The boom of precast buildings has started, and the aluminum alloy pedestrian overpass has entered the “building block era”
The future has come and will come.
In terms of equipment, China’s large-scale extrusion, hot continuous rolling, finish rolling and other equipment have reached the world leading level.
After years of rapid development, China has become the world’s largest aluminum producer and consumer, and its comprehensive strength has been significantly enhanced.
The application and development of aluminum overpass as a new aluminum alloy material has important theoretical and practical significance for the development of modern bridge engineering.
Take a look at the bridge assembly construction process.
The “high, light and bright” Aluminum Alloy Pedestrian Overpass not only meets the needs of convenient traffic in the city, but also reflects the technology and landscape of a city to a certain extent.
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The two sides jointly designed and developed the structural system of Aluminum Alloy Pedestrian Overpass and jointly compiled industrial technical standards.
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The cast construction of bridge has the characteristics of design standardization, product modularization, production industrialization, assembly mechanization and fine management.
The structure is pre assembled in the factory.
overcomes the above difficulties, adopts the DFMA design concept, and the production and manufacturing process is modular, standardized and mechanized.
Aluminum alloy has high cost performance and material ratio.
As one of the few domestic aluminum overpass design and manufacturing suppliers, Guangdong aluminum Bridge Engineering Co., Ltd.
On the one hand, it has established a strategic partnership with AAG Asia Aluminum, one of the largest aluminum profile suppliers in Asia, to provide it with the design and manufacture of high-precision and sharp aluminum extruded profiles; On the other hand, it cooperated with Guangdong Jianke Architectural Design Institute to provide technical support for bridge design.
The density of aluminum alloy is about 1 / 3 of that of steel and 1 / 5 of that of concrete, which is conducive to reducing the dead weight of the bridge; Strong corrosion resistance and low maintenance cost; High toughness, no low temperature brittleness, can be widely used in a variety of climatic conditions; Durable for 50 years; It can be recycled, and the recovery rate can reach more than 90%, which is green and environment-friendly.
The factory makes main truss beams, stairways and other components.
It is an effective means to speed up the construction speed, reduce on-site pollution and realize low-carbon construction.
Auxiliary components are installed, greening and lighting * taking the three-dimensional pedestrian crossing facilities project of Zhuhai Yingbin North Road of Guangdong aluminum bridge engineering company as an example, scholars compare it with the traditional construction mode, It is generally believed that precast construction can improve production efficiency, improve project quality, shorten construction period, reduce labor force and reduce energy consumption.
It is believed that more and more pedestrian overpasses will be built by precast assembly and aluminum alloy materials in the future.
There are mainly the following problems in the promotion and application: imperfect standard system, contradiction between building diversity and standardization, high cost, industrialization team urgently needs to be cultivated, etc.
It has great advantages in energy conservation, emission reduction and environmental protection.
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The main characteristics of aluminum alloy overpass can be summarized into three words – “high, light and bright”.
Our architecture is subverting the imagination, and our bridge industry is also surpassing the imagination- .
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“Replacing steel with aluminum, saving wood with aluminum, saving copper with aluminum and replacing plastic with aluminum” has won extensive social consensus.
As one of the important measures to alleviate the traffic pressure, the pedestrian overpass will appear more over each city.
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“High” refers to the high scientific and technological content of aluminum alloy pedestrian overpass; “Light” refers to the aluminum alloy pedestrian overpass with light structure and light weight; “Bright” refers to the bright visual appearance of aluminum alloy pedestrian overpass.
It can be said that in the whole life cycle of aluminum, due to its abundant reserves and excellent performance, aluminum is widely used in industry and life, ranging from aerospace and transportation to household appliances and pots and pans, which has brought huge social and environmental benefits to many industries and has been recognized more and more widely* With the continuous improvement of people’s living standards and the acceleration of urbanization, the urban traffic pressure is increasing.
However, compared with western countries, the degree of building assembly in China is not high, the market is developing, not yet mature, and lack of design and construction experience.
The so-called cast bridge means that the columns, bent caps, box girders and other components of the bridge are precast in the factory workshop, and then transported to the site, and assembled with large hoisting equipment like “building blocks”.
Aluminum alloy overpasses have the advantages of light structure, low maintenance cost, strong corrosion resistance, fast construction and little interference to traffic.
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Basically, a bridge beam can be processed and pre assembled within one month.
According to statistics, among the 124 existing industries in China, 113 are related to aluminum.
Under the guidance of national policies, precast bridge structure has been partially applied in various projects, but it is far from being fully popularized, and has great development potential.
The bridge body and components are assembled.
The bridge body and components are transported out of the factory.
The traditional bridge engineering basically takes steel as the main construction material, which is troubled by the durability problem caused by its poor corrosion resistance.
The main truss beams and stairways are hoisted.
