|Table of Contents|

Seismic Behavior Analysis of Space Frame with Force-transforming Plates Outside Rectangular Steel Tubular Space Column Frame Joint(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年05期
Page:
97-105
Research Field:
Publishing date:

Info

Title:
Seismic Behavior Analysis of Space Frame with Force-transforming Plates Outside Rectangular Steel Tubular Space Column Frame Joint
Author(s):
GUO Jun-yu1; 2;  XU Zhong-gen1; 3;  ZHOU Miao-qian4
(1. School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China; 2. China Southern Airlines, Guangzhou 510405, Guangdong, China; 3. Guangdong Engineering Research Center for Complicated Steel Construction, Guangzhou University, Guangzhou 510006, Guangdong, China; 4. Yangmao Expansion Management Office, Guangdong Freeway Co., Ltd., Yangjiang 529900, Guangdong, China)
Keywords:
force-transforming plate;  space frame;  bearing capacity;  hysteretic behavior;  seismic behavior
PACS:
TU375
DOI:
-
Abstract:
The finite element simulation of seismic behavior of a new rectangular steel tubular column space frame joint with force-transforming plates outside was carried out using ANSYS. The skeleton curves, energy dissipation capacity, ductility, bearing capacity, failure modes, stiffness degradation curves and stress distribution of ordinary space frame and middle column node adding force-transforming plates outside with two adjacent beams of equal or unequal height were compared and analyzed. The results show that the bearing capacity of steel frame with force-transforming plates outside is improved to a certain extent under the action of low cyclic loading. The failure location is transferred from the original beam-to-column connection to force-transforming plates and other parts connected with beam flange, which effectively let plastic hinge move outside. The hysteretic curve of space frame with force-transforming plates outside is full, and the frame has strong energy dissipation capability. Compared with the traditional space frame, the new frame has larger initial stiffness, slower degradation of stiffness and strength, and improved ductility to a certain extent. The stress distribution of panel zones of beam-column joints can be improved by adding force-transforming plates outside. The stress distribution of the beam-column joint is more uniform and the stress peak position moves outward. The premature failure can be effectively avoided when the stress at the root weld of beam-column connections develops too fast, and the seismic behavior of space frame can be improved.

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Last Update: 2019-09-29