Advanced Steel Construction

Vol. 6, No. 3, pp. 852-866 (2010)


FORMATION AND CALCULATION ANALYSES OF THE CYLINDRICAL LATTICED-BUILT-UP-MEMBER-SYSTEM RETICULATED MEGA-STRUCTURE

 

Yongjun He 1, * and Xuhong Zhou 1, 2

1 Professor, College of Civil Engineering, Hunan University, Changsha, 410082, China

2 Professor, Lanzhou University, Lanzhou, 730000, China

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

 

Received: 12 April 2009; Revised: 11 November 2009; Accepted: 30 November 2009

DOI:10.18057/IJASC.2010.6.3.3

 

ABSTRACT:

An innovative super-long-span spatial structure, cylindrical latticed-built-up-member-system reticulated mega-structure with double-layer grid substructures, is present and studied in this paper. The structural configuration including formation of members of the main structure and layout of the substructures is first analyzed. And the calculation methods are studied, including the equivalent cross-sectional areas of the latticed built-up members, internal forces of the sub-members, and the optimization of the whole structure. Then the optimization analyses of the cross sections of members are carried out aiming for the minimum steel consumption of the structure. In addition, comparison on steel consumption of the reticulated mega-structure with that of the conventional reticulated structure is carried out in detail, and the reasonable span range of the cylindrical latticed-built-up-member-system reticulated mega-structure is last obtained.

 

Keywords:Reticulated mega-structure; formation method; latticed built-up member; substructure; calculation method; optimization analysis

 

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