| 某站场地基强夯振动影响范围研究 |
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| 引用本文： | 安惠泽,许兆义,冯瑞玲.某站场地基强夯振动影响范围研究[J].北方交通大学学报,2010(1):50-53. |
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| 作者姓名： | 安惠泽 许兆义 冯瑞玲 |
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| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]中铁第五勘察设计院集团有限公司,北京102600 |
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| 基金项目： | 教育部“培育资金”项目资助（708010） |
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| 摘 要： | 针对某站场地基采用6000kN·m夯击能强夯加固海漫滩填海区工程，现场测试了地表振动速度，在此基础上，分析研究了振动在水平方向的衰减规律、主振频率等，分析了拟建场地边立交桥在不同夯击能下的安全距离．结果表明：地表最大振动速度的衰减规律满足乘幂关系；强夯产生的振动的主振频率均处于10Hz以下；以地表振动速度作为判别标准，测得该场地在6000kN·m夯击能下对立交桥的安全距离为30m．
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| 关 键 词： | 强夯 振动 安全距离 |
Study on the Ground Vibration Zone During Dynamic Compaction for Site Improvement of A Railway Station and Yard Ground |
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| AN Huize,XU Zhaoyi,FENG Ruiling.Study on the Ground Vibration Zone During Dynamic Compaction for Site Improvement of A Railway Station and Yard Ground[J].Journal of Northern Jiaotong University,2010(1):50-53. |
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| Authors: | AN Huize XU Zhaoyi FENG Ruiling |
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| Institution: | 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. The Fifth Survey ＆ Design Institute of China Railway, Beijing 102600, China) |
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| Abstract: | A floodplain near the sea for railway station and yard ground was treated by dynamic compaction method with 6 000 kN·m dynamic energy, and the vibration velocity of the ground was tested in site. Then the paper studies the attenuation rule of the vibration velocity along the horizontal direction, the principal vibration frequency, etc. and analyzes the safe distance of an overpass near the construction site under different dynamic energy based on the test results. The results show that ① the attenuation rule of the maximum velocity is coincident with the power function; ②the principal vibra- tion frequency caused by dynamic compaction is less than 10 Hz; ③the safe distance of the overpass is 30 meter when the dynamic energy is 6 000 kN·m. |
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| Keywords: | dynamic compaction vibration safe distance |
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