- 摘 要
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(中國(guó)鐵路設(shè)計(jì)集團(tuán)有限公司, 天津 300308)
[摘要]為了研究帶斜筋單排配筋混凝土低矮剪力墻的抗震性能,首先利用ABAQUS有限元軟件建立了帶斜筋單排配筋混凝土低矮剪力墻的彈塑性有限元模型,驗(yàn)證了模型的正確性;隨后,對(duì)9個(gè)帶斜筋的剪力墻進(jìn)行了拓展分析,討論了墻體配筋率、邊緣構(gòu)件配筋及軸壓比對(duì)帶斜筋單排配筋混凝土低矮剪力墻抗震性能的影響。結(jié)果表明:墻體配筋率的增加可提高承載力,斜筋呈扇形布置墻體延性較好;邊緣構(gòu)造箍筋間距越大,承載力越低,且峰值荷載后承載力下降越明顯,延性較差;隨著軸壓比的增大,斜筋對(duì)于剪力墻延性的提高作用越明顯。
[關(guān)鍵詞]單排配筋; 斜筋; 低矮剪力墻; 有限元模擬; 設(shè)計(jì)方法
中圖分類號(hào):TU375文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2020)03-0089-07
Finite element simulation of low-rise concrete shear wall with single row of steel bars and inclined reinforcements
Li Wandi
(China Railway Design Corporation, Tianjin 300308, China)
Abstract:In order to research seismic performance of low-rise concrete shear wall with single row of steel bars and inclined reinforcements, firstly the elastoplastic finite element models of low-rise concrete shear wall single row of steel bars and inclined reinforcements were established by utilizing finite element software ABAQUS. Accuracy of the models was verified. Then, 9 shear walls with inclined reinforcements were analyzed, and the influences of reinforcement ratio of wall, edge component reinforcement and axial compression ratio on the seismic performance of low-rise concrete shear wall with single row of steel bars and inclined reinforcements were discussed. The results show that the increase of shear wall reinforcement ratio can improve the bearing capacity. Ductility is better when the inclined reinforcements are fan-shaped arranged. The larger the spacing of the edge component structural stirrups is, the lower the bearing capacity is, the more obvious the decline of the bearing capacity after the peak load is, and the worse the ductility is. With the increase of the axial compression ratio, the effect of the inclined reinforcements on the increase effects of the ductility of the shear wall is more obviously.
Keywords:single row of steel bars; inclined reinforcement; low-rise shear wall; finite element simulation; design method
*國(guó)家自然科學(xué)基金項(xiàng)目(51408378),河北省自然科學(xué)基金資助項(xiàng)目(E2015403018)。
作者簡(jiǎn)介:李琬荻,碩士,工程師,Email:liwandi_ok@126.com。
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