地基强夯振动测试分析及防振动措施  

Test and Measurement of the Vibration Induced by Heavy Ramming Foundation and Anti-vibration Measure

作　　者：尹坚[1] 张良涛[1] 

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道工程学报》2009年第4期17-20,共4页Journal of Railway Engineering Society

摘　　要：研究目的:合武铁路红安综合工区地基采用强夯处理,对场地附近居民房屋造成严重振动影响。为确保施工时民房安全,保护居民生活环境,特对强夯振动进行测试分析并提出可靠的防振动措施。研究结论:强夯产生强烈的冲击振动,如不采取减振措施,紧邻场地的居民房屋可能出现破损,民房室内铅垂向Z振级超过环境标准限值;强夯振动主要频率远离建筑物自振频率,不会引起建筑物共振;隔振沟是降低强夯振动影响的有效措施,建议将隔振沟加深并清空沟内杂物,必要时对沟壁进行喷浆支护,以进一步提高隔振效果;对紧邻现场的民房住户应临时搬迁,开展施工振动监控,施工完毕后进行必要的结构修复。Research purposes： The heavy ramming was used for the foundation of Hong＇an Comprehensive Maintenance Depot for Hefei - Wuhan Railway, which induced the serious impact on the adjacent resident houses. For safety of the houses and maintaining a normal living environment, it is necessary to perform a specific test and measurement of ramming vibration and work out the reliable anti -vibration measures. Research conclusions ：The vibration of heavy ramming would damage the adjacent resident houses and the vertical Z - weighted vibration acceleration within the house would also exceed the state standard if no countermeasures are taken. The ramming will not induce resonance of the houses if the main frequency of ramming vibration is far away from the house inherent frequency. Vibration - isolation ditch is an effective structure for attenuation of vibration. It is recommended to deepen the vibration - isolation ditch and take out debris in it as well as if necessary, the concrete can be jetted to the ditch wall for better effects. In the meantime, for ensuring safety, the adjacent residents can move out and the monitoring of vibration can be conducted to the houses during the ramming. After completion of construction, the structure of the houses should be repaired.

关 键 词：地基 强夯 振动 测量 措施 

分 类 号：TU441[建筑科学—岩土工程]