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This space is devoted to CSiBridge. Please visit the Technical Knowledge Base for documentation on topics common to all Software.


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CSiBridge Topics
 Page Tree
root@self

Recommended publication
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  •  [1]

CSiBridge is specialized analysis and design software tailored for the engineering of bridge systems. Suspension, cable-stay, elevated-roadway, and other types of bridge systems may be modeled and designed to suit any one of a variety of purposes, including means for crossing water, linking points between shear terrain, or extending over highway infrastructure. Customized controls and features integrate across a powerful object-based modeling environment to offer an intuitive, practical, and productive computational tool for bridge engineering. Advanced modeling features and sophisticated analysis techniques account for dynamic effects, inelastic behavior, and geometric nonlinearity. Code-based templates streamline the engineering process from model definition through analysis, design optimization, and the generation of comprehensive output reports. CSiBridge is the premier software for bridge engineering.

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Modeling 
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 of 
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 Bridge 
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 Systems
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CSiBridge 
...
 implements 
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 a 
...
 parametric 
...
 object-based 
...
 modeling 
...
 approach 
...
 when 
...
 developing 
...
 analytical 
...
 bridge 
...
 systems. 
...
 This 
...
 enables 
...
 designers 
...
 to 
...
 assign 
...
 bridge 
...
 composition 
...
 as 
...
 an 
...
 assembly 
...
 of 
...
 objects 
...
 (roadway 
...
 superstructure, 
...
 substructure, 
...
 abutments, 
...
 piers, 
...
 foundation 
...
 system, 
...
 etc.) 
...
 before 
...
 the 
...
SAPFire
...
 ® 
...
 Analysis 
...
 Engine, 
...
 integral 
...
 to 
...
 Software, 
...
 automatically 
...
 transfers 
...
 the 
...
 object-based 
...
 model 
...
 into 
...
 a 
...
 mathematical 
...
finite-element
...
 model 
...
 by 
...
 meshing 
...
 the 
...
 material 
...
 domain 
...
 and 
...
 assigning 
...
 material 
...
 properties. 
...
 This 
...
 object-oriented 
...
 approach 
...
 simplifies 
...
 and 
...
 expedites 
...
 the 
...
 modeling 
...
 process, 
...
 saving 
...
 engineers 
...
 the 
...
 need 
...
 to 
...
 directly 
...
 define, 
...
 link, 
...
 constrain, 
...
 and 
...
 mesh 
...
 all 
...
 material 
...
 volumes.
...
CSiBridge 
...
 also 
...
 allows 
...
 engineers 
...
 to 
...
 import 
...
 model 
...
 data 
...
 from 
...
 Dwg/Dxf, 
...
 IGES, 
...
 CIS/2 
...
 STEP, 
...
 and 
...
 Land 
...
 XML 
...
 file 
...
 formats, 
...
 or 
...
 export 
...
 to 
...
PERFORM-3D
...
, 
...
 MS 
...
 Access, 
...
 and 
...
 CIS/2 
...
 STEP, 
...
 all 
...
 following 
...
standards.

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Loading and Analysis
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After 
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 modeling, 
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 CSiBridge 
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 provides 
...
 options 
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 for 
...
 the 
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 assignment 
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 of 
...
 load 
...
 cases 
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 and 
...
 combinations. 
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Vehicle
...
, 
...
 seismic, 
...
 and 
...
 wind 
...
 loading 
...
 are 
...
 generated 
...
 according 
...
 to 
...
 building 
...
 code 
...
 (AASHTO 
...
 LRFD, 
...
 Canadian, 
...
 etc.) 
...
 and 
...
 assigned 
...
 according 
...
 to 
...
 model 
...
 geometry. 
...
 A 
...
 series 
...
 of 
...
 templates 
...
 for 
...
 assigning 
...
 and 
...
 enveloping 
...
 load 
...
 conditions 
...
 make 
...
 CSiBridge 
...
 intuitive 
...
 and 
...
 practical.
...
After 
...
 the 
...
 original 
...
 object-based 
...
 model 
...
 has 
...
 been 
...
 translated 
...
 into 
...
 a 
...
 finite-element 
...
 model 
...
 and 
...
 subjected 
...
 to 
...
 load 
...
 cases 
...
 and 
...
 combinations, 
...
 the 
...
 analysis 
...
 process 
...
 follows 
...
 directly.
...
Analysis 
...
 capabilities 
...
 go 
...
 well 
...
 beyond 
...
 elastic 
...
 performance 
...
 into 
...
 the 
...
 assessment 
...
 of 
...
inelastic
...
 behaviors. 
...
Geometric
...
 and 
...
material 
...
 nonlinearities
...
 provide 
...
 insight 
...
 into 
...
 strength, 
...
 ductility, 
...
 and 
...
 other 
...
 performance 
...
 measures 
...
 critical 
...
 to 
...
 response 
...
 under 
...
 extreme 
...
 loading. 
...
 Static-pushover 
...
 and 
...
 dynamic 
...
 analyses 
...
 (steady-state, 
...
response-spectrum
...
, 
...
 and 
...
time
...
-history
...
) 
...
 provide 
...
 further 
...
 insight 
...
 into 
...
 earthquake 
...
 resilience. 
...
 Substructure 
...
hinging
...
 properties 
...
 are 
...
 customizable.
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Additional 
...
 analysis 
...
 features 
...
 may 
...
 account 
...
 for 
...
creep
...
 and 
...
shrinkage
...
 behavior, 
...
 post-tensioning 
...
 with 
...
 optional 
...
 automatic 
...
 cable 
...
 tensioning, 
...
staged-construction
...
 effects 
...
 inherent 
...
 to 
...
 segmental 
...
 construction, 
...
buckling
...
, 
...
 camber 
...
 and 
...
 shape 
...
 finding.
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Design and Output
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An automatic design process couples with analysis procedures to coordinate and optimize the resizing of bridge components. For reinforced-concrete systems, CSiBridge optimizes rebar sizing through a comparable procedure.
Customizable reports present analysis and design details in a variety of formats. Moment, shear, and axial response data and diagrams in 2D and 3D views, seismic-displacement capacity, demand-capacity ratio, load rating per classification, influence-surface plots for displacement, reaction, and frame, shell, solid, or link response are all options for output generation.
CSiBridge Tutorials
 Include Page
tutorials:CSiBridge tutorials pagetree
tutorials:CSiBridge tutorials pagetree
CSiBridge Test Problems
 Include Page
tp:CSiBridge test problems pagetree
tp:CSiBridge test problems pagetree
See Also
References
  • [1] – . Guidelines for Nonlinear Analysis of Bridge Structures in California. Berkeley, CA: Pacific Earthquake Engineering Research (PEER) Center.