混凝土人工鱼礁选型的初步分析

人工鱼礁的选型优化包括对礁体材料和礁体构造的选择。参考目前现有人工鱼礁结构类型,选取混凝土为设计礁体材料,计算各礁体实体体积、空方体积、表面积及其重量,通过计算找出礁体各性能参数之间的关系。引入礁体每体积混凝土产生的空方体积(ε)和表面积(η)两个优化参数,来衡量礁体的性能。结果表明:框架形礁ε值相对较高,而异体形或组合鱼礁η值相对较高,说明框架形礁体单位体积混凝土产生流态效应最好,异体形或组合结构礁体单位混凝土附着面积较多。同时引入有效空方体积概念,进一步说明礁体结构与流态的关系。

Primary analysis of model selection for artificial reefs

The model selection of artificial reefs includes the selection of reef materials and reef structure.Based on the present structures of artificial reefs,concrete is chosen as the representative materiaI for designing.This paper computes reef parameters,including reef physical volume,side air volume,surface area and reef weight,and then analyzes the relations between each capability parameter.Two optimized values ε and η/are brought forward to demonstrate the reef capability,ε denoting the side air volume per unit concrete physical volume,and η meaning the surface area produced by per unit concrete physical volume.Results show that the value ε of frame reef is higher.which means the flow effect made by unit volume concrete frame reef is the best.While the value η of variant or combination reef is relatively higher,demonstrating that it produce more attachment area per unit concrete.The concept of effective side air volume is introduced to further clarify the relation between reef structure and flow capacity.