Changsha Airport's "King of Transfers" fully entered the main construction stage

Changsha Evening News, Changsha, July 3 (all media reporter Chen Huanming correspondent Liu Zhen) In the past few days, the maximum temperature and outdoor temperature of Changsha exceeded 30 ° C, and the heat waves are compelling. At the site of the comprehensive transportation hub project (GTC project) of Changsha Airport's reconstruction and expansion project, the construction workers were busy tied steel bars and branches. They were sweating and full of energy. Hundreds of machinery and equipment shuttled back and forth.

On the 3rd, the reporter learned from the Changsha Airport GTC project consolidation headquarters that since the GTC project started at the end of June last year, the current subway, magnetic floating, high -speed rail and other construction areas have fully entered the main construction stage. , To achieve the "double half" goal. More than 2,000 front -line builders are under the scorching sun and the high temperature and orderly construction to ensure the orderly progress of the project construction.

Project: A variety of traffic one -stop "zero sense transfer" within 5 minutes

The total area of ​​Changsha Airport's reconstruction and expansion project covers an area of ​​about 15,000 acres. It is the construction project of the "14th Five -Year Plan" of the national "14th Five -Year Plan". On June 28, 2021, the "lead" project of Changsha Airport's reconstruction and expansion project -Comprehensive Transportation Hub Project (GTC Project) was launched.

The GTC project of Changsha Airport is located on the east side of the runway runway of T2 Terminal of Huanghua International Airport. The nearest distance is about 90 meters apart. "The GTC project is currently the most complicated construction conditions in China in the comprehensive transportation hub of the airport in China. It can be said that it is the" Encyclopedia Book "of the underground rail transit construction of the National Airport Comprehensive Transportation Hub." Luo Tiansheng, the project manager of the ministry, said that the total construction area of ​​the project is 495,400 square meters, including a number of single projects such as comprehensive transportation centers, subway stations, magnetic floating stations, high -speed rail stations, parking buildings, and viaducts.

Luo Tiansheng introduced that the GTC project adopted a double -layer flat connection plan in China for the first time. After completion, it will integrate the "four types of five rails", that is, 4 ground traffic and 5 rail transit. Verse, bus, social vehicle, subway, magnetic floating, high -speed rail and other transportation one -stop "zero -sensing transfers" are the modern three -dimensional transportation comprehensive hub with the most transportation connection methods and the highest seamless transfer efficiency in the country, becoming a national airport "The King of Transfers".

Features: Complex structured "Lie Luo Han", the project construction is difficult and high

The "King of Transfers" brings unprecedented convenience to passengers, but due to its complex structural design inside, many construction majors and a large number of cross overlap have brought huge problems to the project construction.

"There are more than 30 pressure overlapping points in the inside and outside of the project. One cross point is a controlled node, which is very difficult to build; the deepest part of the deep foundation pit is 36.22 meters, and the earthwork is difficult to remove outside. Special requirements such as fire work, etc., the tower crane height cannot exceed 40 meters ... "Standing at the construction site, Huang Hua, chief engineer of the project," like a few treasures "on the project.

Huang Hua introduced that the interior of the project's subway, high -speed rail, magnetic floating, and viaducts such as "stacking Luohan" overlapped to form a large -faced crushing area. The lower structure must be completed and transferred to the upper construction. Comprehensive transportation centers and terminals are closely linked, and the depths are different, so more than 30 "pits and pits" have been formed.

Among these 30 pits, the three construction units are divided into 6 large and 23 communities in cross operations; 4 owners' units, 2 supervision units, involving more than 40 majors, and thousands of people at the peak at the same time. "The project involves many units, many professionalism, and collaboration, and it is difficult to cross with the terminals, flight areas, and municipal engineering. It is difficult for traffic organizations. These are the" blockbusters' of the project's progress. "Huang Hua said.

In order to make the foundation pit excavation more orderly, cross -construction is more scientific, the project performs 4D simulation through BIM technology to make the foundation pit visualized, preview the reasonable of people, materials, machine resources, and excavation areas in advance. Block construction, rationally organizes soil excavation and transportation routes, which improves nearly 40%.

The project has also established a "smart construction site" digital scheduling center and CNC steel processing plant. "We have determined the goal of creating the‘ Luban Award ’and Green Jian Samsung, and determined to build a‘ century project ’that can withstand historical tests.” Huang Hua said.

Progress: Each work area of ​​the project is fully entered the main construction stage

The reporter saw at the project construction site on the 3rd that on the construction site of thousands of acres, more than 20 tower cranes rotated back and forth, hundreds of cranes, excavators, slag cars kept shuttle, pile machines, drilling machines and other rangs. Heat is facing the sky.

The GTC project of Changsha Airport is led by the five bureaus of China Construction, and China Railway Construction Industry Group and Hunan Province Liujian participated in the establishment of the establishment. According to the division of labor, the China Construction Five Bureau is responsible for the comprehensive transportation center, parking building, and T3 station of Huanghua Airport T3 Station of the Metro Line 6; China Railway Construction Engineering is responsible for the early implementation of Huanghua Airport Station and the East Tunnel of the Airport; The front viaduct, Changsha magnetic floating T3 station, passenger night house land construction project, etc. At present, all work areas have entered the main construction stage.

"Huanghua Airport High -speed Railway Station belongs to the few underground high -speed rail stations in China. The base pit is 1093 meters long, 64 meters wide, and 36 meters deep. It has the characteristics of ultra -long, ultra -width, ultra -depth, which makes the construction face a lot of challenges." Li Kai, chief engineer of the China Railway Construction Industry Changsha Airport Project, introduced that the high -speed railway industrial zone has completed all nearly 4,000 piles of foundation construction, and 1.86 million cubic meters of earthwork has been completed by about 50%. It is expected Completed, "We have improved the construction and expand the construction of the construction, ensuring that the eight unearthed points are unearthed simultaneously, which greatly improves the construction efficiency." Changsha Magnetic Floating T3 Station is the basic project of the largest underground magnetic floating station in the country. Construction, completed the first floor pouring on March 25, and welcomed the first top plate pouring on May 21. Lin Haowang, the person in charge of the provincial Liujian Changsha Airport project, told reporters that the magnetic floating T3 station and the integrated transportation center and the subway are crossing the "ten" in the ground. Scientific layout, seamlessly docking, "The viaduct of Terminal T3 also faces this problem. The project department has to adopt sewing pins and dot -shaped construction, and finally connect the viaduct into line."

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