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多槽式渡槽作为一种交差联系的水工建筑物,在跨流域输水工程中得到了广泛应用。但由于槽内水载荷较大,多槽式渡槽结构头重脚轻,不利于抗震。在地震波作用下,水体晃动与槽体振动耦合,破坏程度更强。以新疆库玛拉克河东岸总干渠双槽式渡槽为例,建立流固耦合动力学模型,利用ANSYS软件对渡槽自振特性进行研究。研究表明,随着水体质量的增加,渡槽自振频率降低,自振周期增加。
Multi-trough aqueduct as a cross-linked hydraulic structures in the inter-basin water diversion project has been widely used. However, due to large water load in the tank, multi-tank aqueduct top-heavy, is not conducive to earthquake. Under the action of the seismic wave, the sloshing of the water body is coupled with the vibration of the tank body, and the damage degree is stronger. Taking the double channel aqueduct of the east bank of the Kumarak River in Xinjiang as an example, a fluid-structure interaction dynamics model is established and the natural vibration characteristics of the aqueduct are studied by ANSYS software. The research shows that as the mass of water increases, the natural frequency of aqueduct decreases and the period of natural vibration increases.