CAJ | 학술논문

运用动力时程反应分析方法,利用非线性有限差分软件FLAC3D对某电站取水隧洞与热水回流沟衔接段结构进行抗震分析.针对场地地质特征和回填条件分析结构地震响应,通过编制FLAC3D程序并结合五点公式计算衬砌结构的内力,给出了衬砌内力包络图.数值分析结果表明:在相同的荷载效应组合情况下,温度的改变对内力的影响较为显著,温度荷载不仅显著改变了隧洞和热水回流沟衔接段的内力大小,而且改变了某些部位的内力方向;衔接段采用圆形接口优于采用方形接口.
운용동력시정반응분석방법,이용비선성유한차분연건FLAC3D대모전참취수수동여열수회류구함접단결구진행항진분석.침대장지지질특정화회전조건분석결구지진향응,통과편제FLAC3D정서병결합오점공식계산츤체결구적내력,급출료츤체내력포락도.수치분석결과표명:재상동적하재효응조합정황하,온도적개변대내력적영향교위현저,온도하재불부현저개변료수동화열수회류구함접단적내력대소,이차개변료모사부위적내력방향;함접단채용원형접구우우채용방형접구.
By using the dynamic time-history analysis method, seismic analysis was performed on the joint section between the intake tunnel and the hot-water circumfluence groove for a hydropower station by FLAC3D software. Aiming at the geological characteristics and the backfill condition of the site, analysis of seismic response for the joint section was carried on, and the internal forces of the lining structure were calculated by combining secondary development of FLAC3D with the five-point formula. Based on it, the internal force envelop diagram for the lining structure was presented. Numerical simulation shows that, under identical load effect combination, the effect of temperature on internal forces is remarkable:the variety on temperature load not only significantly changes the value but also changes the orientations of the internal forces for certain parts. Meanwhile, it can be concluded that the circular interface is superior to the square interface for the joint section.