港口工程中防撞桩的优化设计  

Optimization design on arrangement of anti-collision pile foundation in port engineering

作　　者：陈祥[1] 杨艺平[1] 李家华[1] 

机构地区：[1]中交第四航务工程勘察设计院有限公司,广州510230

出　　处：《水道港口》2016年第5期542-546,共5页Journal of Waterway and Harbor

摘　　要：以高桩码头端部防撞桩结构为研究对象,建立空间有限元模型,采用"m"法对不同撞击位置、方向下防撞桩结构的变形和内力进行分析,对比分析了3种桩基布置型式的防撞桩结构变形和受力特性。计算结果表明:单排直线型布置除桩轴力外,变形及内力均明显大于双排三角型布置和矩型布置;双排三角型布置和矩型布置变形和内力相当,防撞机理相似;单排直线型布置单桩变形及内力较大,选用桩的尺寸大,数量、种类少,防撞设施所占水域面积小,且工程量小。港口工程防撞桩设计中,在具备大尺度桩生产、施工的条件下,单排直线型布置更经济合理。In this paper,the research on the structure of anti-collision pile foundation in the end of high-pilewharf using Finite Element Model（FEM）was presented. By the means of＂m＂method,the deformation and inter-nal forces of anti-collision piles under the effect of different impact positions and directions were analyzed systemati-cally. The mechanical behavior of deformation and internal forces of anti-collision piles were also compared withthree different arrangements. The simulated results show that the deformation and internal forces of anti-collisionpiles in a single row,except axial force,are significantly larger than that in the types of triangular or rectangular ar-rangement with double row. Moreover,the deformation and internal forces of anti-collision piles in triangular or rect-angular arrangement with double row are equivalent and the mechanical behavior of anti-collision are similar. Al-though the deformation and internal forces of anti-collision piles in a single row are relatively large,it is recom-mended to apply larger size anti-collision piles in practical engineering due to its less quantities,less types,andless occupation of water area in the applications. Under the condition of production and construction of large-diame-ter piles,it is more economical and reasonable to use anti-collision piles with a single row in the port engineeringdesign.

关 键 词：港口工程 防撞桩 桩基布置型式 优化设计 "m"法 

分 类 号：TV139.2[水利工程—水力学及河流动力学] U651[交通运输工程—港口、海岸及近海工程]