| 大跨径刚构桥0~#块腹板非荷载裂缝成因分析 |
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| 引用本文： | 李春旗,陈静曦,郝天之.大跨径刚构桥0~#块腹板非荷载裂缝成因分析[J].山东交通学院学报,2009,17(1). |
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| 作者姓名： | 李春旗 陈静曦 郝天之 |
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| 作者单位： | 1. 武汉理工大学,交通学院,湖北,武汉,430063
2. 广西交通科学研究院,广西,南宁,530084;广西大学,土木建筑工程学院,广西,南宁,530004 |
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| 摘 要： | 对大跨径刚构桥0#块腹板在施工期间出现非荷载裂缝的原因进行了调查,并通过对埋置在0#块腹板内的钢弦应变计和温度传感器监测的混凝土硬化过程中应变和温度数据的结果分析,证实0#块腹板出现的裂缝主要是由收缩和水化热温度应力造成的.
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| 关 键 词： | 裂缝 收缩 温度应力 分析 |
Non-Load Crack Factors Analysis in 0~# Segment Web of the Rigid Frame Long-Span Bridge |
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| LI Chun-qi,CHEN Jing-xi,HAO Tian-zhi.Non-Load Crack Factors Analysis in 0~# Segment Web of the Rigid Frame Long-Span Bridge[J].JOURNAL OF SHANDONG JIAOTONG UNIVERSITY,2009,17(1). |
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| Authors: | LI Chun-qi CHEN Jing-xi HAO Tian-zhi |
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| Institution: | 1.School of Transportation;Wuhan University of Technology;Wuhan 430063;China;2.Guangxi Academy of Communications Science;Nanning 530084;3.College of Civil Engineering and Architecture;Guangxi University;Nanning 530004;China |
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| Abstract: | Non-load cracks appeared on the web of 0# segment when a rigid frame long-span bridge was under the construction,where crack disease investigation was carried through with steel wire strain gauge and temperature sensor pre-embedded in the web,so data of stress and temperature were collected during in concrete hardening process.It is testified that the temperature stress caused by hydration heat and shrinkage is the main factor resulting in non-load cracks appearing on the web of 0# segment. |
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| Keywords: | crack shrinkage temperature stress analysis |
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