中外规范重力式码头结构计算方法对比

Comparison of calculation methods for gravity wharf structures in Chinese and foreign codes

针对沉箱重力式码头结构采用国内外不同标准计算,进行各规范计算方法的对比研究。采用概率理论为基础的极限状态设计方法,对某新建沉箱重力式码头结构进行计算,重点对比中外规范对不同荷载分项系数以及工况组合差异,分析不同规范工况组合下沉箱重力式码头结构抗倾抗滑稳定性的差异。得出在进行抗滑稳定验算时,美标和欧标组合M2的设计偏安全,中标介于欧标组合M2和M1之间,日标的安全系数偏小;在抗倾稳定验算时,欧标对比中标相对偏安全,美标和日标的综合安全系数高于欧标和中标。本文对比研究可以为国内外沉箱重力式码头工程的设计提供相关的借鉴和参考。

A comparative study is conducted on the calculation methods of different domestic and foreign standards for the structure of caisson gravity wharfs using different specifications.The limit state design method based on probability theory is adopted to calculate the structure of a newly built caisson gravity wharf.The focus is on comparing the differences in load sub coefficients and working condition combinations between Chinese and foreign standards.The differences in anti tilting and anti sliding stability of the caisson gravity wharf structure under different working condition combinations are analyzed.When conducting anti slip stability verification,the design of the American and European standard combination M 2 is relatively safe,with the Chinese standard being between the European standard combination M 2 and M 1,and the safety factor in the Japanese standard being relatively small.In the calculation of anti tilt stability,the European standard is relatively safer compared to the Chinese standard,and the comprehensive safety factor of the American and Japanese standards is higher than that of the European and Chinese standards.This comparative study can provide relevant reference and guidance for the design of caisson gravity wharfs both domestically and internationally.