软土地区盾构隧道掘进引起的地表沉降预测修订
PDF下载 (345)杨芬1,王冠琼2,刘干斌1,叶俊能.软土地区盾构隧道掘进引起的地表沉降预测修订[J].宁波大学学报(理工版),2016,29(1):113-117.DOI:
YANG Fen1,WANG Guan-qiong2,LIU Gan-bin1*,YE Jun-neng2.Modifications of Ground Surface Subsidence Prediction for Shield Tunnel Construction in Soft Soil[J].Journal of Ningbo University(Natural Science & Engineering Edition),2016,29(1):113-117.DOI:
| Title: | Modifications of Ground Surface Subsidence Prediction for Shield Tunnel Construction in Soft Soil |
| 作者: | 杨芬1, 王冠琼2, 刘干斌1, 叶俊能 |
| Author(s): | YANG Fen1, WANG Guan-qiong2, LIU Gan-bin1*, YE Jun-neng2 |
| 关键词: | 盾构隧道; 地表沉降; Peck公式; 回归分析; 修订系数 |
| Keywords: | shield tunnel; surface subsidence; Peck formula; regression analysis; revision coefficient |
| 分类号: | U231 |
| 文献标识码: | A |
| 摘要: | 在盾构隧道施工时, 地表沉降的Peck公式预测结果往往因地质条件的不同而与实测结果差异较大. 为此研究基于宁波轨道交通1号线地表沉降实测数据, 利用最小二乘和一元线性回归法, 确定了盾构隧道地表沉降槽宽度系数K和地层损失率Vl的取值范围, 并引入了地表最大沉降修订系数α和沉降槽宽度修订系数β对Peck公式进行修订. 结果表明: 宁波软土盾构隧道地表沉降槽宽度系数K范围为0.6~0.9, 建议取0.75, 地层损失率Vl范围为1%~3%, 建议取2%; 当修订系数α取1.2, β取0.8时, 能够获得比Peck公式更好的预测效果. |
| Abstract: | In the process of constructing shield tunnels, the result of prediction with Peck formula for ground surface subsidence shows great disagreement with the result measured under different geological conditions. Therefore, based on the measured data of ground surface subsidence in Ningbo Rail Transit Line 1, the range of trough width coefficient K of the ground surface settlement and the ground loss rate Vl of shield tunnel in soft soil of Ningbo are determined in this paper using the least square method and monadic linear regression. The coefficients of the maximum ground surface settlement α and the settlement trough width β are introduced and the Peck formula is modified. It is shown that the range of the surface settlement trough width coefficient K is between 0.6~0.9, and Vl is between 1%~3%, and 0.75 and 2% for K and Vl is recommended, respectively. When the value of α and β takes 1.2 and 0.8, respectively, a better prediction result can be obtained compared with the original Peck prediction formula |
| 参考文献 /References: | [1].PECK R B. Deep excavations and tunneling in soft ground [C]//Petrasovits G, Mecsi J. Proceeding of 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico City: State of the Art Volume, Sociedad Mexicana de Mecanica de Suelos, A C, 1969:225-290. [2].姚爱军, 赵强, 管江. 基于北京地层地铁隧道施工的Peck公式的改进[J]. 地下空间与工程学报, 20104):789-793. [3].胡斌, 莫云, 胡新丽. Peck法在武汉地铁隧道地表沉降预测中的适用性分析[J]. 工程勘察, 20127):6-10. [4].潘海泽, 蒋冰玉, 黄涛. Peck公式在天津隧道盾构施工地面沉降预测中的适用性分析[J]. 测绘科学, 20103):53-55. [5].冯晓光, 任建喜, 王金华. 西安黄土地层盾构施工的Peck公式修订[J]. 西安科技大学学报, 20123):343- 347. [6].杨清源, 麻凤海, 胡国栋. 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, 31(2):159-162. [7].ATTEWELL P B, YEATES J, SELBY A R. Soil move- ments induced by tunnelling and their effects on pipelines and structures[M]. Glasgow: Blackie, 1986:10-50. [8].盛骤, 谢式千, 潘承毅. 概率论与数理统计[M]. 北京高等教育出版社, 2011244-257. |
| 备注/Memo: | 收稿日期: 2014?09?05. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 宁波市科技计划项目（2013C50005）; 浙江省中青年学科带头人学术攀登项目（pd2013096）. 第一作者: 杨芬（1990－）, 女, 浙江丽水人, 在读硕士研究生, 主要研究方向: 软土地下工程. E-mail: 790147849@qq.com *通信作者: 刘干斌（1976－）, 男, 江西吉安人, 博士/教授, 主要研究方向: 软土地下工程. E-mail: Liugb76@163.com 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
