Bentley 2006 User Manual

 
 

Table  of  Contents 

 

STAAD.PRO  Technical  Reference  Manual 

 
 

 

 
1.1   Introduction 

1 - 1 

1.2   Input  Generation 

2 

1.3   Types  of  Structures 

2 

1.4   Unit  Systems 

3 

1.5   Structure  Geometry  and  Coordinate  Systems  

4 

1.5.1   Global  Coordinate  System  

4 

1.5.2   Local  Coordinate  System  

7 

1.5.3   Relationship  Between  Global  &  Local  Coordinates 

11 

1.6   Finite  Element  Information  

18 

1.6.1   Plate/Shell  Element  

18 

1.6.2   Solid  Element  

31 

1.6.3   Surface Element 

35 

1.7   Member  Properties  

37 

1.7.1   Prismatic  Properties  

39 

1.7.2   Built-In  Steel  Section  Library  

41 

1.7.3   User  Provided  Steel  Table  

42 

1.7.4   Tapered  Sections  

42 

1.7.5   Assign  Command  

42 

1.7.6   Steel Joist and Joist Girders  

43 

1.7.7   Composite Beams and Composite Decks  

47 

1.7.8   Curved Members  

48 

1.8   Member/Element  Release  

48 

1.9   Truss/Tension/Compression - Only  Members  

49 

1.10  Tension/Compression - Only  Springs  

49 

1.11  Cable  Members  

50 

 1.11.1   Linearized Cable Members  

50 

 1.11.2   Non Linear Cable & Truss Members  

53 

1.12   Member  Offsets  

54 

1.13   Material  Constants  

55 

1.14   Supports  

56 

1.15   Master/Slave  Joints  

57 

1.16   Loads  

57 

1.16.1   Joint  Load  

57 

1.16.2   Member  Load  

58 

1.16.3   Area  Load / Oneway Load / Floor Load 

60 

1.16.4   Fixed  End  Member  Load 

62 

1.16.5   Prestress  and  Poststress  Member  Load  

62 

1.16.6   Temperature/Strain  Load  

1 - 65