基于ABAQUS的港工结构计算模型自动地应力平衡方法研究  

Research on automatic geo-stress balance method for harbor structure calculation model based on ABAQUS

作　　者：贺林林[1,2,3] 贾瑞 焦钰褀 梁越[1,2,3] HE Lin-lin;JIA Rui;JIAO Yu-qi;LIANG Yue(National Inland Waterway Regulation Engineering Research Center,Chongqing Jiaotong University,Chongqing 400074,China;Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education,Chongqing Jiaotong University,Chongqing 400074,China;School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学,国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学,水利水运工程教育部重点实验室,重庆400074 [3]重庆交通大学河海学院,重庆400074

出　　处：《水运工程》2021年第11期178-185,共8页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2018YFB1600400);重庆市基础与前沿研究科学基金项目(CSTC2018jcyjAX0559);重庆交通大学研究生科研创新项目(2020S0028);中国地质调查项目(DD20189270)。

摘　　要：初始地应力场是结构-地基相互作用下有限元分析重要的初始条件,其平衡结果的精度将直接影响结构数值分析结果的准确性。虽然自动地应力平衡法操作步骤最为简单、所得结果最优,但受地基或结构形式、地基土层参数及接触等复杂条件的严重制约,其在实际中的应用非常受限。利用ABAQUS软件,在严格遵守实际地应力平衡时间节点的基础上,采用设置生死单元的方式实现初始地应力平衡前、后地基-结构所在空间单元的置换,建立通用自动地应力平衡方法及步骤,并通过多个典型港工结构模型算例进行验证。结果表明,本文的自动地应力平衡方法及步骤简单、易行,且能够方便有效地实现各种复杂情况下港工结构计算模型的初始地应力平衡。The initial geo-stress field is an important initial condition for finite element analysis of structure-soil interaction.The accuracy of initial geo-stress balance results directly affects the accuracy of numerical analysis results of structure.The operation of the automatic geo-stress balance method is the simplest,and the results of it are greatly better than other calculation methods.However,owing to being confined seriously by the foundation and structure type,the soil foundation parameters and contact conditions,the application of it in practice is very limited.We adopt the software of ABAQUS based on following the actual timeline for geo-stress balance in the process of numerical simulation strictly,apply the way of setting life and death elements to implement the replacement of the foundation-structure space element before and after the initial geo-stress balance,establish a general automatic geo-stress balance method and its procedures,and adopt a series of typical complex soil-wharf structure calculation models to verify the proposed method.The results show that the automatic geo-stress balance method and its procedures established in this paper are easy to implement but with the highest accuracy compared with other methods,and it can conveniently and effectively achieve the initial geo-stress balance for various complex calculation models.

关 键 词：ABAQUS 初始地应力场 港工结构计算模型 自动地应力平衡法 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程] TU431[交通运输工程—船舶与海洋工程]