schlaich’s use of cable-stays by avery choi & shaun lee

Schlaich’s Use of Cable-stays

By Avery Choi & Shaun Lee

JORG SCHLAICH

• Born in 1934, Stuttgart, Germany

• Studied Architecture and Structural Engineering

• Worked for Leonhardt • Setup own firm:

Schlaich Bergermann and Partners

Definition of Cable-Stayed Structures

• A cable-stayed structure is one that employs cables to transfer its loads to the supports.

• Cable-stayed structures must have:PylonsDiagonal cable-stays

Cable-Stay Configurations

Radial Configuration VS Parallel Configuration

Why use Cable-Stays?• Versatile

• Low construction costs

• Light and elegant

Why not?• Susceptible to wind forces

• Complex computer analysis required

Schmehausen Cable-net Cooling Tower

• Social: Architects and Engineers loved it

• Symbol: Landmark structural engineering in Denmark

• Scientific: Combined the use of cable-stays with cable nets

Pedestrian Bridge in Horn

Kiel, Germany

2nd Hooghly River bridge

• Location = Calcutta, India

• Deck width = 35m or 6 Vehicle lanes

• Spans total of 821m = 182 – 457 – 182m

• Towers = 135m high

• Material = steel with concrete cladding

“If I am proud of anything and happy above that, then it is this

bridge!”By Jorg Schlaich

Santiago Calatrava

Conclusion

• Cable-Stays can be used for a variety of purposes and design constraints

• Schlaich’s cable-stayed structures are: Efficient – Hooghly river bridgeEconomical – Cooling plantElegant – Folding bridge