Hangzhou Bay Sea-Crossing Link Precast Girders
Precast UHPC I-girders for a major sea-crossing link, designed for minimal maintenance intervals in high-salinity coastal environments. Integrated stainless micro-reinforcement eliminated conventional shear stirrup congestion.
Compressive Strength
140 MPa
Category
Bridge
Location
Hangzhou, Zhejiang Province, China
Engineering Challenge
The Hangzhou Bay environment presents extreme chloride ingress rates and significant tidal variation. Conventional precast girders required dense shear reinforcement that complicated casting and increased corrosion risk.
UHPC Solution
Steel fiber-reinforced UHPC girders achieved shear capacity through fiber bridging mechanisms, reducing rebar congestion by 60% while extending inspection intervals to 50+ years.
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