Simplified structural calculation for Caohe River Aqueduct of Beijing-Shijiazhuang section of middle route of South-to-North Water Diversion Project

In order to reduce the difficulty and complexity of the structural calculation of the aqueduct with a large span,and prove the correctness of the monitoring instrument layout for the Caohe River Aqueduct,a simplified calculation is conducted for the aqueduct(with a span of 30m),a emergency water supply works of Beijing-Shijiazhuang section of the middle route of South-to-North Water Diversion Project.Based on the structural and mechanical characteristics of the aqueduct,the aqueduct with a span of 30m and multi-side walls is simplified into bottom-board,secondary girder,girder and walls.Adverse sections are determined according to the calculated bending moment of these structures.Accordingly,the monitoring instruments should be arranged reasonably at the positions where the stress or deflection are relatively large,so as to reflect the operation status of the aqueduct in real-time.