高强混凝土框架结构延性性能数值模拟分析
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摘要
高强混凝土具有强度高、早强及变形小的优点广泛应用于土木工程结构。然而,在地震地区建筑结构需有较大的变形能力来耗能,其延性差的特点妨碍它更广泛的应用。通过合理地配置钢筋能够有效地提高结构的延性。本文应用DRAIN-2DX程序对一十二层双跨高强混凝土框架结构进行数值模拟分析,分析结果表明它能够很好的模拟此类结构的破坏过程和耗能能力。试验结果表明,此类结构具有较好的延性和耗能能力,抗震性能较好,所提出的方法能够用于地震区高强混凝土框架结构体系之中。
High-strength concrete has been widely used in civil structures for advantages of higher-strength,earlier curing strength and smaller deformation in applications.However,relatively weak ductility in structures in seismic zones prevented it from further application.The ductility of the structure can be improved by reinforcing reasonably rebars in correct details.A high strength RC frame model with twelve floors and two bays is numerically analyzed by using DRAIN-2DX program.It was shown that this worked fairly well in simulation of the process of structural damage and energy dissipation capacity.It also showed that this kind of frame structure has good ductility and dissipation capacity as well as great seismic performance.The proposed method can be applied in high-strength concrete structures in seismic zone.
High-strength concrete has been widely used in civil structures for advantages of higher-strength,earlier curing strength and smaller deformation in applications.However,relatively weak ductility in structures in seismic zones prevented it from further application.The ductility of the structure can be improved by reinforcing reasonably rebars in correct details.A high strength RC frame model with twelve floors and two bays is numerically analyzed by using DRAIN-2DX program.It was shown that this worked fairly well in simulation of the process of structural damage and energy dissipation capacity.It also showed that this kind of frame structure has good ductility and dissipation capacity as well as great seismic performance.The proposed method can be applied in high-strength concrete structures in seismic zone.
引文
[1]王丽娟.高强钢筋高强混凝土框架结构非线性模型研究[J].山西建筑,2007,33(12):60-62.WANG Lijuan.Research on nonlinear mechanical of highstrength reinforced concrete RC frame[J].Shanxi Architec-ture,2007,33(12):60-62.
[2]陈滔,黄宗明.钢筋混凝土框架非弹性地震反应分析模型研究进展[J].世界地震工程,2002,18(1):91-97.CHEN Tao,HUANG Zongming.A review of inelastic dynamicanalysis models of reinforced concrete frames under earthquakeground motions[J].World Information on Earthquake Engi-neering,2002,18(1):91-97.(in Chinese)
[3]林建煌.从中日抗震设计方法的不同,浅谈钢筋混凝土结构的延性设计[J].福建建筑,2011,156(6):52-54.LIN Jianhuang.Ductility design of reinforced concrete structurewith comparing Sino-Japan aseismatic design[J].Fujian Archi-tecture&Construction,2011,156(6):52-54.
[4]蔡健,周靖,方小丹.钢筋混凝土框架抗震位移延性系数研究[J].工程抗震与加固改造,2005,27(3):2-6.CAI Jian,ZHOU Jing,FANG Xiaodan.Study on seismic Dis-placement Ductility Factor of Reinforced Concrete Frame Struc-ture[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):2-6.(in Chinese)
[5]王克海,李茜,韦韩.国内外延性抗震设计的比较[J].地震工程与工程振动,2006,26(3):70-73.WANG Kehai,LI Qian,WEI Han.Comparing overseas and in-land specifications for ductility seismic design[J].EarthquakeEngineering and Engineering Vibration,2006,26(3):70-73.(inChinese)
[6]罗文斌,钱稼茹.特征延性系数谱及RC框架的目标位移[J].建筑结构,2004,34(10):24-26.
[7]于洋.延性设计对框架结构抗震能力的改善[J].科学技术与工程,2009,24(9):7551-7553.YU Yang.The improvement to sismic capacity of the framestructure by means of ductility design[J].Science Techno logyand Engineering,2009,24(9):7551-7553.
[2]陈滔,黄宗明.钢筋混凝土框架非弹性地震反应分析模型研究进展[J].世界地震工程,2002,18(1):91-97.CHEN Tao,HUANG Zongming.A review of inelastic dynamicanalysis models of reinforced concrete frames under earthquakeground motions[J].World Information on Earthquake Engi-neering,2002,18(1):91-97.(in Chinese)
[3]林建煌.从中日抗震设计方法的不同,浅谈钢筋混凝土结构的延性设计[J].福建建筑,2011,156(6):52-54.LIN Jianhuang.Ductility design of reinforced concrete structurewith comparing Sino-Japan aseismatic design[J].Fujian Archi-tecture&Construction,2011,156(6):52-54.
[4]蔡健,周靖,方小丹.钢筋混凝土框架抗震位移延性系数研究[J].工程抗震与加固改造,2005,27(3):2-6.CAI Jian,ZHOU Jing,FANG Xiaodan.Study on seismic Dis-placement Ductility Factor of Reinforced Concrete Frame Struc-ture[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):2-6.(in Chinese)
[5]王克海,李茜,韦韩.国内外延性抗震设计的比较[J].地震工程与工程振动,2006,26(3):70-73.WANG Kehai,LI Qian,WEI Han.Comparing overseas and in-land specifications for ductility seismic design[J].EarthquakeEngineering and Engineering Vibration,2006,26(3):70-73.(inChinese)
[6]罗文斌,钱稼茹.特征延性系数谱及RC框架的目标位移[J].建筑结构,2004,34(10):24-26.
[7]于洋.延性设计对框架结构抗震能力的改善[J].科学技术与工程,2009,24(9):7551-7553.YU Yang.The improvement to sismic capacity of the framestructure by means of ductility design[J].Science Techno logyand Engineering,2009,24(9):7551-7553.
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