铁道建筑
鐵道建築
철도건축
RAILWAY ENGINEERING
2014年
12期
43-46
,共4页
重载铁路%列车活载%隧底加固%注浆
重載鐵路%列車活載%隧底加固%註漿
중재철로%열차활재%수저가고%주장
Heavy haul railway%T rain live load%T unnel reinforcement%Grouting
山西中南部铁路通道将开行30 t轴重列车，荷载计算与有限元数值分析表明，列车轴重增加后位于富水软弱围岩及土质地层段隧道基底应力增大，在列车活载反复作用下隧道底部易形成病害。本文论述了对已先期建成的隧道进行基底加固的必要性，论证了采用隧底注浆方案进行基底加固合理可行。
山西中南部鐵路通道將開行30 t軸重列車，荷載計算與有限元數值分析錶明，列車軸重增加後位于富水軟弱圍巖及土質地層段隧道基底應力增大，在列車活載反複作用下隧道底部易形成病害。本文論述瞭對已先期建成的隧道進行基底加固的必要性，論證瞭採用隧底註漿方案進行基底加固閤理可行。
산서중남부철로통도장개행30 t축중열차，하재계산여유한원수치분석표명，열차축중증가후위우부수연약위암급토질지층단수도기저응력증대，재열차활재반복작용하수도저부역형성병해。본문논술료대이선기건성적수도진행기저가고적필요성，론증료채용수저주장방안진행기저가고합리가행。
Heavy haul train with an axle load of 30 t will be put into service at the Shanxi-Henan-Shandong railway thoroughfare. T he results of loading calculation and finite element analysis indicate at water-rich area with weak surrounding rocks and soil,such axle load may increase the strain of the tunnel foundation. U nder such conditions, tunnel defaults may occur under the train live load. T he paper elaborates the necessities in the reinforcement of pre-inforced tunnel and proposes that grouting approach is to be used to resolve the concern.
