| 秦沈客运专线箱梁水化热温度、应变变化及裂缝控制 |
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| 引用本文： | 雷家艳,季文玉,卢文良. 秦沈客运专线箱梁水化热温度、应变变化及裂缝控制[J]. 北京交通大学学报(自然科学版), 2002, 26(1): 85-87,92. DOI: 10.3969/j.issn.1673-0291.2002.01.019 |
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| 作者姓名： | 雷家艳 季文玉 卢文良 |
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| 作者单位： | 北方交通大学,土木建筑工程学院,北京,100044 |
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| 基金项目： | 铁道部科技基础资助项目;2000G48-C; |
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| 摘 要： | 通过实验数据,总结了铁路32 m双线单箱单室混凝土箱梁横截面上水化热温度和应变随时间的变化规律,分析了温差裂缝和温度收缩裂缝的产生机理,对此类箱梁早期温度裂缝的有效控制提出了合理的建议.
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| 关 键 词： | 箱梁 水化热 温度梯度 应变 裂缝控制 |
| 文章编号： | 1000-1506(2002)01-0085-03 |
| 修稿时间： | 2001-10-22 |
Temperature, Strain and Cracks Control During the Hydration Process of Concrete Box Girder on Qin_Shen Special Railway |
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| LEI Jia_yan,JI Wen_yu,LU Wen_liang. Temperature, Strain and Cracks Control During the Hydration Process of Concrete Box Girder on Qin_Shen Special Railway[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2002, 26(1): 85-87,92. DOI: 10.3969/j.issn.1673-0291.2002.01.019 |
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| Authors: | LEI Jia_yan JI Wen_yu LU Wen_liang |
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| Abstract: | The temperature and strain on the cross_section of double_line railway box girder are changing during the whole hydration process. Their patterns are studied on the base of experimental information. According to the cause of hydration cracks, effective control methods are presented for this kind of box girder, which consists of single_box and single_room. |
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| Keywords: | box girder hydration heat temperature difference strain cracking control |
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