摘要
以某跨径布置为(20+70+20)m中承式系杆拱桥为工程背景,基于施工过程有限元仿真分析和施工过程现场控制对该类桥梁施工控制关键技术进行了研究。根据现场实测值和有限元分析可以精确确定中承式系杆拱桥的吊索无应力长度。通过有限元仿真分析,兼顾体系转换施工的经济性和安全性原则确立了中承式系杆拱桥的体系转换施工方案。通过施工过程仿真分析和体系转换施工控制过程方案的研究,准确确定了工程背景中承式系杆拱桥的相关施工控制参数,有效地实现拱桥主梁从支架受力向缆索体系受力的体系转换,相关方法可为类似工程的施工控制提供借鉴。
In this paper,a half through tied bridge with a span of(20+70+20)m is selected as the sample of the required engineering background.Based on the finite element simulation analysis of the construction process and the on-site control of the construction process,the key technologies for the construction control of this type of bridge are studied.The results show that the unstressed length of the slings of the half through tied arch bridge can be accurately determined according to the field measured values and the finite element analysis.Through the finite element simulation analysis,the system conversion construction scheme of the half through tied arch bridge is established based on the principles of economy and safety of the system conversion construction,which can be used as guide for the actual construction process.Through the simulation analysis of the construction process and the research on the construction control process scheme of system conversion in this paper,the relevant construction control parameters of the through tied arch bridge in the engineering background are accurately determined,which effectively realizes the system conversion of the arch bridge main beam from the stress of the bracket to the stress of the cable system.The relevant methods can provide reference for the construction control of similar projects.
出处
《福建建设科技》
2022年第6期67-70,共4页
Fujian Construction Science & Technology
关键词
中承式系杆拱桥
施工控制
有限元模型
无应力长度
体系转换
Half through tied arch bridge
Construction control
Finite element model
Unstressed length
System transformation
