Two-way prestressed technology applied in Tanglai channels through Beita lake large-scale aqueduct

In view of particularity of the Beita Lake aqueduct, which crosses Tanglai channels, the two-way prestressed technology is adopted,and after sidewalks in large span structures of aqueduct is prefabricated and hoisted,secondary floor is poured in design and construction plan. The result shows the comprehensive function of aqueduct is implemented in complicated conditions,such as short construction period,larger span of structures,navigation under aqueduct,prefabrication and hoisting of large sidewall.