本文選題：鐵路隧道　切入點：設(shè)計優(yōu)化　出處：《鐵道建筑》2017年05期

【摘要】：通過對國內(nèi)外學者研究成果的歸納總結(jié),結(jié)合隧道工程特點,提出一種膨脹巖綜合分級標準。以玉(溪)蒙(自)鐵路秀山隧道為工程背景,采用ANSYS軟件分析中、強膨脹級別下膨脹力對初期支護的影響規(guī)律。結(jié)果表明:原設(shè)計中等膨脹工況膨脹范圍為4 m時最小加固范圍為6 m,強膨脹工況加固范圍太大,常規(guī)注漿工藝較難實現(xiàn);隧道斷面優(yōu)化后中等膨脹工況膨脹范圍為4 m時最小加固范圍為2 m,強膨脹工況膨脹范圍為3 m時最小加固范圍為4 m;隨膨脹級別升高,初期支護仰拱底鼓和邊墻收斂量增加;優(yōu)化后由于加固范圍減小,初期支護變形量增大。
[Abstract]:Through summing up the research results of scholars at home and abroad and combining the characteristics of tunnel engineering, a comprehensive classification standard of expansive rock is put forward. Taking the Xiushan tunnel of Yuxi Mongol (Zaizi) railway as the engineering background, the ANSYS software is used in the analysis. The effect of expansion force on the initial support under the strong expansion level. The results show that the minimum reinforcement range is 6 m when the expansion range of the original design is 4 m, and the strengthening range under the strong expansion condition is too large, so it is difficult to realize the conventional grouting technology. The minimum reinforcement range is 2 m when the expansion range of medium expansion condition is 4 m and 4 m when expansion range of strong expansion condition is 3 m after optimization of tunnel section, and the convergence amount of initial support inverted arch floor and side wall increases with the increase of expansion level. After optimization, the initial support deformation increases due to the decrease of reinforcement range.
【作者單位】： 石家莊鐵道大學土木工程學院;江蘇建筑職業(yè)技術(shù)學院;西南交通大學土木工程學院;
【基金】：國家科技支撐計劃(2012BAG05B01) 江蘇建筑職業(yè)技術(shù)學院科技項目(JYA14-19,JYA315-10)
【分類號】：U455.7

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1 張穎鈞，，王小軍;云臺山隧道膨脹巖的膨脹特性[J];中國鐵道科學;1994年02期

2 王占龍;烏鞘嶺左線隧道膨脹巖地段施工技術(shù)[J];鐵道建筑技術(shù);2004年S1期

3 趙峰;;膨脹巖隧道設(shè)計施工方案探討[J];交通世界(建養(yǎng).機械);2010年Z1期

4 楊建華;;隧道膨脹巖地段施工技術(shù)及質(zhì)量控制[J];中國高新技術(shù)企業(yè);2009年21期

5 孔慶暖;;隧道膨脹巖地段施工技術(shù)及質(zhì)量控制[J];山西建筑;2009年03期

6 ;[J];;年期

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