Sung Su Truss Bridge

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By: bjmgmanmp (17 month(s) ago)

thank a lot. i will use this information in to my report. 555

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Failure Investigation of the Sung-Su Bridges Chun K. Seong Saint Martin’s College: 

Failure Investigation of the Sung-Su Bridges Chun K. Seong Saint Martin’s College Introduction Sung-Su Bridge Conclusion

1. Introduction: 

1. Introduction Three Dimensions of Structural Art by Professor David P. Billington Scientific Dimension - efficiency Social Dimension - economy Symbolic Dimension - structure’s elegance & expressive power

Scientific Dimension: 

Scientific Dimension Honesty to State-of-the-art to local engineering and technology Adhering to the rules of Design Process Training and skills of the Construction Personnel Diligent maintenance and inspection

Social Dimension: 

Social Dimension Political Pressure by over-achieving officials Economic Pressure due to short and long-range economic development plan Local’s ego to have the first kind, the tallest, the longest or the largest structure Forced to conform to the land use plan

Symbolic Dimension: 

Symbolic Dimension Bridge as a public fixture for everyone Bridge as the identity of a locality Crossing a large body of water-source of relaxation, recreation, and a peaceful background,

2. Case Study : 

2. Case Study Sung-Su Bridge, Seoul, Korea Welded and bolted steel truss bridge Constructed in 1979, failed in 1994 Reconstructed in 1997

Case Study - Sung-su Bridge: 

Case Study - Sung-su Bridge

Bridge Plan and Elevation: 

Bridge Plan and Elevation

Suspended Truss at Arch Shaped Steel Truss Bridge: 

Suspended Truss at Arch Shaped Steel Truss Bridge

Remaining Portion of Arch Shaped Steel Truss Bridge: 

Remaining Portion of Arch Shaped Steel Truss Bridge

Close-up view of a Hinge Connection at Truss Top Chord : 

Close-up view of a Hinge Connection at Truss Top Chord

Close-up view of a Hinge Connection at Truss Top Chord : 

Close-up view of a Hinge Connection at Truss Top Chord

Fractured Shape of the middle Vertical Hanger: 

Fractured Shape of the middle Vertical Hanger Photo Taken at site Diagram of fracture surface Paints at weld

Fractured Flange of the West Vertical Hanger: 

Fractured Flange of the West Vertical Hanger

Reconstruction of the Bridge: 

Reconstruction of the Bridge

Result of the Investigation: 

Result of the Investigation Political Pressure – military rules Socio-Economic Pressure - rapid growth Conceptual Design of the Bridge Engineering - no concept of FCM Construction - no shop drawing Maintenance - by visual inspection, no access to the failed detail

3. Conclusion: 

3. Conclusion Bridge structure is a symbolic fixture Forming an Identity of a community Technically proven efficient design, adequately developed and funded construction - elegant structure Independent cross-checking of the design Importance of Maintenance and Inspection