In Situ Load Experimental Research on the Stress Characteristics of Large Span Aqueduct
Cao river aqueduct was the largest aqueduct in Asia for its span,the actual stress state of aqueduct structures, and whether the effect of prestressed meet the design requirements all will directly influence the safety operation of aqueduct.Load test is an important means of testing structure design and construction quality of reinforced concrete, and stress test is one of the important methods of monitoring, which can more objectively reflect the real stress condition of structure. Therefore, impounding test of the aqueduct was carried out before formal operation, stress characteristics of the aqueduct under impounding conditions were analyzed in detail. The results analysis shows that the aqueduct were in well flexible working conditions under testing load.These show that the structure design is basically rational; design value of material strength and the actual stiffness of the aqueduct meet design requirements and have a certain degree security reserve. At same time, the test offered a foundation for its later period working.
Dongye Sun, Wen-Pei Sung and Ran Chen
H. F. Deng et al., "In Situ Load Experimental Research on the Stress Characteristics of Large Span Aqueduct", Applied Mechanics and Materials, Vols. 71-78, pp. 4949-4952, 2011