重载铁路水冲受损桥墩组合加固技术

doi:10.16265/j.cnki.issn1003-3033.2020.01.007

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (1): 42-47.doi: 10.16265/j.cnki.issn1003-3033.2020.01.007

重载铁路水冲受损桥墩组合加固技术

陈树礼¹ 副教授, 柳墩利² 高级工程师, 田波³ 高级工程师, 许宏伟¹ 讲师

1.石家庄铁道大学大型结构健康诊断与控制研究所,河北石家庄 050043;
2.国家铁路局工程质量监督中心,北京 100891;
3.中铁西安勘察设计研究院有限责任公司,陕西西安 710054

收稿日期:2019-10-28 修回日期:2019-12-26 出版日期:2020-01-28
作者简介:陈树礼 (1978—),男,河北沧州人,博士研究生,副教授,主要从事桥梁检测、评定与加固和桥梁结构健康监测等方面的研究E-mail:chensl@stdu.edu.cn
基金资助:
国家重点研发计划重点专项(2016YFC0802206);国家自然科学基金面上项目资助(51678376)。

Combined reinforcement technology for water scour damaged piers of heavy-haul railway

CHEN Shuli¹, LIU Dunli², TIAN Bo³, XU Hongwei¹

1. Structure Health Monitoring and Control Institute, Shijiazhuang Tiedao University, Shijiazhuang Hebei 050043, China;
2. Quality Supervision Center, National Railway Administration of the P. R. C, Beijing 100891, China;
3. Xi'an Railway Survey and Design Institute Co,. Ltd., Xi'an Shaanxi 710054, China

Received:2019-10-28 Revised:2019-12-26 Published:2020-01-28

摘要/Abstract

摘要： 为解决冲刷引起的桥梁墩台基础受损,进而引起承载能力降低并危及运营安全的问题,以某重载铁路桥墩洪水冲刷病害为工程背景,采用理论分析和现场试验相结合的方法,提出一套考虑墩身和基础共同加固的增补桩基法+基础加固法的组合技术方法,制定分步实施方案,并应用在实际工程中。结果表明:加固后,单桩承载力、墩顶位移和桩侧土压力等静力指标明显改善,桥墩和桥跨结构横向振动幅值较加固前显著降低,桥墩横向自振频率增大5倍,墩台基础刚度和承载能力显著提高。

关键词: 重载铁路, 受损桥墩, 组合加固, 检算, 现场试验

Abstract: In order to prevent destruction of pier foundation caused by flood scouring which will further affect bearing capacity and operation safety, a set of technical method combining supplementary pile foundation and foundation reinforcement method was proposed based on theoretical analysis and field test of flood scour disease of a heavy load railway pier. Then, a step-by-step implementation plan was drafted and applied in practical projects. The results show that static indexes, such as bearing capacity of single pile, displacement of pier top and earth pressure at pile side, are improved obviously after reinforcement, transverse vibration amplitude of bridge pier and span structure is markedly lower, and lateral vibration frequency of pier increases 5 times. Foundation stiffness and bearing capacity of pier and abutment are improved significantly.

Key words: heavy-haul railway, damaged pier, combined reinforcement, calculation, field test

中图分类号:

X948

陈树礼, 柳墩利, 田波, 许宏伟. 重载铁路水冲受损桥墩组合加固技术[J]. 中国安全科学学报, 2020, 30(1): 42-47.

CHEN Shuli, LIU Dunli, TIAN Bo, XU Hongwei. Combined reinforcement technology for water scour damaged piers of heavy-haul railway[J]. China Safety Science Journal, 2020, 30(1): 42-47.

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重载铁路水冲受损桥墩组合加固技术

Combined reinforcement technology for water scour damaged piers of heavy-haul railway

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