摘要
凸形地梁锚固是连续配筋混凝土路面 ( CRCP)端部处理中一种简单、实用的型式 ,采用有限元法计算与分析了锚固力作用下凸形锚固地梁的应力和位移。以端墙顶端位移、端墙最大拉应力和路面板最大拉应力为主要控制指标 ,提出了墙高、端墙间距、墙宽的确定方法 ,分析了土基弹性模量、端墙高度、端墙间距、端墙个数等参数对计算结果的影响。用室内模型试验对有限元结果进行了验证 ,并给出了供 CRCP端部锚固设计使用的诺谟图。还发现了墙后土压力的分布形式 ,从而推翻了以往错误的墙后土压力分布假设 ,对得出准确的计算结果有重要意义。
The transverse trence lug anchorage is a simple and useful style of end-anchorages for the continuously reinforced concrete pavement(CRCP).This paper computes and analyzes the movement and stress of lugs under the force caused by the rise of the temperature through the finite element method.It decides the movement at the top of lugs,the largest stress of the lugs and the pavement as the controlling criteria,puts forward the method to decide the height,width and distance of the lugs,analyzes the effects of such parameters as the elastic modulus of soil and the height,distance and number of lugs on the movement and stress of the lugs,testifies the results from finite element method by the test in labs,and provides the design graphes of the end anchorage of CRCP for designers.This paper discovers the distribution of the soil pressure on the lugs,which overthrows the wrong distribution supposition made before,and has improved the accuracy of the results to a great extent.Some important conclusions are presented.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第3期1-5,共5页
Journal of Chang’an University(Natural Science Edition)
基金
国家自然科学基金资助项目 ( 5 97780 49)
