TY - GEN
T1 - Elastic buckling load of continuous braced h-shaped beams with fork restraint
AU - Sato, Yui
AU - Kimura, Yoshihiro
N1 - Funding Information:
This work was supported by JST Program on Open Innovation Platform with Enterprises, Research Institute and Academia.
Publisher Copyright:
© Springer Nature Singapore Pte Ltd 2020.
PY - 2020
Y1 - 2020
N2 - In Japan, most of H-shaped beams are rigidly connected to the box sectional columns which have high torsional rigidity, and the boundary condition is corresponding to warping fixed support. Our previous papers clarified that the lateral buckling load of beams with the warping restraint becomes higher than that with pinned support. Furthermore, it was shown that the continuous braces such as roof purlins or concrete slabs connected to the beams also prevent the lateral buckling deformation. This paper evaluates the restraint effect of continuous braces on the lateral buckling load for H-shaped beams with fork restraint under the uniform flexural moment. The lateral buckling load of beams with warping and fully fixed supports is estimated by formulating energy conservation equations. Next, this paper derives the equations of elastic lateral buckling load of beams with fork restraint, which is corresponding to the rotational restraint between warping and fully fixed supports by torsional resistance of column. By comparing the equations with the numerical analyses results, the restraint effect of the continuous braces and column on the lateral buckling is verified. It is shown that the lateral buckling stress becomes higher, as the rigidity of the continuous braces or fork restraint increases.
AB - In Japan, most of H-shaped beams are rigidly connected to the box sectional columns which have high torsional rigidity, and the boundary condition is corresponding to warping fixed support. Our previous papers clarified that the lateral buckling load of beams with the warping restraint becomes higher than that with pinned support. Furthermore, it was shown that the continuous braces such as roof purlins or concrete slabs connected to the beams also prevent the lateral buckling deformation. This paper evaluates the restraint effect of continuous braces on the lateral buckling load for H-shaped beams with fork restraint under the uniform flexural moment. The lateral buckling load of beams with warping and fully fixed supports is estimated by formulating energy conservation equations. Next, this paper derives the equations of elastic lateral buckling load of beams with fork restraint, which is corresponding to the rotational restraint between warping and fully fixed supports by torsional resistance of column. By comparing the equations with the numerical analyses results, the restraint effect of the continuous braces and column on the lateral buckling is verified. It is shown that the lateral buckling stress becomes higher, as the rigidity of the continuous braces or fork restraint increases.
KW - Continuous braces
KW - Fork restraint
KW - Lateral bucking load
KW - Uniform flexural moment
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U2 - 10.1007/978-981-15-5144-4_22
DO - 10.1007/978-981-15-5144-4_22
M3 - Conference contribution
AN - SCOPUS:85089316863
SN - 9789811551437
T3 - Lecture Notes in Civil Engineering
SP - 269
EP - 277
BT - ICSCEA 2019 - Proceedings of the International Conference on Sustainable Civil Engineering and Architecture
A2 - Reddy, J.N.
A2 - Wang, Chien Ming
A2 - Luong, Van Hai
A2 - Le, Anh Tuan
PB - Springer
T2 - International Conference on Sustainable Civil Engineering and Architecture, ICSCEA 2019
Y2 - 24 October 2019 through 26 October 2019
ER -
