单索面超宽箱梁混凝土斜拉桥主梁施工阶段的挠度验算及控制  

Checking Calculation and Control of Deflection in Construction Period of Main Girder for Single-plane Ultra-wide Box Girder Concrete Cable-stayed Bridge

作　　者：潘宣亦 

机构地区：[1]上海公路桥梁(集团)有限公司,上海市200433

出　　处：《城市道桥与防洪》2018年第10期142-144,共3页Urban Roads Bridges & Flood Control

摘　　要：主梁如何确定预拱度,并在施工中如何严格监测监控主梁线形及主塔变形,是该工程施工阶段的重中之重。利用MIDAS/Civil软件建模,对肇庆阅江大桥主桥悬臂浇筑进行有限元模拟,对监控给出的施工节段主梁挠度进行验算,并确立主梁施工阶段挠度测量、控制方法,应用于实践,确保主桥建设顺利进行。监控监测成果满足设计要求,达到预期目标,可供类似工程参考和借鉴。The main girder how to determine the camber and how to strictly monitor and inspect the alignment of main girder and the deformation of main pylon is the priority among priorities of this engineering construction stage. The software MIDAS/Civil is used to establish the model to simulate the cantilever pouring of the main bridge for Yuejiang River Bridge of Zhaoqing, to check and calculate the monitored deflection of the main girder in the construction stage, and to determine the deflection measurement and control method in the construction stage of main girder. These are applied in the practices to ensure the smooth construction of the main bridge. The monitoring and inspection results satisfy the design requirements and achieve the anticipated goal, which can be referred for the similar projects.

关 键 词：单索面 超宽箱梁 混凝土斜拉桥 MIDAS/Civil建模 挠度 

分 类 号：U445[建筑科学—桥梁与隧道工程]