锈蚀钢框架地震损伤模型研究
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摘要
为了合理地描述锈蚀钢框架的地震破坏形式及不同程度的锈蚀对钢框架抗震性能的影响,在欧进萍等人提出的钢结构地震损伤模型的基础上建立锈蚀钢结构地震损伤模型。为确定锈蚀钢结构地震损伤模型参数,分别给出锈蚀梁、柱构件双线性恢复力模型特征点的计算方法,并通过弹塑性时程分析获得损伤模型中的其他参数数值。利用加权系数法合理地考虑锈蚀构件损伤向整体结构损伤迁移转化的多尺度效应,建立锈蚀钢框架整体地震损伤模型。结合该损伤模型的特点,定义了对应结构不同破坏等级的损伤指数范围。最后,对5榀具有不同锈蚀率的平面钢框架结构进行了弹塑性时程分析,结果表明:所建的损伤模型能在一定程度上反映钢框架结构随锈蚀程度的退化规律。
In order to reasonably describe the seismic damage forms of a corroded steel frame and the effects of different levels of corrosion on the aseismic performance of steel frames,on the basis of the seismic damage model of steel structures proposed by Ou Jinping,et al,the seismic damage model of a corroded steel frame was built. To determine the seismic damage model parameters of a corroded steel structure,the calculation methods of the bilinear restoring force model feature points of corroded beams and columns member were presented,and other parameter values were obtained with elastic-plastic time history analysis. Using the weighted partial coefficients method,the multi-scale effect of migration and conversion from member damage to structure damage was considered,the overall seismic damage model of a corroded steel frame was established. Combined with the characteristics of the damage model proposed here,the corresponding structural damage index ranges with different damage levels were defined. Finally,the elastic-plastic time history analyses were performed for 5 specimens of flat steel frame structures with different corrosion rates,the results showed that the damage model proposed here can reflect the degradation law of steel frame structures with variation of corrosion level in a certain extent.
引文
[1]Park Y J,Ang A H S.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,ASCE,1985,111(4):722-739.
    [2]欧进萍,牛荻涛,王光远.多层非线性抗震钢结构的模糊动力可靠性分析与设计[J].地震工程与工程振动,1990,10(4):27-37.OU Jin-ping,NIU Di-tao,WANG Guang-yuan.Fuzzy dynamical reliability analysis and design of multi-storey nonlinear seismic steel structures[J].Earthquake Engineering and Engineering Vibration,1990,10(4):27-37.
    [3]史炜洲.钢材腐蚀对住宅钢结构性能影响的研究与评估[D].上海:同济大学,2009:1-32.
    [4]Lee H S,Nonuchi T,Tomosawa F.FEM analysis for structure performance of deteriorated RC structures due to rebar corrosion[C]//Proceeding of the International Concrete under Several Conditions Proceeding of the 2nd International Conference on Concrete Under Severe Conditions.Tromso,Norway:E&FN Spon,1998:327-336.
    [5]贲庆国.钢框架结构地震作用下累积损伤分析及试验研究[D].南京:南京工业大学,2003.
    [6]胡晓琦.钢框架结构地震损伤可靠度分析与抗震性能设计研究[D].哈尔滨:哈尔滨工业大学,2005.
    [7]王斌.型钢高强高性能混凝土构件及其框架结构的地震损伤研究[D].西安:西安建筑科技大学,2010.
    [8]郑山锁,侯丕吉,张宏仁,等.SRHSHPC框架结构地震损伤试验研究[J].工程力学,2012,29(7):84-92.ZHENG Shan-suo,HOU Pi-ji,ZHANG Hong-ren,et al.Experimental study on seismic damage of SRHSHPC frame structure[J].Engineering Mechanics,2012,29(7):84-92.
    [9]欧进萍,牛荻涛,王光远.非线性钢筋混凝土抗震结构的损失评估与优化设计[J].土木工程学报,1993,26(5):25-29.OU Jin-ping,NIU Di-tao,WANG Guang-yuan.Damage evaluation and optimize design of nonlinear seismic reinforced concrete structures[J].China Civil Engineering Journal,1993,26(5):25-29.
    [10]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44-54.NIU Di-tao,REN Li-jie.A modified seismic damage model with double variables for reinforced concrete structures[J].Earthquake Engineering and Engineering Vibration,1996,16(4):44-54.
    [11]江近仁,孙景江。砖结构的地震破坏模型[J].地震工程与工程振动1987,7(1):20-34.JIANG Jin-ren,SUN Jing-jiang.Seismic damage model for brick structure[J].Earthquake Engineering and Engineering Vibration,1987,7(1):20-34.

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