框架优化型Ⅲc轨枕道床横向阻力试验研究  

Experimental Study on Lateral Resistance of Optimized Ⅲc Sleeper with Different Frame Types

作　　者：井国庆[1] 付豪 贾文利 姚力[2] 林红松[2] JING Guoqing;FU Hao;JIA Wenli;YAO Li;LIN Hongsong(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;China Railway Eryuan Engineering Group Co.Ltd.,Chengdu 610031,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《西南交通大学学报》2018年第4期727-732,共6页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(U1234201)

摘　　要：为对标准Ⅲc型轨枕进行外形优化及揭示轨枕优化前后道床横向阻力特性,针对Ⅲc型轨枕特定部位增设混凝土加宽(加厚)块,形成3种框架式轨枕,结合道床横向阻力测试实验,分析对比不同道床断面形式下(砟肩宽度300 mm堆高0 m;砟肩宽度500 mm堆高0 m;砟肩宽度500 mm堆高150 m)各框架轨枕与标准Ⅲc型轨枕道床横向阻力数值.研究结果表明:在不同道床断面型式下,各型框架轨枕均能有效增大道床横向阻力,相较于标准Ⅲc型轨枕,A型框架轨枕(轨枕承轨台双翼缘型)可提升道床横向阻力37.8%～50.8%,B型框架轨枕(枕中截面十字型)可提升道床横向阻力25.5%～41.0%,C型框架轨枕(轨枕承轨台下底部加厚型)可提升道床横向阻力13.3%～23.0%.To optimize the geometry of theⅢc mono-block sleeper and reveal the variation characteristics of the ballast bed lateral resistance before and after optimization,three different frame sleepers were designed and fabricated by adding concrete blocks to specific parts of theⅢc mono-block sleeper.Based on the ballast bed lateral resistance test,The frame sleepers andⅢc mono-block sleeper were compared for different ballast bed cross-sections(shoulder width 300 mm,shoulder height 0 mm;shoulder width 500 mm,shoulder height 0 mm;shoulder width 500 mm,and shoulder height 150 mm).The study shows that each frame sleeper can effectively increase lateral resistance with different ballast bed cross-sections.Furthermore,compared with theⅢc mono-block sleeper,there is 37.8%-50.0%increase in lateral resistance for frame sleeper type A(end-winged sleeper),25.5%-41.0%increase for frame sleeper type B(middle-winged sleeper),and 13.3%-23.0%increase for frame sleeper type C(bumped sleeper).

关 键 词：道床横向阻力 框架轨枕 断面尺寸 

分 类 号：U211.2[交通运输工程—道路与铁道工程]