03.

Preconditions for the transformation of existing residential buildings 1) pre assessment to meet the actual transformation needs.

Among the various problems reflected in the transformation of old buildings, the main problem is that the building use function can not meet the needs of human and social development.

02.

With the passage of time and social progress, people have more strict requirements for building functions.

Ideas for the transformation of existing residential buildings 1) the transformation principle of existing residential buildings focuses on the transformation of existing building functional space.

The transformation of building functional space must be carried out systematically in combination with the actual situation and use demand of existing buildings.

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Investigation on the current situation of existing residential buildings 1) background investigation on the stock of residential buildings data from 1978 to the end of 2017, the stock of urban houses in China has rapidly increased from less than 1.4 billion m2 to 26.7 billion m2.

Transformation purpose starting from the transformation purpose of the target population of the main body of the transformation building, analyze the current situation and conditions of the internal and external environment of the building and the flexible infrastructure of the transformation space, investigate the living characteristics and use habits of the people in need, and collect basic information about age level, family structure, occupational characteristics, educational background, lifestyle, economic ability and so on, Analyze the feasible reconstruction needs of the prediction subject and the requirements that cannot be met due to objective factors, communicate and eliminate them, determine the list of requirements that can be implemented, and form the task statement of existing building reconstruction.

The transformation of existing residential buildings is urgent.

Evaluate the aging and damage degree of the existing structural system, and determine whether it is necessary to strengthen or repair the structure.

Most existing residential buildings can no longer meet the current use and living needs.

Therefore, the transformation of existing building functional space must be combined with investigation and analysis, demand assessment and other contents to determine the final transformation scheme of functional space.

According to the calculation of the average construction area of urban households in China of 89 m2, the number of urban residential units in China by the end of 2017 was about 300 million, calculated by the proportion of renovation demand of 2.6%, The number of existing houses to be renovated in cities and towns throughout the year was about 7.8 million.

The transformation of existing residential building functional space is an important link.

Among them, structural safety is the top priority to ensure the safety of buildings.

At present, with the continuous increase of new buildings, the scale of existing buildings is also increasing.

01.

Main body orientation # analyze the use nature of existing buildings, and determine the main body orientation of existing building reconstruction by combining the national and local policy environment, overall market situation, urban planning and development, building surrounding environment, supporting facilities and other information for the type of reconstructed buildings.

The earlier the completion time is, the more serious the housing degradation is.

Through practical projects, this paper discusses how to adopt the precast building technology in the way appropriate to the project, improve the existing building transformation technology system on the premise of principle, screening and guarantee, and carry out the application demonstration of precast decoration technology, so as to solve the application difficulties of the indoor space transformation technology of existing buildings.

2) meeting the transformation needs under objective conditions and meeting the transformation needs of the building environment, structure and functional space of the existing residential buildings are the key points of the transformation of the existing residential buildings.

If the structure is seriously damaged, it is necessary to evaluate the possibility of the implementation of the reconstruction scheme of existing buildings and the impact of the reconstruction construction on the building structure, The reconstruction scheme with little impact on the existing building structure is adopted to ensure the safety of the existing building.

According to the housing renovation cycle of 10 ~ 20 years, at present, a large number of old houses have reached the “replacement” period, accompanied by huge demand for renovation and decoration of old houses.

The transformation and reuse of existing buildings has become the most important link in the development of architecture in China.

It is proposed to improve the building environment, ensure the safety of the building structure and optimize the indoor functional space, and clarify the preconditions for the transformation of the existing buildings.

With the advancement of China’s building industrialization, the development of building construction technology provides innovative solutions for China’s existing building transformation, especially the application of assembly technology, dry construction technology and integrated design technology to space internal decoration transformation, so as to effectively solve the problems of building structure durability, humanized construction of equipment and facilities and environmental pollution in decoration operation.

The first batch of commercial houses in China were built in the 1980s.

In this link, the backward space that does not meet the use needs must be transformed into a functional space suitable for the current use needs in combination with the investigation of the current situation of existing buildings and the needs of users, Due to the new functional requirements after transformation, the existing building functional space must be recombined to change its sense of scale and make the function meet the needs..

2) problems existing in existing residential buildings: imperfect functions and unreasonable zoning; the design does not meet the current needs, lack of humanized design, aging structure; aging pipeline equipment; since the 1980s, due to the impact of housing positioning, social economy, construction technology, national policies and other reasons in different stages of social development in China, the existing residential buildings are in functional use There are a series of problems in physical performance, living environment, supporting facilities and quality degradation.

As an important input condition for the transformation of existing buildings, the accuracy and feasibility of pre assessment will directly affect the strategic direction of transformation technology, and determine whether the transformation meets the established objectives, timeliness plan, surrounding environment, reasonable compliance and other objective conditions, It mainly includes two parts: main body positioning and transformation purpose.

Therefore, in the transformation of existing buildings, how to make more rational use of the current conditions to meet the needs has become a new research topic.

With the progress and development of society, people are no longer satisfied with material needs, but pay more attention to spiritual and psychological needs.

According to the existing building indoor and outdoor infrastructure, relevant supporting facilities, physical environment and other current factors affecting the existing building environment, analyze and summarize, seek the deficiency of the existing building current environment, and put forward the transformation scheme of the existing building environment in combination with the building evaluation.

The primary condition for the reconstruction of existing buildings is to ensure the safety of existing buildings.