نتایج جستجو برای: foundation stiffness
تعداد نتایج: 134117 فیلتر نتایج به سال:
Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling
Numerical modelling can simulate the interaction between structural elements and soil continuum in a piled-raft foundation. The present work utilized two-dimensional finite element Plaxis 2D software to investigate settlement, swelling, behavior of foundations during settlement swelling on various profiles under load combinations geometry conditions. field laboratory testing have been performed...
ABSTRACT: The problem of lateral load induced on piles under earthquake has been plaguing professional engineers, geo-technical investigators and researchers alike for quite some time. The normal practice is to ensure that the fixed base shear of column does not exceed the static shear load capacity of piles. The inertial and stiffness effect of pile is usually ignored in dynamic earthquake ana...
Monopiles are the most popular foundation for offshore wind turbines. These foundations typically have a low length to diameter ratio and undergo rigid body rotation when subjected lateral load. This paper presents results from an extensive numerical investigation involving 3D finite element analyses demonstrate that moment-rotation response of monopile in sand can be represented using single n...
Design and development of vertically-suspended water pumps requires good understanding of the rotor system characteristics with water-lubricated rubber bearings (WLRB). This paper presents a newly-built experimental device to simulate rotor systems with WLRBs, and some initial results on experimental identification of dynamic stiffness coefficients of a long WLRB. In experiments, unbalanced mas...
Based on the sand and pebble stratum in Beijing area, this paper studies interaction between deep-foundation-pit excavation for subway stations surrounding buildings using an orthogonal test. Moreover, it considers relative position relationship how foundation pit is set up as well different design schemes pits buildings. Results show that horizontal distance s building stiffness of itself have...
Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation
To optimize the design of stone columns composite foundation for liquefiable ground improvement in Tibar Bay Port Project, a 3D Finite Element (FE) analysis is implemented on earthquake response and liquefaction mitigation effect. Nine schemes are designed with orthogonal method. Taking peak acceleration excess pore pressure ratio as target indicators, influences four factors, including diamete...
Outcomes for heart failure (HF) patients remain suboptimal. No known therapy improves mortality in acute HF and HF with preserved ejection fraction; the most recent HF trial results have been negative or neutral. Improvement in surrogate markers has not necessarily translated into better outcomes. To translate breakthroughs with potential therapies into clinical benefit, a better understanding ...
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...
in this paper deflection and free vibration of sandwich panel is studied. the core of sandwich panels is made of hexagonal honeycomb and faces are made of two different materials of carbon fiber reinforced plastic and k-aryl/epoxy covering. the governing equations are deduced from the first order sheer deformation theory (fsdt) and they are solved using generalized differential quadrature metho...
The design and execution of consolidation treatment of settled foundations by means of injection of polyurethane expanding resins require a proper investigation of the state of the foundation soil, in order to better identify anomalies responsible for the instability. To monitor the injection process, a procedure has been developed, which involves, in combination with traditional geotechnical t...
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