2014年6月上 施工技术 第43卷第11期 CONSTRUCTION TECHNOLOGY 45 D0I:10.7672/5js2014110045 敏感海域大直径钢管沉桩施工环保措施研究* 谭昱，陈儒发，谭逸波 (广东省长大公路工程有限公司，广东广州510620) [摘要]为减弱海洋工程桩基础施工对海域环境造成的不良影响，开展大直径深长桩基础钢管沉桩施工的环境敏 感性研究，本试验设计特制的减噪装置为气幕发生器，以研究沉桩过程中气泡帷幕的减噪效果；同时，对比分析了 不同沉桩形成对环境影响的强弱.结果表明：钢管沉桩时开启气幕发生器，噪声峰值声压衰减量可达24%~74%； 撞击沉桩产生的噪声峰值声压明显大于振动沉桩所产生的噪声峰值声压，撞击沉桩噪声在一定的频带范围内有较 高的能量分布. [关键词]桥梁工程：桩；钢管沉桩：气幕发生器：峰值声压；试验 [中图分类号]U445.551 [文献标识码]A [文章编号]1002-8498(2014)11-0045-04 Research on Environmental Protection Measures in Construction of Steel Pipe Pile Driving with Large Diameter in Sensitive Sea Areas Tan Yu Chen Rufa Tan Yibo Guangdong Provincial Changda Highway Engineering Co.Ld.Guangzhou Guangdong 510620 China) Abstract:To weaken the adverse effects of the pile foundation construction for marine engineering on the marine environment this paper analyzes environmental sensitivity in construction of steel pipe pile driving for large-diameter and deep-long pile foundation.The special noise reduction device that is air curtain generator which has been designed in the experiment.To study noise reduction effect of the bubble curtain in the process of pile driving;simultaneously parative analysis the strength of the impact on the environment of the different pile driving formation.The results shows that attenuation of the noise peak sound pressure up to 24%to 74%when the air curtain generator is turned on.The noise peak sound pressure generated by impact pile driving is significantly greater than by vibratory pile driv...
敏感海域大直径钢管沉桩施工环保措施研究-.pdf
