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Trans. Nonferrous Met. Soc. China 22(2012) 1526-1532 A general method to calculate passive earth pressure on rigid retaining wall for all displacement modes PENG Shu-quan, LI Xi-bing, FAN Ling, LIU... the passive rigid retaining wall pressure was deduced considering all displacement modes. First, the general displacement mode function was setup, then the hypotheses were made that the lateral passive......
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"倒V"型变化趋势,倾角小于和等于45°的节理砂岩能量突变幅度均比倾角大于45°的节理砂岩的强. 图8 峰前节理砂岩能量突变幅度与节理倾角的关系 Fig. 8 Relationship between jointed sandstone energy mutation amplitude and dip angles of joint at pre-peak 岩体裂纹的萌生,起裂,扩展和贯通等源... at pre-peak 图10 峰后节理砂岩能量突变幅度与节理倾角的关系 Fig. 10 Relationship between jointed sandstone energy mutation amplitude and joint dip angle at post-peak 针对不同倾角下节理砂岩峰后变形破坏特征,利用峰后能量突变幅度(节理砂岩峰值点与破坏点能量之差的绝对值)来表征节理砂岩峰后裂......
; 文献标志码:A 文章编号:1672-7207(2011)01-0213-07 Intelligent back-analysis of tunnel surrounding rock displacement based on genetic algorithm...) Abstract: The learning samples and test samples were built based on orthogonal experimental design and FLAC3D numerical simulation, using the project site for the surrounding rock displacement......
and rail longitudinal displacement of CWR track on bridge in Budongquan region along Qinghai-Tibet railway ZENG Zhiping1, 2, ZHANG Xiangmin1, 2, SUN Yongning3, WANG Xuesong1, CHEN Xiufang1 (1. School...; 3. Qinghai-Tibet Railway Company, Xining 810007, China) Abstract: The experimental research and theoretical analysis about beam and rail longitudinal displacement of continuously welded rail (CWR......
) The influence of dynamic load frequency on the two-sides is more obvious; (2) The dynamic load amplitude has the greatest influence on the stress concentration degree, and the plastic failure tends... under same or similar conditions. Key words: deep mining; super-larger section chamber; static load; dynamic load frequency; dynamic load amplitude; dynamic load source distance Cite this article as: FAN......
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400045, China)Abstract:a small-scale physical modelling method was developed to investigate the pile bearing capacity and the soil displacement around the pile using transparent soil and particle image... before and after deformation were used to calculate the soil displacement field using PIV. Two pipe piles with different diameters under oblique pullout loads at angles of 0°, 30°, 45°, 60° and 90......
%. 关键词:气体组成; MMP; 驱油效率; 细管实验; gas component; MMP; displacement efficiency; slimtube experiment; [全文内容正在添加中] ......