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J4  2013, Vol. 47 Issue (7): 1157-1163    DOI: 10.3785/j.issn.1008-973X.2013.07.004
    
Long-term settlement of surcharge preloading foundation in soft clay area induced by aircraft loads
CAI Yuan-qiang,LIU Xin-feng,GUO Lin,SUN Hong-lei,CAO Zhi-gang
MOE Key Laboratory of Soft Soils and Geoenviromental Engineering,Zhejiang University,Hangzhou 310058,China    
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Abstract  

Cumulative plastic strain model and excess pore pressure model were proposed by cyclic triaxial tests conducted on Wenzhou soft clay in order to analyze the long-term settlement of surcharge preloading foundation under aircraft loads. Combining with the dynamic deviator stress calculated by multilayer elastic theory and the established experience model, the cumulative plastic strain and the strain induced by pore pressure dissipation of the soft ground under traffic loading were obtained. The long-term sediment of the preloaded lane of Wenzhou airport under the airplane loading was calculated by summation of sub-layers and verified with the in-situ test results. Then the reasonability of the undrained cumulative plastic strain model and the cumulative pore pressure model of over-consolidated soil was validated.



Published: 01 July 2013
CLC:  TU 443  
Cite this article:

CAI Yuan-qiang,LIU Xin-feng,GUO Lin,SUN Hong-lei,CAO Zhi-gang. Long-term settlement of surcharge preloading foundation in soft clay area induced by aircraft loads. J4, 2013, 47(7): 1157-1163.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.07.004     OR     http://www.zjujournals.com/eng/Y2013/V47/I7/1157


飞机荷载作用下超载预压软土地基的长期沉降

为了研究超载预压地基在飞机荷载作用下的长期沉降,通过对温州淤泥质黏土进行室内循环三轴试验,建立饱和软黏土的累积塑性应变模型和累积孔压模型.利用层状弹性理论计算地基中的动偏应力,结合已建立的经验模型得到在交通荷载作用下软土地基的累积塑性应变和孔压消散应变.采用分层总和法计算飞机荷载作用下温州机场跑道超载预压地基的长期累积沉降,将计算沉降值与实测沉降值进行对比,验证了饱和超固结土不排水累积塑性应变模型和累积孔压模型的合理性.

[1] CHAI J C, MIURA N. Traffic-load-induced permanent deformation of road on soft subsoil [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(11): 907-916.
[2] 凌建明,王伟,邬洪波.行车荷载作用下湿软路基残余变形的研究[J].同济大学学报,2002,30(11): 1315-1320.
LING Jian-ming,WANG Wei,WU Hong-bo. One residual deformation of saturated clay subgrade under vehicle load [J]. Journal of Tongji University,2002,30(11): 1315-1320.
[3] 杨斐,杨宇亮,孙立军.飞机起降荷载作用下的场道地基沉降[J].同济大学学报,2008,36(6):744-748.
YANG Fei, YANG Yu-liang, SUN Li-jun. Settlement of runway subgrade under moving aircraft loads [J]. Journal of Tongji University,2008, 36(6):744-748.
[4] 周建,屠洪权,安原一哉. 动力荷载作用下软黏土的残余变形计算模式[J].岩土力学,1996,17(1): 54-60.
ZHOU Jian,TU Hong-quan,YASWHARA K. A model for predicting the cyclic behavior of soft clay [J]. Rock and Soil Mechanics, 1996, 17(1): 54-60.
[5] 王军,蔡袁强.循环荷载作用下饱和软黏土的应变累积模型的研究[J].岩石力学与工程学报,2008, 27(2):331-338.
WANG Jun,CAI Yuan-qiang. Study on accumula- tive plastic strain model of clay under cyclic loading [J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(2):331-338.
[6]  MROZ Z,NORRIS V A,ZIENKIEWICZ O C. Anisotripic hardening model for soils and its application to cyclic loading [J]. International Journal for Numerical and Analytical Methods in Geomechanics,1978, 2(3):203-221.
[7] IWAN W D. On a class of models for the yielding behavior of continuous and composite system [J]. Journal of Applied Mechanics,ASCE, 1967, 34(E3): 612-617.
[8] PREVOST J H. Plasticity theory for soils stress-strain behavior [J]. Journal of the Engineering Mechanics Division, 1978, 104(5): 1177-1196.
[9] DAFALIAS Y F. Cyclic loading response of conhesive soils using a bounding surface plasticity model [C]∥International Conference on Recent Advances in Geotechnical Earthquake and Soil Dynamics.St. Louis:University of Missouri-Rolla,1981: 139-144.
[10] 魏星,黄茂松.交通荷载作用下公路软土地基长期沉降的计算[J].岩土力学, 2009,30(11):33423346.
WEI Xing,HUANG Mao-song. A simple method to predict traffic-load-induced permanent settlement of road on soft subsoil [J]. Rock and Soil Mechanics,2009, 30(11):3342-3346.
[11] 刘明,黄茂松,柳艳华.车振荷载引起的软土越江隧道长期沉降分析[J].岩土工程学报,2009,31(11):1703-1709.
LIU Ming,HUANG Mao-song,LIU Yan-hua. Long-term settlement of tunnels across a river induced by vehicle operation [J]. Chinese Journal of Geotechnical Engineering,2009, 31(11):1703-1709.
[12] 边学成,曾二贤,陈云敏.列车交通荷载作用下软土路基的长期沉降[J].岩土力学,2008,29(11): 2991-2995.
BIAN Xue-cheng, ZENG Er-xian, CHEN Yun-min. Long-term settlements of soft soil ground induced by train traffic loadings [J]. Rock and Soil Mechanics, 2008, 29(11):2991-2995.
[13] MONISMITH C L, OGAWA N, FREEME C R. Permanent deformation characteristics of subgrade soils due to repeated loading [J]. Transportation Research Record, 1975,12(16): 1-17.
[14] LI D, SELIG E T. Cumulative plastic deformation for fine-grained subgrade soils [J]. Journal Soils of Geotechnical Engineering,1996,122(12):1006-1013.
[15] LI D, SELIG E T. Method for railroad track foundation design. II: application [J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(4): 323-329.
[16] 黄茂松,李进军,李兴照.饱和软黏土的不排水累积塑性特性[J].岩土工程学报, 2006,28(7): 891-895.
HUANG Mao-song, LI Jin-jun, LI Xing-zhao. Cumulative deformation behaviour of soft clay in cyclic undrained tests [J]. Chinese Journal of Geotechnical Engineering, 2006, 28(7):891-895.
[17] 王军,蔡袁强,李校兵.循环荷载作用下超固结软黏土软化孔压模型的研究[J].岩土力学,2008, 29(12):3217-3222.
WANG Jun, CAI Yuan-qiang, LI Xiao-bing. Cyclic softening-pore pressure generation model for overconsolidated clay under cyclic loading [J]. Rock and Soil Mechanics,2008,29(12): 3217-3222.
[18] SAKAI A, SAMANG L, MIURA N. Partially-drained cyclic behavior and its application to the settlement of a low embankment road on silty-clay [J]. Soils and Foundations, 2003, 43(1): 33-46.
[19] IDRISS I M, DOBRY R, SINGH R D. Nonlinear behavior of soft clays during cyclic loading [J]. Journal of Soil Mechanics and Foundation, 1978, 104(12): 1427-1447.
[20] YASUHARA Y, HYDE A F L, TOYTA N. Cyclic stiffness of plastic silt with an initial drained shear stress [C]∥Proceedings of the Geotechnique Symptom in Print on Prefailure Deformation Behavior of Geomaterials. London: [s.n.], 1998: 371-382.
[21] 王军,蔡袁强,徐长杰,等.循环荷载作用下饱和软黏土应变软化模型研究[J].岩石力学与工程学报,2007,26(8):1713-1719.
WANG Jun,CAI Yuan-qiang,XU Chang-jie,et al. Study on strain of softening model of saturated soft clay under cyclic loading [J]. Journal of Rock Mechanics and Engineering,2007, 26(8): 1713-1719.
[22] MAYNE P. Determining OCR in clays from laboratory strength [J]. Journal of Geotechnical Engineering, 1988, 114(1): 22-31.
[23] 吴世明.大型地基基础工程技术[M].杭州:浙江大学出版社,1997.
[24] 郝云龙,陈云敏,王军.深厚软土未打穿砂井超载预压地基孔隙水压力消散规律分析[J].中国公路学报,2002,15(2):36-39.
HAO Yun-long, CHEN Yun-min, WANG Jun. Consolidation analysis for partially penetrating sand drain ground preloaded by surcharge [J]. China Journal of Highway and Transport, 2002, 15(2): 36-39.

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