高桩码头横向分力在各排架的分配  

Distribution of transverse forces of piled wharf to the bents

作　　者：陈明关 

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032

出　　处：《水运工程》2010年第12期68-71,共4页Port & Waterway Engineering

摘　　要：高桩码头设计是按弹性支承刚性梁法计算横向分力在各排架上的分配。但随着大直径桩的应用,桩基的水平刚度可比过去传统的小直径方桩增大许多倍,有些特殊的长分段码头其分段长度与平台宽度之比很大,是否无论码头分段多长、平台多窄、桩基如何选型及布置都能按刚性梁法计算分配排架横向分力?对此进行研究,解决了以下2个问题:1)在什么条件下可采用刚性梁法,在什么条件下应采用弹性梁法;2)当平台截面与排架水平刚度一定时,分段超过多少跨后,对减小排架承担的船舶撞击力或系缆力影响不大。有助于设计判断采用哪种计算方法,并从有效减小排架横向分力的角度上考虑确定不宜超过的分段跨数,可供设计参考。In piled wharf design,the distribution of transverse forces to the bents is usually calculated based on the elastic support-rigid beam method.Following the application of large-diameter piles,the horizontal rigidity of current pile foundation has increased many times of the traditional small-diameter piles.For some special wharves with long section length,the ratio of the section length to the platform width is very large.This paper studies the adaptability of calculating method for distribution of the transverse forces to the bents,and has solved the following two problems： 1）The conditions under which the rigid beam method can be adopted or the elastic beam method should be used;2） The maximum number of longitudinal spans when it has little effect on reducing the ship impact or mooring force acted on the bents under the condition that the platform transverse section and the bent horizontal rigidity are fixed.It is helpful for choosing the proper calculation method and determining the maximum number of the longitudinal spans from the point of reducing effectively the transverse force of bents,and may serve as references for the design.

关 键 词：高桩码头 横向排架 横向分力 分段长度 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]