工字形截面叠合板式剪力墙损伤分析
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摘要
随着基于性能抗震设计理论的逐渐发展,利用损伤指标研究结构倒塌破坏越来越受到关注。文章对2个采用不同水平配箍率的工字形截面叠合板式剪力墙试件进行了低周反复加载试验,分析了各构件的破坏形态、延性、刚度、耗能等,计算了各构件分别采用基于刚度的损伤指标和基于位移及耗能的损伤指标,并与试验现象进行了对比。分析结果表明,基于位移及耗能的修正的Park-Ang模型能较好地反映试件在各破坏阶段的损伤程度;而基于刚度的Roufaiel模型计算简便,可用于其他模型的辅助评估。
With the development of performance-based seismic design,the study of the collapse of structure based on the damage index has been attracting more and more attention.In this paper,the low-cycle reversed loading tests of two I-shaped section superimposed slab shear walls with different stirrup ratio were conducted.The structural failure feature,ductility,stiffness and energy dissipation were analyzed.The damage indexes based on the stiffness and the displacement and energy dissipation were calculated respectively for the shear walls,and the results were compared with the experimental phenomena.The analysis results show that the damage degree of the shear walls in different damage phases can be expressed preferably by the improved Park-Ang model which is based on the displacement and energy dissipation,while the Roufaiel model based on the stiffness has the feature of simple calculation,and can be used as an auxiliary assessment for other models.
With the development of performance-based seismic design,the study of the collapse of structure based on the damage index has been attracting more and more attention.In this paper,the low-cycle reversed loading tests of two I-shaped section superimposed slab shear walls with different stirrup ratio were conducted.The structural failure feature,ductility,stiffness and energy dissipation were analyzed.The damage indexes based on the stiffness and the displacement and energy dissipation were calculated respectively for the shear walls,and the results were compared with the experimental phenomena.The analysis results show that the damage degree of the shear walls in different damage phases can be expressed preferably by the improved Park-Ang model which is based on the displacement and energy dissipation,while the Roufaiel model based on the stiffness has the feature of simple calculation,and can be used as an auxiliary assessment for other models.
引文
[1]应勇,蒋欢军,王斌,等.钢筋混凝土剪力墙构件双参数地震损伤模型研究[J].结构工程师,2010,26(5):61-65.
[2]黄选明,曹万林,吕西林.不同型式暗支撑短肢剪力墙抗震性能试验研究[J].地震工程与工程震动,2005,25(3):60-66.
[3]连星,叶献国,王德才,等.叠合板式剪力墙的抗震性能试验分析[J].合肥工业大学学报:自然科学版,2009,32(8):1219-1223.
[4]Roufaiel M S L,Meyer C.Analytical modeling of hystereticbehaviour of R/C frames[J].Journal of Structural Engi-neering,1987,113(3):429-444.
[5]Park Y J,Ang A H S.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of Structural Engineer-ing,1985,111(4):722-739.
[6]Park Y J,Ang A H S,Wen Y K.Seismic damage analysis ofreinforced concrete building[J].Journal of Structural Engi-neering,1985,111(4):740-757.
[7]Kunnath S K,Reinhorn A M,Park Y J.Analytical modelingof inelastic seismic response of R-C structures[J].Journalof Structural Engineering,1990,116(4):996-1017.
[8]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.
[2]黄选明,曹万林,吕西林.不同型式暗支撑短肢剪力墙抗震性能试验研究[J].地震工程与工程震动,2005,25(3):60-66.
[3]连星,叶献国,王德才,等.叠合板式剪力墙的抗震性能试验分析[J].合肥工业大学学报:自然科学版,2009,32(8):1219-1223.
[4]Roufaiel M S L,Meyer C.Analytical modeling of hystereticbehaviour of R/C frames[J].Journal of Structural Engi-neering,1987,113(3):429-444.
[5]Park Y J,Ang A H S.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of Structural Engineer-ing,1985,111(4):722-739.
[6]Park Y J,Ang A H S,Wen Y K.Seismic damage analysis ofreinforced concrete building[J].Journal of Structural Engi-neering,1985,111(4):740-757.
[7]Kunnath S K,Reinhorn A M,Park Y J.Analytical modelingof inelastic seismic response of R-C structures[J].Journalof Structural Engineering,1990,116(4):996-1017.
[8]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.
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