Optimization of Railway Mixed Goods Loading Layout considering Stability

Algorithm 2

Simple block construction algorithm (Taking heavy goods set as an example).

	Input heavy goods set , the maximum number of blocks generated ;
	Output simple block set 。
(1)	Initialize
(2)	for goods in each category
(3)
(4)	for all permissible ways of placing each class of goods
(5)	for to //arrange the goods times along the axis, where is the quantity of each type of goods
(6)	for to //rearrange the goods times along the axis
(7)	for to //rearrange the goods times along the axis
(8)	if
(9)	Generate block //the sizes are , including , pieces of class goods
(10)	Put into set
(11)	// is the number of simple goods blocks in each set , is the total number of blocks eventually generated
(12)	if
(13)	for goods in each category
(14)
(15)	Select the top blocks in each category of goods block set and put them into set
(16)	else put all the blocks in set into set
(17)	return