摘要
该文叙述我国桥梁的发展情况,所达到的水平及今后发展方向。概论中提出考察技术进步的五个重要视点:即:1、桥型选择;2、材料选择;3、施工工艺;4、结构分析;5、方案综合。桥梁类别分三大体系,按桥面受力状态分,可分为九种桥型即:拱桥体系:斜腿刚架、拱桥、系杆拱;梁桥体系:简支梁、连续梁、悬臂梁;悬吊体系:斜拉桥、悬索桥、第九种桥。上述中八种已变为现实,唯第九种桥因找不到合适的材料去构成,尚在研究中。该文用上述5个视点去考察桥梁三大体系。考察结果是我国混凝土拱桥和钢拱桥达国际领先水平。我国梁桥体系已达国际水平,仍须总结提高。我国斜拉桥正在走向国际领先水平。我国悬索桥已达到国际先进水平。今后桥梁发展的方向是:1、各种桥型跨度的进步;2、施工工艺的进步;3、科学研究的进步。
The article describes the development conditions,achievements and the future development direction of the bridges in our country.In the description,five important inspecting points of the technical advance from the investigations are put forward,i.e.1.selection of bridge type,2.selection of materials,3.construction technology,4.analysis of structures,and 5.comprehension of schemes.The classification of the bridges is divided into three systems.According to the bearing status of the decks,the bridges can be divided into nine systems:the arched bridge system:inclined-leg rigid frame,arched bridge,bowstring arch;bridge system:simple supported beam,continuous beam,cantilever beam;suspension system:cable-stayed bridge,cable suspension bridge,the ninth bridge.Eight bridges above have come true.Only the ninth bridge is still under the study because of no material suitable for constitution.The article uses five inspecting points above to investigate three systems of the bridges.The investigating results are that the concrete arched bridge and the steel arched bridge in our country have reached the international leading level,the system of the bridges in our country has reached the international level and must be still summed up and enhanced,and the cable-stayed bridge in our country is approaching the international leading level and the cable suspension bridge has reached the international advanced level.The development direction of the bridges in the future is 1.advance of various bridge spans;2.advance of construction technologies;3.advance of scientific research.
出处
《城市道桥与防洪》
2006年第4期1-7,共7页
Urban Roads Bridges & Flood Control
关键词
桥梁
桥型
材料
施工工艺
结构分析
方案综合
bridge,bridge type,material,construction technology,analysis of structure,comprehension of scheme
