两种特殊相邻建筑地震碰撞研究

发布时间：2018-01-20 22:59

本文关键词： 相邻建筑不等层高碰撞子结构相邻建筑群地震响应　出处：《福州大学》2014年硕士论文　论文类型：学位论文

【摘要】：本文针对两种特殊相邻建筑,不等层高相邻建筑以及相邻建筑群,在地震作用下的碰撞问题,进行了如下研究：(1)总结和分析了相邻建筑的碰撞分析方法：碰撞动力学法,拉格郎日乘子法和接触单元法。比较分析了各种碰撞分析模型的优缺点。(2)通过对层间碰撞区域附加子结构,建立了不等层高相邻建筑碰撞分析模型,推导了其碰撞动力方程,并编制了相应的分析程序。(3)以双单体相邻框架结构为例,分析了不等层高相邻建筑的碰撞响应,在此基础上,研究了其影响参数及其规律。结果表明：不等层高碰撞对主结构的影响比相应的等层高碰撞小,但对局部构件的影响很大。此外,结构周期比、初始间距、错层位置、子结构刚度以及子结构质量等对层间碰撞响应有显著影响。(4)利用Hertz-damp非线性碰撞模型,建立了相邻建筑群碰撞分析模型,推导了其动力碰撞方程,并编制了相应的分析程序。(5)分别分析了三单体、四单体以及五单体相邻建筑群的碰撞响应,在此基础上,研究了其影响参数及其规律。研究表明：建筑群碰撞对末端单体所产生的碰撞影响比相应的两单体碰撞所产生的影响大,其影响随着单体数量的增加而增大。中间单体由于受到遭受双边碰撞,其碰撞响应甚至比地震响应小。此外,结构周期比、初始间距以及结构布局等对相邻建筑群碰撞响应有显著影响。
[Abstract]:In this paper, the collision problem of two special adjacent buildings, adjacent buildings with unequal storeys and adjacent buildings under the action of earthquake is discussed in this paper. The impact analysis method of adjacent buildings is summarized and analyzed as follows: collision dynamics method. Lagrangian multiplier method and contact element method. The advantages and disadvantages of various collision analysis models are compared. The dynamic equation of collision is derived, and the corresponding analysis program is worked out. Taking the two-cell adjacent frame structure as an example, the collision response of adjacent buildings with unequal story height is analyzed. The results show that the impact of unequal layer height collision on the main structure is less than that of the corresponding level height collision, but the influence on the local members is great. In addition, the structure period ratio and initial spacing are also studied. The location of staggered floor, stiffness of substructure and mass of substructure have significant influence on the response of interstory collision. (4) based on the Hertz-damp nonlinear collision model, the collision analysis model of adjacent buildings is established. The dynamic collision equation is derived and the corresponding analysis program is compiled. The collision responses of three monomers, four monomers and five monomers adjacent buildings are analyzed respectively. The influence parameters and their laws are studied. The results show that the impact of the collision on the terminal monomers is greater than that on the corresponding two monomers. The impact increases with the increase of the number of monomers. The collision response of intermediate monomers is even smaller than that of earthquake due to the bilateral collision. In addition, the structure period ratio. The initial spacing and structure layout have a significant effect on the collision response of adjacent buildings.
【学位授予单位】：福州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU352.11

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