Since the new century, more and more attention has been paid to the quality of housing construction, and legal provisions on the supervision and management of housing construction quality have been promulgated to regulate the construction mode of the entire construction industry. In this context, the construction technology of prefabricated concrete structures in my country came into being.

1. Precast concrete technology

Precast concrete technology is also called PC technology, and it has been widely used in my country. This technology, to a certain extent, has brought a huge momentum for the development of housing construction and other building construction in my country. PC technology is mainly used in fully prefabricated concrete components, such as stairs, balconies, air-conditioning panels, and some interior partition panels in house construction that are common in our lives. However, as the economy continues to develop, scientific research in construction in my country has gradually matured. On the basis of PC technology, people in the construction industry have developed PCF technology. PCF technology is the construction of precast concrete formwork. Technology, it can well solve the quality problems that occur in the wall. PCF technology has now been widely used in prefabricated concrete laminated floor slabs and shear external wall molds, as well as some other components of house construction.

In real life, PC technology is mainly aimed at the application of some installation technology in housing construction and the production process of fully prefabricated components. This technology can largely solve the problems of house insulation, water seepage, overall wall prefabrication and wall decoration. However, the PCF technology mainly focuses on solving the problems of the external wall formwork, which can effectively avoid the great safety hazards caused by the large number of erection brackets around the building in the process of building construction. To a large extent, the construction safety of housing construction is guaranteed. However, because the PCF technology did not consider the bearing capacity of the external wall concrete formwork on the wall and its rigidity during the design, it is likely to cause a large amount of waste of building materials and make the actual structure and calculations The setting is very different, which affects the overall seismic resistance of the building.

2. NPC technology system

NPC technology, also known as a new type of concrete prefabrication assembly technology, is mainly formed by introducing foreign advanced prefabricated concrete technology under the premise of meeting the actual conditions and design requirements of my country's housing construction, and organically combining the two. And then form the NPC technology with its own particularity. The new type of concrete prefabrication assembly technology currently belongs to a brand-new construction engineering technical means in our country. Its construction is mainly based on on-site assembly and factory mechanized production. This technical system was proposed by my country South China Construction Group. Compared with the current domestic construction technology of domestic construction projects, NPC technology has its own obvious advantages. It can effectively reduce the noise generated during the construction process and reduce the pollution of the construction site of the construction project. In addition, this technology also has energy saving, environmental protection, saving building materials, saving construction manpower, reducing the construction cost of the project, and shortening the construction period. And other advantages. It is precisely because of these advantages of the new concrete precast assembly technology that it is widely used in residential and commercial buildings.

3. Assembling monolithic precast concrete shear wall technology

Shear wall refers to the wall of housing construction and other buildings that can withstand the horizontal load caused by earthquake and wind load. At the same time, shear wall is also called structural wall, seismic wall or Wind-resistant wall. The shear walls in house construction are mainly divided into two types, one is the plane shear wall and the second is the cylindrical shear wall. Among them, the plane shear wall is widely used in the current housing construction. Generally, the plane shear wall is used in the reinforced concrete lifting mechanism, frame structure and beamless floor. In order to increase the strength of the entire building structure, the ability to resist collapse, and the overall rigidity of the structure, in the specific construction process, certain parts of the structure can be prefabricated or poured to assemble reinforced concrete shear walls.

The technology of assembling monolithic precast concrete shear wall shows its super operability in the actual construction of housing construction. It can not only make horizontal laminated floor slabs, stair slabs, but also vertical Shear wall template production and balcony production, etc. However, it also has some shortcomings. For example, when using this technology, the components involved are heavier and larger in volume. In addition, the technology of assembling monolithic precast concrete shear walls places great demands on equipment. The height and operation form are relatively simple. As a result, it is difficult to meet the requirements of some complex constructions.

4. Composite slab concrete shear wall technology

The fundamental starting point for the development of this technology is derived from the characteristics of the shear wall and its role in house construction. In the construction of houses, shear walls mainly play the role of load and load-bearing to ensure the stability of house construction. Since the structural load-bearing in the housing construction is mainly borne by the wall itself, this kind of shear wall not only has to bear the force brought by the earthquake action and wind load, but also bears the transmission of its own horizontal members in the building. Coming vertical load. Therefore, in order to ensure the building quality of the house, we must first ensure the quality of the shear wall during construction, and increase its rigidity and strength through continuous research on the production mode of the shear wall. The technology of laminated slab concrete shear wall was developed in such a construction environment. Its components can be divided into laminated wall panels, prefabricated floor slabs, laminated floor slabs and so on. Some engineering practices have shown that under the guidance of the laminated slab concrete shear wall technology, the strength and rigidity of the shear wall have been improved to a large extent, and the overall construction of the shear wall is more reasonable and standardized.

Measures to improve technology

1. Strengthen the production of standardized mathematical models

Strengthening the standardization of mathematical models in the construction field can not only make the process of house construction more reasonable and scientific, but also greatly shorten the construction time, which plays a very important role in house construction projects. At present, although my country has developed many new construction technologies in housing construction, breakthroughs have been made especially in prefabricated concrete construction technologies. However, there are still many shortcomings in the production of standardized mathematical models for housing construction, which leads to a lack of standardized control over construction technology during the construction process. Therefore, my country wants to further develop the prefabricated concrete construction technology for housing construction. , Then, we must pay attention to the production of mathematical models. This is very important for the standardization control and optimization of the management system of the entire project.

2. Coordination of management and technology

Technical support alone is far from enough for the development of housing construction in my country. It is also necessary to pay attention to the management of construction technology and other aspects of the project. A scientific management method is used to promote the progress of the entire house construction technology, and at the same time, management can be the protector and guide of the implementation of technology. Realize the coordinated development of technology and management in housing construction projects, so that the housing construction industry in my country can truly reduce costs, improve efficiency, and expand scale.

As my country is developing a low-carbon economy, this low-carbon, environmentally friendly, and green ecological concept has been integrated into the entire construction industry. Many construction industries across the country have begun to pay attention to the exploration and improvement of the construction technology of prefabricated concrete structures for house construction, and gradually form construction technology with Chinese characteristics. This has added new impetus to the overall development of the construction industry and the development of social economy.