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静压桩施工的挤土效应较为显著,而其振动效应则较为隐蔽。本文通过对静压桩施工振动进行一系列测试,分析研究了静压桩施工振动产生的原因以及对建筑物的影响程度。研究表明静压桩施工振动与锤击打桩振动不同,静压桩施工振动类似强夯振动,属瞬态冲击振动,震源位于地表,激发的振动波主要为Rayleigh(R)波,振动波的主频较低,对周边民房起主要破坏作用。此外,本文还结合工程实例,研究了隔振沟的减振效果,并对一系列减小静压桩施工振动对环境影响的防治措施进行了检验。表明了通过制定合理的防治措施能有效减小静压桩施工振动对环境的影响。
The compaction effect of static pressure pile construction is more obvious, while its vibration effect is more subtle. In this paper, a series of tests on static pressure pile construction vibration are carried out. The causes of static vibration pile construction vibration and the impact on the building are analyzed. The research shows that the static pressure pile construction vibration is different from the hammering pile driving vibration. The static pressure pile construction vibration is similar to the dynamic impact vibration, which belongs to the transient impact vibration. The source is located on the ground surface, and the excited vibration waves are mainly Rayleigh (R) waves. Lower frequency, the main impact on the surrounding residential buildings. In addition, combined with engineering examples, this paper studies the vibration isolation effect of vibration isolation groove and tests a series of measures to reduce the impact of construction vibration of static pressure pile on the environment. It shows that the environmental impact of the static pressure pile construction vibration can be effectively reduced by formulating reasonable control measures.