【摘要】 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。更多还原

【Abstract】 Jacked pile construction,its soil compaction effect is quite significant,its vibration effect is quite hidden. In this paper,through a series of tests of the vibration of jacked pile construction,the causes of the jacked pile construction vibration were analyzed and the extent of vibration impact on buildings was analyzed. Studies show that the jacked pile construction vibration and hammering piling vibration characteristics are not the same. Jacked pile construction vibration and the dynamic compaction vibration are similar,it is a transient shock vibration,its vibration source is located at the surface,the main vibrational wave is Rayleigh( R) wave,it is a low-frequency vibration,that is the main reason for damage to surrounding houses. In addition,with an engineering example the authors tested a series of preventive measures that reducing the impact of jacked pile construction on the environment,studied the damping effect of the isolation trench. The results show that the impact of jacked pile construction on the environment can be effectively reduced through development of rational preventive measures.更多还原