Tuanhe Bridge is a single tower cable-stayed bridge,with a steel-concrete composite spatial frame tower,and with the 90m+90m main span across Tuanhe river in Dengzhou city.The design height of main sin-gle tower is 75.5m,with four special-shaped limbs.The four tower columns have large dip angle,curved top profile,and as a result,significantly higher bending,shear,and torsion effects.Based on MIDAS Civil,static and dynamic analysis were carried out to study the mechanical state of bridge tower.Using a variety of forms beams in cable tower,different cohesion positions,anchoring methods were selected for design optimization.Through the tower design of cable-stayed bridge with single tower and four special-shaped limbs,the main points and difficulties were concluded,and can be referenced by similar bridge tower design.
Four special-shaped limbsSpatial frameSingle tower cable-stayed bridgeBridge tower de-signForce analysis
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