海底结构物坐底吸附力试验及影响因素研究  

Study of bottom-sitting adsorption tests of submarine structures and the influencing factors

作　　者：祝闻崧 郭力[1,2] 袁昱超 ZHU Wensong;GUO Li;YUAN Yuchao(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学海洋工程全国重点实验室,上海200240 [2]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《中国舰船研究》2024年第S02期147-155,共9页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(52371283)。

摘　　要：[目的]针对海底结构物回收过程中的土体吸附力造成结构物回收困难的问题,提出海底结构物坐底吸附力模型试验方法。[方法]通过设计一系列海洋结构物底座模型,搭建简易的模拟结构物坐底抬升过程的模型试验装置,并采用特制加载装置定量测量坐底抬升受到的吸附力,以探究土壤类型、坐底时间、坐底质量、坐底面积、底座材料等参数对结构物坐底吸附力的影响规律。[结果]试验结果表明:吸附力与坐底时间、坐底质量呈正相关关系,与坐底面积呈负相关关系;砂土和模拟土的吸附力约为海试土的50%和80%;底座材料越光滑,吸附力越小。[结论]研究成果可为海底结构物设计提供参考。[Objective]Aiming at the problem of structure recovery difficulty caused by soil adsorption force in the process of submarine structure recovery,the model test method of submarine structure sitting bottom adsorption force is proposed.[Methods]By designing a series of marine structure base models,building a simple model test device to simulate the process of structure bottom lifting,and adopting a special loading device to quantitatively measure the adsorption force of bottom lifting,we investigated the influence of parameters such as soil type,time of bottom lifting,mass of bottom lifting,area of bottom lifting,and material of base lifting,etc.on the adsorption force of bottom lifting of the structures.[Results]The test results show that the adsorption force is positively correlated with the sitting time and sitting weight,and negatively correlated with the sitting area;the adsorption force of sandy and simulated soils is about 50%and 80%of that of the sea-tested soils;the smoother the base material is,the smaller the adsorption force is.[Conclusion]The research in this paper can improve the design efficiency of submarine structures in China.

关 键 词：海底结构物 模型试验 坐底吸附力 负孔隙水压力 影响因素 

分 类 号：U661.4[交通运输工程—船舶及航道工程] P754.3[交通运输工程—船舶与海洋工程]