Structural Performance of a New Blind-Bolted Frame Modular Beam-Column Connection under Lateral Loading

Structural Performance of a New Blind-Bolted Frame Modular Beam-Column Connection under Lateral Loading

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This study proposes an effective steel frame modular system and evaluates the structural performance of its beam-column Sunglasses connection through experimental and analytical work.The new steel frame modular system utilizes the blind bolts, which allow free access to the structural members of the closed cross-section.In addition, the new modular system is designed such that the strength of its beam members is considerably lower than that of its column members to implement the strong column-weak beam concept.In order to investigate the effectiveness of the proposed modular beam-column connection, two types of specimens were designed and tested.One of the two specimens has four knee brace members to increase the bending stiffness of the connection, T-Shirts while the other does not have these components.

The applied load versus displacement curves are plotted for the two specimens, and their failure modes are identified.Finally, a simplified analytical model for the modular beam-column connection is proposed, and its effectiveness is validated by performing its push-over analysis and comparing its results with the test results.