| 大连地铁隧道施工的Peck公式改进 |
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| 引用本文： | 杨清源,麻凤海,胡国栋,郭循杰.大连地铁隧道施工的Peck公式改进[J].辽宁工程技术大学学报(自然科学版),2012(2):159-162. |
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| 作者姓名： | 杨清源 麻凤海 胡国栋 郭循杰 |
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| 作者单位： | 大连大学建筑工程学院,辽宁大连116622 |
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| 基金项目： | 辽宁复杂条件(深部急倾斜)矿区煤层开采灾害预测研究基金资助项目(20092142) |
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| 摘 要： | 为研究地铁隧道施工引起地表沉降问题,以大连地区地铁隧道开挖大量地表沉降实测数据为基础,运用数学方法,在Peck公式中引入两个修正系数:α(地表最大沉降修正系数)及β(沉降槽宽度修正系数),使之适用于大连地质条件下研究区间工况.通过大量实测数据分析,结果表明:当沉降槽宽度修正系数值β和地表最大沉降修正系数值α分别位于0.5～1.0、0.5～0.9之间时,得到的Peck曲线与原始Peck公式预测曲线相比,更加吻合地表沉降实测数据,预测效果更优.
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| 关 键 词： | 地铁 地表沉降 Peck公式 回归分析 修正系数 曲线拟合 沉降槽宽度 地表最大沉降量 |
Improvement of Peck formula in subway construction under typical geological conditions |
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| YANG Qingyuan,MA Fenghai,HU Guodong,GUO Xunjie.Improvement of Peck formula in subway construction under typical geological conditions[J].Journal of Liaoning Technical University (Natural Science Edition),2012(2):159-162. |
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| Authors: | YANG Qingyuan MA Fenghai HU Guodong GUO Xunjie |
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| Institution: | (College of Civil and Architectural Engineering,Dalian University,Dalian 116622,China) |
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| Abstract: | There are many analytical methods for estimating surface subsidence caused by subway construction.In this study,the estimation method used is to select a representative geological condition,combine it with actual construction site,and sum up with the same type of geological conditions in some areas.The study develops an improved Peck formula by introducing two correction factors: the maximum surface subsidence correction coefficient,and the width of settlement trough correction factor.Through regression analysis,it is found that when β is between 0.5~1.0,and α is between 0.5~0.9,a more accurate prediction curve can be obtained. |
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| Keywords: | subway surface subsidence Peck formula regression analysis correction factor curve fitting maximum surface subsidence width of settlement trough |
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