Finite element analysis of double-web-type buckling-restrained brace of low yield point steel

被引：0

作者：

Wang, Jiaojiao ^{[1
]}

Shi, Yongjiu ^{[1
]}

Wang, Yuanqing ^{[1
]}

Toshio, Makino ^{[2
]}

Qi, Xue ^{[2
]}

机构：

[1] Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Beijing

[2] Tokyo Office, Sumikin Kansai Industries Co. Ltd., Tokyo

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2014年 / 47卷

关键词：

Buckling-restrained brace; Low yield point; Numerical simulation; Parametric study;

D O I：

10.11784/tdxbz201404030

中图分类号：

学科分类号：

摘要：

Double-web-type buckling-restrained brace(BRB)with low yield point steel could avoid the problem of concrete cracking. This simple form of brace starts to dissipate earthquake energy very early due to the low yield point steel as the steel core. Existing specifications are for concrete filled steel tube BRBs or tubular all-steel BRBs. They may not be suitable for double-web-type BRBs. In order to obtain specialized research results for this kind of braces, the finite element analysis(FEA)is made in this paper. FEA results are compared to test results and then parametric study is conducted. The results show that, the finite element method can simulate the performance of the BRB accurately especially when the friction coefficient is taken as 0.3. Gap between steel core and constraining part, width to thickness ratio of steel core, constraining ratio and initial imperfection are the key parameters which have a significant impact on the performance of BRBs. It is suggested that the gap be no more than 1/8 of the core thickness and width to thickness ratio be no larger than 23, the constraining ratio be no smaller than 0.80 when the manufacture error meets the requirement in code for acceptance of construction quality, and the limiting value of constraining ratio be larger when the manufacture error increases. ©, 2014, Tianjin University. All right reserved.

引用

页码：8 / 16

页数：8

共 14 条

[1]

Wakabayashi M., Nakamura T., Katagihara A., Et al., Experimental study on the elastoplastic behavior of braces enclosed by precast concrete panels under horizontal cyclic loading - Part 1&2 , Summaries of Technical Papers of Annual Meeting of Architectural Institute of Japan, pp. 1041-1044, (1973)

[2]

Watanbe A., Hitomi Y., Wada A., Et al., Properties of braces encased in buckling-restraining concrete and steel tube , Proceeding of 9th World Conference on Earthquake Engineering, 4, pp. 719-724, (1988)

[3]

Fujimoto M., Wada A., Saeki E., Et al., A study on the unbonded braces encased in buckling-restraining concrete and steel tube , Journal of Structural and Construction Engineering, 34B, pp. 249-258, (1988)

[4]

Kuwahara S., Tada M., A study on stiffening capacity of double-tube members , Journal of Structural and Construction Engineering, 445, pp. 151-158, (1993)

[5]

Koetaka Y., Narihara H., Tsujita O., Experimental study on buckling restrained braces , Proceedings of Sixth Pacific Structural Steel Conference, pp. 15-17, (2001)

[6]

Nakamura H., Takeuchi T., Maeda Y., Et al., Fatigue Properties of Practical-Scale Unbonded Braces, Nippon Steel Technical Report, pp. 51-57, (2000)

[7]

Prasad B.K., Experimental investigation of sleeved column , Proceedings of the 33rd Structural Dynamics and Materials Conference of American Institute of Aeronautics and Astronautics, (1992)

[8]

Clark P., Aiken I., Kasai K., Et al., Design procedures for buildings incorporating hysteretic damping devices, Proceedings of 68th Annual Convention of Structural Engineers Association of California, (1999)

[9]

Chen C.C., Chen S.Y., Liaw J.J., Application of low yield strength steel on controlled plastification ductile concentrically braced frames , Canadian Journal of Civil Engineering, 28, 5, pp. 823-836, (2001)

[10]

Chen Y., The Research on the Anti-Seismic Performance of a Rectangle Section Buckling Restrained Brace , (2006)

← 1 2 →