新型多孔结构不同开孔前墙在波浪作用下的受力分析

Force of front wall of new porous structure with different openings under wave action

针对在地形限制条件下常规直立式护岸在波浪作用下前墙反射严重、直立式沉箱结构前墙配筋量和混凝土用量较大导致不经济等问题,进行不同开孔结构在波浪作用下的试验研究以及前墙弯矩内力分布计算。采用波浪物理模型试验和有限元数值模拟分析方法,得到波浪压强以及结构前墙内力分布。结果表明,新型多孔结构可有效减小波压力,避免严重的波浪反射叠加作用,同时前墙只承受部分波浪力作用,由此产生的内力和变形均较小,此趋势在一定范围内与开孔增加呈正相关。可优化多孔结构前墙构件的配筋以达到经济效果。

The conventional vertical revetment faces a serious reflection of the front wall subject to wave action under the topographic restrictions,and the vertical caisson structure is uneconomical due to a large amount of reinforcement and concrete used in the front wall.In order to solve these problems,this paper carries out experimental research on different structures with openings under the wave action and calculates the bending moment distribution of the front wall.The paper uses the physical wave model experiment and finite element numerical simulation analysis to obtain the distribution of wave pressure and internal force of the front wall of the structure.The results show that the new porous structure can effectively reduce the wave pressure and avoid serious wave reflection superposition.At the same time,the front wall is only subject to part of the wave force,resulting in small internal force and deformation,and this trend is positively related to the increase in openings within a certain range.The reinforcement of the front wall component of the porous structure can be optimized to achieve economic results.