To understand the influence of the layout and geometric parameters of the lining concrete on the mechanical properties of multi-cell single-box girder bridges with corrugated steel webs, the Fenghua River Bridge is taken as an example. This is a single-box three-cell continuous girder bridge with corrugated steel webs that is the largest of its kind in China. It was used to establish the finite-element model in this paper. The results of this study suggest that the lining concrete single-side arrangement has good economic and mechanical properties. The influence of the geometric parameters of the lining concrete on the mechanical properties of the structure was studied using the finite-element model, and the length and thickness range of the lining concrete of the single-box multi-cell composite girder bridge with corrugated steel webs are provided. The research results provide useful suggestions for the design of lining concrete in real bridge projects, and thereby make up the gap in the existing code.

中文翻译：

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波形钢腹板多室组合梁桥衬砌混凝土设计

为了解衬砌混凝土布置及几何参数对多室波形钢腹板单箱梁桥受力性能的影响，以奉化江大桥为例。这是国内同类桥梁中最大的单箱三室波形钢腹板连续梁桥。它被用来建立本文的有限元模型。研究结果表明，衬砌混凝土单面布置具有良好的经济和力学性能。采用有限元模型研究了衬砌混凝土几何参数对结构力学性能的影响，给出了波形钢腹板单箱多室组合梁桥衬砌混凝土的长度和厚度范围。研究成果为实际桥梁工程中衬砌混凝土的设计提供了有益的建议，弥补了现有规范的空白。