地埋管线周围土体抗力系数的正交各向异性解析分析

doi:10.13722/j.cnki.jrme.2018.0985

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (716 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract For the design and assessment of municipal and submarine pipelines，it is vital to solve the problems of the anisotropy and determination of the soil resistance coefficients around buried pipelines. Vertical and horizontal resistance coefficients were obtained by using transfer matrix method and analogy method，considering partial or complete embedment of the pipeline and change of the pipe-soil stiffness ratio，and axial resistance coefficient was solved by using shear displacement method and image method respectively corresponding to partially buried and completely buried cases. The rationality of the method for calculating the resistance coefficients was verified via numerical examples，and the differences in the values of the resistance coefficients caused by the change of parameters were analyzed for three typical foundation distribution forms. The results show that the resistance coefficients in three directions increase with increasing the buried depth-diameter ratio and tend to be stable with the buried depth-diameter ratio reaching 20，and that the vertical and horizontal resistance coefficients decrease with rising the pipe-soil stiffness ratio. In homogeneous semi-infinite soil，the axial resistance coefficient is less than the vertical resistance coefficient. The ratio of the horizontal resistance coefficient to the vertical resistance coefficient is less than 1 for the partially buried pipeline，but，for the completely buried pipeline，more than 1 and approaches 1 with a buried depth-diameter ratio of 20. The finite compression characteristic of soil under the pipeline has obvious influence on the vertical and horizontal resistance coefficients，and the influence on the former is more significance. The vertical and horizontal resistance coefficients obtained by simplified homogenization method are obviously different from the stratified solutions proposed in this paper. Corresponding to the cases of an upper-soft and lower-hard stratum and an upper-hard and lower-soft stratum，the simplified homogeneous values of the resistance coefficients are respectively bigger or smaller than the stratified solutions.

Key words： soil mechanics buried pipeline isotropic soil elastic resistance coefficients analytic solutions orthogonal anisotropy

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Yu1
	CHEN Wenhua1
	WANG Kaixuan2

Cite this article:

WANG Yu1,CHEN Wenhua1,WANG Kaixuan2. An analytical method for evaluating orthogonal anisotropy of soil resistance coefficients around buried pipelines[J]. , 2019, 38(3): 606-618.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0985 OR http://www.rockmech.org/EN/Y2019/V38/I3/606

[8]	TERZAGHI K. Evaluation of coefficients of subgrade reaction[J]. Geotechnique，1955，5(4)：297-326.
[6]	BIOT M A. Bending of an infinite beam on an elastic foundation[J]. Journal of Applied Mechanics，ASME，1937，59：A1-A7.
[5]	WHIDDEN W R. Buried flexible steel pipe：design and structural analysis[M]. Virginia，USA：ASCE，2009：73-86.
[2]	GAZETAS G，TASSOULAS J L. Horizontal stiffness of arbitrarily shaped embedded foundations[J]. Journal of Geotechnical Engineering，1987，113(5)：440-457.
[4]	SHARMA J R. Development of a model for estimation of buried large diameter thin-walled steel pipe deflection due to external loads[Ph. D. Thesis][D]. Arlington：University of Texas at Arlington，2013.
[7]	VESIC A B. Bending of beams resting on isotropic elastic solid[J]. Journal of the Engineering Mechanics Division，ASCE，1961，87(2)：35-53.
[10]	俞剑，张陈蓉，黄茂松. 被动状态下地埋管线的地基模量[J]. 岩石力学与工程学报，2012，31(1)：123-132.(YU Jian，ZHANG Chenrong，HUANG Maosong. Subgrade modulus of underground pipelines subjected to soil movements[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(1)：123-132.(in Chinese))
[9]	DALOGLU A T，VALLABHAN C V G. Values of k for slab on Winkler foundation[J]. Journal of Geotechnical and Geoenvironmental Engineering，2000，126(5)：463-471.
[19]	钟阳，殷建华. 弹性层状体的求解方法[M]. 北京：科学出版社，2007：142-150.(ZHONG Yang，YIN Jianhua. Solving method of elastic layered body[M]. Beijing：Science Press，2007：142-150.(in Chinese))
[25]	方钱宝，马建林，喻渝，等. 大断面黄土隧道围岩弹性抗力系数、变形模量与压缩模量试验研究[J]. 岩石力学与工程学报，2009，28(增2)：3 932-3 937.(FANG Qianbao，MA Jianlin，YU Yu，et al. Experimental research on elastic resistant coefficient，deformation and compressive moduli of surrounding rock in large-section loess tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 932-3 937.(in Chinese))
[26]	HALDAR S，BASU D. Analysis of beams on heterogeneous and nonlinear soil[J]. International Journal of Geomechanics，2016，16(4)：04016004.
[1]	GAZETAS G，DOBRY R，TASSOULAS J L. Vertical response of arbitrarily shaped embedded foundations[J]. Journal of Geotechnical Engineering，1985，111(6)：750-771.
[3]	GUHA I，RANDOLPH M F，WHITE D J. Evaluation of elastic stiffness parameters for pipeline-soil interaction[J]. Journal of Geotechnical and Geoenvironmental Engineering，2016，142(6)：04016009.
[11]	YU J，ZHANG C R，HUANG M S. Soil-pipe interaction due to tunnelling：Assessment of Winkler modulus for underground pipelines[J]. Computers and Geotechnics，2013，50(5)：17-28.
[13]	王雨，陈文化. 地埋梁与横观各向同性层状地基相互作用的广义VESIC解答[J]. 岩土工程学报，2018，40(12)：2 241-2 248.(WANG Yu，CHEN Wenhua. Generalized VESIC solution for interaction of buried beam and transversely isotropic layered soil[J]. Chinese Journal of Geotechnical Engineering，2018，40(12)：2 241-2 248.(in Chinese))
[15]	TIAN Y H，CASSIDY M J，GAUDIN C. Advancing pipe-soil interaction models in calcareous sand[J]. Applied Ocean Research，2010，32(3)：284-297.
[16]	HOLDER M S，CASSIDY M J. A plasticity model for predicting the vertical and lateral behaviour of pipelines in clay soils[J]. Geotechnique，2010，60(4)：247-263.
[21]	邵羽. 盾构双隧道施工对临近地埋管线的影响研究[博士学位论文][D]. 南宁：广西大学，2017.(SHAO Yu. Mechanism behaviors of existing buried pipelines due to twin shield tunnelling[Ph. D. Thesis][D]. Nanning：Guangxi University，2017.(in Chinese))
[23]	MYLONAKIS G，GAZETAS G. Settlement and additional internal forces of grouped piles in layered soil[J]. Geotechnique，1998，48(1)：55-72.
[12]	王雨，陈文化. 地层成层性对基床系数的影响分析[J]. 岩石力学与工程学报，2017，36(增2)：4 304-4 312.(WANG Yu，CHEN Wenhua. Influence of soil stratification on coefficient of subgrade reaction[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(Supp.2)：4 304-4 312.(in Chinese))
[14]	SHELDON T，SEZEN H，MOORE I D. Beam-on-springs modeling of jointed pipe culverts[J]. Journal of Performance of Constructed Facilities，2016，30(2)：1-9.
[17]	HMADI K E，O?ROURKE M. Soil springs for buried pipeline axial motion[J]. Journal of Geotechnical Engineering，1988，114(11)： 1 335-1 339.
[18]	MATSUBARA K，HOSHIYA M. Soil spring constants of buried pipelines for seismic design[J]. Journal of Engineering Mechanics，2000，126(1)：76-83.
[20]	吴为义. 盾构隧道周围地下管线的性状研究[博士学位论文][D]. 杭州：浙江大学，2008.(WU Weiyi. Study on mechanical behaviors of buried pipelines induced by shield tunnelling construction[Ph. D. Thesis][D]. Hangzhou：Zhejiang University，2008.(in Chinese))
[22]	WHITE D J，RANDOLPH M F. Seabed characterisation and models for pipeline-soil interaction[J]. International Journal of Offshore and Polar Engineering，2007，17(3)：193-204.
[24]	RANDOLPH M F，WROTH C P. Analysis of deformation of vertically loaded piles[J]. Journal of the Geotechnical Engineering Division，1978，104(12)：1 465-1 488.