2004 Vol. 18, No. 3

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A Method of Slope Stability Evaluation Using Grey-relational Theory
Li Mei, Xia Yuanyou
2004, 18(3): 109-112,125.
[Abstract](29) [PDF 373KB](6)
Abstract:
Introducing a method of slope stability evaluation based on case-based reasoning, and a case retrieving method using grey-relational theory. Through appling this case retrieving method into practical slope engineering cases, the results show that the method is simple and practical. By comparison with retrieving results of Euclidean distance in the same condition, it proves that this method has obvious advantage.
Experimental Study on Stress Ratio between Pile and Soil of DJM Pile Composite Foundation
Zhu Zhongwei, Fang Lei
2004, 18(3): 113-115.
[Abstract](46) [PDF 292KB](8)
Abstract:
Introducing the study of the stress ratio between pile and soil in a superhighway along the Yangtze River, which has been improved by Dry Jet Mixing pile. The tests for stress ratio between pile and soil of Dry Jet Mixing pile composite foundation, during the bearing experiments and the constructing embankment, are both analyzed. Based on comparing the results of the tests, it is shown that two results are accordant. The final result shows it is feasible for making the stress ratio between pile and soil under the bearing test as the design parameter of the DJM pile composite foundation.
Multifactor Forecast Model of Tunnel System
Hao Zhe, Luo Ao, Liu Bin
2004, 18(3): 116-121.
[Abstract](34) [PDF 453KB](5)
Abstract:
The multifactor forecast model of tunnel system is built and the related program is edited.It compensates the shortage of ancient single factor time series analysis.Hereby,aiming at various measuring data of Hanjialing highway tunnel engineering,the multifactor forecast model of tunnel system and its stability are studied and the forecasted results are discussed.
Prediction of Nerve Network on Surrounding Rock Deformation in Tongyu Highway Tunnel
Xu Linsheng
2004, 18(3): 122-125.
[Abstract](34) [PDF 335KB](5)
Abstract:
The surrounding rock deformation of highway tunnel is an important index to assess its stability and economy of support structure in NATM.It is a data column which is related with measurement time sequence,so we can set up some effective models and methods to predict the surrounding rock deformation. According to the surrounding rock deformation characteristics of Tongyu highway tunnel, the nerve network technology is adopted to predict the subsidence displacements.The research results show this prediction method is simple and effective.
Study of Foundation Soil's Bearing Capacity Calculation Based on DMT in Shanghai Region
Fan Xiangyang, Mo Qunhuan, Zhang Jihong
2004, 18(3): 126-129.
[Abstract](34) [PDF 203KB](8)
Abstract:
From research on flat dilatometer test (DMT), the method of calculating bearing capacity of foundation by DMT is put forward. Take advantage of many DMT tested data from several projects in Shanghai, through the contrast and analysis with laboratory test, static sounding test and vane shear test, the formulae of calculating bearing capacity of foundation are given, and the precision of the formulae is studied. The conclusion shows that the method is feasible.
Study on Soil Sensitivity in Shanghai Region
Fan Xiangyang, Gu Guorong, Huang Hongwei
2004, 18(3): 130-132.
[Abstract](29) [PDF 142KB](10)
Abstract:
The concept of soil sensitivity is introduced briefly.The method of measuring soil sensitivity by the ratio of side friction resistances from single bridge and double bridge cone penetration test is put forward for the first time. Based on a great deal of test data, to shallow strata in shanghai, the soils sensitivity determined by several methods are counted and analyzed.The recommendatory values of soils sensitivity are given in the end.
In-situ Test and Finite Element Calculation for the Pressure Acting on the Culvert with High Embankment
Liu Jing, Xie Yongli, Liu Baojian
2004, 18(3): 133-137.
[Abstract](37) [PDF 248KB](5)
Abstract:
According the in-situ test and the calculating result of the finite element program, the stress and deformation properties of the culvert with high embankment are studied. The reasonable and effective suggestions for the engineering are offered.
Sequentially Reinforced Section of Tailings Sand Reinforced with Geotextile
Wang Fengjiang, Wang Laigui
2004, 18(3): 138-140,143.
[Abstract](29) [PDF 370KB](4)
Abstract:
Triaxial compression tests are used to study the deformation and failure mechanism of tailings sand reinforced with geotextile under different layer.The results show there are same behavior of deformation and failure between tailings sand reinforced with one layer geotextile and single tailings sand.With the increase in layer number of geotextile, there are many sequentially reinforced sections born in the sample which are parallel to the plane of geotextile and control the development of shear deformation.The samples represent some higher bearing capacity after strength point. The influence come from sequentially reinforced section to the increase of reinforced soil has been discussed lastly.
Research on Checking Method for Soft Substratum
Kong Xiangguo
2004, 18(3): 141-143.
[Abstract](27) [PDF 142KB](9)
Abstract:
According to the national standard of the design of building foundation, some question of the bearing capacity checking method for soft substratum are analyzed, meanwhile, suitable methods are put forward.
Visual Terrain Model of Landslide
Tian Jinhua, Chi Xiuwen, Xia Yuanyou
2004, 18(3): 144-146,153.
[Abstract](35) [PDF 399KB](4)
Abstract:
Introducing the techniques of digital terrain model of landslide visualization and the main functions and features of the visual software IDL Combining TRIGRID function with TRIANGULATE function in IDL, the regular network terrain model based on Delaunay triangular network is set up.Finally,the significance of the research on visual terrain model of landslide is discussed.
Data Analysis of the Seepage Pressure on Zhangshan Sluice
Shen Jianxia, Wan Qianshan, Zhu Qinghua
2004, 18(3): 147-150.
[Abstract](29) [PDF 319KB](4)
Abstract:
The seepage pressure on the base of the sluice is a very important force, which influences the stability of the sluice tremendously. When the sluice is influenced by many factors such as the water head upstream, the water head of the aquifer and the seepage lagging of clay foundation, it is very difficult to estimate the value of the seepage pressure on the sluice bottom. A series of data on Zhangshan sluice are analyzed to find the changing rules and the influential factors of the seepage pressure, which laies the base for the stability calculation.
NHC Silicon Stabilization Method and Its Application
Shang Jihong
2004, 18(3): 151-153.
[Abstract](36) [PDF 326KB](4)
Abstract:
A new silicon stabilization method is introduced,which has been used in dozens of engineering projects successfully. The principle and characteristic are presented and several engineering cases are also demonstrated.
The Application Research on Plies Bottom Static Loading Test of Big Diameter Rock-socketed Bored Piles
Kong Fanlin, Zhou Haiying
2004, 18(3): 154-156,160.
[Abstract](50) [PDF 192KB](8)
Abstract:
A new satic loading test method (piles bottom static loading test) is applied to big diameter rock-socketed bored piles in Chongqing. It is solved that design parameters are obtained through the in-situ test. The reserch result and test data can be used to calculate the resistance of pile.
Application of Transient Rayleigh Wave Method in Inspecting the Composite Foundation in Loess Area
Wang Donghong, Xie Xing, Zhang Jiwen
2004, 18(3): 157-160.
[Abstract](35) [PDF 356KB](5)
Abstract:
Rayleigh wave exploration method is a new technique,it can be used in geotechnical engineering extensively.On the basis of the research of character and the inspecting principle of Rayleigh wave through engineering example,discussing the application of Rayleigh wave method in inspecting lime-soil pile composite foundation and lime-soil cushion in loess area.
Development and Application of the Static Sounding Equipment Used in Water Zone
Liu Rongyi, Chen Guangshun
2004, 18(3): 161-162.
[Abstract](47) [PDF 113KB](5)
Abstract:
In order to obtain the static sounding test materials of the Changjiang river for a tunnel's design,the static sounding equipment used in water zone is developed and applied.

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