曲线超高段聚氨酯固化道床施工工艺研究

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英文篇名：Study on Construction Procedure of Polyurethane Railway Track Bed in Section of Curve Superelevation 作者：楼梁伟 ; 叶晓宇 ; 蔡德钩 ; 郄录朝 ; 李书明 ; 姚建平 英文作者：LOU Liangwei;YE Xiaoyu;CAI Degou;QIE Luchao;LI Shuming;YAO Jianping;Railway Engineering Research Institute,China Academy of Railway Sciences Group Co.Ltd.;State Key Laboratory for Track Technology of High-speed Railway;Beijing Tieke Special Engineering Technological Development Corporation; 关键词：高速铁路 ; 聚氨酯固化道床 ; 试验研究 ; 曲线超高段 ; 施工工艺 英文关键词：High Speed railway;;Polyurethane railway track bed;;Experimental study;;Section of curve superelevation;;Construction technology 中文刊名：TDJZ 英文刊名：Railway Engineering 机构：中国铁道科学研究院集团有限公司铁道建筑研究所;高速铁路轨道技术国家重点实验室;北京铁科特种工程技术开发公司; 出版日期：2019-01-20 出版单位：铁道建筑 年：2019 期：v.59;No.539 基金：中国铁道科学研究院基金(2017YJ042) 语种：中文; 页：TDJZ201901022 页数：4 CN：01 ISSN：11-2027/U 分类号：99-102

摘要

以济青(济南—青岛)高速铁路为依托,针对曲线超高段聚氨酯固化道床的工程应用,总结其施工工艺。结果表明:曲线超高段聚氨酯固化道床施工工艺与正线基本一致;聚氨酯材料起发时间应控制在14～15 s;曲线超高段聚氨酯固化施工后,轨面高程普遍呈下降趋势,其变形值一般小于2 mm,但内轨侧变形一般大于外轨侧,差值约1 mm。研究结果可为今后类似工程提供参考。
        The engineering background is the application of polyurethane railway track bed in section of curve superelevation in Jiqing high speed railway. The construction procedure is introduced. The results showthat the construction of the polyurethane railway track bed in section of curve superelevation is the same as that in main line.The rise time of polyurethane shall be controlled within 14 through 15 seconds. After the set of polyurethane in section of curve superelevation,the track elevation generally becomes lower and the decline value is less than 2 mm.The deformation at the inner track is greater than that at the outer track,and the difference is about 1 mm. The research results may be applied to the similar engineering.

引文

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