楼板开角缝后框架梁端受弯承载力计算
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摘要
按照《建筑抗震设计规范》(GB50011-2010)的要求,计算不考虑楼板内钢筋与考虑楼板钢筋的梁端受弯承载力,证明现浇楼板内钢筋对梁的承载力具有增大作用,通过采用楼板开角缝的方法,计算分析梁端受弯承载力的变化情况。计算结果表明,采取开角缝的措施之后,梁端受弯承载力降低17%,削弱了板内配筋对梁端受弯承载力的影响。
According to "Code for seismic design of buildings"(GB50011-2010),the flexural capacity of beams of steel reinforcement in floor should be taken into account instead of steel reinforcement.It is prove that the flexural capacity of beams can be enhanced by cast-in-place steel reinforcement in floor.Through using the approach of slotting in floor to calculate and analyze the change of the bending resistance of the beams.The results show that the flexural capacity of the beams' end decreased 17% after taking the measure of slot-cutting in cast-in-place floor,and weakened the effect of flexural capacity of steel reinforcement in floor on beams.
According to "Code for seismic design of buildings"(GB50011-2010),the flexural capacity of beams of steel reinforcement in floor should be taken into account instead of steel reinforcement.It is prove that the flexural capacity of beams can be enhanced by cast-in-place steel reinforcement in floor.Through using the approach of slotting in floor to calculate and analyze the change of the bending resistance of the beams.The results show that the flexural capacity of the beams' end decreased 17% after taking the measure of slot-cutting in cast-in-place floor,and weakened the effect of flexural capacity of steel reinforcement in floor on beams.
引文
[1]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989.
[2]李国胜.高层混凝土结构——抗震设计要点、难点及实例[M].北京:中国建筑工业出版设,2009:203.
[3]中华人民共和国行业标准,建筑抗震设计规范(GB50011-2010)[S].北京:中国建筑工业出版社,2010.
[4]中华人民共和国行业标准,混凝土结构设计规范(GB50010-2010)[S].北京:中国建筑工业出版社,2010.
[5]杨红,王建辉,白绍良.双向地震作用对框架柱端弯矩增大系数的影响分析[J].土木工程学报,2008,41(9):40-47.
[2]李国胜.高层混凝土结构——抗震设计要点、难点及实例[M].北京:中国建筑工业出版设,2009:203.
[3]中华人民共和国行业标准,建筑抗震设计规范(GB50011-2010)[S].北京:中国建筑工业出版社,2010.
[4]中华人民共和国行业标准,混凝土结构设计规范(GB50010-2010)[S].北京:中国建筑工业出版社,2010.
[5]杨红,王建辉,白绍良.双向地震作用对框架柱端弯矩增大系数的影响分析[J].土木工程学报,2008,41(9):40-47.