Critical construction technology and analysis of steel box girder jacking for urban viaducts under site environmental constraints

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Apr.2026, Vol.49 No.4: 547-556

DOI: 10.3969/j.issn.1003-5060.2026.04.016

Authors

XU Shizheng $ ^{1} $, CHENG Qianyong $ ^{2} $, WANG Jingfeng $ ^{2} $, YE Shengbin $ ^{3} $, SHEN Qihan $ ^{2} $, SUN Baichuan $ ^{3} $

(1. Anhui Construction Engineering Road Port Construction Group Co., Ltd., Hefei 230022, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 3. Hefei Key Project Construction Administration, Hefei 230051, China)

Abstract and Keywords

Abstract: With the rapid urban development in China, urban renewal and upgrading have become essential. As an important part of the urban transportation network, urban viaducts encounter pronounced challenges due to site environmental constraints during their renewal and upgrading. Aiming at investigating the critical jacking construction technology for urban viaducts under site environmental constraints, based on the construction of Hefei Wenzhong Road Viaduct Project, and taking into account its proximity to operating subway and urban arterial roads, this paper systematically designs and analyzes the steel box girder jacking. It establishes fundamental design principles for the jacking scheme as well as jacking force system, guide beam and support system, sliding system, and control system. A numerical analysis model for the steel box girder jacking construction under site environmental constraints is developed to identify the most unfavorable construction conditions. Furthermore, the construction monitoring is performed to define the principles for arranging key monitoring points and to outline the critical procedures. The research can provide theoretical basis and practical guidance for the construction of urban viaducts under site environmental constraints. reference for the construction of urban viaducts under site environmental constraints.

Keywords: urban bridge; steel box girder; jacking construction; construction design; numerical simulation; construction monitoring

作者信息

徐士征 $ ^{1} $，程谦勇 $ ^{2} $，王静峰 $ ^{2} $，叶圣彬 $ ^{3} $，沈奇罕 $ ^{2} $，孙百川 $ ^{3} $

(1. 安徽建工路港建设集团有限公司，安徽合肥 230022；2. 合肥工业大学土木与水利工程学院，安徽合肥 230009；3. 合肥市重点工程建设管理局，安徽合肥 230051)

摘要和关键词

摘要: 随着国家城市快速发展,城市更新升级势在必行。高架桥梁作为城市交通发展的主要代表之一,其更新升级面临的场地环境限制问题突出。为探究在场地环境限制下的城市高架桥梁顶推关键施工技术,文章依托合肥市文忠路高架桥快速路项目,基于其紧邻运营地铁和城市主干道现状,系统设计研究了钢箱梁顶推,规范了顶推方案、顶推动力系统、导梁和支撑系统、滑动系统、控制系统的基本设计原则。建立考虑场地环境限制影响的钢箱梁顶推施工数值分析模型,明确顶推施工最不利工况。开展钢箱梁顶推施工监测分析,确立了关键监测点布置原则和关键步骤。该研究旨在为场地环境限制下的城市高架桥梁建设提供了科学支撑和实践依据。

关键词: 城市桥梁；钢箱梁；顶推施工；施工设计；数值模拟；施工监控

Funding

国家自然科学基金资助项目（52278170）

合肥工业大学学报(自然科学版)

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