火电厂主厂房结构试验及基于位移的设计方法研究
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摘要
为了解决目前火电厂主厂房此类特殊工业建筑的性能指标不确定及设计中存在的问题,进行主厂房结构的抗震性能试验研究,提出采用基于位移的抗震设计方法。通过试验研究,给出了不同地震作用下结构的破损形态及变形性能指标,结合前期研究成果,确定了主厂房结构的抗震性能目标,采用层间位移角限值作为结构性能水准的量化指标。给出了基于位移的设计方法在主厂房设计中的应用关键点及设计步骤,运用此方法进行某火电厂主厂房不同性能水准下的计算分析。结果表明,应用基于位移的设计方法可以有效地保证不同强度地震作用下结构及设备的安全,尤其是对罕遇震作用下结构的破坏控制;给出的相关设计指标满足要求,可供同类工程设计时参考和应用。
In order to solve existing problems of performance index and seismic design of main buildings for thermal power plants,experimental study on the seismic performance was conducted,and displacement-based seismic design(DBSD) method was proposed.Damaged pattern and deformation performance index under different intensities earthquake effect were given through the experiment study,seismic performance objectives were confirmed at the same time.Performance levels were quantified with storey drift ratios.Application key points and procedure of the DBSD method were determined for main building design.It was used to calculate one main building in different performance levels.The results show that the DBSD method can effectively ensure safety of the structure and equipment in different earthquake action,especially structural damage control under the strong earthquakes.The design index given in the paper can meet the demands,which can provide reference and application for similar engineering design.
In order to solve existing problems of performance index and seismic design of main buildings for thermal power plants,experimental study on the seismic performance was conducted,and displacement-based seismic design(DBSD) method was proposed.Damaged pattern and deformation performance index under different intensities earthquake effect were given through the experiment study,seismic performance objectives were confirmed at the same time.Performance levels were quantified with storey drift ratios.Application key points and procedure of the DBSD method were determined for main building design.It was used to calculate one main building in different performance levels.The results show that the DBSD method can effectively ensure safety of the structure and equipment in different earthquake action,especially structural damage control under the strong earthquakes.The design index given in the paper can meet the demands,which can provide reference and application for similar engineering design.
引文
[1]吴继伟.基于力的抗震设计方法与基于位移的抗震设计方法比较研究[J].工业建筑,2010,40(7):36-41.
[2]梁兴文.结构抗震性能设计理论与方法[M].北京:科学出版社,2011:23-25.
[3]刘林.大型火电厂主厂房少墙型钢混凝土框架结构体系地震作用效应与设计方法研究[D].西安:西安建筑科技大学,2009.
[4]白国良,康灵果,李红星,等.大型火力发电厂SRC框架柱-RC分散剪力墙主厂房混合结构体系抗震性能试验研究[J].土木工程学报,2011,44(9):21-26.
[5]季静,肖启艳,黄超,等.基于性能的钢筋混凝土剪力墙受弯破坏变形限值的研究[J].建筑结构学报,2010,31(9):35-41.
[6]蒋欢军,郑建波,张桦.基于位移的抗震设计研究进展[J].工业建筑,2008,38(7):1-5.
[7]梁兴文,黄雅捷,杨其伟.钢筋混凝土框架结构基于位移的抗震设计方法研究[J].土木工程学报,2005,38(9):53-60.
[8]GB50011—2010建筑抗震设计规范[S].
[2]梁兴文.结构抗震性能设计理论与方法[M].北京:科学出版社,2011:23-25.
[3]刘林.大型火电厂主厂房少墙型钢混凝土框架结构体系地震作用效应与设计方法研究[D].西安:西安建筑科技大学,2009.
[4]白国良,康灵果,李红星,等.大型火力发电厂SRC框架柱-RC分散剪力墙主厂房混合结构体系抗震性能试验研究[J].土木工程学报,2011,44(9):21-26.
[5]季静,肖启艳,黄超,等.基于性能的钢筋混凝土剪力墙受弯破坏变形限值的研究[J].建筑结构学报,2010,31(9):35-41.
[6]蒋欢军,郑建波,张桦.基于位移的抗震设计研究进展[J].工业建筑,2008,38(7):1-5.
[7]梁兴文,黄雅捷,杨其伟.钢筋混凝土框架结构基于位移的抗震设计方法研究[J].土木工程学报,2005,38(9):53-60.
[8]GB50011—2010建筑抗震设计规范[S].
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