4. The design basis of Bridge Launching Crane

The bridge girder launcher is designed according to the newest standards and rules in China which are following:
● 《Crane Design Standard》（GB/T 3811）
● 《The technical condition for Beijing-Shanghai passenger dedicated line 》
● 《General Gantry Crane》(GB/T14406)
● 《Code for Design of Steel Structures》（GB 50017）
● 《Code for Construction and Acceptance of Steel Structure》（GB 50205）
● 《The key Purpose of Steel Wire Rope》(GB 8918)
● 《The code of construction and acceptance for Electric equipment installation engineering》( GB50256)
● 《General Technical Conditions of Hydraulic System》 (GB 3766)
● 《Safety technical specification for construction of Railway Engineering(Volume one) 》（TB10401.1）
● 《Mechanical Properties of Fasteners Bolts, Screws and Studs》（GB 3098.1）

5. The video of Bridge Launching Crane

6. Main design requirements of Bridge Launching Crane

● Lifting height: 56m
● the lifting tools of trolley: 360°
● Adaptive longitudinal slope: 2%, transverse slope: 2%
● adaptive curve radius R≥5500m；
● The max. hanging weight 1554t(13 segments)，1553t（14 segments）；
● The safety factor of lifting wire rope: n≥6
● The elevating stress safety factor of suspender: n≥6
● Calculation of structural strength safety factor: n≥1.5
● Transmission parts safety factor: n≥1.5
● Resistance overturning safety factor: n≥1.5
● Electrical apparatus and circuitry insulated grade are carried out according to the standards of Ministry of Construction and electrical apparatus insulated grade. Defense grade: electric machine filed IP54, other electrical apparatus ≥IP65.
● Crane using grade: U0
● Crane using state ：Q3
● Crane working grade：A3
● Mechanism working grade of crane：M4
● Low deflection of main girder： S/750；the deflection of cantilever girder： L/400