نتایج جستجو برای: soil tunnel interaction
تعداد نتایج: 772477 فیلتر نتایج به سال:
During wars and crises, the underground tunnels are used as a safe space. Therefore, the stability and safety of them under a blast is of particular importance. In this paper, the Finite Difference Method has been used to study the influence of the change in geotechnical parameters and depth on surface blasting on subway tunnels. Results showed that increasing the internal friction angle, modul...
The numerical prediction of vibration in buildings due to underground railways involves modelling many physical phenomena. Not least these is the dynamic soil-structure interaction that exists between various elements system. majority existing models assume railway tunnel and building’s foundation negligible, with two sub-systems behaving as though they are uncoupled. This paper presents some i...
In order to apply damping technology complex interaction system, a two-dimensional finite element-infinite element coupling model of tunnel-soil-surface building system was established by ABAQUS. By analyzing the acceleration, displacement and stress response key points tunnel surface buildings, influence thickness buried depth shock absorption layer on effect is studied when (or foundation lay...
In this paper, the influence of foundation configuration (raft or separate footings) on tunnel–soil–framed building interaction is investigated using geotechnical centrifuge testing. Tunnelling-induced soil movements and deformation fields, framed displacements structure shear distortions (with associated modification factors) are illustrated. Framed stiffness footing bearing capacity also eval...
Hyperstatic Reaction Method (HRM) is a simple but effective method with attractive features in calculating internal forces and deformations of the tunnel lining. The superior ability HRM under static conditions inspires further development this for seismic design. This paper implements an improved estimating seismic-induced lining quasi-static condition. To end, modification parameter (a) appro...
ground settlement due to the shallow tunneling in urban areas can have considerable implications for aboveground civilinfrastructures. engineering geological characteristics of the tunnel host ground including geotechnical parameters of surrounding soil,groundwater situation, and in situ stress condition are amongst the most important factors affecting settlement. in this research, groundsettle...
Ground settlement due to the shallow tunneling in urban areas can have considerable implications for aboveground civilinfrastructures. Engineering geological characteristics of the tunnel host ground including geotechnical parameters of surrounding soil,groundwater situation, and in situ stress condition are amongst the most important factors affecting settlement. In this research, groundsettle...
the pull- out strength of the reinforcement has a significant role on the function of the most reinforced soil structures. since the coarse grain soils have a better interaction with the reinforcement, they are mostly used in these structures. in most situations, we have to transfer these granular soils from the borrow area, usually far from the site of the project. this will impose a considera...
clogging occurs during mechanical tunneling with a tunnel boring machine (tbm) because of adhesion of clayey soils to the cutterhead and conveyor system. the present study examined the effects of water and sand contents on clogging in montmorillonite clayeysoil. testing was carried out using an adhesion test device on 28 samples with different water and sand contents to determine adhesionstress...
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