The 13th five year plan for building energy conservation and green building development has been successfully completed.

Architecture is an indispensable part of it.

Precast buildings are the necessary way for green buildings.

Compared with other structural forms such as reinforced concrete structure and masonry structure, steel structure cast building has many advantages, such as high strength, light weight, good plastic toughness and seismic performance.

1、 Precast buildings are the way to transform traditional buildings into green buildings.

The most prominent advantage is that there is little use of cement, gravel and other materials, which greatly reduces the environmental pollution problems such as dust, construction waste and noise, and meets the requirements of green buildings to reduce emissions and pollution.

Write in front and turn over the history of human development.

From daily refrigeration and heating, cooking and laundry, to building material manufacturing and construction…

It is suitable for mechanized processing, with high degree of industrialization and short construction period.

The precast construction site is mainly dry operation, which can effectively reduce energy consumption and environmental pollution; In addition, because of its removable characteristics, precast buildings can also be reused; According to the calculation of senior experts in the industry, the carbon emission of various precast buildings in the construction stage can be reduced by about 20% compared with that of cast-in-situ; In the whole life cycle, due to the use of new materials, carbon emissions can be reduced by nearly 40%.

During the “severe cold” period, nearly 1.5 billion square meters of newly-built and renewable energy-saving buildings have been completed, with an energy-saving construction area of nearly 1.5 billion square meters.

The core advantage of precast buildings is to reduce pollution and emissions.

It is based on the objective competitive advantage of cast steel structure.

Hydropower installation and main installation can be carried out simultaneously.

Most components of precast buildings are completed in factories.

A large amount of energy is consumed in the whole process of building materials production, building construction and building use.

Today, scientific and technological progress has led to the rapid development of modern construction technology.

With the advent of the industrial revolution, modern buildings with reinforced concrete as the main material began to appear, and its representative work is the skyscraper towering into the clouds.

Steel structure buildings account for 30.2%, which are mainly used for long-span workshops, gymnasiums, super high-rise office buildings, etc; Wood structure and others account for only about 1.5%.

Since the Paleolithic age, humans have had the concept of cave dwelling.

In the following years, after the transition of animal bone tent and animal skin tent, it entered the Neolithic age from the Paleolithic age.

This kind of residence originated from natural caves and dug with simple tools has become the earliest architectural form of mankind.

Precast concrete structure buildings account for 68.3%, which are mainly used in residential buildings, office buildings, teaching buildings, hospitals and so on.

In the era of farming, mankind began to settle down.

How to build more “green” buildings? Recently, the Ministry of housing and urban rural development issued the 14th five year plan for building energy efficiency and green building development (hereinafter referred to as the plan), which makes it clear that China will vigorously promote the construction of green buildings during the 14th Five Year Plan period.

Flat Feed Anchor

The construction industry is a “major energy consumer” in many industries.

With stone, wood, mud brick and thatch as raw materials, houses with real architectural elements have emerged.

By 2025, new buildings in cities and towns will be fully built into green buildings; Completed the energy-saving transformation of existing buildings with an area of more than 350 million square meters, the construction of ultra-low energy consumption and nearly zero energy consumption buildings with an area of more than 50 million square meters, the proportion of precast buildings in new urban buildings in that year reached 30%, the installed capacity of solar photovoltaic in new buildings in China was more than 50 million KW, the application area of geothermal energy in buildings was more than 100 million square meters, the replacement rate of renewable energy in urban buildings reached 8%, and the proportion of power consumption in building energy consumption exceeded 55%.

Building materials and processes have undergone repeated iterations and upgrades, and a new building form – precast building has been born.

2、 On March 27, 2019, the Ministry of housing and urban rural development issued the key points for the 2019 work of the construction market supervision department of the Ministry of housing and urban rural development, which clearly stated that the pilot of steel structure precast housing construction will be carried out: select some areas to carry out the pilot, and carry out the pilot in the construction of affordable housing and precast housing in the pilot areas, the reconstruction of dangerous rural houses, and the relocation of poverty alleviation in other places, It is clear that a certain proportion of engineering projects adopt the steel structure precast construction method, track the progress of pilot projects, improve relevant supporting policies, and promote the establishment of a mature steel structure precast housing construction system.

In recent years, China has actively promoted the transformation of buildings into “green” and achieved building energy conservation.

It is a kind of precast structure with the highest penetration rate at present.

There are three main structural forms of precast buildings, namely precast concrete structure (PC), precast steel structure (PS) and precast wood structure.

In the construction of affordable rental housing, the advantages are prominent.

It can be said that precast building is the only way for traditional buildings to transform into green buildings, and it is a crucial link to achieve the goal of double carbon.

The opinions on promoting green development of urban and Rural Construction issued by the central office and the State Council Office on October 21, 2021 once again confirmed the direction of “steel structure + housing”..

The clear planning of the key work points of the construction market supervision department of the Ministry of housing and urban rural development will promote the development of steel structure precast housing in China to a climax.

The overall delivery is 30% ~ 50% faster than traditional buildings.

During the “severe cold” period, the energy-saving construction area of existing urban buildings has reached 85.5% and the energy-saving construction area of existing buildings has reached 1.5 billion square meters.

In the steel industry adjustment and upgrading plan (2016-2020) issued by the Ministry of industry and information technology in November 2016, it was proposed that “by 2020, the proportion of steel for steel structure in construction steel will be increased from 10% in 2015 to more than 25%.

Compared with traditional buildings, precast buildings have incomparable advantages in building quality, construction period, energy conservation and environmental protection.