[1]李正发,彭 星,梁岩涛,等.锥形高强中空夹层薄壁钢管混凝土构件的弯扭性能研究[J].西安建筑科技大学学报(自然科学版),2022,54(04):551-560605.[doi:10.15986/j.1006-7930.2022.04.010]
　LI Zhengfa,PENG Xing,LIANG Yantao,et al.Study on bending and torsional performance of tapered high strength thin-walled concrete-filled double skin steel tubular members[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(04):551-560605.[doi:10.15986/j.1006-7930.2022.04.010]
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锥形高强中空夹层薄壁钢管混凝土构件的弯扭性能研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年04期
页码:
551-560605
栏目:
出版日期:
2022-08-28

文章信息/Info

Title:
Study on bending and torsional performance of tapered high strength thin-walled concrete-filled double skin steel tubular members
文章编号:
1006-7930(2022)04-0551-10
作者:
李正发1; 彭 星2; 梁岩涛1; 李博凡2; 黄林柯1; 王先铁2
(1.国网甘肃省电力公司建设分公司,甘肃 兰州 730050; 2.西安建筑科技大学 土木工程学院,陕西 西安 710055)
Author(s):
LI Zhengfa1;  PENG Xing2;  LIANG Yantao1;  LI Bofan2;  HUANG Linke1;  WANG Xiantie2
(1.State Grid Gansu Power Construction Company, Lanzhou 730050, China; 2.School of Civil Engineering, Xi'an Univ. of Arch.& Tech., Xi'an 710055, China)
关键词:
高强材料;  中空夹层钢管混凝土构件;  薄壁;  大空心率;  弯扭性能
Keywords:
high strength material;  concrete-filled double skin steel tubular members;  thin-walled;  large hollow ratio;  bending and torsional performance
分类号:
TU398+.9
DOI:
10.15986/j.1006-7930.2022.04.010
文献标志码:
A
摘要:
采用有限元软件ABAQUS对内、外钢管和加劲肋采用Q690钢材,混凝土采用C120高强混凝土的锥形高强中空夹层薄壁钢管混凝土构件弯扭性能进行数值模拟分析,得到了构件的扭矩-转角关系曲线,分析了构件的破坏形态.研究了不同参数对锥形高强中空夹层薄壁钢管混凝土构件弯扭受力性能的影响.结果表明:弯扭比对构件刚度影响较小,但对构件的破坏形态影响较大.随着弯扭比增大,构件的抗扭承载力降低,抗弯承载力提高,抗扭延性降低,构件更早发生断裂.空心率、锥度、内外钢管径厚比对锥形高强中空夹层薄壁钢管混凝土弯扭构件的抗扭承载力影响较为显著,混凝土强度和内钢管强度对弯扭构件的抗扭承载力影响较小.
Abstract:
The finite element software ABAQUS was used to simulate the bending and torsional performance of tapered high-strength thin-walled concrete-filled double skin steel tubular(CFDST)members, of which inner and outer steel tubes and stiffeners were made of Q690 steel, and concrete was made of C120 high-strength concrete. The torsion-rotation angle curve was obtained, the failure pattern of the tapered high strength thin-walled CFDST member was analyzed, and the influence of hollow ratio, taper, diameter-to-thickness ratios of the outer and inner steel tube, strength of the concrete and the inner tube on the bending and torsional behaviour of the tapered high strength thin-walled CFDST members was studied. The results show that the effect of the ratio of moment to torsion on the stiffness of the member is minor, but has considerable effect on the failure pattern. With the increase of the ratio of moment to torsion, the ultimate torsional capacity and ductility of the members decrease, and the ultimate bending capacity increase. The hollow ratio, taper and the diameter-to-thickness ratio of the inner and outer steel tube have considerable effect on the ultimate torsional capacity, and the strength of concrete and the strength of inner steel tube have little effect on the torsional bearing capacity.

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备注/Memo

备注/Memo:
收稿日期:2022-07-09修改稿日期:2022-09-07
基金项目:国家自然科学基金资助项目(51678474)
第一作者:李正发(1988—),男,硕士,工程师,从事输变电工程设计研究.E-mail:304550629@qq.com. 通信作者:王先铁(1979—),男,博士,教授,从事钢结构与钢管混凝土结构研究.E-mail:wangxiantie@163.com
更新日期/Last Update: 2022-08-28