This paper examines the effects of monotonic and cyclic temperature changes a model energy pile (diameter=25 mm, length=264 mm) on variations in volumetric water content surrounding unsaturated sand. Water flowed away from during heating to 36°C toward cooling 5°C, causing soil drying wetting near pile, respectively. The change was time-dependent, nonlinear, slower than continued evolve after s...

Earthquake-induced soil liquefaction can cause settlement around piles, which translate to negative skin friction and the development of drag load piles. A series centrifuge model tests were performed assess liquefaction-induced downdrag understand interplay effects (1) pile embedment pile-head load, (2) excess pore pressure generation dissipation, (3) reconsolidation ground on response during ...

The impact characteristics of a single pile are the theoretical basis high-strain detection technology piles and driving. Firstly, series model experiments conducted to study penetration, axial force friction under loads different rammer falling distances. Then, dynamic load condition pile-soil slippage was established by using elastodynamic method, analytical solution obtained. results show th...

It is seen from recent earthquakes that in case of fixed-base foundation system, damped systems have proved to be longing the lifespan structure by lengthening lateral fundamental period leads higher damping comparison assumptions a system. In this study, better understand phenomenon involved soil-pile interaction finite element simulation model developed Abaqus FEA software. The numerical made...

In this study, based on the actual project in Dalian, dynamic interaction of double tunnel sand bridge pile system (SSSI) under earthquake action is studied by shaking table test, and response laws structure site are obtained, which compared with ABAQUS numerical simulation. The Kelvin constitutive model subprogram introduced into model, equivalent linear method used to deal nonlinear problems ...

A p-y curve method of pile near cohesionless soil slope under reversed lateral load is proposed. This takes into account the failure mode around and interaction between soil, derives ultimate resistance pile. Considering change original stress state due to deflection foundation, influence relative density, initial mean effective foundation on internal friction angle sand evaluated further accur...