| 无砟轨道温度裂缝控制技术 |
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| 引用本文： | 刘华山.无砟轨道温度裂缝控制技术[J].国防交通工程与技术,2009,7(5):32-35. |
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| 作者姓名： | 刘华山 |
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| 作者单位： | 中铁十九局集团第一工程有限公司,辽宁辽阳,111000 |
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| 摘 要： | 针对道床板出现温度变形裂缝问题，分析其产生的原因，提出设计时适当配置结构钢筋，采用对水泥、粗骨料及外加剂等进行原材料控制，改进施工工艺和加强混凝土早期养护等措施控制裂缝产生，并介绍了开槽法、低压注浆法和表面覆盖法等适用于不同宽度裂缝的修补方法，最后提出今后应研究制定裂纹参数限值和优化伸缩缝的布置方式等相关建议。
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| 关 键 词： | 无砟轨道 道床板 裂缝 温度应力 配筋 修补 |
Control Techniques Against Temperature-caused Cracks in Non-ballast Tracks |
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| Liu Huashan.Control Techniques Against Temperature-caused Cracks in Non-ballast Tracks[J].Traffic Engineering and Technology for National Defence,2009,7(5):32-35. |
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| Authors: | Liu Huashan |
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| Institution: | Liu Huashan(First Engineering Co.Ltd.of the 19th Bureau Group of the Railway Building Corporation of China,Liaoyang 111000,China) |
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| Abstract: | In order to solve the problem of temperature-caused cracks in roadbed slabs,causes for the cracks are analyzed in the paper,with suggestions on the proper arrangement of structural reinforcement in the process of design,the control of raw materials such as cement,rough aggregate and additives,improving construction processes and strengthening the initial curing of concrete,put forward to limit the occurring of cracks.Other repair methods such as the slotting method,the low-pressure grouting method,and the s... |
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| Keywords: | non-ballast track roadbed slab crack temperature-caused stress reinforcement arrangement repair |
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