Steel and Composite Structures

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Research on rotation capacity of the new precast concrete assemble beam-column joints

  • Han, Chun (College of Civil Engineering and Architecture, Xinxiang University) ;
  • Li, Qingning (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Wang, Xin (United Architecture Design Group Shanghai) ;
  • Jiang, Weishan (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Li, Wei (College of Civil Engineering and Architecture, Wenzhou University)
  • Received : 2015.12.19
  • Accepted : 2016.10.18
  • Published : 2016.10.30
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Abstract

The joints of the new prefabricated concrete assemble beam-column joints are put together by the hybrid joints of inserting steel under post-tensioned and non-prestressed force and both beams and columns adopt prefabricated components. The low cyclic loading test has been performed on seven test specimens of beam-column joints. Based on the experimental result, the rotation capacity of the joints is studied and the $M-{\theta}$ relation curve is obtained. According to Eurocode 3: Design of steel structures and based on the initial rotational stiffness, the joints are divided into three types; by equivalent bending-resistant stiffness to the precast beam, the equivalent modulus of elasticity $E_e$ is elicited with the superposition method; the beam length is figured out that satisfies the rigid joints and after meeting the requirements of application and safety, the new prefabricated concrete assemble beam-column joints can be regarded as the rigid joints; the design formula adopted by the standard of concrete joint classification is theoretically derived, thereby providing a theoretical basis for the new prefabricated concrete structure.

Keywords

Acknowledgement

Supported by : Zhejiang Provincial Natural Science Foundation of China, National Natural Science Foundation of China

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