Probabilistic Evaluation of Effects of Column Moment Magnification Factor on Seismic Performance of Reinforced Concrete Frames

Abstract:

Enhancing column flexural capacity is the key measure in seismic capacity design to achieve strong column-weak beam failure mode and determinate the probabilistic relation between column moment magnification factor (CMMF). In the paper the effects of column moment magnification factor on seismic performance of reinforced concrete (RC) frames are evaluated to limit the occurrence probability of column-hinging failure modes within an acceptable tolerance. Monte Carlo simulation methodology is used to calculate the probability of drift demand exceeding drift capacity of two typical frame structures with consideration of major uncertainties. And fragility curves are constructed to obtain the relationship between CMMF and probability of structural damages and assess the seismic vulnerability of RC frame structures. Results show that the seismic performance of RC frame structures can be significantly enhanced by improving CMMF. The CMMF is required to be equal to or greater than 2.0 to achieve acceptable probability of exceedance of column-hinging failure mode.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 251-257
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.251
• Online since: May 2011
• Authors: Ming Ji He, Chun Yang, Jian Cai, Yan Sheng Huang, Yi Wu
• Keywords: Column Moment Magnification Factor, Monte-Carlo Simulation, Probability, Seismic Performance, Weak-Beam Strong-Column

References

[1] Park, R., and Pauly, T. (1975). Reinforced concrete structures, Wiley, New York, 554–568.

[2] Lee, H.-S. (1996). ''Revised rule for concept of strong-column weak-girder design.'' J. Struct. Engrg., ASCE, 122(4), 359–364.

DOI: 10.1061/(asce)0733-9445(1996)122:4(359)

[3] Ono Tetsuro, Zhao Yan-Gang, Ito Takuya. Probabilistic evaluation of column overdesign factors for frames [J]. Journal of Structural Engineering, 2000, 126(5):605-611

DOI: 10.1061/(asce)0733-9445(2000)126:5(605)

[4] Dooley K.L., Joseph M. Bracci. Seismic Evaluation of Column-to-Beam Strength Ratios in Reinforced Concrete Frames [J]. ACI Structural Journal, 2001, 98(6):843-851

DOI: 10.14359/10751

[5] Yuan Xianxun, Yi Weijian. Probability analysis on "strong beam and weak beam" and axial compression ratio in RC frame [J]. Journal of Chongqing Jianzhu University, 2000, 22(3):64-68(in Chinese)

[6] Yang Hong, Wei Feng, Bai Shaoliang, Wang Zhen. Effect of moment amplification factors of columns on controlling plastic hinge mechanism of RC frame[J]. Engineering Mechanics, 2005, 22(2):155-161(in Chinese)

[7] China national standard (GB50011-2001). Code for seismic design of buildings[S]. Beijing: China building industry press, 2001.

[8] Reinhorn AM, Valles RE, Kunnath SK, Madan A, Reichmen Y, Vladesscu A, et al. IDARC 2D version 6.1: users manual. State University of New York at Buffalo: Department of Civil Engineering; 2006.

[9] Ou Jingping, Hou Gangling, Wu Bin. Random pushover analysis method and its application in earthquake resistant reliability evaluation of structural systems [J]. Journal of Building Structures, 2001, 22(6):81-86(in Chinese)

[10] Elnashai A, Borzi B, Vlachos S. Deformation-based vulnerability functions for RC bridges. Struct Eng Mech 2004; 17(2):215–44.

DOI: 10.12989/sem.2004.17.2.215

[11] Shinozuka M, Feng MQ, Lee J, Naganuma T. Statistical analysis of fragility curves. J Eng Mech 2000; 126(12):1224–31.

DOI: 10.1061/(asce)0733-9399(2000)126:12(1224)

[12] Choi E, DesRoches R, Nielson B. Seismic fragility of typical bridges in moderate seismic zones. Eng Struct 2004; 26(2):187–99.

DOI: 10.1016/j.engstruct.2003.09.006

[13] Hazus99 User's manual. Washington, D.C.: Federal Emergency Management Agency, (1999)