This paper presents a coupled finite element-boundary element approach in the time domain for the calculation of the dynamic response of structures due to dynamic excitations as arising from traffic or pile driving. The dynamic soil flexibility is calculated with a boundary element formulation in the frequency domain. It is transformed to a force-displacement relationship in the time domain and...

This research is carried out to investigate and assess the dynamic soil-structure interaction features related a reinforced concrete building. Numerical analysis mathematical simulations were performed depending on ABAQUS® software package achieve study goal. Structures with floor numbers ranging between one ten modelled simulated, soil characteristics explored measured in terms of base shear, ...

A new approach is proposed to evaluate the non-limit active earth pressure in c–? soil based on horizontal slices method and limit equilibrium method, which takes into account arching effect, displacement, mobilized friction angle, tension cracks, shear stress of layer. The accuracy was demonstrated by comparing experimental results other theoretical methods. comparison showed that appropriate ...

Displacement of soil particles caused by erosion influences soil condition and fertility. To date, the cesium 137 isotope ((137)Cs) technique is most commonly used for soil particle tracing. However when large areas are considered, the expensive soil sampling and analysis present an obstacle. Infrared spectral measurements would provide a solution, however the small concentrations of the isotop...

Though much research has been conducted regarding traction of tires in soft granular terrain, little empirical data exist on the motion of soil particles beneath a tire. A novel experimentation and analysis technique has been developed to enable investigation of terramechanics fundamentals in great detail. This technique, the Shear Interface Imaging Analysis Tool, provides visualization and ana...

LANDSAT-l and -2 multispectral scanner (MSS) data from six overpass dates (April 2, May 17, June 4, July 10, October 17. and December 10, 1975) showed that MSS digital data for bare soil. cloud tops. and cloud shadows followed a highly predictable linear relation (soil background line) for MSS bands 5 and 7 (r2 = 0.974). Increasing vegetation development. documented by leaf area index measureme...

in many structures, the applied lateral loads are comparable with gravity loads. these types of piles which are subject to high lateral load are usually divided into two categories including long and short piles. the general methods to estimate lateral bearing capacity of short and long piles are based on ultimate bearing capacity and allowable horizontal displacement respectively. in the prese...

The vertical and rocking impedances of a rigid foundation resting on a semi-infinite transversely isotropic medium are obtained in the frequency domain. In the present approach, the contact pressure distribution on the soil foundation-interface is approximated by a linear combination of known pressure patterns. It is shown herein that the approximate solutions of spatial displacement distributi...

River bed and bank protections should be designed regarding unsaturated soil conditions. Natural surface and pore water are not ideal incompressible fluids. Microscopic gas bubbles are dispersed in both of them. Due to the compressibility of such fluids delayed pore water reactions can be observed when external pressure changes act on such a medium. This paper deals with the results of laborato...

During an earthquake, significant damage can result due to instability of the soil in the area affected by internal seismic waves. A liquefaction-induced lateral ground displacement has been a very damaging type of ground failure during past strong earthquakes. In this study, neuro-fuzzy group method of data handling (NF-GMDH) is utilized for assessment of lateral displacement in both ground sl...