预应力型钢混凝土柱偏心受拉性能试验研究
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摘要
为研究预应力型钢混凝土构件在偏心受拉作用下的受力性能,以预应力筋根数、预应力度、纵筋配筋率、型钢配钢量和偏心距为主要设计参数,对15个偏心受拉柱进行了单调加载试验。试验中观察了预应力型钢混凝土柱在偏心受拉作用下的受力过程和破坏形态,得到荷载-位移曲线、荷载-应变曲线、承载力、侧向变形以及裂缝发展情况等。研究结果表明:增加柱中预应力筋根数与型钢配钢量,提高预应力度、纵筋配筋率,减小偏心距等可使预应力型钢混凝土柱偏心受拉承载能力提高,且偏心距是影响预应力型钢混凝土柱偏心受拉承载能力的主要因素。通过施加预应力筋,可以有效控制裂缝的产生与扩展。根据理论与试验结果分析,给出了预应力型钢混凝土偏心受拉构件的承载力算式,计算值与试验值吻合较好。
In order to study the mechanical properties of prestressed steel reinforced concrete members under the action of eccentric tension,monotonic loading tests were carried out on 15 specimens. The number of prestressed steel tendons,prestressing degree,ratio of longitudinal reinforcement,the amount of steel and eccentricity were design parameters. The load-displacement curve, load-strain curve, bearing capacity, lateral deformation and crack development etc. were obtained by observing stress process and failure modes of prestressed steel reinforced concrete members under eccentric tension. The results show that the eccentric tensile capacity of prestressed steel reinforced concrete members can be improved by increasing the number of prestressed tendons and the amount of steel,improving the prestressing degree and longitudinal reinforcement ratio as well as reducing the eccentricity etc. Eccentricity is the main factor affecting the eccentric tension bearing capacity of prestressed steel reinforced concrete members. The generation and expansion of cracks can be effectively controlled by applying prestressed reinforcement. In accordance with the analysis of theoretical and experimental results,the calculation formula of bearing capacity of eccentrically pulled members of prestressed steel reinforced concrete was proposed. The calculated results agree well with test results.
In order to study the mechanical properties of prestressed steel reinforced concrete members under the action of eccentric tension,monotonic loading tests were carried out on 15 specimens. The number of prestressed steel tendons,prestressing degree,ratio of longitudinal reinforcement,the amount of steel and eccentricity were design parameters. The load-displacement curve, load-strain curve, bearing capacity, lateral deformation and crack development etc. were obtained by observing stress process and failure modes of prestressed steel reinforced concrete members under eccentric tension. The results show that the eccentric tensile capacity of prestressed steel reinforced concrete members can be improved by increasing the number of prestressed tendons and the amount of steel,improving the prestressing degree and longitudinal reinforcement ratio as well as reducing the eccentricity etc. Eccentricity is the main factor affecting the eccentric tension bearing capacity of prestressed steel reinforced concrete members. The generation and expansion of cracks can be effectively controlled by applying prestressed reinforcement. In accordance with the analysis of theoretical and experimental results,the calculation formula of bearing capacity of eccentrically pulled members of prestressed steel reinforced concrete was proposed. The calculated results agree well with test results.
引文
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[11]伊藤倫夫,大庭秀治,田中秀宜,貞末和史,南宏一.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その5)[C]//日本建築学会2000年度大会学術講演梗概集.東京:日本建築学会,2000:11411142.(ITOU Michio,OHBA Shuji,TANAKAHidenori,SADASUE Kazushi,MINAMI Koichi.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 5[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,2000.Tokyo:Architectural Institute of Japan,2000:11411142.(in Japanese))
[12]藤原大英,貞末和史,伊藤倫夫,田中秀宣,南宏一.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その14)[C]//日本建築学会2004年度大会学術講演梗概集.東京:日本建築学会,2004:12191220.(FUJIWARA Daiei,SADASUE Kazushi,ITOU Michio,TANAKA Hidenori,MINAMI Koichi.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 14[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,2004.Tokyo:Architectural Institute of Japan,2004:12191220.(in Japanese))
[13]唐锦蜀,韩文涛,张塑,等.偏心受拉型钢-混凝土组合梁的受力性能试验研究[J].工业建筑,2015,45(8):170-174.(TANG Jinshu,HAN Wentao,ZHANGSu,et al.Experimental study of mechanical behaviors of SRC beams under eccentric tension[J].Industrial Construction,2015,45(8):170-174.(in Chinese))
[14]傅剑平,陈茜,张川,等.工字型钢混凝土偏心受拉构件正截面承载力计算[J].建筑结构学报,2017,38(2):90-98.(FU Jianping,CHEN Xi,ZHANG Chuan,et al.Calculation for ultimate flexural capacity of eccentrically tensioned SRC members with embededⅠshaped steel,2017,38(2):90-98.(in Chinese))
[15]傅传国,李玉莹,孙晓波,等.预应力及非预应力型钢混凝土框架受力及抗震性能试验研究[J].建筑结构学报,2010,31(8):15-21.(FU Chuanguo,LIYuying,SUN Xiaobo,et al.Experimental study onseismic performance of prestressed and nonprestressedsteel reinforced concrete frames[J].Journal of Building Structures,2010,31(8):15-21.(in Chinese))
[2]Kang T,Kim W,Kwak Y.Shear testing of steel fiber reinforced lightweight concrete beams without web reinforcement[J].ACI Structural Journal,2011,108(5):553-561.
[3]张向冈,陈宗平,郑述芳,等.型钢混凝土T形柱受剪性能及承载力计算[J].建筑结构,2013,43(1):54-58.(ZHANG Xianggang,CHEN Zongping,ZHENGShufang,et al.Research on shear performance and bearing capacity calculation method of T-shaped steel reinforced concrete columns[J].Building Structure,2013,43(1):54-58.(in Chinese))
[4]刘祖强,薛建阳,赵鸿铁.型钢混凝土异形柱框架滞回性能分析[J].工程力学,2016,33(7):73-83.(LIUZuqiang,XUE Jianyang,ZHAO Hongtie.Research on shear performance and bearing capacity calculation method of T-shaped steel reinforced concrete columns[J].Engineering Mechanics,2016,33(7):73-83.(in Chinese))
[5]郑文忠,王琨.型钢混凝土梁-角钢混凝土柱框架抗震性能试验研究[J].土木工程学报,2011,44(3):49-60.(ZHENG Wenzhong,WANG Kun.Study of seismic performance of frame structures of steel reinforced concrete beams and angle-steel concrete columns[J].China Civil Engineering Journal,2011,44(3):49-60.(in Chinese))
[6]日本建築学会.鉄骨鉄筋コンクリート構造計算標準·同解説[S].東京:日本建築学会,2001.(Architectural Institute of Japan.Standard for steel reinforced concrete structures and commentary[S].Tokyo:Architectural Institute of Japan,2001.(in Japanese))
[7]组合结构技术规范:JGJ 138-2012[S].北京:中国建筑工业出版社,2012.(Technical code for composite structures:JGJ 138-2012[S].Beijing:China Architecture&Building Press,2012.(in Chinese))
[8]称原良一,南宏一.兵庫県南部地震におけるSRC造建物の柱脚部の被害分析[J].日本建築学会構造系論文集,2000(11):135140(SHOHARA Ryoichi,MINAMI Koichi.Damage of the column bases of steel encased reinforced concrete buildings due to 1995Hyogo-Ken Nan buearthquake[J].Journal of Structural and Construction Engineering,2000(11):135140.(in Japanese))
[9]南宏一,貞末和史,伊藤倫夫,中野建蔵.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その1)[C]//日本建築学1999年度大会学術講演梗概集.東京:日本建築学会,1999:11611162.(MINAMIKoichi,SADASUE Kazushi,ITOU Michio,MAKANOKenzo.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 1[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,1999.Tokyo:Architectural Institute of Japan,1999:11611162.(in Japanese))
[10]大庭秀治,伊藤倫夫,田中秀宜,貞末和史,南宏一.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その4)[C]//日本建築学会2000年度大会学術講演梗概集.東京:日本建築学会,2000:1139791140.(OHBA Shuji,ITOU Michio,TANAKAHidenori,SADASUE Kazushi,MINAMI Koichi.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 4[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,2000.Tokyo:Architectural Institute of Japan,2000:11391140.(in Japanese))
[11]伊藤倫夫,大庭秀治,田中秀宜,貞末和史,南宏一.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その5)[C]//日本建築学会2000年度大会学術講演梗概集.東京:日本建築学会,2000:11411142.(ITOU Michio,OHBA Shuji,TANAKAHidenori,SADASUE Kazushi,MINAMI Koichi.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 5[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,2000.Tokyo:Architectural Institute of Japan,2000:11411142.(in Japanese))
[12]藤原大英,貞末和史,伊藤倫夫,田中秀宣,南宏一.引張力を受ける鉄骨鉄筋コンクリート構造非埋め込み形柱脚の終局耐力と変形性能に関する実験的研究(その14)[C]//日本建築学会2004年度大会学術講演梗概集.東京:日本建築学会,2004:12191220.(FUJIWARA Daiei,SADASUE Kazushi,ITOU Michio,TANAKA Hidenori,MINAMI Koichi.Ultimate strength and ductility of bare type column base connection in SRC structures under high axial tension:part 14[C]//Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan,2004.Tokyo:Architectural Institute of Japan,2004:12191220.(in Japanese))
[13]唐锦蜀,韩文涛,张塑,等.偏心受拉型钢-混凝土组合梁的受力性能试验研究[J].工业建筑,2015,45(8):170-174.(TANG Jinshu,HAN Wentao,ZHANGSu,et al.Experimental study of mechanical behaviors of SRC beams under eccentric tension[J].Industrial Construction,2015,45(8):170-174.(in Chinese))
[14]傅剑平,陈茜,张川,等.工字型钢混凝土偏心受拉构件正截面承载力计算[J].建筑结构学报,2017,38(2):90-98.(FU Jianping,CHEN Xi,ZHANG Chuan,et al.Calculation for ultimate flexural capacity of eccentrically tensioned SRC members with embededⅠshaped steel,2017,38(2):90-98.(in Chinese))
[15]傅传国,李玉莹,孙晓波,等.预应力及非预应力型钢混凝土框架受力及抗震性能试验研究[J].建筑结构学报,2010,31(8):15-21.(FU Chuanguo,LIYuying,SUN Xiaobo,et al.Experimental study onseismic performance of prestressed and nonprestressedsteel reinforced concrete frames[J].Journal of Building Structures,2010,31(8):15-21.(in Chinese))