摘要
矢跨比是悬索桥设计中一个最为重要的设计参数,其大小对主索内力及塔柱内力都有很大的影响,在较大程度上影响主索所需截面面积、主塔所需高度等,从而影响单位桥长的造价。本文以龙南濂江景观桥(人行悬索桥)为工程背景,分析讨论了人行悬索桥的矢跨比对其静力特性的影响,得出了矢跨比与主索应力、主塔内力、加劲梁跨中挠度等的关系,为同类型桥梁的设计与计算提供了一定的参考。
The span ratio is one of the most important design parameters in suspension footbridge designing. It has a significant impact on internal forces of the main cable and tower. And it influences the sectional area of the main cable and the height of the main tower in a greater degree and thus to affect the cost of unit long bridge. This paper, by taking Longnan Lianjiang River landscape bridge（suspension footbridge） the engineering background,discusses the influence of the span ratio of suspension footbridge the static properties, obtaining the relations between the span ratio with the stress of the main cable, the internal force of the main tower, and the span deflection of the stiffening girder, etc. This study provides a reference for the design and calculation of the same type of bridge.
出处
《科技广场》
2015年第8期137-139,共3页
Science Mosaic
关键词
人行悬索桥
矢跨比
静力特性
主索
Suspension Footbridge
Span Ratio
Static Properties
Main Cable
