路堤填土对无桥台斜腿刚架桥的拱式效应分析  

Analysis of Arch Effect of Embankment Fillings on the Non-abutment Slant-legged Rigid Frame Bridges

作　　者：康俊涛[1] 王国鼎[2] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《中国市政工程》2007年第3期48-49,共2页China Municipal Engineering

摘　　要：无桥台斜腿刚架桥类似于折线拱桥,桥梁两端边斜杆上土的作用实际上形成了一对拱推力。针对路堤填土对结构的拱效应问题,采用Winker地基模型,分析土对该桥型结构的影响,其内力、位移的影响变化范围约为10%,路堤填土越好,对结构越有利。The non-abutment slant-legged rigid frame bridge is similar to mansard arch bridge,the soil pressure of the diagonal rod at both ends of bridge forms a couple of arch thrust.To analyze the arch effect of embankment fillings on structure,based on Winker soil model,the calculation model is built on analyzing the influence rule of soil pressure on this bridge type structure.The results indicate that the scope of internal force and displacement influence is approximately 10%,at the same time,on the other hand,the better texture of embankment fillings,the more available to structure.

关 键 词：无桥台斜腿刚架桥 拱式效应 路堤填土 

分 类 号：U448.232[建筑科学—桥梁与隧道工程]