Study on the Effect of Extra Pole Support on Seismic Resistance for Low-Rise RC Structures

Table 2

Support schemes and the parameters of the fragility functions.

Structures		α	Cross section	Side frame 1	Middle frame	Side frame 2
Poorly designed structure (PDS)		—	—	—	—	—
Standard-designed structure (SDS)		—	—	—	—	—
Group A	A1	30°	C0	√	√	√
	A2	37°	C0	√	√	√
	A3	45°	C0	√	√	√
	A4	60°	C0	√	√	√
	A5	72°	C0	√	√	√
Group N	N1	45°	C0	√	√	—
	N2	45°	C0	√	—	√
	N3	45°	C0	—	√	—
	N4	45°	C0	√	—	—
Group S	S1	45°	C1	√	√	√
	S2	45°	C2	√	√	√
	S3	45°	C3	√	√	√
	S4	45°	C4	√	√	√

“√” indicates supported and “—” indicates no support.