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首页> 外文会议>Structural Engineers Association of California(SEAOC) Convention; 20040825-28; Monterey,CA(US) >Is Nonlinear Dynamic Analysis Ever Useful?: The Case of a Partially Constructed 54 Story Building that Did Not Satisfy Seismic Code Reqirements
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Is Nonlinear Dynamic Analysis Ever Useful?: The Case of a Partially Constructed 54 Story Building that Did Not Satisfy Seismic Code Reqirements

机译：非线性动力分析是否有用？：部分建造的54层建筑物不满足地震规范要求的情况

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摘要

This paper presents the application of linear and nonlinear performance based seismic design methodologies for solving a complex mixture of engineering and economical issues. A 54 story residential building was constructed to the 38th floor when it was discovered by a technical review panel that it does not meet the letter of the governing building code requirements. More specifically, the structural system of the building consisted of shear walls and slabs only. The local code, similar to IBC and UBC provisions, did not permit such a system for buildings taller than 160 feet (about 10 to 12 stories tall). This building, however, was significantly taller. The question therefore was, whether code noncompliance meant that the building was not safe for occupancy. A series of linear and nonlinear investigations were performed based on the FEMA-356 methodologies. Application of linear dynamic procedure (LDP) and nonlinear dynamic procedure (NDP) appeared to suggest markedly different performance issues with the structure. A closer scrutiny, however, showed that the results obtained from the procedures, were not that different, if they were evaluated with the limitations of LDP in mind. Schemes were devised to modify the construction of the upper floors, not yet built, in order to produce a building that would meet the desired seismic performance objectives. The construction of upper floors of the building is now underway.
机译：本文介绍了基于线性和非线性性能的抗震设计方法在解决工程和经济问题的复杂组合中的应用。当技术审查小组发现这栋54层高的住宅楼建于38楼时，发现它不符合规范的建筑规范要求。更具体地说，建筑物的结构系统仅由剪力墙和楼板组成。类似于IBC和UBC的规定，当地法规不允许将这种系统用于高度超过160英尺（约10至12层的建筑物）的建筑。但是，这座建筑物高得多。因此，问题是，不遵守法规是否意味着该建筑物不安全。基于FEMA-356方法进行了一系列线性和非线性研究。线性动态过程（LDP）和非线性动态过程（NDP）的应用似乎表明该结构存在明显不同的性能问题。但是，更仔细的研究表明，如果在考虑了LDP的局限性的基础上对这些程序进行评估，结果并没有太大不同。设计了一些方案来修改尚未建造的高层建筑，以生产出能够满足所需抗震性能目标的建筑物。该建筑物的高层正在建设中。

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