Especially in some large and medium-sized cities in China, due to large population density [2], land scarcity and other factors, high-rise steel structures are mostly used, which is also the inevitable trend of China’s industrial development [3].

Key words: steel structure; Assembled; Development status; Introduction to Technical System In 2020, a sudden “COVID-19” epidemic disrupted people’s original normal life, and brought precast buildings, a new building system, into people’s vision.

Since then, the steel production has been increasing, but the steel consumption is very limited, leading to serious overcapacity.

In 1990, Japan introduced the production system of medium-high rise residential buildings, adopting the modular and industrialized production mode, with high production efficiency and variable internal structure of residential buildings, which adapted to the different needs of residents.

The precast building system in Germany mainly uses shear walls, concrete, composite slabs, etc.

Liu Chang 1 Jia Xinzhi 1 Tian Xu 1 Tian Qiming 1 Tian Column 2 Li Yong 11.

In the process of promoting the adjustment of scale and industrial structure, the housing industry has experienced the continuous evolution and improvement process from standardization, diversification, industrialization to intensification and informatization.

Lifting Anchor

In 2016, Premier Li Keqiang proposed in the government work report that we should vigorously promote green buildings and green building materials, actively advocate the promotion of precast buildings and steel structures, and at the same time improve the specifications in the precast field.

In the same year, the Congress formulated a set of stricter regulations, which are also being applied.

Only a few days later, 3000 integrated houses rose from the ground, highlighting the huge role of precast steel structures, and also letting people gradually understand the precast steel structures.

Britain is vigorously promoting the development of precast buildings.

This paper briefly describes the relevant policies and development status of high-rise steel structure precast buildings, as well as the application, characteristics and advantages of the technical system formed by the company relying on the three high-rise steel structure precast buildings of Tangshan Qixin C01.

This construction method is not affected by the season, and can be normally constructed throughout the year, which saves the time of on-site maintenance, and can realize continuous construction without skip warehouse and other procedures, greatly shortening the construction period.

The steel content in the building was only 4% of the total steel content, but the total steel consumption in developed countries was 30% at that time, and the domestic steel structure only accounted for 5% of the total steel content, far lower than other developed countries.

With the witness of the people all over the country, the construction unit completed the construction of Vulcan Mountain in just 10 days and Thunder Mountain in 18 days; At the beginning of 2021, the epidemic in Shijiazhuang, Hebei Province, once again made precast integrated houses play a huge role.

The precast concrete structure has good strength and durability.

Hebei Tangshan 064000 Abstract: In 2016, the state began to focus on the field of precast buildings and issued a series of industrial policies, and the steel structure precast buildings ushered in a period of vigorous development.

In 1968, Japan put forward the concept of precast houses.

The development and application of steel structure in residential buildings need to have a high technical level.

At present, Germany is the fastest country to promote low-energy building, and is in the forefront of most countries.

1 Development status of steel structure precast buildings 1.1 Domestic development status China began to become the country with the largest steel production in the world in 1996.

In 1976, the United States Congress passed the National Industrial Housing Construction and Safety Act.

Among them, Hebei Province’s policies pointed out that a three-year construction pilot should be carried out to build steel structure precast buildings of no less than 50000 square meters.

Tangshan Jidong Development Yandong Construction Co., Ltd.

The government pointed out that efforts should be made to improve the development of the construction site, reduce production costs, improve assembly rate, save on-site construction time, improve building quality and safety performance, and finally increase the output profit rate by 10%; Strengthen organization and industrial production through new product development.

Compared with traditional reinforced concrete buildings, steel structure precast buildings have relatively high engineering costs, but they are gradually accepted because of their multiple advantages such as small floor area, high rate of acquisition [1], fast construction speed, and less impact by environmental factors under the same conditions.

The promotion of precast buildings in Singapore is fast and extensive.

Therefore, the state has issued a number of favorable policies to encourage the development of steel structure industry and consume excess steel capacity.

In 2020, Hebei, Zhejiang, Sichuan, Shanxi, Yunnan and other provinces and cities have successively issued policies on promoting the development of steel structure precast buildings.

At that time, the traditional construction method was adopted in China.

Hebei Tangshan 064000 2.

Jidong Development Group Co., Ltd.

In the following years, more and more provinces, cities and autonomous regions have issued relevant policies to encourage construction units to carry out construction work in the way of precast construction.

This is the first time that the country has put forward a work report on the development of steel structure buildings at the government level.

At the same time, the steel components for construction and PC precast components are all cut, welded, poured and maintained by the prefabrication manufacturer in the factory, and transported to the construction site for installation after reaching the age, which provides great convenience for subsequent on-site work.

In terms of the functionality of the building, the cast steel structure is also easier to be adopted by developers because of its light weight, high strength, good seismic performance and easy processing.

After several years of development, precast steel structures have gradually come into people’s sight and become known to the public.

1.2 Foreign development status In the 1970s, precast building forms began to be applied in the United States.

The housing policy and the concept of precast housing development are recognized by most countries..

Today’s precast buildings in the United States not only focus on the quality of residential buildings, but also make a lot of attention in terms of performance.

During the construction, it is necessary to focus on improving the quality of buildings and vigorously develop the component parts and node technology applied to steel structure precast buildings [5].