CFT轨枕钢管结合位置优化研究  

Research on the optimization binding site of CFT sleeper steel tube

作　　者：李启航 杜华 郭纬文 孙嘉良 LI Qihang;DU Hua;GUO Weiwen;SUN Jialiang(China Railway Siyuan Survey and Design Group Co.,Ltd,Wuhan 430063,China;Hubei Key Laboratory of Track Security Service,Wuhan 430063,China;School of Civil Engineering,Central South University,Changsha 410075,China;Jinhua Jinyidong Rail Transit Co.,Ltd,Jinhua 321000,China;China Railway Construction Corporation Limited,Beijing 10085,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]铁路轨道安全服役湖北省重点实验室,湖北武汉430063 [3]中南大学土木工程学院,湖南长沙410075 [4]金华市轨道交通集团有限公司,浙江金华321000 [5]中国铁建股份有限公司,北京100855

出　　处：《铁道科学与工程学报》2020年第6期1376-1381,共6页Journal of Railway Science and Engineering

基　　金：北京市科技计划资助项目(Z181100003918004);中国铁建股份有限公司科技研究开发计划资助项目(16-A01)。

摘　　要：由于钢管混凝土构件与混凝土轨枕块结合位置的设计尺寸对其在吊装与施工过程中受力影响显著,为研究钢管混凝土构件距离轨枕块底部的距离、钢管混凝土构件之间的间距,建立有限元模型分析钢管混凝土构件中心与混凝土轨枕块底部距离H分别取30,40,50和60 mm时混凝土轨枕的受力情况,同时分析2钢管混凝土构件中心距离L分别取140,150,160,170和180 mm时,混凝土轨枕的受力情况。计算结果表明:H取50 mm,L取150 mm时混凝土轨枕块受力最优。The design dimensions of the joint position of the concrete-filled steel tubular members and the concrete sleeper blocks have a significant influence on the stress in the process of hoisting and construction.To study the distance of the concrete-filled steel tubular members from the bottom of the sleeper block and the distance between concrete-filled steel tubular members,the finite element model was established to analyze the stress of the concrete sleeper when the distance H between the center of the CFT member and the bottom of the concrete sleeper block was 30,40,50 and 60 mm respectively and the stress of the concrete sleeper was analyzed when the central distance L of the two concrete-filled steel tubular members was 140,150,160,170 and 180 mm.The results showed that the stress of the concrete sleeper block was optimal when H is 50 mm and L is 150 mm.

关 键 词：钢管混凝土轨枕 有限元模型 受力性能 设计尺寸 

分 类 号：U213.244[交通运输工程—道路与铁道工程]