双钢板夹心混凝土渡槽托举效率系数研究

Study on Lift Efficiency of Steel-concrete-steel Composite Aqueduct

为解决传统渡槽自重大、抗渗措施麻烦及抗震设计等问题,采用有限元软件ABAQUS建立了双钢板夹心混凝土简支梁和双钢板夹心混凝土渡槽非线性有限元模型,沿用栓钉的荷载-滑移曲线模拟了相同尺寸双钢板夹心混凝土梁和素混凝土梁在相同荷载和约束条件下的挠度,得到两种结构形式的刚度关系,验证了栓钉间距对结构刚度的影响规律,提出了渡槽托举效率的概念,有利于渡槽结构设计。

To solve the problems of larger gravity, complicated measures of leakage resistance and seismic design, the finite element software ABAQUS was employed to establish the numerical model of steel-concrete-steel （SCS） composite beam and SCS composite aqueduct. The load-slip curves for studs were investigated. The deflection of SCS composite beam and plain concrete beam under the same load and constraints were simulated to obtain the corresponding stiffness and the influence of the distance between the studs on the stiffness relationship of the composite structures was verified. Furthermore, the concept of lift efficiency for the design of aqueduct was proposed in this paper, which is suitable for de- sign of aqueduct structure.