摘要
以近年来大量建造的整体钢桥面板桁组合结构为研究对象,针对初步设计采用精细化计算方法耗时长,计算工作量巨大的缺点,提出了简化的空间杆系结构法(简称SF法)和主桁平面分解法(简称PF法);系统研究了SF法和PF法的简化原则,剖析了其计算要点;最后针对1座铁路整体钢桥面板桁组合梁桥,利用ANSYS分别建立了2种简化计算模型,并与空间板梁模型(简称SPB模型)计算结果进行了对比。分析表明:PF法可以满足初步设计的要求,而SF法可用于设计中期和后期;SF法和PF法均具有较高的计算精度,验证了SF法和PF法的有效性。
The plate-truss composite structure with monolithic steel bridge deck which has been built in large quantity in recent years was cited as a research object in this paper. Then, aiming at the two disadvantages that the calculation period would be longer and the calculation content would be complex if the detailed calculation method was used in preliminary design, this paper suggested the simplified spatial frame structure method （SF method） and the main truss plane frame decomposition method （PF method）. Further, this paper systematically investigated and analyzed the simplification principle and the key points for the SF method and PF method. Finally, taking a railway plate-truss composite girder bridge with monolithic steel bridge deck as an example, this paper build the SF model and the PF model respectively by ANSYS software, in comparison with the calculation result of the spatial plate-beam model （SPB model）. The analysis results indicate that the PF method could satisfy the requirements of preliminary design while the SF method could be applied in the interim design stage and the late design stage; both the SF method and PF method have enough high accuracy, therefore the effectiveness of the two methods is proved.
出处
《铁道标准设计》
北大核心
2013年第3期34-38,共5页
Railway Standard Design
基金
铁道部科技开发重大课题(2009G004-B)
清华大学土木工程防灾与耐久教育部重点试验室开放基金项目资助
关键词
桥梁工程
组合结构
空间杆系结构法
主桁平面分解法
整体钢桥面
bridge engineering
composite structure
spatial frame structure method
main truss planeframe decomposition method
monolithic steel bridge deck
