The first cast-in-place box girder of the construction section of the Zhengzhou South Fourth Ring Road Project, constructed by China Construction 7th Bureau, was completed. In order to ensure construction efficiency, the company purchased 4 sets of Truss Gantry Cranes from Weihua, which were responsible for the lifting and loading of the prefabricated girders for segmental splicing.
The South 4th Ring Road Viaduct in Zhengzhou is designed for 4 lanes in both directions and faced the following challenges during construction:
Large-span lifting: The bridge is wide, and prefabricated girders need to be lifted across the entire viaduct.
Efficient and coordinated operation: Multiple gantry cranes need to operate synchronously to ensure construction efficiency.
Safety and precision control: Precast girders need to be lifted and positioned accurately, with safety features such as anti-deviation and anti-overloading.
According to the customer's requirements and site conditions, Weihua provided four customized truss gantry cranes with the following parameters:
Model: MG Truss Gantry Crane
Capacity: 100+100 tons
Span: 57m
Lifting height: 20m
Uses: Lifting Precast Girders
Order quantity: 4 sets
Project Time: 2017
Large span coverage: spanning the entire viaduct, adapting to the construction needs of 4 lanes in both directions.
High load capacity: single truss crane lifting capacity of 100 tons, to meet the needs of lifting large prefabricated girders.
Modularized construction: High-efficiency bridge erection is achieved through segmental lifting, prestressing, and repetitive splicing.
Full frequency conversion control: to realize smooth startup and precise positioning, reduce shock load, and extend equipment life.
Dual lifting trolley design: The two lifting trolleys can operate independently or work together synchronously to improve lifting efficiency.
Intelligent deviation correction device: To ensure that the truss gantry crane runs in a straight line along the track, avoiding the risk of deviation.
Wind speed monitoring system: Real-time monitoring of wind speed to ensure construction safety in windy weather.
Multiple safety protections: Equipped with an overload limiter, limit switch, and alarm device to eliminate potential safety hazards.
With the features of large span, high precision, strong stability, and intelligent control, truss gantry crane greatly improves the construction efficiency and also guarantee the safety and quality of viaduct projects. At present, the truss gantry cranes produced by Weihua have been widely used in the construction of bridges, ports, large-scale factories, etc. We can provide customized solutions according to different working conditions. Welcome to contact our professional team.
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