BUCKLING-RESTRAINED BRACE OUT-OF-PLANE STABILITY DESIGN METHOD CONSIDERING BIDIRECTIONAL SEISMIC ACTION
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Oct 24, 2024
app pub date -
Jun 30, 2024
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Jun 30, 2024
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Abstract
The present invention provides a buckling-restrained brace out-of-plane stability design method considering a bidirectional seismic action. The method includes the following steps: determining geometric dimensions of a buckling-restrained brace and a gusset plate and a target out-of-plane displacement angle; calculating resistance parameters and stiffness parameters, the resistance parameters including a yield axial force of the gusset plate, and the stiffness parameters including rotational stiffness of the gusset plate, an ultimate bending moment of the gusset plate, and flexural stiffness of connecting segments of the buckling-restrained brace; and calculating an out-of-plane elastic buckling critical force of the buckling-restrained brace; calculating a trigger eccentricity, checking whether out-of-plane stability of the brace is met, if the out-of-plane stability of the brace is met, determining that a designed buckling-restrained brace damping system is capable of ensuring the out-of-plane stability under the bidirectional seismic action.
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