Title: Optimisation design and structure analysis of large-scale prestressed rectangular aqueduct

Authors: Wen-Liang Ma; Xin-Li Bai

Addresses: School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, China ' School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, China

Abstract: In order to provide theoretical basis for the design of large-scale prestressed rectangular aqueduct, saving engineering investment, and ensuring the safety and reliability of aqueduct structure. This paper adopts mixed discrete variable optimisation design method to carry out optimisation design for Sha river aqueduct of the south-to-north water diversion project, the objective function of optimisation design is project cost. Calculated results show that, optimisation design scheme of rectangular aqueduct is economic and reasonable, aqueduct structure meets the strength condition and stiffness condition, wind load has little effect for stress and deformation distribution of aqueduct, but water pressure has great effect for stress and deformation distribution of aqueduct. When stress concentration phenomenon at the junction of the longitudinal beams and transverse ribs in the rectangular aqueduct occurs, local stress is higher.

Keywords: south-to-north water diversion project; aqueduct; optimisation design; finite element; force analysis; stress distribution.

DOI: 10.1504/IJMSI.2018.093913

International Journal of Materials and Structural Integrity, 2018 Vol.12 No.1/2/3, pp.245 - 260

Available online: 24 Jul 2018 *

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