钢框架结构静力弹塑性设计方法-结构工程专业论文.docxVIP

北京交通大学硕士学位论文摘要 北京交通大学硕士学位论文 摘要 摘要 目前，静力弹塑性设计方法以其实用性较强的优点正受到越来越多的 关注，已经被 列入我国《建筑结构抗震设计规范》作为结构弹塑性变形验算方法之一。 本文首先概述建筑结构的抗震设计思想、抗震设计、分析方法。基于功能的抗震设 计的提出引起全球抗震工程界的广泛关注和极大的兴趣，静力弹塑性设计方法也重新引 起人们的研究兴趣。其次论述了静力弹塑性设计方法的基本原理、由来和实施步骤。本 文认为静力弹塑性设计方法是由底部剪力法发展而来，其具体实施步骤包括等效地震荷 载的确定、侧向加载终止准则的确定、抗震性能评估方法的讨论。再次系统地探讨了几 种静力弹塑性设计方法的原理和具体的计算步骤，分析几种方法的基本假设的优势与不 足，并且编制 N2 方法和 FEMA356 位移影响系数法求解目标位移的法代程序。然后对 一钢框架结构进行应用实例计算分析，并对其进行抗震性能评估，包括塑性绞出现的先 后顺序、层间位移角、内力、薄弱层、薄弱构件等。对几种静力弹塑性设计方法做了横 向的比较。最后详细地讲述了基于功能的抗震设计方法。 关键词: 静力弹塑性设计方法，静力推覆分析，能力谱方法，塑性饺，结构抗震性能， 底部剪力一顶点位移曲线，基于功能的抗震设计 北京交通大学硕士学位论文 摘要 ABSTRACT NSP Nonlinear static procedure (NSP) has attracted the attention of more and more researchers for its merits of practicality. The nonlinear static procedure has b民ome one of checking ∞mputations tools of nonIinear disωrtion. Rules of design，design procedure and analysis method of structure in earthquake are firstly talked about in this thesis. W抽: 出e suggestion of Performance-Based Seismic Design， it attracted great attention among engineers in 出e world and made nonlinear static prlωedure got atlention aga?n. Then the basic thω巧， origin and 出e approach of 出e NSP was set fòr出. It is believed that NSPωmes from static lateral-force procedures and the approaches of NSP includes confinning equivalent seismic load，the rule of ending the incremental horizontal load and evaluating the performance of the structure in the earthquake. And 也en theories and approaches of the several procedures of NSP are studied. Iterative programs of N2 method and FEMA356 method by which we can get demand displacement are designed. A steel- frame construction is ∞mputed and analyzed，some information such as the appearanω sequence and distribution of structural element plastic hinges，由e distribution of sω可 drif饵， inner force and weak frame member and so 00 can be obtained. Performance based seismic d臼ign is described. Keywords: nonlinear static procedure ，pushover analys?s ，capacity spec缸ummethod relationship between base shear