厚抛石基床重力式码头结构应力分布规律研究  

Stress distribution of deep rubble-bedding foundation for gravity quay

作　　者：丁泽祥 别社安[2] 朱铭 徐韬 DING Zexiang;BIE Shean;ZHU Ming;XU Tao(Jiangxi Vocational and Technical College of Communications,Nanchang 330013,China;Tianjin University,Tianjin 300072,China)

机构地区：[1]江西交通职业技术学院,江西南昌330013 [2]天津大学,天津300072

出　　处：《水运工程》2024年第12期57-62,共6页Port & Waterway Engineering

基　　金：江西省教育厅科学技术研究项目(GJJ214614)。

摘　　要：针对现行规范未系统性研究厚抛石基床重力式码头设计技术标准的问题,进行厚抛石基床重力式码头受力状态、设计方法和理论的研究。结合典型的厚抛石基床重力式码头工程实例,采用理论分析、数值模拟、设计计算方法分析等方法,揭示厚抛石基床应力分布规律,提出厚抛石基床应力的改进算法、基槽开挖底宽和基槽抛石体断面的上限和下限取值以及厚抛石基床判别标准。结果表明:基床应力并不是从前趾向前按照1:1.5扩散线传递,随着深度加深,应力分布呈现前大后小、前后相近、前小后大的变化趋势;基床应力改进方法较规范计算方法大有改善;明确了厚抛石基床的判别标准。研究结论丰富了厚抛石基床重力式码头设计理论,可为同类型工程设计提供借鉴与参考。To solve the problem that the design technical standard of the deep rubble-bedding foundation for gravity quay is not systematically studied.The stress state,design methods and theories of gravity quay with the deep rubble-bedding foundation have been studied.Based on the introduction for a typical gravity quay with a deep rubble-bedding foundation,this paper used theory analysis,numerical simulation and design calculation methods to study on the optimization design of the deep rubble-bedding foundation for gravity quay.The stress distribution laws of the deep rubble-bedding foundation is summarized,an improved algorithm is proposed for the stress of the deep rubble-bedding foundation,the upper and lower limit values of the bottom width of foundation trench excavation and the cross-section of riprap body in foundation trench,the identification criteria of the deep rubble-bedding foundation are proposed.The results show that the stress of the deep rubble-bedding is not within the slope line of 11.5 on the front side of the front toe,and with the deepening of the depth,the the stress distribution shows a trend of increasing in the front and decreasing in the back,similar in the front and back,and decreasing in the front and increasing in the back.The improved algorithm is much better than the standard method,the discrimination standard of the deep rubble-bedding foundation is defined.The research conclusion enriches the design theory of gravity quay,which provides reference and guidance for similar engineering designs.

关 键 词：重力式码头 厚抛石基床 结构优化 判别标准 

分 类 号：U652[交通运输工程—港口、海岸及近海工程]