Finite element analysis for Earthquake engineering: Structural, Soil and Rocks dynamics

FEA & CFD Based Simulation Design Analysis Virtual prototyping MultiObjective Optimization

For many non-standard structures, a proper earthquake design requires a dynamic finite element analysis. For simple assessment, a linear analysis in frequency domain may be sufficient. However, for other applications, the full nonlinear characteristics of possible failure mechanisms and interaction of the structure with ground and environment need to be considered in a nonlinear time stepping analysis. Enteknograte offers solutions for both simple linear dynamic analysis, which can be applied for the design of structures, and also full nonlinear dynamic analysis taking into account the loading history of the structure.

Types of Earthquake Analysis

Linear transient analysis with different time integration schemes
Direct frequency response analysis
Modal response analysis & Spectral response analysis
Nonlinear transient analysis with different time integration schemes
Hybrid frequency-time domain analysis
Pushover load & Pushover analysis

New structures in earthquake sensitive areas are designed to sustain earthquakes without danger of damage or collapse. But if the condition of the structure has been unidentifiably changed, eg. by damage to the structure, deterioration of materials or altered loading, then the effect on earth- quake resistance may be significantly altered.

Finite element analysis for Earthquake engineering include:

Discrete and Smeared crack models with fixed and rotating cracks
Nonlinear dynamic soil-structure interaction analysis of dock walls and associated structures to demonstrate safety under extreme seismic loading
Large scale 3D analysis of reinforced concrete water retaining structures under seismic loading. Full lift-off, sliding and SSI effects considered
Seismic design checking to Eurocode
Seismic design check of a viscous damped road bridge
Seismic analysis of a compacted mass concrete dam
Seismic response analysis of a major bridge crossing
Dynamic assessment for a cooling tower
Geomechanics of Oil & Gas Reservoirs
Stability Analysis of Mines
Monopile Foundations for Offshore Wind
Assessment of viaduct structures on a major high speed railway
High speed train resonance study for a span masonry arch structure
Dynamic stability analysis of a slender plate girder bridge
Dynamic response analysis of a long span steel bridge
Slab and wall Seismic analysis for an underground swimming pool
Dynamic SSI analysis of foundations
LNG concrete containment tank Seismic analyses