Design and Analytical Evaluation of a New Self-Centering Connection with Bolted T-Stub Devices

Table 2

PTTC specimens.

Type	Beam	Column	𝑍𝑏 (cm^3)	𝑀𝑃,𝑛 (kN⋅m)	𝛼𝑎	𝑀𝑡 (min) (kN⋅m)	𝑀𝑑 (min) (kN⋅m)	𝑑2 (cm)	𝑇0 (kN)	𝑁𝑠
S1	𝑊30×173	𝑊14×426	9946.9	3432	1.2	2265	1359	38.6	3519	30
S2	𝑊30×173	𝑊14×426	9946.9	3432	0.95	1793	1076	38.6	2786	30
S3	𝑊30×173	𝑊14×426	9946.9	3432	0.75	1416	849	38.6	2199	30
S4	𝑊36×150	𝑊14×311	9520.9	3284.7	1.2	2167	1300	45.6	2852	30
S5	𝑊36×150	𝑊14×311	9520.9	3284.7	0.95	1716	1029	45.6	2258	30
S6	𝑊36×150	𝑊14×311	9520.9	3284.7	0.75	1355	813	45.6	1783	20
S7	𝑊36×150	𝑊14×311	9520.9	3284.7	0.75	1355	813	45.6	1783	30
S8	𝑊36×170	𝑊14×370	10946.6	3776.5	1.2	2493	1496	45.9	3253	60
S9	𝑊36×170	𝑊14×370	10946.6	3776.5	0.95	1973	1184	45.9	2575	60
S10	𝑊36×170	𝑊14×370	10946.6	3776.5	0.75	1558	935	45.9	2033	60
S11	𝑊36×232	𝑊14×605	15338.3	5292	0.95	2765	1659	47.1	3522	40
S12	𝑊36×232	𝑊14×605	15338.3	5292	0.95	2765	1659	47.1	3522	50
S13	𝑊36×232	𝑊14×605	15338.3	5292	0.95	2765	1659	47.1	3522	60

𝑀_𝑃,𝑛: Plastic moment capacity of the beam section.
𝑍_𝑏: Plastic modulus.