摘要
对桥梁结构进行分析及简化,提出了基于OpenFlight模型的通用桥梁建模方法,将梁式桥、斜拉索桥、拱桥和悬索桥统一为一种通用的模型结构,并分别针对桥梁箱体结构、主缆、索塔、护栏等典型部件的热特性,综合考虑各种自然因素,建立桥梁红外辐射特性计算理论模型,并以图像的灰度信息模拟红外辐射特性,开发了通用的桥梁红外辐射特性计算及成像仿真软件系统,实现了任意时刻、任意地理位置、任意气象条件下不同类型桥梁的红外辐射特性模拟。实验结果表明提出方法与现有桥梁红外成像仿真结果具有一致性,符合典型桥梁的红外热辐射规律。
A new general modeling method for bridge based on the OpenFlight model is proposed by analyzing and simplifying the structure of bridge, making the girder-type bridge, suspension bridge, arch bridge and cable bridge a general model structure. Aiming at heat characteristics of box girder, cable, railing and other typical part of bridge, the computational model for infrared radiation characteristics is built by considering a variety of natural factors, which can be simulated through image gray information. Moreover, a general software system is developed. Experimental results show that the method can effectively simulate the infrared radiation characteristics of bridge at any time, any geographical position and any meteorological environment.
出处
《光电工程》
CAS
CSCD
北大核心
2013年第10期54-62,共9页
Opto-Electronic Engineering
基金
中科院光电信息重点实验室开放基金(OEIP-O-201204)
