院报 ›› 2018, Vol. 35 ›› Issue (6): 98-101,106.DOI: 10.11988/ckyyb.20180238

• 岩土工程 • 上一篇    下一篇

码头堆场地基强夯加固对邻近铁路桥振动影响的研究

丁圣辉1,丁淑平2a,张明强2b   

  1. 1.湖北工程学院 土木工程学院,湖北 孝感 432000;
    2.长江勘测规划设计研究院 a.长江岩土工程总公司;b.市政与交通院,武汉 430010
  • 收稿日期:2018-03-13 修回日期:2018-04-02 出版日期:2018-06-01 发布日期:2018-06-16
  • 通讯作者: 张明强(1974-),男,山东青岛人,高级工程师,硕士,主要从事港口与航道工程设计方面的研究。E-mail:whzmq0911@163.com
  • 作者简介:丁圣辉(1995-),男,湖北荆州人,本科在读,主要从事土木工程道路桥梁方面的研究。E-mail:2569052715@qq.com

Influence of Dynamic Compaction of Wharf Yard Foundation on the Vibration of Adjacent Railway Bridges

DING Sheng-hui1,DING Shu-ping2,ZHANG Ming-qiang3   

  1. 1.School of Civil Engineering, Hubei Engineering University,Xiaogan 432000, China;
    2.Changjiang Geotechnical Engineering Corporation, Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010, China;
    3.Municipal and Traffic Engineering Department, Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010, China
  • Received:2018-03-13 Revised:2018-04-02 Online:2018-06-01 Published:2018-06-16

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摘要： 武汉港花山码头工程陆域堆场位于铁路专用线通过区域。为研究陆域堆场强夯对邻近铁路桥的影响,合理确定强夯工艺,结合强夯试验成果分析了夯能、夯击数、夯击距离与铁路桥振动之间的关系。现场测试采取4 500 kN·m夯能时,强夯击数>5击后铁路桥桥面振动速度收敛至3.5 cm/s。采取6 000 kN·m夯能时,40 m以外的铁路桥桥面振动速度<4.0 cm/s,振动频率<10 Hz,满足《建筑工程容许振动标准》要求。依据试验成果推导出了黏土地基强夯引起的建筑物振动速度衰减规律方程,相关研究成果可为同类工程借鉴参考。

关键词: 码头堆场, 地基强夯加固, 振动, 铁路桥, 安全距离

Abstract: The land yard of Huashan wharf project of Wuhan Port is located in railway line area. To investigate into the influence of dynamic compaction on adjacent railway bridge, hence determining a reasonable compaction technique, we analyzed the relationship between tamping energy, tamping number, tamping distance and railway bridge vibration according to field compaction test.In field test,the vibration velocity of bridge floor converged to 3.5 cm/s when dynamic tamping energy was 4 500 kN·m after tamping number reached 5; the vibration velocity of bridge floor was smaller than 4.0 cm/s and vibration frequency less than 10 Hz when tamping energy amounted to 6 000 kN·m beyond 40 m, which meets the requirements of Standard for Allowable Vibration of Building Engineering. In addition, the equation of vibration velocity attenuation of buildings caused by clayey foundation compaction was deduced based on test results for reference for similar projects.

Key words: wharf yard, dynamic compaction of foundation, vibration, railway bridge, safe distance

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