外海轻型码头结构环境荷载的统计分析  

Statistical analysis of environmental loads for light open-wharf

作　　者：王建超[1] 贡金鑫[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023

出　　处：《水运工程》2010年第2期54-59,共6页Port & Waterway Engineering

基　　金：国家863科技项目资助(2007AA11Z130)

摘　　要：对外海轻型码头结构的波浪荷载和海流荷载进行了统计分析。给出一个波浪周期内,波浪荷载的均值系数和变异系数随相位角的变化,进而得出50年设计基准期内波浪荷载的均值系数和变异系数。使用Monte-Carlo方法研究了波浪荷载的概率分布类型。利用海洋平台已有的研究成果,给出了50年设计基准期内海流荷载的均值系数和变异系数。结果表明:对于外海轻型码头结构,可认为波浪荷载和海流荷载均服从极值I型分布;50年基准期波浪荷载的均值系数为1.166,变异系数为0.263,海流荷载的均值系数为1.269,变异系数为0.142。A statistical analysis is conducted on the wave load and ocean current load for open sea small wharf, which concludes that the coefficient of mean value and coefficient of variability for wave load changes with phase angle within a wave period, and thus obtaining the coefficient of mean value and coefficient of variability for wave load in the reference period for 50 years design. The Monte-Carlo methods are used in study of probability distribution pattern of wave load, and the existing research achievements of offshore platforms are used to Obtain the coefficient of mean value and coefficient variability for ocean current load in the reference period for 50 years design. The results show that, for the structure of open sea small wharf, the wave load and ocean current load can be considered as to be subject to the extreme value type Ⅰ distribution; the coefficient of mean value and coefficient of variability for wave load is 1.166 and 0.269, respectively, and that of ocean current load is 1.259 and 0.142, respectively in the reference period for 50 years design.

关 键 词：轻型开敞式码头 环境荷载 波浪力 海流荷载 概率分布 

分 类 号：TU332.2[建筑科学—结构工程]