型钢混凝土框排架混合结构弹塑性地震响应及抗震防线问题研究

王 博 白国良 刘 林 代慧娟

振动与冲击 ›› 2014, Vol. 33 ›› Issue (5) : 46-52.

PDF(3110 KB)
PDF(3110 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (5) : 46-52.
论文

型钢混凝土框排架混合结构弹塑性地震响应及抗震防线问题研究

  • 王 博1 白国良1 刘 林2 代慧娟3
作者信息 +

Study on elastic-plastic seismic response and anti-seismic lines of SRC frame-bent hybrid structure

  • WANG Bo1 BAI Guo-liang1 LIU Lin2 DAI Hui-juan3
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文章历史 +

摘要

型钢混凝土框排架混合结构是一种新型的火电厂主厂房结构体系,合理的剪力墙布置能够使该类结构实现三道抗震防线。采用ABAQUS有限元软件进行8度小震、中震、大震以及9度大震下的弹塑性地震反应分析,获得结构在不同强度地震下的基底剪力、整体侧移、层间侧移角以及结构构件的损伤演化特性。研究结果表明:强震作用下剪力墙首先出现损伤破坏,可以起到第一道抗震防线的作用,有效提高了结构的抗震能力;随着地震作用的增强,结构薄弱部位由煤斗层到运转层再到底部两层下移,且整体侧移曲线由弯剪型向剪切型转变;整体结构的变形性能较好,能够满足“大震不倒”的抗震设防需求。最后,通过计算分析提出适用于不同烈度、不同场地类别下的剪力墙布置数量与抗震构造措施,可供工程设计参考。

Abstract

SRC frame-bent hybrid structure is a new type of main building system for thermal power plants, and reasonable arrangement of shear walls can make the structure have three anti-seismic lines. ABAQUS finite element software is used to analyze the elastic-plastic seismic response of the structure under 8 degree minor earthquake, 8 moderate earthquake, 8 major earthquake and 9 degree major earthquake, to acquire the base shear, lateral displacement, inter-story drift and damage evolutionary character of the structure under different earthquake intensities. The results show that: the shear wall is damaged firstly under strong earthquake, which can be the first anti-seismic line, and this can enhance the earthquake resistance of the structure effectively; as the earthquake intensity increase, the weak part of the structure is down from coal hopper floor to operation floor and to bottom two stories, and the lateral displacement curve is shifting from shear-moment-type toward shear-type; the deformation performance of the whole structure is well, which can make the structure meet the requirement of “no collapse under severe earthquake”. Finally, the reasonable arrangement and seismic tectonic measure of shear wall under different earthquake intensities and different site category are advised through calculation analysis, which could be referred by engineering design.

关键词

型钢混凝土框排架混合结构 / 弹塑性地震反应 / 变形性能 / 损伤演化 / 薄弱部位 / 抗震防线

Key words

SRC frame-bent hybrid structure / elastic-plastic seismic response / deformation performance / damage evolution / weak parts / anti-seismic lines

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王 博 白国良 刘 林 代慧娟. 型钢混凝土框排架混合结构弹塑性地震响应及抗震防线问题研究[J]. 振动与冲击, 2014, 33(5): 46-52
WANG Bo BAI Guo-liang LIU Lin DAI Hui-juan. Study on elastic-plastic seismic response and anti-seismic lines of SRC frame-bent hybrid structure[J]. Journal of Vibration and Shock, 2014, 33(5): 46-52

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