Tower crane, rod piece assembled type standard knot and rod piece used for assembled type standard knot

The utility model discloses a rod piece assembled type standard knot comprising four main chord members arranged squarely. At least one straight web member and at least four inclined web members are arranged between every two adjacent main chord members in the four main chord members; at least one inclined support rod is arranged between at least one pair of main chord members in the two pairs of main chord members arranged oppositely; each main chord member is welded with a plurality of ear plates; and the straight web members, the inclined web members and the inclined support rod are connected to the corresponding ear plates by pin shafts. In the utility model, the standard knot is designed by adopting a rod piece assembled type structure, the commonly used whole type structural design and piece type structural design are changed, interchangeability among the rod pieces is improved, so that the rod piece assembled type standard knot has the advantages of reinforcing the rigidity of structure members, being simple and reliable in installation, reducing the whole weight, being convenient for being disassembled into rod pieces for transportation, and convenient for using containers for transportation so as to improve the anti-corrosion capacity in the long-distance transportation and ocean transportation.