The NSGZQ-3 standard of Nansha Port Railway is the main control project, and it is also the largest bridge project in the middle of the whole line. The main bridge adopts steel box mixed double main beam and other high-rise tower cable-stayed bridge. The main bridge is 1118.7 meters in length. Bridge No. 156# and 157# are the main piers of cable-stayed bridges. Because the main pier is a super-large and deep-drilled pile and the geology is extremely complicated, the hardness of the bedrock is as high as 70 MPa. In addition, the construction quality requirements are high and the construction period is short. Therefore, the construction method of the main bridge pier pile foundation drilling The selection of the subcontracting team was extremely cautious. According to the engineering geological report provided by the general contractor and the pile foundation design drawings, the XCMG XR550D rotary drilling rig was finally selected, and a detailed construction plan was obtained in the shortest time. Characteristics 01. Configure five-section machine-locked drill pipe with a maximum diameter of 3.5m and a maximum drilling depth of over 100m. It can adapt to most hard rock deep piles in China. 02. It adopts H-type hydraulic telescopic crawler chassis for rotary drilling rig, which is fully developed independently. It is equipped with large-diameter slewing bearing to ensure superior stability and convenient transportation. The chassis has swinging legs to assist in disassembly. 03, 132m full single-row rope main hoisting technology, to ensure the main hoisting 60 tons of lifting force, while effectively solving the problem of wire rope biting rope, grinding rope, greatly extending the service life of wire rope 04. The power head has the common mode and the rock entering mode, which respectively works on the soil layer and the rock stratum, improves the construction efficiency, and the power head has the automatic rotation function. The rotation speed is continuously adjustable in the rock entering mode, which is suitable for hard stratum construction. The world's largest tonnage self-made chassis rotary drilling rig XR550D debuted at the Nansha Railway Xijiang Bridge Xugong XR550D used to have a trouble-free working time of more than 400 hours on the Hanjiang Bridge, and completed a pile construction through grading drilling, creating a value of nearly one million yuan for users. This time, we will undertake the construction tasks of two main piers of 156# and 157# and several kilometers of railway bored piles. After the groundbreaking ceremony, the drilling of the two main piers on both sides of the Xijiang River officially began. The XCMG XR550D will definitely perform another wonderful event. Here, I wish the project a complete success! In strict accordance with ISO 9001:20015 and Wind Turbine Forging; Wind Turbine Forging,Wind Turbine Forging Quality ,Custom Wind Wind Turbine Forging,High Quality Wind Turbine Forging Shanxi Tianbao Group Co.,Ltd. , https://www.tbflange.com
The grand opening ceremony of the main bridge pier foundation project of the Nansha Port of Guangzhou Nansha Port Railway was held. Three XCMG XR550D rotary drilling rigs were very eye-catching at the groundbreaking ceremony.
1.Make process card and quality plan
2.Choose the qualified raw material and do incoming test, not allowed
nonconforming material to enter into production process;
3.Producing and testing followed the quality documents
4.Be good at Quality records and product identification to ensure the product
traceability
5.Do the final inspection to ensure 100% of pass.