|Table of Contents|

Comparative Analysis of Torsional Capacity for Reinforced Concrete Members(PDF)

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

Issue:
2010年04期
Page:
57-68
Research Field:
Publishing date:
2010-12-20

Info

Title:
Comparative Analysis of Torsional Capacity for Reinforced Concrete Members
Author(s):
TIAN Lei1; 2;  GONG Jin-xin1;  WEI Wei-wei1
1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. China Communications Water Transportation Planning and Design Institute Co.Ltd, Beijing 100007, China
Keywords:
reinforced concrete member;  torsional capacity;  torque;  reliability analysis
PACS:
TU375.1
DOI:
-
Abstract:
For reinforced concrete pure torsion member, torsional capacity and minimum reinforcement ratio based on GB 50010—2002, ACI 318-08 and EN 1992-1-1:2004 were compared and analyzed, then reliability analysis was performed based on a lot of experimental data about torsional capacity of reinforced concrete members from different sources. Finally, the calculation methods of reinforcement, minimum reinforcement ratio and section restraint condition of reinforced concrete members under the combined action of bending moment, shear force and torque were compared and analyzed. Results show that for pure torsion member, torsional capacity in GB 50010—2002 is composed of torques carried by reinforcementsand concretes, but only torque carried by reinforcements is considered by ACI 318-08 and EN 1992-1-1:2004. For minimum stirrup ratio of pure torsion member, ACI 318-08 is larger than EN 1992-1-1:2004, and GB 50010—2002 is the smallest. For reliability indexes of pure torsion member in torsion, under combined dead load and live load, GB 50010—2002 is larger than EN 1992-1-1:2004, and ACI 318-08 is the smallest, whereas the three codes are almost the same under combined dead load and wind load. For the reinforced concrete member subjected to combined action of bending moment, shear force and torque, ACI 318-08 and EN 1992-1-1:2004 are relatively conservative compared with GB 50010—2002 for torsion design method. The shape of interaction curve under shear and torsion for three codes are all close to quadrant of a circle. Under combined action of shear force and torque, minimum stirrup ratios of GB 50010—2002 and EN 1992-1-1:2004 are approximate, and greater than ACI 318-08.

References:

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Last Update: 2010-12-20