基于p-y曲线法的高桩码头全结构段和单排架模型对比研究

以某钢筋混凝土高桩梁板结构为例,基于p-y曲线法,采用ANSYS建立了全结构段和单排架模型。施加相应荷载组合,对两种模型的桩基内力进行了对比。通过调整单排架中船舶撞击力在排架中的分配系数,对比单排架的桩基和横梁内力与全结构段的误差。所得结果说明,规范中规定的横向水平力在排架中的分项系数不适用于三维有限元梁板结构。结论对高桩码头内力计算有参考价值。

Dynamic Behavior of a Predator-prey System with Stage-structure for Prey

In this paper, we considered the predator-prey system with stage-structure for prey, where the predators predate immature preys only. The positivity and boundedness of the solutions and asymptotic stability of equilibrium were firstly discussed, and then uniformly persistent sufficient conditions of populations were found.