2006 Vol. 20, No. 6

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Test Study of the Characteristics of High-plastic Soil Being Used in Road
SHI You-zhi
2006, 20(6): 271-274.
[Abstract](28) [PDF 513KB](5)
Abstract:
Conbined with a case study, the strength characteristics of high-plastic soil in saturating of capillary is studied through soaking CBR test. The characteristics of high-plastic soil used in road are disclosed. Based on results of laboratory tests and field tests, the path and method of high-plastic soil used as subgrade material indirectly without addition agent are investigated.
Integral Method and Application For Dynamic Stability of Slope Under Blasting Loads
CHEN Ze-guan, LIN Cong-mou, HUANG Zhi-hui
2006, 20(6): 275-277,286.
[Abstract](45) [PDF 421KB](5)
Abstract:
The stability of rock slope under the effect of blasting excavation is so important to be solved urgently. After the blasting test on the actual project, the propagation rule of blasting wave is obtained, which can take the elevation effect into account. Using the quasi-static method to calculate the inertia force of blasting. The integral method is put forward to analyze the dynamic stability of slope under the effect of blasting vibration for the first time. Besides, it searched the most dangerous sliding surface and gained the minimum safety factor through the program of MATLAB. This method is proved to be one of the most valid methods to study the dynamic stability of slope through the sample.
Fuzzy Reliability Analysis to Soil Slope Engineering
ZHAO Ping, HUI Bo
2006, 20(6): 278-281.
[Abstract](26) [PDF 358KB](6)
Abstract:
The way to build membership function detailedly of soil nailing supporting invalidated model is introduced, and a fuzzy reliability analysis to soil slope engineering which protected by soil nailing. The outcome shows that apply fuzzy reliability theory to soil nailing is credible, and the analysis is help for the research about fuzzy reliability.
Long Term Settlement Deformation Behaviour of Soft Rock Filling Materials
QING Qi-xiang, WANG Yong-he, ZHAO Ming-hua
2006, 20(6): 282-286.
[Abstract](48) [PDF 288KB](8)
Abstract:
The research on long term settlement deformation characteristics of kinds of representative soft rock filling materials for high speed railway embankment with site test, indoor test, model test is introduced. The tests show that except its characteristics and compaction density of soft rock-fill materials, weathering and wet-dry circulation are the major influence factors for long term settlement deformation behaviour of the materials.
Characteristic of Cure Measures For Landslide and Study of Optimization Design
KONG Xiang-guo
2006, 20(6): 287-289,323.
[Abstract](38) [PDF 288KB](6)
Abstract:
The characteristic of various cure measures for landslide and the applicable geology condition and geology environment is analyzed. The important point of optimization design and the way of optimization design is put forward.
Discussion on Landslide Safety Repertory Factor Weighed
YANG Zhuan-yun, WU Han-hui, LIU Hui
2006, 20(6): 290-293.
[Abstract](53) [PDF 351KB](6)
Abstract:
Based on choosing safety factor that has prodigious influence on effect and expense of prevention and cure in the landslide, whether safety repertory factor of landslide defined according to safety factor can weigh landslide safety repertory value behind being fathered or not is worth pondering over. Several criterions of different country and industry are listed in order to explain and discuss this problem. The conclusion indicates that safety degree analyse need consider safety repertory factor and stable factor behind being fathering,and put forward choosing value advice method of loads in the design of anti-sliding and supporting and holding up.
Study on Compound Soil-nail Surporting Technology
ZHANG Fan, CAO Zhen, LI Tao
2006, 20(6): 294-296,299.
[Abstract](48) [PDF 647KB](5)
Abstract:
The supporting system of self-drilling soil-nail with sealing wall made by SMW construction machine are discussed through foundation pit of a tunnel project. The mechanism of deformation and axial nail force is deduced with field test.
Study of Ordered Clustering Procedure in the Quantifying Classification on Weathered Rock Mass
FENG Wen-li, CUI Hong-qing, LIU Yuan-zheng
2006, 20(6): 297-299.
[Abstract](29) [PDF 137KB](11)
Abstract:
The way of ordered clustering is applied in the quantifying classification on weathered rock mass of Jinling Dam. It is compared and analyzed among the results of the way of ordered clustering, observing in geology and according criterion. Then the difference coefficients of rock mass are calculated. With the integrative analysis of all the results, it is recommended to adopt the result of the way of ordered clustering.
Zonation and Evaluationin of Engineering Geological Characteristics of Rock-soil Mass For Zhengzhou City
ZHENG Rong-hua, DU Zhen-chuan, ZHOU Jun-jie
2006, 20(6): 300-302.
[Abstract](77) [PDF 205KB](9)
Abstract:
Based on the actual engineering geological properties data, Zhengzhou city is divided into two areas and four subdivisions. Physical and mechanical properties of different rock-soil are studied in different areas and subdivisions. Ground bearing capacity and suitabilities of structure are appraised and disposal schemes are suggested for unfavorable condition.
Analysis on Geotechnical Engineering Inuestigation Features of the First-phase Project of Wuhan No.2 Subway Line
PENG You-jun
2006, 20(6): 303-306,310.
[Abstract](58) [PDF 447KB](7)
Abstract:
Through an analysis to the features of the regional geology structure, the engineering geology and the hydrology geology of the first-phase project of Wuhan NO. 2 subway line, the basic content and method is showed for geotechnical engineering investigation to the different method for the subway construction under the different physiognomy unit and the different geological condition. In addition, it is pointed out that the features of subway investigation which is different of the general industry and civil construction investigation in aspects on location condition, investigation request and test content. The investigation implementation can be plan reasonably according to these featuers.
Heavy Miscellaneous Fill Layer with Sizable Area Foundation Treatment Technology
LIU Huan-cun, GAO Feng-lian, XU Heng
2006, 20(6): 307-310.
[Abstract](42) [PDF 250KB](6)
Abstract:
Basedon an engineering case, heavy Miscellaneous fill layer's basic engineering properties are discussed through studying a project. By introducing a new foundation treatment technology named expanded and compacted ash residue soil column composite foundation by using heavy hammer, controlling construction process and analyzing detection result, heavy miscellaneous fill layer's collapsibility can be eliminated and its bearing capacity of composite foundation soil can reached to 200kPa.
Analysis on lateral bearing capacity of pile based on DMT
DAI Hong-jun, GUO Ji-zhong, LIU Xin-liang
2006, 20(6): 311-315.
[Abstract](35) [PDF 505KB](5)
Abstract:
Based on dilatometer test result, the proportional coefficient of lateral resistance coefficient in pile's lateral soil, and the design value of single pile lateral bearing capacity is estimated. Then based on the result of pile lateral load test, the average value of horizontal critical load is worked out, and the proportional coefficient of of lateral resistance is figured out. Through the eontrast and analysis on the both of calculation results, their lateral bearing capacity are very close, but the proportional coefficient is different. It is deemed that it is not suitable to use the test pile's results in the calculation of project pile's lateral bearing capacity, it should be based on the actual condition, and eonsiders the efficiency of pile groups about the pile caps,piles and soil.
Discussion on the Bearing Force Characteristic and the Failure Behavior of a New Kind Half-screwed Filling Pile
FANG Chong, ZHANG Xin-gui, PENG Gui-jiao
2006, 20(6): 316-319.
[Abstract](129) [PDF 288KB](5)
Abstract:
The half-screwed filling pile is a new kind of pile which has advantages of high bearing capacity, low construction cost, convenient construction, non-environmental pollution. The vertical load transmission mechanism thoroughly is analyzed about half-screwed pile based on the static load experiment results. Its bearing force characteristic and failure behavior is discussed and the reliability basis of the half-screwed pile design and construction is provided.
Base-grouting Influence Upon the Vertical Bearing Capacity of Bored Piles
WU Shuai-bin, GAO Fei
2006, 20(6): 320-323.
[Abstract](33) [PDF 343KB](6)
Abstract:
Based on the results of vertical static loading test of piles in the high-rise building, the influence of base-grouting on the bearing properties of pile is revealed by analyzing its properties of vertical limiting bearing capacity, axial load transmission and tip and shaft resistance of pile, load transfer performance and bearing mechanism is discussed in detail. In the end, a conclusion is deduced that the base-grouting is inevitable development trend of bored piles in Shanghai soft clay area.

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