Ant Colony Optimization Analysis on Overall Stability of High Arch Dam Basis of Field Monitoring

Table 6

Characteristic value of dam stresses under analysis case  2.

Position	Stress type	Design (MPa)	Generalized least squares (MPa)	D-ACO (MPa)
Upstream surface	Maximum tensile stress	1.24 (left side)	1.35 (left dam abutment)	2.56 (left side)
	Maximum compressive stress	−3.6 (EL 2100 m)	−3.67 (EL 2100 m)	−3.33 (EL 2093 m)
Downstream surface	Maximum tensile stress	0.61 (EL 2150 m)	0.69 (EL2141 m)	0.7 (EL 2151 m)
	Maximum compressive stress	−7.52 (EL 2060 m)	−7.73 (EL 2060 m)	−8.12 (EL 2060 m)
Interface	Maximum tensile stress	0.61 (dam heel)	0.38 (dam heal)	—
	Maximum compressive stress	−1.87 (EL 2030 m)	−1.88 (EL 2030 m)	—