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ZB321
Truss unit is the basic component of the bridge bearing structure. It is divided into three types: standard truss unit, high bending truss unit, and high shear truss unit. The standard truss unit is meter-shaped truss, the upper and lower chord are made of 10 groove steel, and the vertical rod and belly rod are welded by 8 groove steel group. The connection size length is 3048mm, the height is 2134mm, and the weight is 306 ㎏. The single and double joint components of the upper and lower chord of the chord, web and the key stressed components of the bridge are Q355B. The bridge assembled with the standard truss unit is the standard bridge.
The high shear unit is mainly used as the truss unit of the bridge with large shear force. In the structure, except for the vertical rod and the belly rod using 56080 rectangular hollow steel, the other components and main dimensions are the same as the standard truss, and the high shear truss unit weighs 348 ㎏.
The high shear truss unit can also be used as a bridge middle bridge joint for assembly into a special bridge. As a special bridge.
In order to ensure the interchangeability of the truss unit, the tolerance of unit connection size should be strictly controlled; to reduce bridge weight deflection, the hole on the upper chord can be processed at the positive tolerance, and the lower chord should be processed at the negative tolerance, with the deflection of 1mm.
Truss unit is the basic component of the bridge bearing structure. It is divided into three types: standard truss unit, high bending truss unit, and high shear truss unit. The standard truss unit is meter-shaped truss, the upper and lower chord are made of 10 groove steel, and the vertical rod and belly rod are welded by 8 groove steel group. The connection size length is 3048mm, the height is 2134mm, and the weight is 306 ㎏. The single and double joint components of the upper and lower chord of the chord, web and the key stressed components of the bridge are Q355B. The bridge assembled with the standard truss unit is the standard bridge.
The high shear unit is mainly used as the truss unit of the bridge with large shear force. In the structure, except for the vertical rod and the belly rod using 56080 rectangular hollow steel, the other components and main dimensions are the same as the standard truss, and the high shear truss unit weighs 348 ㎏.
The high shear truss unit can also be used as a bridge middle bridge joint for assembly into a special bridge. As a special bridge.
In order to ensure the interchangeability of the truss unit, the tolerance of unit connection size should be strictly controlled; to reduce bridge weight deflection, the hole on the upper chord can be processed at the positive tolerance, and the lower chord should be processed at the negative tolerance, with the deflection of 1mm.
