by Due to the large construction volume of the parking lot and the intersection between processes and disciplines during the construction process.
The total area of the parking lot cover plate is more than 110000 square meters.
Up to now, 37% of the civil works of the whole line of line 22 have been completed; Among the 8 stations, 4 stations are under civil construction, and the other 4 stations are under preliminary preparation; Among the 7 sections, civil construction is carried out in 3 sections, and preliminary preparation is carried out in the rest.
Here’s a strategy! Hot Wen subway train needs a “tire change” Are you? Hot Wen, attention! A data line can also cause the train delay of linear motor.
The throat area of chentougang parking lot is 191.4 meters long, 130.3 meters wide at the widest point, 88.5 meters narrow at the narrowest point, and the height of the main building is 9.5 meters.
It is equipped with 20 train parking inspection lines, 2 weekly and monthly inspection lines, 1 temporary repair line, 1 wheel turning line and 1 testing line.
(the above are all tentative names of the project) watching the audience repeatedly, saying that they can’t hold a loud sound and play? The new regulations clearly prohibit it! The express timetable of hot Wen line 21 is available, and the latest one of line 14 can’t miss hot Wen punch in.
Source | construction headquarters | Chen Huhui, Huang Shuan editor | Tan Yingjian..
Compared with the traditional rotary excavation and drilling method, it greatly accelerated the construction progress and saved 20% of the construction period.
The main structural components of the building shall be fabricated in the precast beam yard or processing plant, and then transported to the construction site for assembly.
It adopts the fabricated structural form of “filled steel pipe column + new U-beam + laminated plate”.
During the construction of pile foundation, subway builders innovatively applied the new drilling pile mud circulation and pressure filtration treatment equipment to realize the harmless treatment of pile foundation waste slurry through the separation of solid and liquid materials.
The steel structure in throat area is mainly composed of 215 steel pipe columns, 192 U-shaped beams and 683 H-shaped steel beams.
In the construction of U-groove retaining structure of parking lot, subway builders used the long spiral pressure grouting pile process for the first time.
According to Guangzhou Metro, in the follow-up construction, Metro builders will also promote the application of BIM Technology in secondary structure and decoration to further improve the construction level.
Introduction to Guangzhou Metro Group, The cover plate in the throat area of chentougang parking lot is the first project to implement assembly construction in Guangzhou Metro Depot The chentougang parking lot is located at the junction of Dongxin Expressway in Panyu District and NANDA trunk line.
The complex building supporting the parking lot is a class I high-rise civil building, with a construction area of about 26000 square meters and a height of 57.1 meters, including 12 floors above the ground and one floor underground, which undertakes the functions of the first and last bus stations, subway traffic connection space, subway maintenance and operation building in the future.
Following the successful capping of Qifu station, the first station of the whole line, Guangzhou metro line 22 with a design speed of 160 km / h ushered in new progress again! Recently, after more than 600 days of continuous construction by subway builders, the cover plate of chentougang parking lot and the complex building have been successfully capped, marking that the project is about to enter the electromechanical construction stage.
While ensuring the construction progress, it not only reduces the on-site labor force, saves the construction site, but also greatly improves the construction safety and quality.
To build an “Innovation workshop” in the parking lot, in the face of challenges such as large construction scale, tight construction period and tasks, and high pressure on safety management and control, the subway builders of China Railway 14th Bureau, the construction unit, have constantly carried out innovative exploration in the construction process and overcome various construction difficulties by introducing new processes.
It is divided into warehouse area, throat area, entrance and exit section line and U-shaped groove from south to north.
At the same time, 1448 ribbed comb laminated plates with a single weight of 2.8 tons are applied.
In order to solve the problem of cross construction and improve construction efficiency, chentougang parking lot took the lead in applying the “assembled” construction technology in the throat area construction.
