大跨径劲性骨架拱桥过程控制与后评价研究  

Study on process control and post-evaluation of long-span stiffen framework arch bridge

作　　者：郭琦[1] 李春轩 王贤良[3] 闫雯[1] 

机构地区：[1]西安建筑科技大学教育部结构与抗震重点实验室,陕西西安710055 [2]陕西通宇公路研究所有限公司,陕西西安710075 [3]陕西省安康公路管理局,陕西安康725000

出　　处：《广西大学学报（自然科学版）》2013年第1期106-110,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51108372);高等学校博士学科点专项科研基金项目(20106120120001);陕西省教育厅专项科研计划项目(12JK0904)

摘　　要：为了在施工过程中实现最优控制以达到合理成桥状态,并量化评价控制效果,以一座采用缆索吊装的主跨150 m采用钢管混凝土格构柱作为劲性骨架箱肋拱桥为背景工程开展了专项研究。结合劲性骨架的吊装顺序以及外包混凝土分环分段施工工序的调整与控制方法,得到了综合控制的关键技术措施,包括缆索吊装过程的仿真分析、现场实测、参数识别、过程控制与纠偏等,实现了钢管混凝土劲性骨架拱桥施工控制中多层面、分层次监测与控制流程系统的综合应用。通过实施运营监测与控制效果后评价,结果表明:相对设计目标状态而言,拱肋线形、应力平均偏差分别为4.6%和5.8%,且运营一年后相对成桥同环境温度状态而言,均未发生明显变化。这一综合技术为同类桥型的控制应用奠定了基础。In order to realize optimal control in the construction process to obtain reasonable de- signed state and evaluate its effect quantitatively, a specialized research was conducted on a rein- forced concrete box arch bridge with a stiffen framework of concrete-filled steel （CFST） and a main span of 150 m. The research focused on key techniques used in the control procession, such as sim- ulation on erection, filed testing, parameter identification, and procedure adjustment. Synthetic ap- plication to the monitoring and controlling system for reinforced concrete arch bridge with the stiffen framework of CFST was realized ultimately. Through the monitor tracking and post-evaluation of con- struction control, the results show that the deviations on shape and stress of the arch rib were 4.6 and 5.8 percent separately, and after a year of monitor tracking with a similar temperature at which the bridge was constructed, they were not changed significantly. Therefore, this technique lays a foundation for the application on the same type of bridges

关 键 词：劲性骨架 拱桥 施工控制 后评价 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]