In the early morning of the winter solstice, the mountain city of Chongqing woke up in the mist. At the site of the Chongqing Rail Transit Line 15 construction project, between dozens of 100-meter-high bridge piers, the intelligent bridge construction machine developed by the Third Construction Engineering Co., Ltd. of China Construction Third Bureau and the China Academy of Advanced Technology for Construction is promoting the intelligent construction of the bridge cantilever between dozens of piers. This new bridge construction system allows the bridge deck structure to grow and close as if it were alive.
Overcome the technical difficulties of mountain sand concrete, develop intelligent equipment such as "aerial building machine" and "bridge tower machine", innovate the "micro blasting" process, and build a zero-carbon emission factory ......Over the past 70 years since its establishment, China Construction Third Engineering Bureau and No. 3 Company has adhered to the "new" approach, constantly innovated technology, new equipment, and innovative concepts, created more than 100 international leading key technologies and equipment in the field of construction, and led the development of the industry with vigor.
Technological innovation: dare to be the first to fill the gap in the industry.
Walking into the corporate culture exhibition hall of the third company of China Construction Third Bureau, a certificate of merit issued by the National Science Conference in 1978 is particularly eye-catching. The certificate reads: "In order to commend those who have made significant contributions to China's scientific and technological work, this certificate is hereby awarded to encourage them", "Awardee: Laboratory of the Fifth Company of the Third Engineering Bureau of the State Construction Commission", "Achievements Completed by Cooperation: Mountain Sand and Fine Sand Concrete - Mountain Sand Concrete Research".
The Fifth Company of the Third Engineering Bureau of the State Construction Commission is the predecessor of the Third Engineering Bureau of China Construction Third Bureau. Zhou Qipeng, a participant in this achievement, said that in 1971, the company was transferred to Liupanshui, Guizhou Province to participate in the construction of the Shuicheng Power Plant. Transferring canal sand from hundreds of kilometers away is time-consuming, laborious and costly.
Zhou Qipeng said that in order to overcome the technical difficulties in the application of mountain sand concrete, the company set up a technical team to test the cubic compression, tensile and bending properties of mountain sand concrete. Then, fatigue tests were carried out on concrete with different sand, stone and cement mixtures, and finally it was verified that mountain sand could be used in components with repeated loads. The results of the research have been published in authoritative periodicals in the construction industry, and mountain sand has also been widely used in the Shuicheng Power Plant and other "third-line" projects.
Since its establishment in 1953, China Construction Third Engineering Bureau No. 3 Company has always insisted on technological innovation and accumulated profound construction technology and experience in the field of construction.
In the construction of Chongqing Shancheng wide-screen cinema, the innovative use of "eggshell-shaped roof" has achieved lower cost and shorter construction period compared with similar buildings in ChinaIn the construction of Xiamen Fushan International Exhibition City, it took only 157 days to complete the construction period of 450 days, creating a rare "Fushan speed" in the history of the construction of Xiamen Special Economic ZoneIn the construction of the Shanghai Super Brand Plaza project, the computer was used to carry out three-dimensional real-time research on the whole construction process, creating a precedent ...... for the application of digital technology in the field of building construction
Chongqing Luhai International Center, Guangzhou Baiyun Airport T3 Terminal, and Hangzhou International Sports Center are all built by us, and our famous brand projects are all over the country and even the world. Ding Weixiang, chief engineer of the third company of China Construction Third Bureau, introduced that in the fields of airport station building, bridge tunnel road, petrochemical industry, super high-rise buildings, etc., the company has formed more than 1,000 patents, technologies and construction methods, providing solutions for continuously expanding the height, span and depth of the building, and has won nearly 60 Luban and National Excellence Awards.
The picture shows the first phase of Chongqing Rail Transit Line 15 project. Photo by Xu Yu.
New equipment: intelligent construction leads the industry trend.
Can be jacked. In the Wuhan Taikang Financial Center project, with the order of the technical staff, the new generation of "aerial building machine" jointly developed by the third company of China Construction Third Bureau and the general contracting company of China Construction Third Bureau was slowly launched. This new landmark building in Wuhan, with a height of about 270 meters, will "grow jointed" at a rate of about 5 days.
Li Jin, head of the R&D team of the "Air Building Machine" of China Construction Third Bureau and Third Company, introduced that the "Air Building Machine" is an integrated platform for lightweight construction equipment for super high-rise buildings, which is composed of a combination of support power system, steel platform system, pylons and protection systems. Workers can complete flow operations such as steel bar binding, formwork support, concrete pouring and maintenance in a fully enclosed platform, and realize factory construction at an altitude of hundreds of meters.
Liao Ji, head of the technical department of the third company of China Construction Third Bureau, said that in the past in the construction of super high-rise buildings, construction technologies such as sliding formwork, climbing formwork, and lifting mold were generally used, which could not meet the construction requirements of higher height and more complex structure. In order to solve this problem, since 2010, the company has participated in the independent research and development and update of the "air building machine" platform technology with higher safety, convenience and efficiency. At present, this platform technology has been applied to many super high-rise landmark buildings such as Suzhou International Financial Center and Chongqing Luhai International Center.
Starting from the research and development of "aerial building machines", China Construction Third Bureau and Third Company continue to expand the application field of intelligent construction platform and promote innovation and breakthrough in core technology and equipment in the field of infrastructure.
In September 2019, the main tower of the Yangtze River Bridge in Wujiagang, Yichang City, which spans more than 1,000 kilometers, was capped, and the world's first "bridge tower building machine" was developed with a working principle inspired by the "aerial building machine" during the construction process.
Li Jin said that the "bridge tower machine" has the characteristics of one-key start, synchronous jacking, automatic leveling, real-time monitoring, safety and stability, precision and efficiency, which can not only resist 14 winds, but also increase the construction efficiency by more than 30%, especially in the low temperature environment, the advantages of the construction period are more obvious.
Intelligent construction not only promotes the development of enterprises to a "higher level", but also leads the development trend of the industry.
The "Aerial Building Machine", "Bridge Tower Machine" and "Residential Building Machine" developed by China Construction Third Engineering Bureau and Third Company, China Academy of Advanced Building Technology and other units have successively appeared at the 2022 and 2023 China International Intelligent Industry Expo. Among them, the "Residential Building Machine" was selected as the "Typical Case of Intelligent Construction New Technology and New Product Innovation Service" issued by the Ministry of Housing and Urban-Rural Development.
The picture shows the Taikang International Financial Center project in Jiang'an District, Wuhan City. Photo by Li Jingwei.
Concept innovation: efficient and low-carbon "building" green development.
The direction of the air conditioning duct "collides" with the main structure, the water supply and drainage system is blocked in some parts, and the elevation of the steel structure and the concrete structure overlaps......Walking into the BIM center of the third company of China Construction Third Bureau, the technical staff is conducting electronic simulation "pre-construction", and the red letter information flashing frequently on the computer reminds everyone that the project drawings should be optimized to avoid "real" problems during construction.
Lei Quanyong, head of the BIM center of the third company of China Construction Third Bureau, introduced that in the past, building construction was often civil engineering, steel structure, installation, decoration and other specialties according to the drawings of the construction, and the adjustment was carried out in the process, which inevitably led to discrepancies in drawings and unclear handover, and once there was a problem, it was necessary to rework. This not only delays the construction period, but also causes a lot of material loss and even pollution.
Lei Quanyong said that in order to solve this problem, the company has equipped a professional BIM team of more than 500 people in a number of key projects to vigorously promote the in-depth research and development and application of digital technology.
This is a microcosm of the company's efforts to accelerate the exploration of green construction methods, transform and upgrade traditional businesses, and strive to promote low-carbon development.
In recent years, China Construction Third Engineering Bureau No. 3 Company has always taken better resource conservation, environmental protection, pollution reduction, providing people with healthy, applicable and efficient space, and maximizing the harmonious coexistence of man and nature as the development direction of the enterprise.
Coming to Yuliangzhou in Xiangyang, Hubei, this once barren soil and sparse trees in the middle of the river has now become the largest urban ** ecological park in the local area.
The picture shows Xiangyang Yuliangzhou ** Ecological Park. Photo by Tangshan.
An Yingqian, project manager of Yuliangzhou ** Ecological Park of China Construction Third Bureau and Third Company, introduced that since the construction of Yuliangzhou ** Ecological Park project was launched in 2019, it has cooperated with Huazhong Agricultural University and other universities to carry out scientific research, and continuously optimize the soil structure, topography and water system of the wasteland through the comprehensive use of advanced technology, new construction technology and new building materials, and explore planting and regreening. At present, 1.35 million square meters of soil have been improved, 1 million square meters of vegetation have been planted, and the whole area of Yuliang Island is being greened.
Forge ahead for 70 years, do not forget the original intention and start again. Wang Yanbo, Secretary of the Party Committee and Chairman of the Third Company of China Construction Third Bureau, said that the company will unswervingly implement the new development concept, increase scientific and technological innovation, build green buildings, promote industrial upgrading, and make due contributions to central enterprises. (Reporter Wang Zichen reports from Wuhan).
Layout of the Economic Information Daily.
Editor-in-charge: Gao Yungang.