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截至目前为止,考虑桩上对高耸结构影响的研究尚不多见,现在我国对高耸构筑物的设计基本上未考虑桩土与塔式构筑物的动力相互作用影响。为了搞清桩土结构对高耸结构的地震反应影响,本文采用Penzien模型对桩上-高耸结构的动力相互作用进行了分析。为比较考虑共同工作的效果,本文同时对基础固定情况进行了对比计算。计算结果表明,在较软的3、4类场地土条件下,对于高耸结构,考虑桩土-上部结构共同工作与基础固定的地震反应在结构下部有明显差异,对于重要的高耸结构,在进行抗震设计时应当考虑共同工作的影响。
Up to now, it is still rare to consider the influence of piles on towering structures. Nowadays, the design of towering structures in our country basically does not consider the dynamic interaction between pile and soil and tower structures. In order to find out the effect of pile-soil structure on the seismic response of towering structures, Penzien model is used to analyze the dynamic interaction of pile-tower structure. In order to compare the effect of working together, this article also calculated the basic fixed situation at the same time. The calculated results show that for the high-rise structures, under the softer conditions of Class 3 and 4 soil sites, there is a significant difference in the lower part of the structure considering the interaction between the pile-soil structure and the foundation, and for the important high-rise structures, Seismic design should consider the impact of joint work.