In this study, the behavior of screw piles models with continuous helix was studied by conducting laboratory experimental tests on a single pile that has several aspect ratios (L/D) under influence static axial compression loads. The were inserted in soft soil unit weight 18.72 kN/m3 and moisture content 30.19%. Also, liquid limit 55% plasticity index 32%. A physical model designed to investiga...

In theory, the balance point position of O-cell pile test is determined and unique, load box should be located at this point. But in practical projects, it difficult to determine accurately. The foundation Qilu Yellow River Approach Bridge bears a large load. order reduce risk caused by test, double technology adopted project. According design, soil properties loading sequence, bearing capacity...

Severe foundation scour may occur around monopile foundations of offshore wind turbines due to currents and waves. The so-called p-y curves method is suggested in the existing design recommendations to determine the behavior of monopiles unprotected against scour and the reduction of effective soil stress is accounted for by the extreme scour depth. This conservative design approach does not co...

Simple methods of analysis are developed for computing the dynamic steady-state axial response of floating pile groups embedded in homogeneous and non-homogeneous soil deposits. Physically-motivated approximations are introduced to account for the interaction between two individual piles. It is found that such an interaction arises chiefly from the ‘interference’ of wave fields originating alon...

In evaluating ultimate limit states for design, time-domain aeroelastic response simulations are typically carried out to establish extreme loads on offshore wind turbines. Accurate load prediction depends on proper modeling of the wind turbulence and the wave stochastic processes as well as of the turbine, the support structure, and the foundation. One method for modeling the support structure...

The article presents the ability of technical condition buildings and structures energy facilities in areas with unstable soil a high level groundwater. A method for determining falling hammer when pile is immersed ground, height speed fall impact part hammer, as well constant (J/kg) α (J/s), on which all calculations are based, considered. Calculations testing driven piles given. static load. ...

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...