Please wait a minute...
 J4  2012, Vol. 46 Issue (1): 1-7    DOI: 10.3785/j.issn.1008-973X.2012.01.01
 土木工程

1.浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州 310058;
2.宁波大学 建筑工程与环境学院, 浙江 宁波 315211
Modified Duncan-Chang model considering disturbance
XU Ri-qing1, ZHANG Jun1, ZHU Jian-feng1,2, WANG Xing-chen1
1. Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University,
Hangzhou 310058,China; 2. Faculty of Architectural Civil Engineering and Environment, Ningbo University,
Ningbo 315211, China
 全文: PDF  HTML

Abstract:

The triaxial test data of ISO standard sand of China under different conditions show that the relative density strongly affect the strength-deformation property of sand. The general disturbance function  was proposed based on the disturbed state concept (DSC). The function considered the relative density of sand as the disturbed parameter. Then the modified Duncan-Chang model, which could reflect the contribution of disturbance to the strength-deformation property of sand, was developed through establishing the relationship between parameters K and peak strength and disturbed degree. The material parameters d、g and the parameters of Duncan-Chang model at initial state were given. Then the stress-strain relation of sand at randomly disturbed state can be predicted by the modified model. The test results show that the modified Duncan-Chang model can well describe the stress-strain relation of sand at a given disturbed state.

 : TU 411

 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章

#### 引用本文:

XU Ri-qing, ZHANG Jun, ZHU Jian-feng, WANG Xing-chen. Modified Duncan-Chang model considering disturbance. J4, 2012, 46(1): 1-7.

#### 链接本文:

 ［1］ 易宏伟. 盾构法施工对土体扰动和地层移动影响的研究［D］. 上海： 同济大学, 1999． YI Hongwei. Research on the disturbance of soil and ground movements induced by shield tunneling ［D］. Shanghai: Tongji University, 1999． ［2］ DESAI C S. A consistent finite element technique for work softening behavior ［C］∥ Proceeding of International Conference on Computer Methods in Nonlinear Mechanics. Austin: University of Texas, 1974． ［3］ PARK I J, DESAI C S. Cyclic behaviour and liquefaction of sand using disturbed state concept ［J］. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(9):834-846． ［4］ PADHAN S K, DESAI C S. DSC model for soil interface including liquefaction and prediction of centrifuge test ［J］. Journal of Geotechnical and Geoenvironmental Engineering, 2006,132 (2): 214-222. ［5］ 张孟喜.受施工扰动土体的工程性质研究［D］.上海：同济大学,1999. ZHANG Mengxi. Study on engineering properties of soil masses disturbed due to construction ［D］. Shanghai: Tongji University, 1999． ［6］ 徐永福.土体受施工扰动影响程度的定量化识别［J］. 大坝观测与土工测试, 2000, 24(2): 8-10. XU Yongfu. Quantitative determination of disturbance degree of soils influenced by construction ［J］. Dam Observation and Geotechnical Tests, 2000, 24(2): 8-10. ［7］ 王景春,徐日庆,黄斌. 施工扰动作用下基坑抗隆起稳定性分析［J］. 岩石力学与工程学报, 2005, 24(增2):5405-5409. WANG Jingchun, XU Riqing, HUANG Bin. Study on stability against heave of deep excavation considering construction disturbance ［J］. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(Supp.2):5405-5409． ［8］ DUNCAN J M, CHANG C Y. Nonlinear analysis of stress and strain in soils ［J］. Journal of the Soil Mechanics and Foundations Division, 1970, 96(SM5): 1629-1653. ［9］ 胡亚元,陈云敏. 本构模型与软黏土强度增长的关系研究［J］.浙江大学学报：工学版, 2004,38（6）:731-735． HU Yayuan, CHEN Yunmin. Research on correlation between soil model and shear strength gain in staged con struction ［J］. Journal of Zhejiang University: Engineering Science, 2004,38（6）: 731-735． ［10］ 陈育民, 刘汉龙.邓肯张本构模型在FLAC3D 中的开发与实现［J］.岩土力学, 2007,28(10):2123-2126． CHEN Yumin, LIU Hanlong. Development and implementation of DuncanChang constitutive model in FLAC3D ［J］. Rock and Soil Mechanics, 2007, 28(10):2123-2126． ［11］ 彭长学,杨光华. 软土ep 曲线确定的简化方法及在非线性沉降计算中的应用 ［J］.岩土力学, 2008,29(6):1706-1710． PENG Changxue, YANG Guanghua. A simplified method for determining ep curve of soft soil and its application to analyzing nonlinear settlement of foundation ［J］. Rock and Soil Mechanics, 2008, 29(6): 1706-1710． ［12］ 中华人民共和国水利部. SL237-1999，土工试验规程［S］. 北京: 中国水利水电出版社, 1999. ［13］ KONDNER R L, ZELASKO J S. A hyperbolic stressstrain formulation for sands ［C］∥ Proceedings of the 2nd PanAmerican Conference on Soil Mechanics and Foundations Engineering. Brazil: Northwestern University, 1963: 289-324． ［14］ JANBU N. Soil compressibility as determined by oedometer and triaxial tests ［C］∥ European Conference on Soil Mechanics and Foundations Engineering. Wiesbaden: ISSMGE, 1963: 19-25. ［15］ KONDNER R L, ZELASKO J S. Void ratio effect on the hyperbolic stressstrain response of a sand ［C］∥ Laboratory Shear Testing of Soils.  Ottawa: Northwestern University, 1963:250-257．
 [1] 刘长殿, 孙红月, 康剑伟, 杜丽丽. 土体的充气阻渗试验[J]. J4, 2014, 48(2): 236-241. [2] 柯瀚,王文芳,魏长春,陈云敏,詹良通. 填埋体饱和渗透系数影响因素室内研究[J]. J4, 2013, 47(7): 1164-1170. [3] 王林涛,龚国芳,施虎,刘怀印. 基于盾构密封舱压力直接反馈地表变形控制[J]. J4, 2012, 46(7): 1182-1188. [4] 刘永莉,孙红月,于洋,詹伟,尚岳全. 基于BOTDR监测技术抗滑桩上滑坡推力确定[J]. J4, 2012, 46(5): 798-803. [5] 刘永莉, 孙红月, 于洋, 詹伟， 尚岳全. 抗滑桩内力的BOTDR监测分析[J]. J4, 2012, 46(2): 243-249. [6] 周建, 郑鸿镔, 温晓贵, 管林波, 邓以亮. 考虑中主应力系数影响的主应力轴旋转下 原状软黏土变形研究[J]. J4, 2011, 45(12): 2134-2141. [7] 陈国红, 谢康和, 程永峰, 徐妍. 考虑涂抹区渗透系数变化的砂井地基固结解[J]. J4, 2011, 45(4): 665-670. [8] 施虎,龚国芳,杨华勇,汪慧. 盾构掘进机推进力计算模型[J]. J4, 2011, 45(1): 126-131.