新旧规范混凝土框架结构计算分析与配筋对比
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摘要
《建筑抗震设计规范》(GB 50011-2010)、《混凝土结构设计规范》(GB 50010-2010)、《高层建筑混凝土结构技术规程》(JGJ 3-2010)已相继颁布,新规范结合最新的科研成果及震害经验对旧规范中的条文进行修订,规范条文变化对结构整体计算指标及配筋产生多大影响是广大设计人员最为关心的问题。本文采用新旧规范SATWE软件对某框架结构工程算例进行了计算与比较,给出按新旧规范计算的结构整体指标和构件配筋的差异,从梁刚度增大系数取值方法、扭转位移比计算方法及楼梯的考虑对结构总体指标变化的主要原因进行了分析说明,从高强钢筋的应用、抗震等级、柱内力调整、梁斜截面抗剪承载力计算公式变化、正常使用极限状态验算等方面对配筋变化的主要原因进行了分析,供设计人员参考。
New national codes including Code for seismic design of buildings, Code for design of concrete structures and Technical specification for concrete structures of tall building have been published in 2010. A lot of items have been revised base on latest achievements of scientific research and earthquake damage research. How these changes affect structure index and the area of steel reinforcement become the main concern to structural designers. In this paper, a frame structure is analyzed and designed by the new SATWE program and the old one, analyzed and designed results such as overall indexes and the area of steel reinforcement are listed and compared and the following conclusions can be drawn: the beam moment of inertia magnify method, calculation of torsional displacement ratio, considering stairs are the main factors contributing to the overall index difference; the use of high strength steel reinforcement, seismic design grade of structural members, modification of column internal force ,calculation of shear capability and checking of serviceability limit states are the main factors contributing to the area of steel reinforcement. The conclusions can be a reference for designers.
New national codes including Code for seismic design of buildings, Code for design of concrete structures and Technical specification for concrete structures of tall building have been published in 2010. A lot of items have been revised base on latest achievements of scientific research and earthquake damage research. How these changes affect structure index and the area of steel reinforcement become the main concern to structural designers. In this paper, a frame structure is analyzed and designed by the new SATWE program and the old one, analyzed and designed results such as overall indexes and the area of steel reinforcement are listed and compared and the following conclusions can be drawn: the beam moment of inertia magnify method, calculation of torsional displacement ratio, considering stairs are the main factors contributing to the overall index difference; the use of high strength steel reinforcement, seismic design grade of structural members, modification of column internal force ,calculation of shear capability and checking of serviceability limit states are the main factors contributing to the area of steel reinforcement. The conclusions can be a reference for designers.
引文
[1]国家标准建筑抗震设计规范管理组.建筑抗震设计规范GB50011-2010统一培训教材[M].北京:地震出版社,2010.
[2]叶列平,曲哲等.从汶川地震框架结构震害谈“强柱弱梁”屈服机制的实现[J].建筑结构,2008,38(11):52-59,67.
[3]薛彦涛,黄世敏等.汶川地震钢筋混凝土框架结构震害及对策[J].工程抗震与加固改造,2009,31(5):93-100.
[4]中华人民共和国国家标准.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]中华人民共和国国家标准.混凝土结构设计规范GB50010-2002[S].北京:中国建筑工业出版社,2002.
[6]中华人民共和国国家标准.建筑抗震设计规范GB50011-2002[S].北京:中国建筑工业出版社,2002.
[7]中华人民共和国国家标准.建筑抗震设计规范GB50011-2010[S].北京:中国建筑工业出版社,2010.
[8]赵基达,徐有邻.《混凝土结构设计规范》修订概况(一)[J].建筑结构,2011,41(2):132-136.
[9]王亚勇,张海明.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(一)[J].建筑结构,2010,40(12):135-138.
[10]夏绪勇,徐有邻.新旧混凝土规范构件配筋设计比较[J].建筑结构,2011,41(11):145-147,124.
[2]叶列平,曲哲等.从汶川地震框架结构震害谈“强柱弱梁”屈服机制的实现[J].建筑结构,2008,38(11):52-59,67.
[3]薛彦涛,黄世敏等.汶川地震钢筋混凝土框架结构震害及对策[J].工程抗震与加固改造,2009,31(5):93-100.
[4]中华人民共和国国家标准.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]中华人民共和国国家标准.混凝土结构设计规范GB50010-2002[S].北京:中国建筑工业出版社,2002.
[6]中华人民共和国国家标准.建筑抗震设计规范GB50011-2002[S].北京:中国建筑工业出版社,2002.
[7]中华人民共和国国家标准.建筑抗震设计规范GB50011-2010[S].北京:中国建筑工业出版社,2010.
[8]赵基达,徐有邻.《混凝土结构设计规范》修订概况(一)[J].建筑结构,2011,41(2):132-136.
[9]王亚勇,张海明.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(一)[J].建筑结构,2010,40(12):135-138.
[10]夏绪勇,徐有邻.新旧混凝土规范构件配筋设计比较[J].建筑结构,2011,41(11):145-147,124.
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