Bending Performance of Prestressed Continuous Glulam Beams

Table 4

Failure modes of simply supported beams and continuous beams.

Beam no.	Number of steel bars	Reinforcement ratio (%)	Prestressing force (kN)	Failure mode^a
LA1(1)	2	1.92	0	IL, IIR
LA1(2)				IIL, IIR
LA2(1)	4	3.84		IIIL, IIR
LA2(2)				IIIL, IR
LA3(1)	6	5.76		IL, IIR
LA3(2)				IL, IIR
LA4(1)	2	1.92	7	IIL, IIR
LA4(2)				IIL, IIR
LA5(1)	4	3.84		IIIL, IIIR
LA5(2)				IIIL, IR
LA6(1)	6	5.76		IVL, IIR
LA6(2)				IIL, IIR
LA7(1)	2	1.92	14	IL, IIR
LA7(2)				IL, IIR
LA8(1)	4	3.84		IVL, IIR
LA8(2)				IVL, IIR
LA9(1)	6	5.76		IIIL, IR
LA9(2)				IVL, IIR
LB1	4	3.84	7	II
LB2				II

^aFailure mode I is the compressive failure; failure mode II is the tensile failure; failure mode III is the buckling failure; failure mode IV is no failure; the subscript shows the left or the right span; for example, I_L means the left span has the compressive failure.