Review of Design Flexural Strengths of Steel–Concrete Composite Beams for Building Structures

International Journal of Concrete Structures and Materials

Table 7 Design results calculated from SCM: exterior beams under positive bending.

f _ck (MPa)	F _yk (MPa)	KSSC–KCI				Eurocode 4				JSCE 2009
f _ck (MPa)	F _yk (MPa)	M ⁽¹⁾_k	M ⁽¹⁾_d	ϕ	μ _d	M ⁽¹⁾_k	M ⁽¹⁾_d	ϕ	μ _d	M ⁽¹⁾_k	M ⁽¹⁾_d	ϕ	μ _d
21	235	1109	1020	0.919	4.37	1110	1024	0.922	4.38	1145	986	0.861	4.73
	315	1392	1271	0.913	2.79	1394	1281	0.918	2.96	1405	1208	0.859	3.08
	355	1519	1377	0.906	2.31	1524	1393	0.914	2.52	1524	1309	0.858	2.59
	450	1782	1581	0.887	1.67	1782	1604	0.900	1.76	1769	1506	0.851	1.86
	650	2078	1789	0.860	1.00⁽²⁾	2134	1821	0.853	1.00⁽²⁾	2099	1703	0.811	1.00⁽²⁾
30	235	1198	1092	0.911	5.51	1201	1098	0.914	5.86	1252	1065	0.850	6.18
	315	1506	1369	0.909	3.54	1506	1379	0.915	3.55	1525	1305	0.855	3.86
	355	1650	1493	0.904	2.93	1651	1507	0.912	2.93	1657	1419	0.856	3.15
	450	1960	1743	0.889	2.04	1964	1763	0.897	2.04	1938	1640	0.846	2.20
	650	2402	2032	0.846	1.00⁽²⁾	2434	2107	0.865	1.00⁽²⁾	2341	1953	0.834	1.00⁽²⁾

⁽¹⁾ M _k and M _d are the moment strengths for characteristic and design strengths of materials, respectively (Unit: kN m).
⁽²⁾Crushing failure of the extreme fiber of concrete slab occurs before the tensile yielding of bottom flanges.