三台基础的动力特性分析  

Dynamic Properties of the Foundation of the Three Platforms

作　　者：李子琪 石志飞[1] LI Zi-qi;SHI Zhi-fei(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《科学技术与工程》2021年第11期4570-4575,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51878030)。

摘　　要：针对故宫中三大殿的基础(俗称三台基础),首先综合现有资料并采用复合材料理论,求得其几何及材料参数;而后建立了研究三台基础动力特性的典型单元,并求得其频率衰减域;在此基础上,通过参数分析揭示了卵石含量和初压应力对衰减域的影响规律;最后,给出了三台基础的频域响应数值分析。研究工作增进了人们对三台基础动力特性的认识,为改进相关基础设计提供了指导。Based on the foundation of the 3 main palaces in the Forbidden City(referred to as foundation of the three platforms),by synthesizing the existing data and the theory of composite mechanics,its geometric and material parameters were obtained firstly.Secondly,a typical unit for studying the dynamic characteristics of foundation of the three platforms was established and its frequency attenuation zone was obtained.On this basis,the influence law of pebble content and initial stress on attenuation domain was revealed by parameter analysis.Finally,frequency domain analysis for the foundation was performed.The research provides a new insight for understanding the dynamic characteristics of this kind of foundations and guidance for improving relevant foundation design.

关 键 词：三台基础 周期结构 衰减域 动力分析 

分 类 号：TU470.3[建筑科学—结构工程]