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随着我国经济建设的发展,建筑用地日趋紧张,新建筑的施工方案往往受到场地条件的很大限制。特别是当地基条件较差、需要采用桩基时,则打桩振动对邻近建筑的危害性就成为建筑工程界所关心的问题了。本文对如何预估和评价打桩振动的震害进行了初步探讨。一、土中振动波型为了分析打桩振动对邻近建筑的影响,首先应了解振波的类型及其在上中传播的性状。假定把土体看成是匀质各向同性弹性半空间,或成层弹性半空间体。则其弹性波可
With the development of our country’s economic construction, construction land is becoming increasingly tense, and the construction plan for new buildings is often limited by the site conditions. In particular, when the foundation conditions are poor and pile foundations are needed, the hazard of piling vibration to adjacent buildings has become a concern for the construction engineering community. This paper discusses how to predict and evaluate the earthquake damage caused by piling vibration. First, the vibration wave in the soil In order to analyze the impact of pile vibration on the neighboring buildings, we must first understand the type of wave and its spread in the upper traits. It is assumed that the soil is considered to be a homogeneous isotropic elastic half space or a layered elastic half-space body. The elastic wave can