人民黄河2025，Vol.47Issue(6)：144-149,6.DOI:10.3969/j.issn.1000-1379.2025.06.022
输水盾构隧洞预应力双层衬砌结构力学响应
Mechanical Re-Sponse of Prestressed Double-Layer Lining Structure of Water Conveyance Shield Tunnel
摘要
Abstract
In order to explore the mechanical response of prestressed double-layer lining structure during the construction and operation of water conveyance shield tunnel,taking the Pearl River Delta Water Resources Allocation Project as an example,a three-dimensional calcula-tion model of double-layer lining structure was established by finite element numerical simulation method,and the bearing capacity character-istics of double-layer lining structure with or without prestress were analyzed.The results show that when the internal water pressure does not exceed 0.9 MPa,the ordinary double-layer lining structure can meet the safety requirements and does not need to apply prestress.When the internal water pressure is too large,it is necessary to apply prestress to the double-layer lining structure to give full play to its bearing capaci-ty.Compared with the pre-stressed tension stage,the coordinated bearing capacity of the segment lining and the pre-stressed lining is stronger and the contact pressure is more fully transmitted in the water-filled operation stage.During the whole construction and operation stages,the displacement variation of the double-layer lining structure is small,and it has a good working state.关键词
预应力双层衬砌/承载力学特性/有限元分析/输水盾构隧洞Key words
prestressed double-layer lining/characteristics of bearing capacity/finite element analysis/water conveyance shield tunnel分类
交通工程引用本文复制引用
刘畅,马晓斌,王士民,孟繁盛,陈昱弛..输水盾构隧洞预应力双层衬砌结构力学响应[J].人民黄河,2025,47(6):144-149,6.基金项目
国家自然科学基金资助项目(51991394) （51991394）
