砂卵石地层盾构隧道施工地表沉降槽宽度系数分析

发布时间：2018-04-21 04:47

本文选题：铁路隧道 + 沉降槽宽度　；参考：《铁道建筑》2017年06期

【摘要】：首先对比分析当前沉降槽宽度的计算方法,优选出O'ReillyNew经验公式。然后通过成都地铁7号线现场实测地表沉降数据对O'ReillyNew经验公式进行修正,得出地表沉降最大值,绘制沉降曲线,从而达到预测地表沉降的目的。经成都地铁3号线的实测数据验证,修正后的经验公式能较为准确地计算出沉降槽宽度,适用于砂卵石地层盾构隧道地表沉降的预测。
[Abstract]:Firstly, the O'ReillyNew empirical formula is selected by comparing and analyzing the calculation method of the current settlement tank width. Then the empirical formula of O'ReillyNew is modified by the measured ground subsidence data of Chengdu Metro Line 7. The maximum value of surface subsidence is obtained and the settlement curve is drawn to predict the surface subsidence. Based on the measured data of Chengdu Metro Line 3, the modified empirical formula can accurately calculate the width of settlement trough, which is suitable for predicting the ground subsidence of shield tunnel in sand and pebble strata.
【作者单位】：中国铁道科学研究院;中铁西南科学研究院有限公司;西南交通大学土木工程学院;
【分类号】：U455.43

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