A component pure torsion test device and pure torsion test method

Abstract

The invention discloses a member pure-torsion experimental device and a member pure-torsion experimental method. The member pure-torsion experimental device comprises two supports fixed to a basic grade level and a counterforce beam of which two ends are fixed to upper ends of the supports. The two ends of a member are fixed to a torsion support fixedly connected to the basic grade level. The two ends of the member are fixedly connected to a torsion arm, a distributive girder is arranged between two ends of the torsion arm, a lower end of a vertical jack is arranged at the midspan of the distributive girder and an upper end of the vertical jack contacts with a vertical support connected to the counterforce beam. In an experiment, the vertical jack applies vertical axial pressure for the midspan of the distributive girder and the ends of the distributive girder produce axial forces on the torsion arm so that member torsion is formed. The member pure-torsion experimental device is simple, can be assembled conveniently and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of building structure tests, and in particular relates to a pure torsion experimental device and method for torsion of concrete components under the action of pure torsion. Background technique [0002] Torsion is one of the basic stress forms of structural members. If the load, member and support reaction force are not in the same plane, torque will be generated on the member section. Therefore, in civil engineering structures, structures bearing torque are common, but there are not many cases where torque acts alone, and most of them are in a combined torsion state. For example, horizontal curved beams, frame edge beams, and L-shaped beams with asymmetrical sections are mostly in a composite torsion state under the joint action of bending moment, shear force, and torque. In particular, under wind loads, super high-rise building replacement girders and vertical members in irregular structures under the act...

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Problems solved by technology

[0003] At present, there are many pure torsion tests for individual components, but most of the test methods are relatively complicated, and the requirements for the experimental equipment are also very high.

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