Segments Assembly Launching Gantry

Segment Assembled Bridge Girder Launcher
Segment Assembled Bridge Girder LauncherSegment Assembled Bridge Girder Launcher
Application range and usehide/show
HZP1600 segments assembly launching gantry is used to erect the prestressed concrete girder with span 50m and 51m. The assembly of girder adopts stub matching precast which assembled on site, the girder is put on the piers simply and then combined span by span firmly. The maximum weight of prestressed segment shouldn’t exceed 130/140t. The construction method of HZP1600 segment assembled bridge girder launcher is the segmental hanging and then construction tensioning after the steel strands are threaded.
Main features and advantageshide/show
◆ It adopts two-span type;the bearing part of main frame uses box girder structure with good twist resistance; the front and rear guiding girder adopt truss girder structure with light weight.
◆ it is equipped with 10t crane which lift some small parts on the bridge in order to construction conveniently.
◆ The layout of whole machine is parallel, so it can travel reversely. The front and rear legs adopt the same structure which can make the leaping backward come true, in order to improve the efficiency.
Main Parametershide/show
Product Model HZP1600
Max. hanging weight(t) 1600
span(m) 50、51
Lifting height of trolley(m) 56
Rated lifting capacity(t) 140
Max. working slope 2%
Max. working transverse slope 2%
Min. curved radius(m) 5500
Traveling speed(m/min) 1
Speed of erection of girder(day/span) 10
The whole machine power(kw) 180
The total weight(k) 750
The design basis of producthide/show
We design the launching gantry according to the rules of the newest machinery and crane in China, the rules are following:
《Cranes–Test code and procedures》 GB5905
《Safety regulations for hoisting machinery》 GB6067
《Code for design of steel structures》 GB50017
《Safety technology specification for special equipment》 TSG Q7002、Q0002
《Code for construction and acceptance of steel structure》GB50205
《Standard for quality inspection and evaluation of steel structure engineering》 GB50221
《Weld Outer Dimensions for Steel Construction》GB10854
《Code for construction and acceptance of electric equipment installation engineering》 GB232
《General technical requirements of assembly》 JB/ZQ400.9
《Mechanical properties of fasteners》 GB3098
Main requirements of designhide/show
◆ Technical index;
Safety factor 1.5
Using grade: U3
Load state: moderate
Working grade of the whole machine: A3
Working grade of the mechanism:M4
Working condition and requirements of design etc.
◆ Calculation analysis and check-calculation of the whole structure According to technology condition of design of crane, we confirm the construction condition, and then calculate and analyze the strength, stiffness and stability.
After the classical calculation, we start the calculating work of design of steel structure, and adopt the finite element analysis, the load applied to models respectively, and then calculating and analyzing beam element and plate element. Finally, the authoritative department will check and calculate again.
Main mechanical manufacturing technologyhide/show
quality control of manufacturing processhide/show
Tracing data and leaving factory data of producthide/show
The method and steps of installationhide/show
Checking methods after installation of producthide/show
operating requirements and attentionhide/show
Time and item of maintenancehide/show
Disassembly and steps of transferring sitehide/show