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Research and optimization on laminated steel tube column-concrete beam joints with outer stiffening ring

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Abstract

In practical design, the joints with outer stiffening ring were used to connect concrete beams and laminated steel tube columns. The seismic behavior of joints with outer stiffening ring with various types was studied based on experiments. The bearing capacity, rigidity, ductility, energy dissipation capacity, deformation property and strain distribution of the joints with outer stiffening ring with various types were comprehensively evaluated based on the test results of three specimens under quasi-static cyclic loading and finite element analysis. The test results showed that the failure mode, hysteretic behavior, bearing capacity and rigidity degradation of the joints with outer stiffening ring with various types were nearly identical. Furthermore, the strain distribution of the outer stiffening ring of the three joints was nearly the same. The detailing recommendation for the outer strengthening rings was proposed for the concrete beam-laminated steel tube column joints with outer stiffening ring, in order to ensure the good seismic capacity of the joints.

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Authors and Affiliations

  1. Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Deparment of Civil Engineering, Tsinghua University, Beijing, 100084, China

    JianGuo Nie, YuHang Wang & MuXuan Tao

Authors
  1. JianGuo Nie
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  2. YuHang Wang
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  3. MuXuan Tao
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Correspondence to YuHang Wang.

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Nie, J., Wang, Y. & Tao, M. Research and optimization on laminated steel tube column-concrete beam joints with outer stiffening ring. Sci. China Technol. Sci. 56, 1282–1293 (2013). https://doi.org/10.1007/s11431-013-5166-9

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  • DOI: https://doi.org/10.1007/s11431-013-5166-9

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