地层非均质成层性对地下管道的变形影响

王雨; 陈文化; 王凯旋

doi:10.11779/CJGE201805015

地层非均质成层性对地下管道的变形影响 English Version

1. 北京交通大学土木建筑工程学院,北京 100044;
2. 中国安全生产科学研究院,北京 100012

详细信息

作者简介:
王雨(1989- ),男,博士研究生, 主要从事地下管道受力变形方面的研究工作。E-mail: wangyu198909@163.com。

计量
- 文章访问数: 0218
- HTML全文浏览量: 0
- PDF下载量: 0206
出版历程
- 修回日期: 2017-01-03
- 发布日期: 2018-05-24

Effect of soil stratification on deformation of buried pipelines

1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
2. China Academy of Safety Science and Technology, Beijing 100012, China

摘要

摘要: 地层成层性会对地下管道的变形产生重要影响,针对地层成层特性及管道变形规律的研究还很不成熟。基于弹性层状理论,利用传递矩阵法和有限差分法建立了能够考虑土体非均质条件下的地下管道变形计算方法。结合算例与传统理论法及FLAC^3D法进行对比验证,并进一步讨论了地基的成层特性及土体影响随深度的衰减规律。结果表明：管道下方首层土性对其力学反应的影响最为显著,各土层影响随其埋深的增加而逐渐减弱;未考虑土层成层性的均质化处理方法得到的计算结果,对于上软下硬地层偏于危险,而上硬下软地层偏于保守;考虑土层影响衰减规律的均质解与成层解较为接近,采用权重分析法得出的衰减函数符合负指数分布,上软下硬地层的影响衰减速度要快于上硬下软地层。
- 地层成层特性 /
- 地下管道 /
- 地面荷载 /
- 传递矩阵 /
- 有限差分法 /
- 衰减规律
Abstract: Soil stratification exerts an important influence on deformation of buried pipelines, and stratified characteristics and deformation laws still need further to be studied. A method for calculating deformation of pipelines is established based on the theory of elastic multi-layer foundation, considering the non-homogeneous features of soils by the transfer matrix method and the finite difference method. The results are compared with those of the traditional theory and FLAC^3D via examples. A further study is made to investigate the stratified features of soils and the attenuation laws with depth. The results show that the first underlying soil layer has a significant impact on mechanical response of pipelines and the influence of each layers decreases with the increase of its buried depth. The calculated results obtained by the homogenization method without consideration of the stratification features of soils are dangerous for the upper-soft and lower-hard strata and conservative for the upper-hard and lower-soft strata. The homogeneous solutions which take the attenuation laws of layered soils into account approach to those of stratification. The attenuation function obtained by the weight analysis method accords with the negative exponential distribution, and the attenuation rate in the upper-soft and lower-hard strata is much faster.
- stratified characteristic /
- buried pipeline /
- surface load /
- transfer matrix /
- finite difference method /
- attenuation law

HTML全文

参考文献(18)

[1]	李镜培, 丁士君. 邻近建筑荷载对地下管线的影响分析[J]. 同济大学学报(自然科学版), 2004, 32(12): 1553-1557. (LI Jing-pei, DING Shi-jun. Influence of additional load caused by adjacent buildings on underground pipeline[J]. Journal of Tongji University(Natural Science), 2004, 32(12): 1553-1557. (in Chinese))
[2]	龚晓南, 孙中菊, 俞建霖. 地面超载引起邻近埋地管道的位移分析[J]. 岩土力学, 2015, 36(2): 305-310. (GONG Xiao-nan, SUN Zhong-ju, YU Jian-lin. Analysis of displacement of adjacent buried pipeline caused by ground surcharge[J]. Rock and Soil Mechanics, 2015, 36(2): 305-310. (in Chinese))
[3]	FERNANDO N S M, CARTER J P. Elastic analysis of buried pipes under surface patch loadings[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(8): 720-728.
[4]	TRICKEY S A, MOORE I D. Three-dimensional response of buried pipes under circular surface loading[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133(2): 219-223.
[5]	COREY R, HAN J, KHATRI D K, et al. Laboratory study on geosynthetic protection of buried steel-reinforced HDPE pipes from static loading[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2014, 140(6): 1-10.
[6]	KHATRI D K, HAN J, PARSONS R L, et al. Laboratory evaluation of deformations of steel-reinforced high-density polyethylene pipes under static Loads[J]. Journal of Materials in Civil Engineering, 2013, 25(12): 1964 - 1969.
[7]	周敏, 杜延军, 王非. 地层沉陷中埋地 HDPE 管道力学状态及模型试验分析[J]. 岩土工程学报, 2016, 38(2): 253-262. (ZHOU Min, DU Yan-jun, WANG Fei, et al. Physical modeling of mechanical responses of HDPE pipes and subsurface settlement caused by land subsidence[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(2): 253-262. (in Chinese))
[8]	张治国, 黄茂松, 张孟喜, 等. 层状地基中盾构隧道开挖非均匀收敛引起临近管道变形预测[J]. 岩石力学与工程学报, 2010, 29(9): 1867-1876. (ZHANG Zhi-guo, HUANG Mao-song, ZHANG Meng-xi, et al. Deformation prediction of adjacent pipeline due to non-uniform convergence of shield tunneling in layered soils[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(9): 1867-1876. (in Chinese))
[9]	ZHANG C R, YU J, HUANG M S. Effects of tunneling on existing pipelines in layered soils[J]. Computers and Geotechnics, 2012, 43(2): 12-25.
[10]	艾智勇, 张逸帆. 层状横观各向同性地基与刚性条形基础共同作用分析[J]. 岩土工程学报, 2014, 36(4): 752-756. (AI Zhi-yong, ZHANG Yi-fan. Interactive analysis of a rigid strip footing on transversely isotropic layered soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(4): 752-756. (in Chinese))
[11]	李波, 黄茂松. 层状地基中单桩一桩帽一土共同作用等效剪切位移法[J]. 土木建筑与环境工程, 2013, 35(1): 32-39. (LI Bo, HUANG Mao-song. An Equivalent shear displacement method of single capped pile in layered soil[J]. Journal of Civil Architectural and Environmental Engineering, 2013, 35(1): 32-39. (in Chinese))
[12]	AI Z Y, LI Z X, CHENG Y C. BEM analysis of elastic foundation beams on multilayered isotropic soils[J]. Soils and Foundations, 2014, 54(4): 667-674.
[13]	钟阳. 多层弹性半空间问题解的精确刚度矩阵法[J]. 应用力学学报, 2008, 25(2): 316-319. (ZHONG Yang. Explicit solution of multilayer elastic half-space by exact stiffness matrix method[J]. Chinese Journal of Applied Mechanics, 2008, 25(2): 316-319. (in Chinese))
[14]	阳恩慧, 艾长发, 邱延峻. 采用刚度矩阵法的弹性层状体系数值解法[J]. 交通运输工程学报, 2014, 14(4): 14-24. (YANG En-hui, AI Chang-fa, QIU Yan-jun. Numerical method of multi-layer elastic system by using stiffness matrix method[J]. Journal of Traffic and Transportation Engineering, 2014, 14(4): 14-24. (in Chinese))
[15]	艾智勇, 杨轲舒. 横观各向同性层状地基上弹性矩形板的参数研究[J]. 岩土工程学报, 2016, 38(8): 1442-1446. (AI Zhi-yong, YANG Ke-shu. Parametric study on an elastic rectangle plate on transversely isotropic multi-layered soils [J]. Chinese Journal of Geotechnical Engineering, 2016, 38(8): 1442-1446. (in Chinese))
[16]	徐芝纶. 弹性力学[M]. 5版. 北京: 高等教育出版社, 2016: 212-226. (XU Zhi-lun. Elasticity[M]. 5th ed. Beijing: Higher Education Press, 2016: 212-226. (in Chinese))
[17]	李广信, 张丙印, 于玉贞. 土力学[M]. 2版. 北京: 清华大学出版社, 2013: 98-119. (LI Guang-xin, ZHANG Bing-yin, YU Yu-zhen. Soil mechanics[M]. 2nd ed. Beijing: Tsinghua University Press, 2013: 98-119. (in Chinese))
[18]	VESIC A B. Bending of beams resting on isotropic elastic solid[J]. Journal of the Engineering Mechanics Division, ASCE, 1961, 87(2): 35-53.

施引文献(13)

期刊类型引用(7)

1.	陈凌宇. 考虑子盆地影响的二维盆地非线性地震反应研究. 江苏建筑. 2024(05): 23-25+50 . 百度学术
2.	周青帅，刘启方. 不均匀软弱夹层对沉积盆地地震动放大的影响研究. 地震工程与工程振动. 2023(06): 183-193 . 百度学术
3.	魏成前. 入射波的卓越频率对盆地地震动响应的影响. 四川建材. 2022(01): 249-250 . 百度学术
4.	邵祖鹏，刘启方. 震源深度对二维盆地放大的影响研究. 地震研究. 2022(03): 489-497 . 百度学术
5.	刘启方. 2014年鲁甸地震龙头山镇盆地共振效应研究. 地震工程与工程振动. 2021(02): 43-52 . 百度学术
6.	于彦彦，丁海平. 盆地深度对盆地地表地震动及次生面波的影响. 地震工程与工程振动. 2021(03): 147-156 . 百度学术
7.	强生银，刘启方，温瑞智，王宏伟. 基于二维数值模拟的盆地地震动放大系数. 地震工程与工程振动. 2021(04): 131-144 . 百度学术