山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2014年
17期
175-176
,共2页
软岩隧道%钢拱架%“S”形变形%变形分析
軟巖隧道%鋼拱架%“S”形變形%變形分析
연암수도%강공가%“S”형변형%변형분석
soft rock tunnel%steel lagging jack%S-shaped deformation%deformation analysis
围绕云桂铁路软弱隧道的初支“S”形变形，通过力学、支护、监测与数值模拟对比分析，研究了隧道初期支护中钢拱架“S”形变形的原因，得出围岩应力分布不同时，必然会导致不均匀变形来释放应力，钢拱架连接钢板以上50 cm ~150 cm 范围内，钢架刚度不足会呈现“S”形变形的结论。
圍繞雲桂鐵路軟弱隧道的初支“S”形變形，通過力學、支護、鑑測與數值模擬對比分析，研究瞭隧道初期支護中鋼拱架“S”形變形的原因，得齣圍巖應力分佈不同時，必然會導緻不均勻變形來釋放應力，鋼拱架連接鋼闆以上50 cm ~150 cm 範圍內，鋼架剛度不足會呈現“S”形變形的結論。
위요운계철로연약수도적초지“S”형변형，통과역학、지호、감측여수치모의대비분석，연구료수도초기지호중강공가“S”형변형적원인，득출위암응력분포불동시，필연회도치불균균변형래석방응력，강공가련접강판이상50 cm ~150 cm 범위내，강가강도불족회정현“S”형변형적결론。
On the initial support S-shaped deformation of weak tunnel along Kunming-Nanning Railway,the paper researches the reasons for the deformation of the S-shaped steel lagging jack in the tunnel initial support by the comparison and analysis of the dynamics,the support,the super-vision and the numeric simulation,concludes the stress can be released in the uneven deformation caused by the various stress distribution of sur-rounding rock,and concludes the insufficient steel structure strength leads to the S-shaped deformation when the steel lagging jack continuous steel plate between 50 cm ~ 150 cm.
