assessment of tunnel face stability in unsaturated media based on limit analysis method mohammad amin nozari; mohammad maleki; behnam yousefi             analysis of the causes of contractor’s claims in the db contracts of underground projects in iran hadi talkhabi; majid parchami jalal; mahmood golabchi                         quality assessment of segmental lining installation in mechanized e...

This technical note investigates the effect of footing embedment depth on tunnel–structure interaction using geotechnical centrifuge testing. A 2-story framed building separate footings, either resting directly surface or embedded in soil, and subjected to tunneling-induced displacements is modeled. Measurements footings underlying ground deformations, structural distortions are presented. Resu...

The planned new Heavy Ion Synchrotron SIS 100/300 for the FAIR Project will consist of two separate tunnels. In addition to the tunnel where the beam lines itself will be situated, there will be an additional tunnel, for maintenance and supply purposes. This maintenance tunnel is desired to be accessible for technical personnel also during beam operation. Therefore, from the radiation safety po...

Recent earthquakes have shown that tunnels are prone to damage, posing a major threat safety and having cascading socioeconomic impacts. Therefore, reliable models needed for the seismic fragility assessment of underground structures quantitative evaluation expected losses. Based on previous researches, this paper presented probabilistic framework based an artificial neural network (ANN), aimin...

Faba bean (Vicia faba L.) is a highland legume having potential for soil conservation. Upscaling cultivation requires initial inquiry on its growth and yield. In this research, we have investigated bean’s yield in different location (high tunnel open field) under population density (1, 2, 3 plants per pot). We found that interaction between has significant effect number of leaves, shoot fresh w...

Slope stability analysis is a geotechnical engineering problem characterized by many sources ofuncertainty. In slope stability computations, some of these sources are encountered, such as geologicaldetails missed in the exploration program, estimation of soil properties that are difficult to quantifyand many other relevant factors. Therefore, accurate reproduction of the spatial variability in ...

Orientation by an animal inhabiting an underground environment must be extremely efficient if it is to contend effectively with the high energetic costs of excavating soil for a tunnel system. We examined, in the field, the ability of a fossorial rodent, the blind mole-rat, Spalax ehrenbergi, to detour different types of obstacles blocking its tunnel and rejoin the disconnected tunnel section. ...

The purpose of this paper is to review computational methods in structure-soil-structure interaction. As a result of globalization, buildings are located close to each other. This issue happens especially in big cities, making the study of structure-soil-structure interaction as an essential part of structural design process. The effect of soil medium, on which the building structure stands, es...