山东建筑大学学报2017，Vol.32Issue(2)：137-143,7.
变截面刚构桥主梁几何参数统计分析
Statistical analysis of main grider geometric parameters of variable cross-section rigid frame bridges
摘要
Abstract
The study on the value and inherent laws of the geometric parameters can provide some reference for bridge designers.Based on the data collected from the domestic and international bridges,the least-squares method was applied to regression analysis of the height-span ratio,side-main span ratio, thickness-span ratio, width ratio of top and bottom slab, the web thickness parameters of the pier-top and mid-span section varying over maximum span or bridge service time. The analytical results indicate that the side-main span ratio generally ranges from 0.53~0.55 during 2006~2015,which is a huge difference between 0.56 ~0.63 during 1989 ~2005,but does not obviously correlate with the maximum span.The web thickness of the mid-spansection for bridges with B≥200 m is approximately distributed in 40 ~50 cm,and the average level is lower than the web thickness during 1989~2005.The height-span ratio of the beam on the pillars and in the middle of span ranges from 1/15.4 to 1/18.1 and 1/42 to 1/58 respectively,which are higher than the levels in 1989~2005.The height-span ratio of the pier-top from the domestic increases with the maximum span,but the value from the foreign opposites.There is no convincing correlation between the width ratio of top to bottom slab and the maximum span.The average value of the width ratio of top and bottom slab is 1.83 during 2006~2015,less than 1.94 during 1994~2005.The thickness parameters of the web with the pillars and the middle of span deviate from the optimal value during 2006~2015, and the latter deviates more.During 1988 ~2005,the thickness parameter of the pier-top web is agreement with the optimal value K1 .关键词
变截面刚构桥/主梁几何参数/最小二乘法/回归分析Key words
variable cross-section rigid frame bridge/geometric parameters of main grider/least-squares method/regression analysis分类
交通工程引用本文复制引用
徐刚年,王有志,安然,袁泉,尤伟杰,张涛,王来永,武俊彦..变截面刚构桥主梁几何参数统计分析[J].山东建筑大学学报,2017,32(2):137-143,7.基金项目
国家自然科学基金项目(11372165) （11372165）
交通运输部西部交通建设科技项目(2011318223940) （2011318223940）
