高桩码头梁格空间通风孔设置对盐雾消散的影响

海洋环境下高桩码头梁格空间盐雾集聚极易使码头纵横梁混凝土结构发生腐蚀,对码头结构的耐久性造成不利影响。运用有限元软件ANSYS流体动力学CFD模块,建立高桩码头梁格空间三维模型,通过改变不同的纵梁开孔方式,分析高桩码头梁格空间底部盐雾易集聚区域的风速和压强变化规律,对比不同开孔方式对盐雾的消散效果,并对开孔方式进行优化。结果表明,纵梁设置通风孔能有效改善梁格空间的气流分布,孔布置在纵梁两端距离横梁1.2 m时,对盐雾的消散效果最明显。

Effect of vent setting on salt spray dissipating in grillage space of piled beam-slab wharf

The salt spray gathering in the grillage space of piled beam-slab wharf easily makes the beams corroded in the harsh marine environment,which can cause an adverse impact on the durability of structure.Using the fluid dynamic module CFD of ANSYS,we establish the three dimension model of grillage space of piled beam-slab wharf.For various vent forms,we analyze the wind speed and pressure in salt spray concentration area of piled beam-slab wharf,and optimize the vent setting based on the results of the dissipation effects for salt spray.The results show that the vent setting in the longitudinal beam could improve air flow distribution of grillage space effectively,and as the distance between the vent and two ends of beam was 1.2 meters the dissipation effect for salt spray is most significant.