Design objectives and collapse prevention for building structures in mega-earthquake

Special Section: Lessons Learned from the Wenchuan Earthquake

Abstract

A “mega-earthquake” is one with an intensity larger than the most severe earthquake intensity category currently considered in design codes. For a “mega-earthquake,” the design objective of a given structure is to “preserve living spaces for people in the buildings.” In this paper, factors that may influence the collapse resistance of RC frames in a megaearthquake are analyzed based on seismic damage observed in the 2008 Wenchuan earthquake. Methodologies to improve structural collapse resistance focus on three aspects: global strength margin, global redundancy and global integration of the structural system. Fundamental principles and design concepts for collapse prevention under a mega-earthquake are proposed, and issues that need further research are identified.

Keywords

Wenchuan earthquake mega-earthquake RC frame collapse strength margin 

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References

  1. Chinese Seismic Design Code (2001), Code for Seismic Design of Buildings (GB50011-2001), Beijing: China Building Industry Press. (in Chinese)Google Scholar
  2. Civil and Structural Groups of Tsinghua University, Xinan Jiaotong University and Beijing Jiaotong University (2008), “Analysis on Seismic Damage of Buildings in the Wenchuan Earthquake,” Journal of Building Structures, 29(4): 1–9. (in Chinese)Google Scholar
  3. International Code Council (ICC) (2009), International Building Code (IBC).Google Scholar
  4. Qin Q, Lin DJ and Mei G (2006), Reliability Stochastic Finite Element Methods theory and Applications, Beijing: Tsinghua University Press.Google Scholar
  5. Shi W, Ye LP, Lu XZ and Tang DY (2009), “Study on the Collapse-resistant Capacity of RC Frames with Different Seismic Fortification Levels,” Proc. 12th Conf. on Earthquake Resistance Technology of Highrise Buildings, Beijing, Vol.10, pp: 46–57.Google Scholar
  6. Tang DY, Lu XZ, Ye LP and Shi W (2009), “Influence of Axial Compression Ratio to the Seismic Collapse Resistance of RC Frame Structures,” Proc. 12th Conf. on Earthquake Resistance Technology of High-rise Buildings, Beijing, Vol.10, pp: 35–45.Google Scholar
  7. Wang ZF (2008), “A Preliminary Report on the Great Wenchuan Earthquake,” Earthquake Engineering and Engineering Vibration, 7(2): 225–234.CrossRefGoogle Scholar
  8. Whittaker A, Hart G and Rojahn C (1999), “Seismic Response Modification Factors,” Journal of Structural Engineering, ASCE, 125(4): 438–444.CrossRefGoogle Scholar
  9. Yang XM and Chen ZY (2008), “Research on the Disaster Resistance of Chinese Buildings and the Strategies of Post-disaster Reconstruction,” The Proposal of the Chinese Academy of Engineering. (in Chinese)Google Scholar
  10. Ye LP, Lin XC, Qu Z, Lu XZ and Pan P (2010), “Evaluating Method of Element Importance of Structural System Based on Generalized Structural Stiffness,” Journal of Architectural and Civil Engineering, 27(1): 1–6. (in Chinese)Google Scholar
  11. Ye LP, Qu Z, Lu XZ and Feng P (2008), “Collapse Prevention of Building Structures: a Lesson from the Wenchuan Earthquake,” Journal of Building Structures, 29(4): 42–50.Google Scholar

Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Department of Civil EngineeringTsinghua UniversityBeijingChina
  2. 2.Key Laboratory of Civil Engineering Safety and DurabilityMinistry of Education of ChinaBeijingChina

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