题目内容

A steel structure workshop (without crane and internal mezzanine floor) is designed with a span of 30 m, and there is little difference between eaves height and mid-span height, so it is most suitable for use the ( ).

A. Pitched roof symmetric portal frame
B. Propped portal frame
C. Tied portal frame
D. Mono-pitch portal frame
E. Mansard portal frame

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Which of the following structural members belongs to the primary steelwork of portal frame buildings. ( ) (There are more than one correct choice)

A. columns
B. rafters
C. side rails
D. purlins
E. wall cladding
F. roof cladding
G. bracing

Which of the following structural members belongs to the secondary steelwork of portal frame buildings. ( ) (There are more than one correct choice)

A. columns
B. rafters
C. side rails
D. purlins
E. wall cladding
F. roof cladding
G. bracing

Portal frames resist horizontal and vertical loads mainly by( ).(There is not less than one correct choice)

A. rigidity of connection
B. bending stiffness of columns
C. bending stiffness of rafters
D. bending stiffness of haunch

In the literature search, which set of keywords can quickly retrieve the reference literature on the design theory of light-steel structure factory?

A. steel structure factory, design theory
B. factory, design theory
C. portal frame, concrete
D. factory, design

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