摘要
首先对比分析当前沉降槽宽度的计算方法,优选出O'Reilly&New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'Reilly&New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。
The existing methods to calculate the settlement trough width are compared and the O＇reilly Newempirical formula outweighs. This formula is corrected based on the measured ground surface settlement of Chengdu Metro line 7. The maximum settlement value is obtained. A settlement curve is drawn,which may be used to predict the ground surface settlement. This corrected formula is validated by the measured ground surface settlement of Chengdu Metro line 3. The settlement trough width may be calculated accurately with this corrected formula. It may be applied to predict the ground surface settlement of the shield-driven tunnel in sandy cobble stratum.
作者
周帅
龙杰
ZHOU Shuai LONG Jie(China Academy of Railway Sciences, Beijing 100081, China China Railway Southwest Research Institute Co., Ltd Chengdu Sichuan 611731, China School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China)
出处
《铁道建筑》
北大核心
2017年第6期73-76,共4页
Railway Engineering
关键词
铁路隧道
沉降槽宽度
统计分析
砂卵石地层盾构隧道
经验公式法
Railway tunnel
Settlement trough width
Statistical analysis
Shield-driven tunnel in sandy cobble stratum
Empirical formula method
