2003 Vol. 17, No. 4

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Study on Engineering Properties of Nanometer Silica and Cement-stabilized Soil
ZHU Xiang-rong, WANG Li-feng, DING Tong-fu
2003, 17(4): 187-192.
[Abstract](32) [PDF 250KB](6)
Abstract:
With nanometer silica selected as cement-stabilized additives,compressive strength and deformation properties of cement-stabilized soil are discussed on the basis of a lot of laboratory tests. It is pointed out there has a proper nanometer silica content for compressive strength,and by using orthogonal test the magnitude of compressive strength influence factors are analyzed. At last the author discusses the statistical laws and relations between failure strain,deformation modulus and confined pressure,compressive strength of cement-stabilized soil.
The Application and Research of the Technology of Sliding Micrometer in Pile Frictional Resistance Test
SHI Huai-qing, ZHANG Jie, RU Bo-xun
2003, 17(4): 193-196.
[Abstract](38) [PDF 337KB](5)
Abstract:
This paper illustrates the essential principle and characteristic of the sliding micrometer,and by an engineering case proposes that it can raise the test accuracy of pile frictional resistance,considering some factors such as the nonlinearity of stress and strain of pile shaft concrete and the variation of pile diameter,and discusses the solution way of the non-homogeneity of pile shaft concrete.
The Comparative Research on Fundamental Properties of Dredger Fill in Different Areas
LIU Ying, WANG Qing, XIAO Shu-fang
2003, 17(4): 197-200.
[Abstract](22) [PDF 173KB](6)
Abstract:
The fundamental properties which include substance composition,physicochemical characteristics and elementary engineering properties of dredger fill in Lianyungang and Qingdao area are studied statistically.The differences between these two areas on fundamental properties are found.These differences result from the resource of sediment in blow filled environment and the hydraulic conditions as dredging.These results provide important basis for further investigation on sedimentary environment and other properties of dredger fill.And these studies lay the foundations for the development of earth reclamation and soft soil treatment.
Internal Force and Deformation of Resisting Structure with Interaction of Soil and Structure
LIU Zong-guang, KONG De-zhi
2003, 17(4): 201-204.
[Abstract](35) [PDF 296KB](7)
Abstract:
The mechanism of soil pressure on resisting structure is analyzed.It is pointed that the soil pressure should be plotted out two parts,one part caused by excavating and unloading,another caused by displacement of resisting structure.The elastic ground beam subsection-method with interaction of soil and structure for resisting structure analyzing is offered.
Application of Transient Rayleigh Wave Method in the Exploration of Bridge Foundation
HUANG Wan-qing, LUO Shu-xue, WANG Jian-zhen
2003, 17(4): 205-208.
[Abstract](30) [PDF 340KB](8)
Abstract:
With the practical examples this paper deals with the basic principle of the transient Rayleigh wave method,the technique of data processing and the field work method.The reliability of applying this technique to the exploration of the bridge foundations is illustrated and some problems are pointed out at the same time.
Deposit Characteristic and Shear Strength of Tailing Sand
WANG Feng-jiang, ZHANG Zuo-wei
2003, 17(4): 209-212.
[Abstract](30) [PDF 174KB](6)
Abstract:
Based on the data from geological exploration and experiment of some tailings reservoir at home,this paper discusses the granule variational rule of tailings sand on plane and vertical plane,considering that the correlation to the angle of internal friction unde different granularity,water content,void ratio and relative density.The results show that the void ratio and relative density has great influence on the angle of intenal friction,which is irrelative to the deposit depth.In order to improve the stability of tailings dam,the perfect method is suggested to increase the relative density or decrease the void ratio of tailings saind which can be reinforced by geotextile and bear higher cohesion.
The Study on Constitutive Equations of a Transversely Isotropic Foundation and Its Application
QIAO Shi-fan, DUN Zhi-lin, LIU Bao-chen
2003, 17(4): 213-219.
[Abstract](27) [PDF 275KB](3)
Abstract:
Based on the constitutive equations of a transversely isotropic foundation whose isotropic plane is horizontal,those of a transversely isotropic foundation whose istropic plane is inclined are presented.And on the basis of certain postulates,the computational methods about gravity stress of a transversely isotropic foundation in the above two conditions are obtained.The results of examples in this paper are accord with the measured gravity value.According to the results,those important actual measurements can be explained that horizontal stress is larger than vertical stress and horizontal stress is anisotropic on the aspect of gravity.
Analysis for the Standard Vertical Limited Bearing Capacity of the Single Prestressed Concrete Drilled Caisson
LI Lian-ying, LU Qing
2003, 17(4): 220-223.
[Abstract](40) [PDF 255KB](5)
Abstract:
On the base of the several static load test results in Tianjin district,analyzing and studying the estimate results of the standard vertical limited bearing capacity of the single prestressed concrete drilled caisson.Furthermore,comparing the results to that of the 〈Technical code for building pile foundations〉.(JGJ 94-94) and Tianjin 〈Technical code for geo-technical engineering〉.(DB 29-20-2000).
An Attempt to Design the Anchored Bulkhead Masonry Retaining Wall with the Method of Assort with Deformation
DENG Wei-dong, ZHANG Ying-jian
2003, 17(4): 224-225,232.
[Abstract](35) [PDF 254KB](4)
Abstract:
The natural subsoil exclusive of fracture surface is regard as a elastomer of coefficient of subsoil increasing by depth, with method of assort with deformation,when safety factor is known,working out the tensile force of tendon draw and the displacement of wall and anchored. In essence, checking computation intensity of tendon draw instead of stability of wall.
Study on Fractal and Fractal Dimension of the Expansive Soil Grains Radii in Hefei Region
WANG Zhi-liang
2003, 17(4): 226-229.
[Abstract](36) [PDF 169KB](5)
Abstract:
The theory related to fractal geometry is introduced,and the simple calculation formula of fractal dimension of expansive soil particles is deduced with the presentation of their mass fractal characteristic function.Furthermore,several representative expansive soil samples of Hefei region are analyzed and handled with sieve method and densimeter method.At last the rough slope of fractal dimension value of radii of expansive soil particles is obtained,which could be the basis of further study on the character and structure of the expansive soil in this region.
Maximum Dry Density's Curve Fitting Method Solution of Filling Material
LU, Peng, DENG Hai
2003, 17(4): 230-232.
[Abstract](58) [PDF 143KB](4)
Abstract:
On the basis of many test result analyses,presenting a method to determine the quadratic function relationship between the dry density and the moisture content,then working out the maximum dry density and optimum moisture content by this function's extremum.solving the randomicity problem in manual work.
Optimal Design of CFG Pile Composite Foundation by Orthogonal Experiment
GUO Ming-tian, DING Yong
2003, 17(4): 233-236.
[Abstract](30) [PDF 175KB](4)
Abstract:
Through the orthogonal experiment of main design parameters such as diameter,length and distance of CFG pile,analyzing the influence of these parameters to the effect of foundation treatment,and proposing a optimal design method of CFG pile composite foundation.
Comparison for the Composite Foundation with Plain Concrete Pile by Two Types of Construction Technology
ZHANG Hui-hai, ZHENG Jian-guo, XING Xin-kui
2003, 17(4): 237-239,243.
[Abstract](30) [PDF 323KB](5)
Abstract:
By means of static loading test and pile dynamic test methods, two buildings' composite foundation with plain concrete pile are tested. By contrasting of the plain concrete pile integrity and the composite foundation's bearing capacity for the two types of construction technology, it is proved that in the region of Xi'an, the twist drill concrete pile is better than the driven cast-in-place pile.
Constructional Technology of Drilling Bottom-enlarged Grouting Pile for a High-rise Building
LI Yu
2003, 17(4): 240-243.
[Abstract](26) [PDF 334KB](4)
Abstract:
According to the engineering practice,introducing the technical points of drilling bottom-enlarged grouting pile,pointing out the technical measurements of prevention and treatment in the construction.
GIS Application in Habitation Property Management
CHEN Yun-tao, TAO Yi-jun
2003, 17(4): 244-248.
[Abstract](71) [PDF 355KB](5)
Abstract:
Geographic Information System(GIS) has the superiority in image and data process, GIS application in habitation management is very helpful to the management of figure and graphic documents, which makes the visual management possible. The manager can also use the function of analysis and decision of the system to make work become more standardized, use all of information effectively, ensure the integrity of data. It can also improve the efficiency of information query and make the information shareable.

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