摘要
板桩码头变形计算的常规方法为竖向弹性地基梁法,由于该方法未考虑土体的非线性及土体的历史应力状态等因素,其变形计算结果往往存在较大偏差。特别是对于深水板桩码头,加卸载引起的土体刚度变化不可忽略,计算时应充分考虑该因素的影响。通过数值模拟方法,采用摩尔-库伦模型、硬化土模型、小应变硬化土模型等3种土体本构模型,计算广州南沙某深水钢管板桩码头的变形,并与实测数据进行对比。结果表明小应变硬化土模型计算精度较高,可供类似工程参考。
The conventional deformation calculation method for sheet-pile wharves is the vertical elastic foundation beam method.Since this method does not consider factors such as the nonlinearity of the soil and the historical stress state of the soil,its deformation calculation results often exhibit large deviations.This is especially true with deep-water sheet-pile wharves,where the changes in soil stiffness caused by loading and unloading are non-negligible and thus deserve due consideration in the calculation.Resorting to the numerical simulation method,this study uses three soil constitutive models,namely the Mohr-Coulomb model,the hardening soil model,and the small-strain hardening soil model,to calculate the deformation of a deep-water steel pipe sheet-pile wharf in Nansha District,Guangzhou and compares the results with the measured data.The results show that the small-strain hardening soil model achieves high calculation accuracy and can serve as a reference for similar projects.
作者
李春阳
刘洋
LI Chun-yang;LIU Yang(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510290,China)
出处
《水运工程》
北大核心
2022年第10期90-93,共4页
Port & Waterway Engineering
关键词
板桩码头
小应变硬化土模型
变形分析
sheet-pile wharf
small-strain hardening soil model
deformation analysis
