地下连续墙成槽施工振动对邻近古建筑的影响

康恒一; 戴浩宇; 沈碧辉

doi:10.13204/j.gyjzG21110211

地下连续墙成槽施工振动对邻近古建筑的影响

doi: 10.13204/j.gyjzG21110211

1. 中国电建集团华东勘测设计研究院有限公司交通市政工程院, 杭州 311122;
2. 浙江大学建筑工程学院, 杭州 310058

基金项目:

浙江省重点研发计划项目（2019C03111）。

详细信息

作者简介:
康恒一,男,1991年出生,博士,工程师。电子信箱:hykang91@hotmail.com

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- 文章访问数: 89
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-02
- 网络出版日期: 2023-03-22

Research on Influence of Construction Vibration Due to Underground Diaphragm Excavation on Nearby Ancient Buildings

1. Transportation and Municipal Engineering Institute, Power China Huadong Engineering Corporation Limited, Hangzhou 311122, China;
2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

摘要

摘要: 地下连续墙是地铁车站和明挖法隧道常见的围护结构形式。当地下连续墙在岩石中成槽施工时，破岩过程产生的振动可能会威胁周边的建、构筑物，尤其是古建筑物的安全。选取杭州市吴山广场地铁车站工程现场实测记录，分析冲击钻、铣槽机、旋挖钻三种常见成槽施工机械引起的振动特性和衰减规律。从施工机械振源处的初始振速来评估施工引起的振动，在竖直方向上，旋挖钻最大，铣槽机次之，冲击钻最小。而在水平方向上，旋挖钻最大，冲击钻次之，铣槽机最小。基于以上监测成果，计算了在临近典型石塔类古建筑物施工时的安全距离，结果表明所需安全距离，冲击钻最大、旋挖钻次之、铣槽机最小。建议当有类似石塔保护需求时，采用铣槽机结合旋挖钻进行地下连续墙成槽施工。
- 成槽施工 /
- 施工振动 /
- 地下连续墙 /
- 文物保护
Abstract: Diaphragm wall is a kind of typical temporary retaining structure for construction of metro stations and open-cut tunnels. When the trench of a diaphragm wall was drilled in rock, vibration was generated by rock fracturing, which might threaten the safty of adjacent structures, especially ancient buildings. Field monitoring records under construction of Wushan Square Metro Station in Hangzhou were selected. The characteristics of vibration and attenuation during wave propagation were analyzed for three common trench cutting machines:the impact drill, the slot milling machine and the rotary drill. Results showed that the initial vibration speed produced by the rotary drill in the vertical direction at the vibration source was maximum, the second was produced by the slot milling machine, and the smallest was produced by the impact drill. But in the horizontal direction, the rotary drill was the largest, the next was produced by the impact drill, and the smallest was produced by the slot milling machine. The results were applied in analysis of safe space between construction machinery and a typical ancient stone tower under tunnelling construction. The impact severity in descending order due to construction on adjacent towers was the rotary drill, the impact drill and the slot milling machine. Therefore, it was recommended the slot milling machine to be used, when there was a need to protect ancient stone towers.
- trench construction /
- construction vibration /
- diaphragm wall /
- ancient building protection

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参考文献(12)

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