超宽幅梁拱组合钢结构景观拱桥施工关键问题研究  

Study on Key Construction Problems of Super Wide Beam-arch Composite Steel Structural Landscape Arch Bridge

作　　者：黄华 蒲少杰 李小祥[2] HUANG Hua;PU Shaojie;LI Xiaoxiang

机构地区：[1]深圳市前海建设投资控股集团有限公司,广东深圳518000 [2]同济大学,上海市200082

出　　处：《城市道桥与防洪》2022年第10期131-135,M0014,共6页Urban Roads Bridges & Flood Control

摘　　要：城市桥梁不仅需要满足基本的通行需求,其建筑造型还应符合建设环境的景观协调性。异形拱桥因其结构受力优异、造型轻盈美观,多作为城市景观桥梁的主要比选桥型。基于深圳梦海前湾河桥的结构特点和施工工艺,介绍了一种梁拱结合体系桥梁在预制和安装阶段保障主梁、异形拱肋线形、应力、吊杆力和临时支撑安全的关键技术,并通过空间有限元分析指导全过程施工监控。根据实测反馈数据,大桥线形、吊杆力误差均在允许范围内,施工精度良好,景观效果也达到了预期目标。Not only the urban bridge needs to meet the basic traffic demand, but also its architectural modeling should conform to the landscape coordination of the construction environment. Due to its excellent structural stress, and its light and beautiful shape, the special-shaped arch bridge is mostly used as the main bridge type of urban landscape bridges for comparison. Based on the structural characteristics and construction technology of Menghai Qianwan River Bridge in Shenzhen, the key technologies of a beam-arch combined system bridge to ensure the safety of the alignment, stress, suspender force and temporary support of the main girder and special-shaped arch rib in the prefabrication and installation stages, and the whole process of construction monitoring is guided through the spatial finite element analysis. According to the measured data, the errors of bridge alignment and suspender force are all within the allowable range. The construction accuracy is good, and the landscape effect has also reached the expected goal.

关 键 词：异形拱桥 梁拱结合体系 施工 有限元仿真 施工监控 BIM 

分 类 号：U445[建筑科学—桥梁与隧道工程]