Experimental Study on Buckling-Restrained Braces Using Steel Mortar Planks

Buckling mechanism of steel core of buckling-restrained braces

“…But the contact force by the conventional method [6][7][8][9][10][11][12][13] is exactly the same as the result shown in Eq. (10). (Note that a typing error in the expression of the contact force in [6][7][8][9] entailed the contact force only half of what it should be, while it was corrected in [16].)…”

“…(8). But the contact force by the conventional method [6][7][8][9][10][11][12][13] is exactly the same as the result shown in Eq. (10).…”

“…From Eq. (35), we may find that the maximum contact force N 3 is 3/4 times that obtained by using the conventional method [6][7][8][9][10][11][12][13].…”

“…(Note that a typing error in the expression of the contact force in [6][7][8][9] entailed the contact force only half of what it should be, while it was corrected in [16].) However, the bending moment of the restraining member cannot be obtained from the conventional method [6][7][8][9][10][11][12][13], because the vertical contact forces acting on the restraining member cannot satisfy the force equilibrium by the conventional method.…”

“…Takeuchi et al [6][7][8][9][10] proposed a method to calculate buckling wave length using tangent modulus after yielding of the core, and then obtain the contact force according to the force equilibrium. Some experiments indicated that the buckling wave length calculated using the reduced or equivalent modulus, rather than the tangent modulus, agreed with the test results [11][12][13].…”