Compared with single or twin tunnels, the pressure arch effect of deeply buried, symmetrically distributed triple tunnels are more complex and less studied. In this paper, arching responses in-situ measured in Badaling Great Wall station. Numerical research is subsequently conducted to investigate formation development tunnels. Then, influencing law buried depth on behavior systematically Based...

In this paper, the membrane effect of geogrid reinforcement was investigated based on numerical simulation to understand serviceability and deformation highway piled embankments under moving vehicle loads. The in low (i.e., ratio embankment height pile spacing is less than 1.5) clearly emphasized. It has been found that maximum settlement occurs central area between piles, tension concentrated ...

in this study, the mechanical behavior of vanyar dam was evaluated at the end of construction. a two-dimensional numerical analysis was conducted based on a finite element method on the largest cross-section of the dam. the data recorded by the instruments located in the largest cross-section were compared with the results of the numerical analysis at the place of instruments. the settlement, p...

several relationships to assess at-rest pressure coefficient in retaining walls, have been developed by different researchers. these suggested relationships are generally a function of mechanical soil parameters such as internal friction angel, poison ratio and over-consolidation ratio. in integral bridges, however, this coefficient is also a function of many other parameters other than soil ch...

The various criteria used for graduating the thickness of violin plates are discussed. These are shown apparently to be conflicting. A case is made that the flexural stiffness of the plates should be given priority. A simple indirect method is given for finding the flexural stiffness of the plates without the need to flex them in the hands or to apply forces and measure deflections. The method ...

BACKGROUND It has been proposed that gains would be made in the validity of the psychiatric classification system if many of the present 'neurotic' or personality disorders were subsumed into two over-arching groups, externalising and emotional disorders. If diagnostic sub-categories from the first digit coding structures within ICD-10 do, in fact, share clinical phenomenology that align with t...

Two ground deformation modes, i.e., the arching mode and collapsing mode, may be caused by tunnel excavation. However, development of corresponding to two modes is unclear. A piece a model test facility designed study settlement induced Tunnel excavation realized decreasing area tunnel. tests with different soil cohesion are conducted, form in tests, respectively. The former observed at higher ...

The aim of the study is to examine the process of change with age of hard and total palate arching. Differences were compared in the arching of the hard and total palate in pairs of twins of the same sex and in pairs of twins of opposite sexes aged between 4 and 7 months of foetal life. On the basis of the results obtained it may be stated that: 1. There is some delay in the process of developm...