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Study on mechanism of fiber grouted material in pre-stressed anchor rope

中国科学：技术科学英文版 2003年第Z1期46卷 188-197页

作者： he siming, qiao jianping & {3. chenghua institute of mountain hazards and Environment, chinese academy of sciences and ministry of water resources, chengdu 610041, china chinese Acad Sci Inst Mt Hazards & Environm Chengdu 610041 Peoples R China Minist water resources Chengdu 610041 Peoples R China

The fiber grouted material can reinforce the tension strength, shear strength as well as the index of fracture ductile, and remarkably improve the endurance of pre-stressed anchor rope under long-time loading. As a result, it has the better application foreground. Based on the shear log model and Hashin-Shtrikman upper and lower limited theorem, we have studied the mechanism of fiber grouted material applied in pre-stressed anchor rope and material property, and analyzed the effect of resistance strength of bond, resistance distribution of anchor section and the loading-deformation relationship of anchor body.

关键词： fiber grouted, pre-stressed anchor rope, shear log model, Hashin-Shtrikman upper-lower limited theorem.

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Behavior of pre-stress group anchors——Theory approach and model

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Science china(Technological sciences) 2003年第Z1期46卷 31-41页

作者： he siming, wang chenghua & {3. jianping institute of mountain hazards and Environment, chinese academy of sciences and ministry of water resources, chengdu 610041, china chinese Acad Sci Inst Mt Hazards & Environm Chengdu 610041 Peoples R China Minist water resources Chengdu 610041 Peoples R China

First of all the pre-stress group anchor ropes are resolved into two sub-systems: the stable rock stand lateral resistance load and inner bonding section stand lateral resistance load and pre-stress load. Then, discretization of every sub-system was carried on and it is assumed that different micro-sections possess uniform distribution side resistance. On the basis of Mindlin stress solution, stress overlay principle, modified layered-summation method as well as the load transfer method, we study the anchor group effect and present a theory model which calculates the anchor group effect and establishes the relevant iterate standard.

关键词： anchor group effect, Mindlin's stress solution, discretization, iterative solution.

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GIS-based Earthquake-Triggered Landslide Hazard Zoning Using Contributing Weight Model

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Journal of mountain Science 2010年第4期7卷 339-352页

作者： wang Meng institute of mountain hazards and Environment ChineseAcademy of Science Chengdu 610041 China Graduate University of chineseacademy of sciences Belling 100049 China Key Laboratory of Geo-surface Process and mountain hazards Institute of Mountain Hazards and Environment Chinese Academy of Science Chengdu 610041 China

Earthquake-triggered landslides have aroused widespread attention because of their tremendous ability to harm people's lives and *** best way to avoid and mitigate their damage is to develop landslide hazard maps and make them available to the public in advance of an *** construction can then be built according to the level of hazard and existing structures can be retrofit as *** recent years various approaches have been made to develop landslide hazard maps using statistical analysis or physical ***,these methods have *** study introduces a new GIS-based approach,using the contributing weight model,to evaluate the hazard of seismically-induced *** this study,the city and surrounding area of Dujiangyan was selected as the research area because of its moderate-high seismic *** parameters incorporated into the model that related to the probability of landslide occurrence were:slope gradient,slope aspect,geomorphology,lithology,base level,surface roughness,earthquake intensity,fault proximity,drainage proximity,and road *** parameters were converted into raster data format with a resolution of 25×25m2 *** of the GIS correlations shows that the highest earthquake-induced landslide hazard areas are mainly in the hills and in some of the moderately steep mountainous areas of central *** highest hazard zone covers an area of 11.1% of the study area,and the density distribution of seismically-induced landslides was 3.025/km2 from the 2008 Wenchuan *** moderately hazardous areas are mainly distributed within the moderately steep mountainous regions of the northern and southeastern parts of the study area and the hills of the northeastern part;covering 3..0% of the study area and with a density distribution of 2.123.km2 resulting from the Wenchuan *** lowest hazard areas are mainly distributed in the topographically flat plain in the northeas

关键词： Earthquake-triggered landslide GIS Contributing weight model Hazard zoning

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