不同种类填充墙周期折减系数取值的分析
|
摘要
填充墙增大了结构刚度,从而加大了结构承受的地震作用。但目前计算结构自振周期时没有考虑填充墙刚度对周期的影响,而是采用了将动力计算的自振周期乘以周期折减系数的方法来估算填充墙刚度的影响。现行《高层建筑混凝土结构技术规程》给出了周期折减系数的建议值,但没有区分不同填充墙的种类。本文基于结构动力学基本原理,采用刚度等效的方法推算出不同种类填充墙的周期折减系数,给出了目前广泛应用的加气混凝土砌块、普通混凝土空心砌块、轻骨料混凝土空心砌块、粘土空心砌块和横孔连锁混凝土空心砌块的周期折减系数建议值,可供工程设计人员参考。
The filled wall increases the structural rigidity accordingly increasing the structure capacity under earthquake action.At present,when calculating the natural vibration period of structure,many scholars choose to leave out the consideration of the filled wall stiffness.Usually,they just estimate its influence by multiplying the dynamic calculation of the natural vibration period and period shortening factor.The existing Technical Specification for Concrete Structures of Tall Building gives out a recommended value of the period shortening factor,but doesn't distinguish the types of filled walls.So,it is not perfect.Based on the basic principles of structural dynamics,the period shortening factor of different filled walls is calculated by the method of rigidity equivalence,a recommended value of the period time deduction factor for some most widely used building blocks is suggested,such as antoclaved aerated concrete blocks,normal concrete small hollow blocks,lightweight aggregate concrete hollow blocks,fired clay hollow blocks and cross-drilled hole concrete hollow blocks.It may provide reference for the engineering designers.
The filled wall increases the structural rigidity accordingly increasing the structure capacity under earthquake action.At present,when calculating the natural vibration period of structure,many scholars choose to leave out the consideration of the filled wall stiffness.Usually,they just estimate its influence by multiplying the dynamic calculation of the natural vibration period and period shortening factor.The existing Technical Specification for Concrete Structures of Tall Building gives out a recommended value of the period shortening factor,but doesn't distinguish the types of filled walls.So,it is not perfect.Based on the basic principles of structural dynamics,the period shortening factor of different filled walls is calculated by the method of rigidity equivalence,a recommended value of the period time deduction factor for some most widely used building blocks is suggested,such as antoclaved aerated concrete blocks,normal concrete small hollow blocks,lightweight aggregate concrete hollow blocks,fired clay hollow blocks and cross-drilled hole concrete hollow blocks.It may provide reference for the engineering designers.
引文
[1]曹万林,王光远,等.轻质填充墙异型柱框架结构层刚度及其衰减过程的研究[J].建筑结构学报,1995,16(5):20～31Cao Wan-lin,Wang Guang-yuan,et al.Study on the Story Stiffness and Its Degeneration of Frame with Light Weight Infilling and Special Shape Columns[J].Journal of Building Structures,1995,16(5):20～31(in Chinese)
[2]卢亚琴,马克俭.周期折减系数对地震作用的影响[J].贵州大学学报,2011,28(1):101～103Lu Ya-qin,Ma Ke-jian.The Effect of Cycle Reduction Factor for Earthquake Function[J].Journal of Guizhou University,2011,28(1):101～103(in Chinese)
[3]张敬书,姜丽娜,冯立平,等.周期折减系数合理取值的探讨[J].建筑技术,2010,41(1):49～51Zhang Jing-shu,Jiang Li-na,Feng Li-peng,et al.Research on Period Shortening Factor[J].Architecture Technology,2010,41(1):49～51(in Chinese)
[4]建设部工程质量安全监督与行业发展司,中国建筑标准设计研究所.全国民用建筑工程设计技术措施-结构[M].北京:中国计划出版社,2003The Ministry of Construction Engineering Quality Supervision and Industry Development Division,China Institute of Building Standard Design&Research.National Technical Measures for Design of Civil Construction(Structure)[M].Beijing:China Planning Press,2003(in Chinese)
[5]王君.考虑填充墙作用的框架结构抗震性能分析[D].成都:西南交通大学,2010Wang Jun.The Assessment of Seismic Performance of Infilled Frame Structures[D].Chengdu:Southwest Jiaotong University,2010(in Chinese)
[6]龚思礼.建筑抗震设计手册(第二版)[M].北京:中国建筑工业出版社,2002Gong Si-li.Seismic Design Manual(Second Edition)[M].Beijing:China Architecture&Building Press,2002(in Chinese)
[7]高小旺,卜庆顺.多层钢筋混凝土框架房屋周期折减系数和层间弹性位移修正系数的取值[J].建筑结构,1993,23(2):42～46Gao Xiao-wang,Bu Qing-shun.The Cycle Reduction Factor of Multi-storey Reinforced Concrete Frame Building and the Correction Factor of Inter-layer Elastic Displacement[J].Building Structure,1993,23(2):42～46(in Chinese)
[8]甘11J16,横孔连锁混凝土空心砌块填充墙[S]Gan11J16,Walls Made by Cross-drilled Hole Concrete Hollow Blocks[S](in Chinese)
[9]罗福午,方鄂华,叶知满.混凝土结构及砌体结构[M]Luo Fu-wu,Fang E-hua,Ye Zhi-man.The Concrete Structure and Masonry Structure[M](in Chinese)
[10]GB50003-2011,砌体结构设计规范[S]GB50003-2011,Code for Design of Masonry Structures[S](in Chinese)
[11]GB50574-2010,墙体材料应用统一技术规范[S]GB50574-2010,Uniform Technical Code for Wall Materials Used in Buildings[S](in Chinese)
[12]JGJ/T17-2008,蒸压加气混凝土建筑应用技术规程[S]JGJ/T17-2008,Technical Specification for Application of Autoclaved Aerated Concrete[S](in Chinese)
[2]卢亚琴,马克俭.周期折减系数对地震作用的影响[J].贵州大学学报,2011,28(1):101～103Lu Ya-qin,Ma Ke-jian.The Effect of Cycle Reduction Factor for Earthquake Function[J].Journal of Guizhou University,2011,28(1):101～103(in Chinese)
[3]张敬书,姜丽娜,冯立平,等.周期折减系数合理取值的探讨[J].建筑技术,2010,41(1):49～51Zhang Jing-shu,Jiang Li-na,Feng Li-peng,et al.Research on Period Shortening Factor[J].Architecture Technology,2010,41(1):49～51(in Chinese)
[4]建设部工程质量安全监督与行业发展司,中国建筑标准设计研究所.全国民用建筑工程设计技术措施-结构[M].北京:中国计划出版社,2003The Ministry of Construction Engineering Quality Supervision and Industry Development Division,China Institute of Building Standard Design&Research.National Technical Measures for Design of Civil Construction(Structure)[M].Beijing:China Planning Press,2003(in Chinese)
[5]王君.考虑填充墙作用的框架结构抗震性能分析[D].成都:西南交通大学,2010Wang Jun.The Assessment of Seismic Performance of Infilled Frame Structures[D].Chengdu:Southwest Jiaotong University,2010(in Chinese)
[6]龚思礼.建筑抗震设计手册(第二版)[M].北京:中国建筑工业出版社,2002Gong Si-li.Seismic Design Manual(Second Edition)[M].Beijing:China Architecture&Building Press,2002(in Chinese)
[7]高小旺,卜庆顺.多层钢筋混凝土框架房屋周期折减系数和层间弹性位移修正系数的取值[J].建筑结构,1993,23(2):42～46Gao Xiao-wang,Bu Qing-shun.The Cycle Reduction Factor of Multi-storey Reinforced Concrete Frame Building and the Correction Factor of Inter-layer Elastic Displacement[J].Building Structure,1993,23(2):42～46(in Chinese)
[8]甘11J16,横孔连锁混凝土空心砌块填充墙[S]Gan11J16,Walls Made by Cross-drilled Hole Concrete Hollow Blocks[S](in Chinese)
[9]罗福午,方鄂华,叶知满.混凝土结构及砌体结构[M]Luo Fu-wu,Fang E-hua,Ye Zhi-man.The Concrete Structure and Masonry Structure[M](in Chinese)
[10]GB50003-2011,砌体结构设计规范[S]GB50003-2011,Code for Design of Masonry Structures[S](in Chinese)
[11]GB50574-2010,墙体材料应用统一技术规范[S]GB50574-2010,Uniform Technical Code for Wall Materials Used in Buildings[S](in Chinese)
[12]JGJ/T17-2008,蒸压加气混凝土建筑应用技术规程[S]JGJ/T17-2008,Technical Specification for Application of Autoclaved Aerated Concrete[S](in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心