Earthquake Impact Analysis Software

Earthquake-resistant structural analysis software

Earthquake-resistant construction is an essential requirement in many regions of the world that are prone to high levels of seismic activity. Structures in these areas need to be able to withstand the sudden ground shaking that is characteristic of earthquakes, thereby minimizing structural damage and human deaths and injuries. Suitable construction methods are required to ensure that proper design objectives for earthquake-resistance are met. However, construction methods and ground conditions vary dramatically in different regions, which means that structural engineers need to be able to analyse, test and adapt their designs based on the local geo-technical conditions.

FORUM8's earthquake impact analysis software provides structural engineers with a suite of advanced analysis tools capable of simulating the effect of seismic activity on large-scale structures prior to construction . Using the latest research and advanced analysis techniques engineers are able to design earthquake resistant structures based on the actual geo-technical ground conditions that satisfy the international and regional building regulations.

 

 

Engineer’s Studio® – FEM 3D material and geometrical nonlinear analysis software

A modular software system, Engineer’s Studio® is used to define structures, materials, and loads for planar and spatial structural systems consisting of plates, walls, shells and members to create combined structures as well as model solid and contact elements.
Offering a broad range of plugin modules, the software enables structural engineers to select the program package that best meets their project requirements and specialist areas of interest and research.

  • Supports static, dynamic and eigenvalue analysis /influence line (single bar)

  • Supports material nonlinearity / geometric non-linearity (large displacement) / composite nonlinearity considering both material nonlinearity and geometric nonlinearity at the same time

  • Supports infinitesimal displacement / large displacement / elastic foundation beam theory / Euler-Bernoulli beam theory / Timoshenko beam theory (considering shear deformation) / Reissner-Mindlin theory

  • Supports elastic beam element / rigid element / spring element / M-φ element / fiber element / plate element (laminated plate)/ cable element / damping element (velocity-exponentiation type of cohesive damper)

  • Supports locking condition: six degree of freedom for the nodal point (free or fixed or spring) / distributed spring for elastoplastic beam element(two way of axial
    member direction and axial member)/ coupling spring (define at node)

  • concrete / reinforcement bar / prestressed steel (line and steel bar rather than steel) / steel plate / carbon fiber sheet / aramid fiber / elastic material(by input any young module) / non-structural material(considering only weight per unit volume)

  • The following loads can be applied against frame elements: nodal load / material load (concentrated / distributed / projection) / thermal load / forced load
    The following loads can be applied to plate element: Plate surface load (distributed load) / Plate volume force (acting force proportional to mass)
    Plate Ground response displacement (Applicable to cylindrical water tank. Ground response displacement is applied as load)
    Plate dynamic water pressure (Applicable to cylindrical water tank. Housner approximate method) / The following loads can be applied against cable element: Distributed load (Load to be distributed throughout the entire length of cable) / Temperature load

  • Dead load / prestressed load / horizontal seismic coefficient load

  • Monotone increasing / cyclic (constant, increasing) / reversible cyclic
    (constant, increasing)

  • Acceleration wave (individual or simultaneous input of two components, vertical and horizontal) direct integration method by the Newmark-β method(β=1/4)

  • Stiffness proportional pattern by element / Rayleigh damping / Rayleigh
    damping by element / (initial stiffness, instantaneous stiffness)

  • Consistent mass matrix / lumped mass matrix

(GEO FEAS) 3D -Geotechnical Finite Element Elastoplastic Analysis Software

(GeoFEAS) 3D is 3D software allows for stress-deformation analysis of soil under static conditions. GeoFEAS2D is designed for 2D geotechnical analysis (including axial symmetric analysis) and is being used widely in areas of high seismic activity.

Developed jointly by FORUM8 and Ukai laboratory the software utilizes the ground analysis program developed by Ukai laboratory, Department of Civil and Environmental Engineering of Gunma University together with FORUM8's in-house developed Pre-Post processor.

  • 3D analysis is an essential requirement to analyse the tunnel-boring progress along each construction stage including tunnel-boring and lining when you want to assess the effect in pile foundation.

    In the urban area, many of civil engineering structures are crossed sterically and it allows the expression of more realistic terrain, the geological conditions, and the structure association by modeling in 3D.The mesh creation function is also improved so that user can create the selected mesh including tetrahedron easily.

     

  • The coordinate and elevation data of terrain surface and layer boundary created in terrain data file format, LandXML now can be imported. This function allows automatic construction without inputting complex terrain information manually.
    The structure object can be modeled based on the terrain information. The same terrain information can be shared via our landscaping simulation software VR Design Studio and files. The finite element analysis of deformation and stability is judged by GeoFEAS3D ergonomically. Objects analyzed by GeoFEAS3D are simulated in the site terrain to enable the visualization of the new building or the terrain using VR Design Studio.

  • Geotechnical analysis is required to model ground deformation behavior precisely by inputting the detailed data, and evaluation based on advanced techniques such as The linear elastoplastic model(the simplest), Mohr-Coulomb’s model(traditional), elastoplastic model(general), PZ-Sand(Pastor- Zienkiewicz).
    “Element test simulation program” that accompanies our geotechnical analysis series GeoFEAS2D, UWLC starts to be included in Version 2. When many parameters such as PZ-sand need to be decided, you can consider the soil structure model in detail many times by element test simulation.

UWLC - Dynamic effective ground stress analysis software

UWLC can analyse the dynamic effective stress by using finite element method (FEM) to assess ground surface response to earthquake, mutual dynamic action between structures and ground, and sandy soil liquefaction. By using elasto-plasticity and non-linear models for soil structure models, ground transformation in the large earthquake can be calculated.

In this version, the parameter-determining function has been improved. In addition to the originally attached elemental test simulation with the function to decide liquefaction parameters, an identification analysis by optimization method has been added as the attached program. A function to estimate sand parameters from standard penetration test value also has been added to the material parameter setting of main program.

  • Set parameters in liquefaction by carrying out simulation for element test.
    Identification analysis program by the optimization method is attached so that entered parameter can be set from experiment data.
    Parameters of sand structure model (PZ-sand) can be estimated from N value of the standard penetration test
    It conducts one-dimensional and two-dimensional analyses.
    It is possible to carry out the dynamic analysis of total stress method and of effective analysis (analysis in liquefaction).
    Applied elements for total stress method (ignoring water pressure) and applied elements for effective stress method (considering water pressure) can be used in mixed situations.
    Dynamic analysis of earth and water successively formed on the assumption of water penetration.
    Plenty of structure models of land (eight categories) are available and these can be used freely.
    It adopts BFGS, which is a line search for calculating convergence.
    Stable analysis by making automatic adjustment in time steps of dynamic analysis.

  • This program is mainly applied to the following investigations.
    Investigation of the dynamic interrelation between land and building structures by using the total stress method.
    Investigation of stability at an earthquake including earth structures(river banks, for example).
    Investigation of the lift of structures in the liquid land.
    Investigation of the method against.
    Dissipation of Excess Pore Water Pressure Method like Gravel drain method are supported.
    Simulation of experiments such as a centrifugal vibration experiment or a large-sized vibration table.
    Judgment of minute liquefaction by means of one-dimensional response analysis during earthquakes.

  • Method by structures
    Consolidation method
    Sand compaction pile method
    Gravel drain method

Case Study

Universidad de Granada
Leading Spanish University Invests in ‘Engineer’s Studio’ Earthquake Analysis Software from FORUM8

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