FEA of Effects Induced by Diurnal Temperature Variation on Downstream Surface of Xiaowan Arch Dam

Table 4

Z-direction stress of two representative points at typical moments.

	Time (h)	External air temperature (°C)	P1 σz (MPa)	P2 σz (MPa)
Winter	20	6.6	2.35	2.20
	44	6.9	2.40	2.30
	68	8.1	2.20	1.90
	92	8.2	2.20	1.90
Summer	43	17.4	1.30	0.95
	67	16.1	1.40	0.90
	91	16.4	1.30	0.75