2000 Vol. 14, No. 2

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2000, 14(2): 63-66,71.
[Abstract](42) [PDF 374KB](6)
Abstract:
The finite element method(FEM) is usually used to calculate side displacement of retaining wall in deep excavation. Herein the interrelated theory of elasticity mechanics is opted for analyzing the side displacement of underground diaphragm wall. The practical example indicates that the calculation value can be better coincided with the actual test value.
2000, 14(2): 67-71.
[Abstract](43) [PDF 402KB](5)
Abstract:
The supporting design of combining bar-diaphragm wall with anchor can not only ensure the stability and safety of the supporting structure,but also diminish the technical difficulties.
2000, 14(2): 72-74,79.
[Abstract](37) [PDF 179KB](6)
Abstract:
The design and construction of foundation pit supporting of Electricity Application Cener Plaza of Changzhou city is introduced, in which the technique of castinsitu bored pile, pressure grouting cofferdam and anchor rod is used.
2000, 14(2): 75-79.
[Abstract](40) [PDF 206KB](8)
Abstract:
Shenzhen Seagull Square high-rising building is the tallest steel-tube cement structure in the world.Reversed Construction Method(RCM) is used to construct its basement.
2000, 14(2): 80-83.
[Abstract](37) [PDF 343KB](5)
Abstract:
The advantages of freezing method and some problems that may meet when use this technique, such as creep behavior in frozen soil, freezing-induced expansion, insulation of frozen soil walls the design of frozen diaphragm wall and so on, are discussed. The structural styles of arch-top frozen soil is presented.
2000, 14(2): 84-87.
[Abstract](32) [PDF 348KB](7)
Abstract:
The application and adaptation of soil nailing in different geological conditions and surroundings in Wuhan are introduced. And the existing problems under engineering construction, as well as its application and developing prospect are discussed.
2000, 14(2): 88-91.
[Abstract](56) [PDF 185KB](11)
Abstract:
Based on analyzing several engineering test results on foundation soil by SPT, the ultimate bearing capacity of single pile is estimated. It is also compared to the results of vertical static loading tests. Then empirical formulas for estimating the ultimate bearing capacity of prefabricated single pile in Fuzhou district is put forward.
2000, 14(2): 92-94.
[Abstract](36) [PDF 265KB](5)
Abstract:
Based on the pile-testing and pile data collected from actural engineering projects,probability method is used to assess the bearing capacity of single pile under different bearing plates.
2000, 14(2): 95-98.
[Abstract](37) [PDF 316KB](8)
Abstract:
Based on engineering projects, using static loading test,stress measurement and high strain test to comprehensively assess the bearing capacity of piles is introduced.
2000, 14(2): 99-101,108.
[Abstract](33) [PDF 295KB](5)
Abstract:
Through the research of bearing capacity of gravel piles used in the first segment of a certain highway in Guangzhou, the regulation of piles and soil as well as the mechanism and characteristics of gravel piles used to treat soft soil is analyzed.
2000, 14(2): 102-104.
[Abstract](47) [PDF 409KB](5)
Abstract:
Some existing problems in design and test of lime piles used to treat soft soil are discussed. The proposals of solving these problems are put forward.
2000, 14(2): 105-108.
[Abstract](26) [PDF 312KB](5)
Abstract:
Through in-door experiment and in-situ test,action principles of rectifying and reinforceing accomplished buildings by using two-lime piles and its composed materials' optimum mixed proportion is studied. This technique has already been used in practical engineering.
2000, 14(2): 109-113,117.
[Abstract](32) [PDF 259KB](4)
Abstract:
Some regularity of reliability analysis on soil slope stability is discussed by using JC method which is a reliability analysis method. The influence of the averages and variation coefficient of shear strenth on reliability index is jointed out The relationship between reliability index and safety factor are researched and their relation curve is drawn.
2000, 14(2): 114-117.
[Abstract](26) [PDF 186KB](8)
Abstract:
A synthetic assessment method that evaluate stability of rock slope is presented. Nine factors and their quantitative methods that control the stability of slope is analyzed. Based on the result of the analysis on a certain slope in Shiyan district, it is shown that the method is effective and available for surveying and slope treatment.
2000, 14(2): 118-121.
[Abstract](34) [PDF 327KB](4)
Abstract:
The concept and types of prebacing piles are introduced.The mechanic characteristics and deformation properties of combined bolting and shotcrete supporting structure with prebracing piles is analyzed. Then a certain excavation engineering example using this supporting technique is introduced.
2000, 14(2): 122-124.
[Abstract](40) [PDF 260KB](5)
Abstract:
Borehole cast-in-place piles have many advantages,such as high bearing capacity of single pile,no noise with construction,no special equipment needed and so on. According to these, they have been widely accepted to foundation engineering. But this technique is much reliable to its construction method, hydrogeological and engineering geological condisions. If it is not considered any factor to use this technique, it must resulted in harmfulness. Based on analyzing the foundation settlement with Borehole cast-in-place piles of a seven-floor structure in Lanzhou, which is built on subsidence loess and man-filled soil,treating method of this harmfulness and its engineering practice are introduced.

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