Analysis and Experimental Study on Bearing Capacity of “All-Inclusive” Underpinning Joint

Table 4

Bearing capacity and failure modes of specimens.

Specimens	(kN)	(kN)	(mm)	(mm)	(mm)		Failure modes
ZT-1	1480	2750	0.1	2.2	16.9	7.7	Flexure-shear
Manuscript [5]	1065	1825	0.3	3.4	13.5	4.0	Flexure-shear
Manuscript [12]	125	775	0.4	2.0	6.3	3.15	Flexure-shear

is the initial slip load; is the ultimate load; is the relative slip displacement of the new-to-old concrete interface; is the slip displacement of initial slip load; is the ultimate displacement of ultimate load; and is the ductility ratio.