SIESMIC AND DYNAMIC ANALYSIS
Seismic response spectrum, seismic time-history and dynamic time-history analysis
Customized response spectrums and accelerograms
Fully customizable analysis parameters
Maximal response using CQC and SRSS methods
Automated or user defined damping
Graphical display of response spectrums and accelerograms
User defined incidence angle of seismic loads and vertical components
Customized analysis and output time steps
Time refined results can be provided for selected parts of the models
Automated or custom determination of the signs of deformations provided by the maximum response methods
Additional masses can be added to the model by way of static loads
Seismic loads (spectrum or accelerogram) and dynamic loads (sinusoidal, general load functions and random load functions)
Multiple seismic and dynamic loads can be combined together in a single analysis
Base shear calibration according to the selected building code
Possibility to define several seismic loads and account for eccentricities between the center of stiffness and the center of mass
Graphical display of the center of stiffness and the center of mass and seismic forces at floors
Account for accidental eccentricities
Account for the I, F and R coefficients of the NBCC and IBC code in spectral and time-history analysis
LOADS AND LOAD COMBINATIONS
A load combination results in an algebric combination of distinct basic loads.
Each basic load is multiplied by a load factor. The resulting load combination acts on the structure to generate a specific structural response.
The load combination wizard in the program also allows creating load patterns.
The load combination wizard generates load combinations according to NBCC, UBC, ASCE 7, BOCA, Eurocode and ECC.
Loading for joints, members including concentrated, uniform, trapezoidal and thermal loads.
Pressure or concentrated floor loads with two-way, one-way and truss distribution using triangular or quadrilateral surfaces.
Pressure or concentrated loads on finite element plates.
Gravity loads in any global direction calculated by the program.
Imposed displacements at any joint. User defined load combinations.
COMPREHENSIVE STRUCTURAL ANALYSIS OPTIONS
*Requires the advanced analysis package.
SPATIAL OBJECTS AND SPATIAL LOADS
Spatial objects are used to model non-structural secondary elements attached to the structure. These elements add no stiffness to the existing model. Loads applied to spatial objects are transferred to the structure through one or more attach joints. The loads are transferred using a “rigid plate” approach.
Concentrated, pressure and wind loads may be applied to spatial objects. The figures below shows a spatial object loaded vertically and horizontally attached to a cantilever column. Also, it shows the deformations and biaxial moments induced by the loads transferred by the spatial object.
CATENARY CABLES
A cable has no bending, shear, compression or torsion stiffness. Due to this fact, the fixities at the ends are ignored; the cable is always treated as member acting in tension only. In the interface of the GSE, the user can create a catenary cable by associating a cable type section to a member.
DIRECT ANALYSIS METHOD
Direct Analysis Method (DAM) available for AISC 360-16 and AISC 360-10 standards. The options for the Stability Design Method are Direct Analysis Method (DAM) and Effective Length Method (kL).
TORSION AND WARPING
The GSE software considers restrained warping for the torsion of thin-wall open sections. Notice that this phenomenon is not included in most commonly used frame analysis programs. Almost all frame programs in practice use St-Venant torsion theory ignoring the effects of restrained warping.
