钢筋混凝土框架顶层T型中节点抗剪强度计算模型
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摘要
通过4个框架顶层T型中节点在低周反复循环荷载作用下的试验,调查了节点裂缝分布特征、抗剪强度、变形性能等抗震性能指标.结果表明:由于梁纵筋在节点内的黏结劣化以及节点箍筋约束效果的下降,T型节点抗剪强度与形状相同的框架中间层├型边节点相比平均降低15%以上.本研究对Hwang的STURT-TRUSS计算模型中的斜压杆机构高度、节点箍筋有效面积等关键解析参数进行了整合,建立了适合于T型节点抗剪强度的计算模型.计算结果与试验结果吻合.
Based on the experiment of four RC T-shaped interior joints on the top story of a building frame under statically cyclic loading,the indexes of the earthquake-resistant performance of the joints such as crack patterns,shear strength,deformation features etc.were investigated.The experimental results showed that the shear strength of T-shaped joints is 15% less than that of extrior joints due to the affect of beam bar bond deterioration in the joints and confined effect deterioration from joint shear bars.Based on the test data,the key analysis parameters for STURT-TRUSS model proposed by Hwang,such as the height of sturt and the effective areas of joint shear bars were improved,the caculated model for evacuating the shear strength of T-shaped joints was proposed.The results from the analysis agree well with the experimental data.
Based on the experiment of four RC T-shaped interior joints on the top story of a building frame under statically cyclic loading,the indexes of the earthquake-resistant performance of the joints such as crack patterns,shear strength,deformation features etc.were investigated.The experimental results showed that the shear strength of T-shaped joints is 15% less than that of extrior joints due to the affect of beam bar bond deterioration in the joints and confined effect deterioration from joint shear bars.Based on the test data,the key analysis parameters for STURT-TRUSS model proposed by Hwang,such as the height of sturt and the effective areas of joint shear bars were improved,the caculated model for evacuating the shear strength of T-shaped joints was proposed.The results from the analysis agree well with the experimental data.
引文
[1]日本建築学会.鉄筋コンクリ一ト造建物の終局强度型設計指針.同解説[S].东京:丸善株式会社,1990.
[2]日本建筑学会.鉄筋コンクリ一ト造建物の靭性保証型耐震設計指針.同解説[S].东京:丸善株式会社,1999.
[3]日本建築センタ一.阪神.淡路大震災における建築物の被害状況調査を踏まえた建築物耐震基準.設計の解説[M].东京:丸善株式会社,1995:165-234.
[4]日本国土技術政策総合研究所建築研究部.福岡県西方沖地震地被害調査報告[M].东京:丸善株式会社,2005:72-86.
[5]塩屋俊幸,中澤春生,長澤保纪,高岸正章,前之園司.Tヘッドバノ開発[J].コンクリ一ト工学年次論文報告集,2000,22(3):1291-1296.
[6]青田晃治,渡邊朋之,成瀬忠,森本敏幸.最上階柱梁接合部におけるプレ一ト定着工法に関する研究[J].コンクリ?ト工学年次論文報告集,2005,23(3):391-396.
[7]田畑卓,西原寛.RC造ト.T.L形柱梁接合部のせん断及び定着性状[J].コンクリ一ト工学年次論文報告集,2006,23(3):373-378.
[8]竹内博幸,中村一彦,早川邦夫.円形定着板により機械式定着されたト形接合部に関する実験的研究[J].コンクリ?ト工学年次論文報告集,2008,19(2):1067-1073.
[9]吴庆云.钢筋混凝土框架顶层中节点抗震性能试验研究[D].重庆:重庆建筑大学土木工程学院,1991.WU Qing-yun.Experimental study on earthquake resistant performance of the interior top-of-column joints of R.C frame[D].Chongqing:College of Architecture and Civil Engineering,Chongqing Jianzhu University,1991.(in Chinese)
[10]黄文彬.钢筋混凝土框架中塑性饺位于柱端的顶层中节点的抗震性能试验研究[D].重庆:重庆建筑大学土木工程学院,1994.HUANG Wen-bin.Experimental study on earthquake resistant performance of the interior top-of-column joints of reinforcedconcrete frame including the column-hinging mechanism[D].Chongqing:College of Architecture and Civil Engineering,Chongqing Jianzhu University,1994.(in Chinese)
[11]焦心亮,张连德,卫云亭.钢筋混凝土框架顶层中节点的非线性有限元分析[J].建筑结构学报,1995,16(5):40-47.JIAO Xin-liang,ZHANG Lian-de,WEI Yun-ting.Inelastic finite element analysis of interior top-of-column joints ofreinforced concrete frame[J].Journal of Building Structures,1995,16(5):40-47.(in Chinese)
[12]中华人民共和国建设部.GB 50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[13]HWANG S J,LEE HJ.Analytical model for predicting shear strengths of exterior reinforced concrete beam-column joints forseismic resistance[J].ACI Structural Journal,1999,18(2):846-857.
[14]SCHAFER,K.Strut-and-tie models for design of structural concrete[R].Notes of Workshop,National Cheng KungUniversity,Tainan,Taiwan.,1996,2:140.
[15]崔建宇.鉄筋コンクリ?ト柱.梁接合部の耐震性能に関する研究[D].京都:日本京都大学土木工程系,2003.
[16]PAULAY T,PRIESTLEY M J N.Seismic design of reinforced concrete and masonry buildings[C]∥John Wiley and Sons,New York:John Wiley and Sons,1992:744.
[17]PANG X B,HSU TT.Fixed angle softened truss model for reinforced concrete[J].ACI Structural Journal,1996,93(2):197-207.
[2]日本建筑学会.鉄筋コンクリ一ト造建物の靭性保証型耐震設計指針.同解説[S].东京:丸善株式会社,1999.
[3]日本建築センタ一.阪神.淡路大震災における建築物の被害状況調査を踏まえた建築物耐震基準.設計の解説[M].东京:丸善株式会社,1995:165-234.
[4]日本国土技術政策総合研究所建築研究部.福岡県西方沖地震地被害調査報告[M].东京:丸善株式会社,2005:72-86.
[5]塩屋俊幸,中澤春生,長澤保纪,高岸正章,前之園司.Tヘッドバノ開発[J].コンクリ一ト工学年次論文報告集,2000,22(3):1291-1296.
[6]青田晃治,渡邊朋之,成瀬忠,森本敏幸.最上階柱梁接合部におけるプレ一ト定着工法に関する研究[J].コンクリ?ト工学年次論文報告集,2005,23(3):391-396.
[7]田畑卓,西原寛.RC造ト.T.L形柱梁接合部のせん断及び定着性状[J].コンクリ一ト工学年次論文報告集,2006,23(3):373-378.
[8]竹内博幸,中村一彦,早川邦夫.円形定着板により機械式定着されたト形接合部に関する実験的研究[J].コンクリ?ト工学年次論文報告集,2008,19(2):1067-1073.
[9]吴庆云.钢筋混凝土框架顶层中节点抗震性能试验研究[D].重庆:重庆建筑大学土木工程学院,1991.WU Qing-yun.Experimental study on earthquake resistant performance of the interior top-of-column joints of R.C frame[D].Chongqing:College of Architecture and Civil Engineering,Chongqing Jianzhu University,1991.(in Chinese)
[10]黄文彬.钢筋混凝土框架中塑性饺位于柱端的顶层中节点的抗震性能试验研究[D].重庆:重庆建筑大学土木工程学院,1994.HUANG Wen-bin.Experimental study on earthquake resistant performance of the interior top-of-column joints of reinforcedconcrete frame including the column-hinging mechanism[D].Chongqing:College of Architecture and Civil Engineering,Chongqing Jianzhu University,1994.(in Chinese)
[11]焦心亮,张连德,卫云亭.钢筋混凝土框架顶层中节点的非线性有限元分析[J].建筑结构学报,1995,16(5):40-47.JIAO Xin-liang,ZHANG Lian-de,WEI Yun-ting.Inelastic finite element analysis of interior top-of-column joints ofreinforced concrete frame[J].Journal of Building Structures,1995,16(5):40-47.(in Chinese)
[12]中华人民共和国建设部.GB 50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[13]HWANG S J,LEE HJ.Analytical model for predicting shear strengths of exterior reinforced concrete beam-column joints forseismic resistance[J].ACI Structural Journal,1999,18(2):846-857.
[14]SCHAFER,K.Strut-and-tie models for design of structural concrete[R].Notes of Workshop,National Cheng KungUniversity,Tainan,Taiwan.,1996,2:140.
[15]崔建宇.鉄筋コンクリ?ト柱.梁接合部の耐震性能に関する研究[D].京都:日本京都大学土木工程系,2003.
[16]PAULAY T,PRIESTLEY M J N.Seismic design of reinforced concrete and masonry buildings[C]∥John Wiley and Sons,New York:John Wiley and Sons,1992:744.
[17]PANG X B,HSU TT.Fixed angle softened truss model for reinforced concrete[J].ACI Structural Journal,1996,93(2):197-207.
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