【摘要】 通过对12根钢筋混凝土两跨连续开洞深受弯构件在集中荷载作用下的支座反力变化情况进行试验研究,并对试件进行有限元分析,对比了跨高比、剪跨比、有无开洞、洞口位置及大小等因素下的支座反力变化规律以及逐级加载直至破坏过程中边、中支座反力的重分布情况。通过线性回归分析,提出钢筋混凝土两跨连续深受弯构件在集中荷载作用下的支座反力计算公式及破坏阶段开洞深受弯构件剪力取值建议。更多还原

【Abstract】 Based on the experimental study on support reaction variation of 12 reinforced concrete two-span continuous holed deep flexural members under concentrated load,the 12 members were analyzed by finite element method.The support reaction variation rules in terms of such influencing factors as span-depth ratio,shearspan ratio,with or without web openings,size and position of openings and etc.and the reaction redistribution of support reaction under step loading were compared and analyzed.Through linear regression analysis,the support reaction calculation formula of reinforced concrete two-span continuous deep flexural members with web openings under concentrated loading was proposed,and suggestion for selection of shearing force value of deep holed flexural member at damage stage was given.更多还原