New Hanger Design Approach of Tied-Arch Bridge to Enhance Its Robustness

다국어 초록 (Multilingual Abstract)

As the crucial components among the tied-arch bridge, the local failure of hangers may trigger a progressive collapse through the entire tied-arch bridge. However, the current design guidance as regards hangers still lacks consideration of structure robustness under an extreme hazard. To improve the structural robustness of tied-arch bridge under extreme conditions, a new hanger design method is proposed, which is termed as asymmetric parallel double-hanger system. Based on Miner’s linear cumulative damage law, an analysis on the fatigue life of the double-hanger system was conducted to verify the feasibility of the proposal, and then a dynamic time-history analysis was employed to simulate the transitory fracture impact due to one or more hangers fracturing. According to the simulation results, the structural robustness is greatly enhanced with asymmetric parallel-double hanger system design, when compared with single hanger system design. When one or more hangers reveal local damage, it will not trigger a progress failure to the whole structure in particular. Several practical suggestions of bridge system’s load-carrying capacity are also put forward for the future arch bridge design at the end of this paper.

참고문헌 (Reference)

1 Xia, Y. F., "Study on vehicular fatigue load spectrum expressway based on WIM system" 31 (31): 56-64, 2014

2 Buscemi, N., "SDOF model for progressive collapse analysis" 1-12, 2005

3 Cynthia Pearson, "Ronan Point Apartment Tower Collapse and its Effect on Building Codes" American Society of Civil Engineers (ASCE) 19 (19): 172-177, 2005

4 Agarwal, J., "Robustness of Structures: Lessons from Successes and Failures" 2011

5 Gulvanessian, H., "Robustness and the Euro Codes" 16 (16): 167-171, 2006

6 Giorgio Anitori, "Redundancy and Robustness in the Design and Evaluation of Bridges: European and North American Perspectives" American Society of Civil Engineers (ASCE) 18 (18): 1241-1251, 2013

7 Paramasivam, S., "Protective Design Against Disproportionate Collapse of RC and Steel Framed Buildings" University of Southampton 2008

8 GSA, "Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Projects"

9 Bao-Chun Chen, "Overview of Concrete Filled Steel Tube Arch Bridges in China" American Society of Civil Engineers (ASCE) 14 (14): 70-80, 2009

10 American Society of Civil Engineers, "Minimum Design Loads for Buildings and Other Structures" ASCE 2002

11 Rui-Juan Jiang, "Improved hanger design for robustness of through-arch bridges" Thomas Telford Ltd. 166 (166): 193-204, 2013

12 Amir Soltani, "Fatigue Performance of High-Strength Reinforcing Steel" American Society of Civil Engineers (ASCE) 17 (17): 454-461, 2012

13 US DoD, "DoD Minimum Antiterrorism Standards for Buildings"

14 U. Starossek, "Disproportionate collapse: a pragmatic approach" Thomas Telford Ltd. 160 (160): 317-325, 2007

15 Max Gündel, "Design of High Rise Steel Buildings against Terrorist Attacks" Wiley 27 (27): 369-383, 2012

16 Ministry of Transport of the People’s Republic of China, "Design Specifications of Highway Cable Stayed Bridge (JTJ 027—96)"

17 Munenobu Kondoh, "Design Method of a Hanger System for Long-Span Suspension Bridge" American Society of Civil Engineers (ASCE) 6 (6): 176-182, 2001

18 A. Fatemi, "Cumulative fatigue damage and life prediction theories: a survey of the state of the art for homogeneous materials" Elsevier BV 20 (20): 9-34, 1998

19 Robert Hong, "Chicago’s First Tied-Arch Bridge" American Society of Civil Engineers (ASCE) 19 (19): 04014011-, 2014

20 M. Byfield, "Catenary action in steel-framed buildings" Thomas Telford Ltd. 160 (160): 247-257, 2007

21 Bruce R. Ellingwood, "Building Design for Abnormal Loads and Progressive Collapse" Wiley 20 (20): 194-205, 2005

22 Ellingwood, B. R., "Best Practices for Reducing the Potential for Progressive Collapse in Buildings" National Institute of Standards and Technology, US Department of Commerce 2007

23 BSI, "BS EN 1991-1-7: Euro code 1: Actions on structures: Part 1-7: Accidental actions"

24 Morison, C., "A review of progressive collapse research and regulations" 167 (167): 447-456, 2014