In Situ Load Experimental Research on the Stress Characteristics of Large Span Aqueduct

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 4949-4952
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.4949
• Online since: July 2011
• Authors: Hua Feng Deng, Yu Wang, Min Zhu, Zhuang Cheng, Xiao Liang Xu
• Keywords: Interior Instruments, Strain Gauge, Stress Characteristics, Tension Stress

References

[1] BIAN Qiu-pu, LEI Jin-sheng, SUN Qing. The field experiment methods of the pre-stress concrete structure with post-tensioning method on Caohe Aqueduct[J]. South-to-North Water Transfers and Water Science & Technology, 2008, 6(2): 23-25, in Chinese.

[2] Wang Kang-ping, Zhang Lan-hua, Ren De-ji. Three-dimensional Prestressed Structure Design and Numerical Analysis of the Arc Section of the Caohe Aqueduct [J]. China Rural Water and Hydropower, 2007, 25(8): 54-58, in Chinese.

[3] Peng Hui, Liu De-fu, Luo Xian-qi. Study on the Fluid-solid Interaction Mechanism of Caohe Aqueduct in South-to-North Water Diversion Middle Line Project[J]. Journal of Irrigation and Drainage, 2006, 25(5): 75-77, in Chinese.

[4] Niu Gui-lin. Calculation of Inner Force and Disposal of Tendon in Caohe River Flume Structure of South-north Water Transfer[J]. Hebei Water Resources and Hydropower Engineering, 2005, 25(5): 4-6, in Chinese.