By the surging Yangtze River, Sunward's heavy equipment has once again achieved new merit!

It has been exactly one month since the pile foundation project of the Yichang Yangtze River Rail-Road Bridge started construction. As the main construction equipment for the project,SunwardSWDM600 rotary drilling rigs have demonstrated extraordinary capability, laying a solid foundation for this "world-class project" and winning high praise from the construction contractor.

As a key river-crossing corridor shared by the Shanghai-Chongqing-Chengdu High-Speed Railway and the Hohhot-Nanning High-Speed Railway, the Yichang Yangtze River Rail-Road Bridge has a total length of 2.782 kilometers and a main span of 800 meters. It adopts a composite design of "four-track high-speed rail + six-lane municipal road + two rail transit lines," setting a world record as the first and largest-span three-purpose steel truss cable-stayed bridge with the railway on top and the highway and rail transit below.

This project is an important component of building a comprehensive three-dimensional transportation corridor for the Yangtze River Economic Belt. Its completion is of great significance for improving China's railway network layout, building Yichang into a transportation hub, accelerating Hubei Province's "one primary and two secondary" development strategy, promoting coordinated regional development, and improving Yichang's river-crossing road network and urban development.

The construction contractor for this project is China Railway Major Bridge Engineering Group Co., Ltd., and the contractor for the pile foundations of the No. 7 and No. 8 main piers is the Mechanized Construction Branch of China Railway Major Bridge Engineering Group. This is a key control project for the entire bridge and indeed the entire Yichang-Fuling Railway. The main piers are designed with a pile diameter of 3 meters and 40 and 42 piles respectively, with pile depths ranging from more than 30 meters to more than 60 meters. The geology consists of red sandstone, pebble layers, and limestone, with the hardest part having a uniaxial compressive strength exceeding 60 MPa.

In addition, because the site is located in an ecologically sensitive area, pile foundation construction needs to minimize the impact of vibration and noise on surrounding flora and fauna. To ensure the project is completed as required, the contractor ordered two SWDM600 rotary drilling rigs, the largest rigs for the project, as the main construction equipment.

Faced with highly challenging working conditions, Sunward's SWDM600 rotary drilling rigs rose to the occasion with superior performance, repaying customer expectations with high efficiency and earning customer recognition. The equipment has a maximum hole diameter of 3.5 meters and a maximum drilling depth of 145 meters. It is equipped with a high-power engine, large-displacement main pump, and three-motor power head, providing super-strong rock-drilling capability. At the same time, the industry's first high-inertia rotary platform braking force enhancement technology solves the problems of rotary platform shaking and low hole-forming precision caused by instantaneous large impact loads, enabling it to easily meet the construction needs of ultra-deep and ultra-large pile foundations for the bridge.

To support key customers and key projects, Sunward established a dedicated service support team for the project's logistics service support, winning high praise and recognition from the project department, which said it was "the best service provider among all suppliers."