| 铁路沥青混凝土温度离析控制技术研究 |
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| 引用本文： | 石越峰,蔡德钩,楼梁伟,姚建平,许俊磊,张世杰.铁路沥青混凝土温度离析控制技术研究[J].铁道建筑,2019(1):67-70,80. |
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| 作者姓名： | 石越峰 蔡德钩 楼梁伟 姚建平 许俊磊 张世杰 |
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| 作者单位： | 中国铁道科学研究院集团有限公司铁道建筑研究所;北京铁科特种工程技术开发公司;京张城际铁路有限公司;中铁工程设计咨询集团有限公司 |
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| 基金项目： | 中国铁路总公司科技研究开发计划(2017G008-B) |
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| 摘 要： | 依托京张(北京—张家口)城际铁路全断面沥青混凝土防水封闭结构的施工,针对沥青混凝土在施工各阶段产生的温度离析现象,介绍了沥青混凝土的施工工艺及其温度控制要求。通过对现场实测数据的分析,得出了沥青混凝土施工过程中的降温规律并分析了造成沥青混凝土温度离析的原因,在此基础上从沥青混凝土的拌和、运输、摊铺、压实等方面提出了控制温度离析的合理化建议。
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| 关 键 词： | 铁路 路基 沥青混凝土 温度离析 控制技术 施工工艺 |
Control Technology of Temperature-induced Segregation of Asphalt Concrete in Railway Project |
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| SHI Yuefeng,CAI Degou,LOU Liangwei,YAO Jianping,XU Junlei,ZHANG Shijie.Control Technology of Temperature-induced Segregation of Asphalt Concrete in Railway Project[J].Railway Engineering,2019(1):67-70,80. |
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| Authors: | SHI Yuefeng CAI Degou LOU Liangwei YAO Jianping XU Junlei ZHANG Shijie |
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| Affiliation: | (Railway Engineering Research Institute,China Academy of Railway Sciences Group Co. Ltd.,Beijing 100081,China;Beijing Tieke Special Engineering Technological Development Corporation,Beijing 100081,China;Beijing-Zhangjiakou Intercity Railway Co.Ltd., Beijing 100070,China;China Railway Engineering Design & Consultant Group Co.Ltd.,Beijing 100055,China) |
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| Abstract: | The engineering background is the construction of the full cross-section asphalt concrete waterproof sealing structure in Beijing-Zhangjiakou intercity railway.The focus of the research is temperature-induced segregation at different stages during construction of asphalt concrete.The construction technology and the requirement of temperature control are introduced.Based on the analysis of the measuring in-situ data,the temperature decreasing pattern during construction is studied as well as the causes of the temperature-induced segregation of asphalt concrete.Also,how to control temperature-induced segregation appropriately is suggested from the aspects of mixing,transportation,spreading and compaction of asphalt concrete. |
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| Keywords: | Railway Subgrade Asphalt concrete Temperature segregation Control technology Construction technology |
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