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首页> 外文会议>Structural Engineers Association of California(SEAOC) Convention; 20040825-28; Monterey,CA(US) >Assessment of Torsional Provisions in Seismic Design of Buildings
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Assessment of Torsional Provisions in Seismic Design of Buildings

机译：评估建筑物抗震设计中的扭转规定

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This paper reports on preliminary results from an ongoing comprehensive study addressing torsional provisions in the building code with the objective of arriving at a clearer understanding of design specifications for buildings with torsional irregularities. One such issue is related to the requirement that necessitates a linear dynamic analysis when structural irregularities are identified. The question is whether the seismic behavior of the structure can be adequately determined by a linear analysis. In an attempt to address this issue, a systematic study a group of buildings, classified as torsionally irregular structures in IBC 2000, is undertaken. Detailed nonlinear static, linear dynamic and nonlinear dynamic analyses are carried out to investigate the effectiveness of pushover and linear dynamic procedures to predict seismic demands and overall behavior of torsionally irregular buildings. Preliminary findings from the first phase of the study suggest that demand estimates can vary from one method to another particularly with increasing nonlinearity.
机译：本文报告了正在进行的针对建筑规范中扭转规定的全面研究的初步结果，目的是使人们对不规则扭转的建筑物的设计规范有更清晰的了解。一个这样的问题与在确定结构不规则时需要进行线性动态分析的要求有关。问题是，是否可以通过线性分析充分确定结构的抗震性能。为了解决这个问题，对IBC 2000中被归类为扭转不规则结构的一组建筑物进行了系统的研究。进行了详细的非线性静态，线性动力和非线性动力分析，以研究推覆和线性动力程序在预测不规则扭转建筑的地震需求和整体性能方面的有效性。研究第一阶段的初步结果表明，需求估算可能因一种方法而异，特别是随着非线性的增加。

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