Abstract: In order to popularize the application of extended end-plate connections, this research work, based on the theory of plastic hinge distribution and the theory of equivalent T-shaped parts, employs a theoretical method to deduce and analyze equivalent T-shaped parts connected by four bolts and eight bolts. Consequently, a series of simplified design formulas are obtained, and coefficients associated with the simplified design formulas are fitted in terms of calculated examples. The comparison of the calculated examples has demonstrated that all results calculated in terms of the simplified design method are in good agreement with the American LRFD CODE and Chinese JGJ82 CODE, and furthermore the proposed simplified design method is convenient for engineering predictions and applications. The research results may provide references for popularization and applications of the extended end-plate connections.

Key words: extended end plate connection, design method, plastic hinge distribution, equivalent T-stub, end plate thickness