2004 Vol. 18, No. 1

  Previous Issue | Next Issue 
Display Method:
Re-recognition of the Soil's Anisotrophy
Zhang Kunyong, Yin Zongze, Xu Zhiwei
2004, 18(1): 1-4.
[Abstract](22) [PDF 186KB](7)
Abstract:
There is essential difference between the soil's inherent anisotropy and induced anisotrophy.The explaination based on elastic and elastic-plastic theory to anisotry is analysed. It can be drawn from the result of true-triaxial test that induced anisotrophy has much influence on soil's behaviour,so enough consideration should be taken when making numerical analysis on soil.
Study of Geostatistics on Quality of Rock and Soil
Xing Jun, Sun Hongquan, Li Weitao
2004, 18(1): 5-7.
[Abstract](60) [PDF 286KB](4)
Abstract:
Based on the geostatistical theory and method, static water line is analyzed by the tool of variogram. Using the data measured in practical engineering, experimental variogram and theoretic variogram in different directions are obtained, and a synthetic variation index is put forward. The method of quantificational analysis on the data of rock and soil is presented.
Development of the Liquefaction Zone of Saturated Sand Foundation under Horizontal Vibration
Zhang Jinlai, Lu Xiaobing, Wang Shuyun
2004, 18(1): 8-10.
[Abstract](29) [PDF 152KB](4)
Abstract:
Through analyzing the liquefaction zone development of the saturated sand caused by horizontal vibration distributing along depth,it is shown that the liquefaction occurs near the loading end and then develops faraway.The liquefaction development of the saturated sand increases with the increase of loading amplitude and loading frequency and the decrease of the modulus.In the frequency range considered,the deformation on the surface and the pore pressure increase with the increase of the frequency.
Application of M-phase Fuzzy Probability Classification in the Classification of Core's Stuff of Shuibuya Rock-fill Dam
Wang Yajun
2004, 18(1): 11-15.
[Abstract](62) [PDF 227KB](4)
Abstract:
With the introduction of M-phase fuzzy domain, here,based on the multivariate regression analysis,establishing the LOGISTIC affiliating degree math model which has been applied in a concrete problem in the following content.
Stochastic Theory for Predicting Latitudinal Stratum Settlement due to the Tunnel Construction
Ji Yonghong
2004, 18(1): 16-18,34.
[Abstract](59) [PDF 197KB](4)
Abstract:
It is difficult to determine the angle of incidence β and the constringency of tunnel ΔR,when the latitudinal stratum settlement due to the tunnel constrution is calculated with the theoretical formula on the latitudinal stratum settlement,based on the mechanics of stochastic medium.It is analyzed how to determine the two parameters.And the theoretical formula on the latitudinal stratum settlement is checked by practice.
Analysis of the Different Load Models in the Lining Segments of Shield Tunnel
Hu Zhiping, Luo Lijuan, Cai Zhiyong
2004, 18(1): 19-22,42.
[Abstract](36) [PDF 223KB](4)
Abstract:
This paper proposes a beam*.spring*.foundation system model to analyze the respond and deformation of the shield tunnel under different load models.Some load models composed of distribution of soil pressure and water pressure are discussed.Furthermore,based on the example of the shield tunnel through the Yangzi River,the distribution of inner force and deformation difference under different load models are discussed in details,and some valuable results are presented.
Equivalent Stress Calculation Considering Rheology of Geogrids for Reinforced Walls
Xiao Chengzhi, Luan Maotian, Yang Qing
2004, 18(1): 23-27.
[Abstract](37) [PDF 235KB](4)
Abstract:
The geogrid-reinforced soil mass is regarded as a marco-homogeneity and anisotropy materials composed of the elasto-plastic soil and visco-elastic geogrids. The soil in the composite mass is of elasto-plastic behavior and its strength obeys the Mohr-Coulomb's criterion of failure while the creep behavior of geogrids is represented by rheological model with a series of a Kevin model and an elastic spring. The equivalent stress calculation of geogrids is established on the basis of fundamental of mechanics of composite material. The results considering rheology are compared with results gained by method with non-rheology.
the Horizontal Foundation Coefficient in Rheologic Soil Region
Kong Dezhi, Zhang Hui, Zhang Qinghe
2004, 18(1): 28-30,39.
[Abstract](25) [PDF 180KB](6)
Abstract:
The model of rheologic soil and the internal force and deformation of excavation are analyzed. The expression of the horizontal foundation coefficient and time in rheologic soil region is provided. According measure result of practical project, the variability of the horizontal foundation coefficient is analyzed. The variational law of the horizontal foundation coefficient is proposed.
Comparison on Pile Driving Effect between Driven Cast-in-place Tubular Pile and General Synchronous Pile
Wang Pengcheng, Zhu Xiangrong
2004, 18(1): 31-34.
[Abstract](50) [PDF 190KB](6)
Abstract:
The pile driving effects of driven cast*.in*.place tubular piles are analytically analyzed by making use of cylindrical cavity expansion theory,and by comparison with general piles,its superiorities in respect of disturbing soils are displayed. Because both its inner and external surface can bear friction,and it is hollow,so its bearing capacity is higher and pile driving effect is smaller than any kind else,and is worth being popularized.
Experimental Study on Bearing Mechanism of Bored Pile in Soft Clay
Gao Qiang, Yang Longcai, Wang Binglong
2004, 18(1): 35-39.
[Abstract](31) [PDF 238KB](7)
Abstract:
Reinforcement gauges are installed in main steel bars of the bored pile in soft clay. By means of static loading test, the character of loading-settlement is investigated. At the same time, the developing process of axial force, lateral friction and tip resistance are obtained, and settlement of the pile is analyzed and calculated based on the experimental data. So some beneficial conclusions are obtained.
Study on Effect of Mica Content to the Engineering Characteristics of Weathered Granite Subgrade Soil
Zhang Jun, Wang Jingmei, Liu Longwu
2004, 18(1): 40-42.
[Abstract](62) [PDF 146KB](6)
Abstract:
The effect of mica content on the engineering characteristics of granite subgrade soil is studied,by separating mica from granite residual soil and forming the specimen according to different mica content, and conducting CBR test and resilience modulus test. The change mechanism of the granite subgrade soil is inquired.
the Study of Yard-and-station Roadbed's Temperature Field of Qinghai-Tibet Railway in Permafrost Region
Min Dongli, Wei Qingchao, Wang Lianjun
2004, 18(1): 43-46.
[Abstract](52) [PDF 367KB](5)
Abstract:
The width of yard-and-station roadbed is twice over common single-track embankment. Based on the experimental data of Qinghai-Tibet railway's experimentation project, the character of yard-and-station roadbed's temperature field and artificial permafrost table are analyzed, the rule of the process of embankment's freezing and thaw is also discussed. The stability of embankment in permafrost region is also presented.
Application of Micropiling Compound Structure in a Landslide Treatment Engineering
Ding Guangwen, Wang Xin
2004, 18(1): 47-50.
[Abstract](28) [PDF 181KB](12)
Abstract:
The forming mechanism of a landslide and the design,construction and site test of micropiling compound structure in the landslide treatment engineering are introduced。
Modern Shotcrete Condition and Development
Wang Hongxi, Chen Youzhi, Ding Qingjun
2004, 18(1): 51-54.
[Abstract](43) [PDF 188KB](5)
Abstract:
An overall introduction in recent shotcrete research are given. By discussing and andalyzing the technological process and mechanical equipment and material controlling and construction management,the existing problem of shotcrete in civil engineering and hydroelectric works and its development prospects are presented

Copyright © Geotechnical Engineering Technique京ICP备12043220号-2

Address：No.79 Xibianmen Inner Street (Xibianmennei Dajie), Xicheng District, 100053, Beijing, P. R. China（100053）Tel：010-83117072 / 010-83196888Fax：（010）83117582Email：get099@263.net

Supported by: Beijing Renhe Information Technology Co. Ltd