A Study on Axial Compression Performance of Large Diameter-Thickness Ratio Concrete-Filled Gas Drainage Steel Pipe

Table 5

Comparison of measured and calculated results.

No.	Nu (kN)	Average value	Unified strength theory				Limit equilibrium theory		Superposition theory
			Zhong Shantong equation		Han Linhai equation		CECS 28:2012		AIJ-1997		EC4-2004		ACI-2005
			Nc (kN)	Nc/Nu	Nc (kN)	Nc/Nu	Nc (kN)	Nc/Nu	Nc (kN)	Nc/Nu	Nc (kN)	Nc/Nu	Nc (kN)	Nc/Nu
SSP-I-1	5386	5130	5436	1.059	5376	1.048	7635	1.488	5233	1.020	4864	0.948	4628	0.902
SSP-I-2	4836
SSP-I-3	5170
SSP-II-1	5132	5165	5436	1.052	5326	1.031	7635	1.478	5233	1.013	4864	0.941	4628	0.896
SSP-II-2	5385
SSP-II-3	4979
RSP-1	3678	3596	3798	1.056	3697	1.028	5036	1.400	3690	1.026	2893	0.804	2681	0.745
RSP-2	3651
RSP-3	3459