钢筋混凝土箱型柱低周反复荷载作用下的剪力滞试验研究
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摘要
为研究钢筋混凝土箱型柱在低周反复荷载下受到剪力滞的影响,通过对2根壁厚比不同的钢筋混凝土箱型柱进行低周往复加载试验,探究了受弯构件不同壁厚比对构件剪力滞的影响规律。进而得出结论:当纵桥向壁厚比(翼缘板厚度)越来越大时,翼板两端边缘剪力滞系数越来越小,翼板中间的剪力滞系数(负剪力滞)越来越大。
In order to study the influence of the shear lag on the reinforced concrete box columns under the low cyclic load, the paper tests the different walls of the reinforced concrete box column with different wall thickness ratios by low-cycle reciprocating loading test. The influence of the thickness ratio on the shear lag of the member leads to the following conclusion that when the longitudinal bridge to the wall thickness ratio(the thickness of the flange plate) is larger and larger, the shear lag coefficient at both ends of the wing is smaller and smaller, and the shear lag coefficient(negative shear lag) in the middle of the plate is getting larger and larger.
In order to study the influence of the shear lag on the reinforced concrete box columns under the low cyclic load, the paper tests the different walls of the reinforced concrete box column with different wall thickness ratios by low-cycle reciprocating loading test. The influence of the thickness ratio on the shear lag of the member leads to the following conclusion that when the longitudinal bridge to the wall thickness ratio(the thickness of the flange plate) is larger and larger, the shear lag coefficient at both ends of the wing is smaller and smaller, and the shear lag coefficient(negative shear lag) in the middle of the plate is getting larger and larger.
引文
[1]郭金琼,房贞政,郑振.箱型梁设计理论[M].北京:人民交通出版社,2008.应变片编号
[2] TAKAHASHI Y, IEMURA H. Inelastic seismic performance of RC tall piers with hollow section[C]//Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zealand, 2000.
[3] ZHANG Y H, LIN L X. Shear lag analysis of thin-walled box girders based on a new generalized displacement[J]. Engineering Structures, 2014,61:73-83.
[4] ZHOU S J. Finite beam element considering shear-lag effect in box girder[J]. Journal of Engineering Mechanics, 2010, 136(9):1115-1122.
[5]张士铎,邓小华,王文洲.箱型薄壁梁剪力滞效应[M].北京:人民交通出版社,1998.
[6]孙琴琴.薄壁曲线梁考虑剪力滞的非线性理论研究[D].广州:广东工业大学,2007.
[7]周世军,张家玮.剪力滞对箱梁弯曲刚度的影响分析[J].铁道学报,2010,32(4):92-95.
[8]中国建筑科学研究院.混凝土结构设计规范GB 50010-2010[S].北京:中国建筑工业出版社,2010.
[2] TAKAHASHI Y, IEMURA H. Inelastic seismic performance of RC tall piers with hollow section[C]//Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zealand, 2000.
[3] ZHANG Y H, LIN L X. Shear lag analysis of thin-walled box girders based on a new generalized displacement[J]. Engineering Structures, 2014,61:73-83.
[4] ZHOU S J. Finite beam element considering shear-lag effect in box girder[J]. Journal of Engineering Mechanics, 2010, 136(9):1115-1122.
[5]张士铎,邓小华,王文洲.箱型薄壁梁剪力滞效应[M].北京:人民交通出版社,1998.
[6]孙琴琴.薄壁曲线梁考虑剪力滞的非线性理论研究[D].广州:广东工业大学,2007.
[7]周世军,张家玮.剪力滞对箱梁弯曲刚度的影响分析[J].铁道学报,2010,32(4):92-95.
[8]中国建筑科学研究院.混凝土结构设计规范GB 50010-2010[S].北京:中国建筑工业出版社,2010.