【作者】 杨飞；

【导师】 徐清；

【作者基本信息】 昆明理工大学 ， 结构工程， 2010， 硕士

【摘要】 随着我国城市建设的迅速发展,近年来出现了越来越多的复杂高层建筑,而且有不少复杂高层建筑结构超出了现行规范的要求。相较于一般建筑结构,此类建筑的受力情况复杂,且没有经受过大地震的考验,设计时也难以预测结构的薄弱部位,这就增大了该类结构的破坏概率。因此,凸显了罕遇地震下的超限建筑的抗震性能的研究的重要性。本文以一实际工程为背景,对带加强层的超限框架-核心筒结构来进行研究。本文应用PERFORM-3D三维结构非线性分析与性能评估软件,对本工程建立了三维非线性分析模型。并做了如下的计算分析工作：1)模态分析：对该结构进行模态分析,得到了该结构前15阶的振型的周期与频率,并分析了各阶振型特征,给出了相应的评论。2)罕遇地震作用下的动力弹塑性分析：本文应用PERFORM-3D三维结构非线性分析与性能评估软件,选取了三条地震波(两条自然波和一条人工波),对该结构进行了弹塑性时程分析。并结合该结构在不同地震激励作用下的地震反应,即整体反应指标：地震工况下的层间位移曲线、最大层间位移角曲线、最大层间剪力曲线及结构基底剪力、顶层位移和层间位移角的时程曲线。以及构件损伤情况,对结构的抗震性能进行了评估。进而对罕遇地震作用下的结构的抗震性能有了充分的认识。更多还原

【Abstract】 With the development of city construction, the number of complicated tall building structures is increasing rapidly in our country, some of which go beyond the limitations of Design Codes. The complicated constructions are subjected to complex forces as compared with common buildings, and no test has undergone a major earthquake, it is hard for engineers to recognize the weak parts of the structure, which increases the probability of such structural damage. Thus, the research On their behaviors under the seismic action is essential. In this paper, based on an actual engineering case, it developed research for a transfinite frame-core Wall Structure with Strengthened stories.In this paper, a three-dimensional nonlinear analysis model of a high-rise building was established for this tall building structure in the nonlinear analysis and performance assessment soft called PERFORM-3D. And developed research in several aspects as following:1) Modal analysis:Natural frequency and natural period of the structure’s 15 order modes were obtained in modal analysis. The dynamic characteristics Of the building were displayed, and gives the corresponding comments.2) Dynamic nonlinear analysis under rare earthquake:This paper used the nonlinear analysis and performance assessment soft called PERFORM-3D mentioned above, the time history analysis Of this building was carried out under the three seismic waves(two natural waves and one man-made wave). The seismic performance of the complicated structure was assessed in conjunction with the earthquake response under different seismic waves, including the overall response which indicators:Displacement curve under the Seismic condition, Maximum inter-story drift angle curves, curve of maximum story shear force, time history curve of the structure’s base shear, top displacement and inter-story drift angle. As well as the component injuries. thus we can have a comprehensive recognition about the seismic performances of the structure. we can get full understanding of the seismic performance of structures under the rare earthquake.更多还原