舒庐干渠连续梁桥式渡槽结构安全分析

Structural safety analysis of continuous beam bridge aqueduct in Shulu main canal

为适应跨流域调水工程中大跨径渡槽工程建设,在消化吸收连续梁桥建设经验的基础上,舒庐干渠上跨引江济淮工程的渡槽,选用变截面连续梁桥作为支撑结构的连续梁桥式渡槽。在综合考虑了结构自重、水荷载、温度应力、预应力以及地震荷载等对连续梁桥式渡槽的影响后,采用Midas Civil三维有限元软件对渡槽支撑结构主梁、墩和桩基进行安全分析,分析结果表明在上述荷载作用下,舒庐干渠连续梁桥式渡槽结构安全可靠。

In order to adapt to the construction of long-span aqueduct in inter basin water transfer project,on the basis of digesting and absorbing the construction experience of continuous beam bridge,the aqueduct of Shulu main canal crossing the Yangtze-to-Huaihe River water diversion is selected as the continuous beam bridge aqueduct with variable cross-section continuous beam bridge as the supporting structure.After comprehensively considering the effects of structural self-weight,water load,temperature stress,prestress and seismic load on the continuous beam bridge aqueduct,the safety analysis of the main beam,pier and pile of the aqueduct supporting structure is carried out by using Midas civil three-dimensional finite element software.The analysis results show that the continuous beam bridge aqueduct structure of Shulu main canal is safe and reliable under the above loads.