2004 Vol. 18, No. 4

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专题报告
The Advance and Some Problems of Pile Foundation
Wu Yonghong, Li Wenchun, Weng Lunian
2004, 18(4): 163-167,183.
[Abstract](45) [PDF 462KB](11)
Abstract:
Focusing on the advance of pile-soil interaction theory research,the techics of base grouting cast-in-situ pile and cast-in-situ pile with expanded branches and plates are introduced.Some important problems are also discussed.
技术开发与创新
Application and Research of GPR in Strate's Strafication
Sun Jian, Bai Mingzhou, Wang Lianjun
2004, 18(4): 168-171.
[Abstract](39) [PDF 261KB](6)
Abstract:
The exploring principle and the application state of GPR technology are introduced,through a engineering practice,the fessibility of strafication by using GPR is discussed.
Experimental Study on the Deep and Thick Soft Ground Treated withPrefabricated Vertical Drains Combination with Heaped -Preloading
Wang Xiang, Zhou Shunhua, Gu Xiangsheng
2004, 18(4): 172-176,186.
[Abstract](47) [PDF 502KB](5)
Abstract:
Taking the results of the test on the soft ground treated with prefabricated vertical drains on the Guangzhou Zhuhai Qusai High speed Railway for example,a series of problems about the deep and thick soft ground are analyzed,such as the change of the settlement of the soft ground,pore water pressure,soil pressure,deformation of the geogrid,horizontal displacement in the deep soil.
FEM Analysis for the Rock Slope of Mian-Ning Highway
Gu Shuancheng, Han Jiaming
2004, 18(4): 177-179.
[Abstract](27) [PDF 311KB](3)
Abstract:
Based on the constraction of the highway from Mianxian to Ningqiang,the finite element model of slope is set up by geologic character and physical parameter. The factor of safety is caculated by ANSYS 61 program and the method of strength reduction. As a result,the stability of slope is evaluated.
Influence on Soil's Deformation with Consideration of Stress-induced Anisotropy
Zhang Kunyong, Yin Zongze
2004, 18(4): 180-183.
[Abstract](40) [PDF 213KB](5)
Abstract:
Induced anisotropy has important influence on soil's deformation character under complex stress state.Traditional constitutive model with isotropic assumption cannot describe this character.Soil under partial load is analyzed with FEM,which apply the anisotropic-non linear elastic model.The kesrlt is compared with commonly used Duncan-Chang model.It is proved from the analysis that the influene on soil of induced anisotropy is considerable.
The Improvement Design on the Inner Structure of Subterrene
Han Bing, Cao Pinlu, Chen Chen
2004, 18(4): 184-186.
[Abstract](26) [PDF 313KB](3)
Abstract:
The subterrene drilling method is a new excavation technology Since the 60's of 20 centuries when the United States started studying drilling exploring,the structure design and material choice of subterrene has not been determined unanimously Studies of our country in this respect are late Based on the results of experimental study,the author take thesubterrene with 80mm diameters as an example to proceed the improvement design on its inner heating resistor structure
Application of the High Density Resistivity Methodin Hu-Rong Highway Survey
Zhang Liangguo, Xu Yixian, Wang Yunan
2004, 18(4): 187-190.
[Abstract](65) [PDF 209KB](3)
Abstract:
The basic theory is introducded at first,then some examples about application of the high density resistivity method in Hu-Rong highway survey are introduced,and some advices about application of the high density resistivity metbod are suggested.
技术探索与研究
Analysis for Bearing Capacity of Foundation Soils
Li Baoqiang
2004, 18(4): 191-193,198.
[Abstract](51) [PDF 183KB](9)
Abstract:
Combining with the p-s curve of load test,using the limit balance theory of soil mass,a series problems of foundation soils are analyzed,such as deformation character,bearing capacity and its amendent.The result shows that the bearing capacity of foundation soils is not only the function of shear strength,but also related with the depth and width of foundation,and other else facrors.Some suggestions about the amendent of bearing capacity are given.
Study on Calculating Method of Ground Subsidence Caused by Pit-dewatering
Xu Xijin, Li Dongxia
2004, 18(4): 194-198.
[Abstract](51) [PDF 223KB](8)
Abstract:
Discussing the reason for the formula to calculate ground subsidence is corrected by feedwater percentage (μ)in the cohesive soil for the dewatering of pit,putting forward the specific methods and theoretical formulae of the subsidence calculation for building and its different sites away from pit.
Discussion for the Questions of Micro-tremor Testing
Li Youpeng, Zou Guigao
2004, 18(4): 199-203.
[Abstract](62) [PDF 402KB](9)
Abstract:
discussing the testing technology of micro-tremor and the questions which should be regarded but be ignored,and putting forward some different viewpoints for the parameters of magnitude domain and frequency domain。
RTK Technology in Cadastral Survey
Wang Shengguo
2004, 18(4): 204-208.
[Abstract](35) [PDF 211KB](3)
Abstract:
RTK is a new technology of GPS,Which has already been used in many aspects of surveying.The relative techniques of GPS RTK in cadastral survey are introduced,through comparison with other techniques in this field, putting forward the basic viewpoint of GPS RTK accompanied with TPS to be used in cadastral survey.
综述性论文
Summary on Quality Problems of Building Costruction in Collapsible Soil Area
Zhu Shenyang
2004, 18(4): 209-212.
[Abstract](41) [PDF 368KB](4)
Abstract:
Expownding the proplems of site investigation,design and donstruction in collapsible soit area,and provding some engineering cases,It can be refered by the later engineering constraction in callapsible soil area.
The Current Research Method & Evaluation of the Constitutive Model of Rock Mass
Yang Xuetang, Wang Fei
2004, 18(4): 213-217.
[Abstract](30) [PDF 215KB](4)
Abstract:
Presenting a review of the research on the constitutivemodels for rock mass.Emphasis is put on the new development of research methods for rock constitutive model.including intensity theory,constitutive model of plasticity theory,damage constitutive model.And the develop prospects and problems not resolved of each method are appraised. Finally some opinions onchoose of research methods are presented.

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