Probability Analysis of Crane Load and Load Combination Actions

Table 1

Crane load probability model and statistical parameters.

	Working level		The arbitrary point-in-time value distribution				The maximum value distribution ()
			statistical results [4]		model parameters		Moments		model parameters
			THE VERTICAL LOAD	Light A1-A3	2	0.520	0.055	23.318	0.495	0.559	0.055	23.318	0.535
3	0.460	0.071			18.063	0.428	0.511	0.071	18.063	0.479
5	0.370	0.069			18.587	0.339	0.419	0.069	18.587	0.388
Medium A4-A5	5	0.610		0.037	34.662	0.593	0.636	0.037	34.662	0.620
	10	0.520		0.045	28.500	0.500	0.552	0.045	28.500	0.532
	15/3	0.490		0.050	25.650	0.467	0.526	0.050	25.650	0.503
	20/5	0.420		0.041	31.280	0.402	0.449	0.041	31.280	0.431
Heavy A6-A7	5	0.640		0.071	18.063	0.608	0.691	0.071	18.063	0.659
	10	0.490		0.069	18.587	0.459	0.539	0.069	18.587	0.508
	15/3	0.500		0.056	22.902	0.475	0.540	0.056	22.902	0.515
	30/5	0.460		0.065	19.731	0.431	0.506	0.065	19.731	0.477
	50/10	0.380		0.050	25.650	0.357	0.416	0.050	25.650	0.393
THE HORIZONTAL FORCES
		5	0.079	0.028	45.804	0.066	0.099	0.028	45.804	0.086
		10	0.053	0.016	80.156	0.046	0.064	0.016	80.156	0.057
		20	0.046	0.014	91.607	0.040	0.056	0.014	91.607	0.050
		30	0.043	0.011	116.591	0.038	0.051	0.011	116.591	0.046
		75	0.038	0.013	98.654	0.032	0.047	0.013	98.654	0.041

Note. The actual statistical results for vertical load and transverse horizontal force should be multiplied by and , respectively. The crane nominal hoist load is represented by . The horizontal forces here refer to the total forces on the two sides of the crane bridge.