地区桥梁超大零号块裂缝控制技术[J].混凝土与水泥制品,2017(4):85-87.

FANG Y W, ZHANG L G, LIU K X,et al.Cracks Controlling Technology of Ultra Large Zero Block for Bridge in Coastal Area[J].China Concrete and Cement Products,2017(4):85-87.

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引用本文

Abstract：Due to the large structure size of zero block of some river bridge, the concrete is easy to crack in construction when using C55, based on the optimization of concrete mix proportion, the standard of temperature controlling was made according to the result of temperature and thermal stresses distribution of mass concrete. By controlling materials temperature, mixing concrete with ice, cooling concrete with liquefied nitrogen and applying recycling cool water, harmful cracks was not appeared in mass concrete of ultra large zero block of the river bridge and anticipated temperature control requirements was achieved.

关键词:

沿海地区；超大零号块；裂缝控制

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