Many people have expressed very little about the transformation of the house and are very unfamiliar. The transformation of the house is based on a series of construction transformations on the basis of the original house, so that the table or re-shaping the original building. The more important thing in the housing reform is the reinforcement. The main purpose of the house reinforcement design is to ensure the safety of the house. If the house is not reinforced in the process of construction or renovation, the safety of the house when it is inhabited may be worrying, so usually we are building it. Or the fact that the house is renovated tends to focus on the problem of house reinforcement. Today we have an understanding of the design method of the old house reinforcement and reconstruction and the precautions for building reinforcement.
Old house reinforcement transformation design method
1. According to the total number of floors and the total height of buildings after the addition of layers, use the requirements of the building seismic resistance appraisal standard to add earthquake resistance appraisal and seismic design to the old house parts: carry out seismic design for the new part. The reasons are: appropriately relax the seismic requirements of the additional storey houses, minimize the reinforcement work of the additional storey houses, so as to facilitate the reduction of the construction cost, and the additional store construction should not affect the use of the old houses as far as possible.
2. The reinforcement and reconstruction of the old house shall be reinforced with seismic resistance and seismic design of the building using the requirements of the seismic appraisal standard for the building, and the seismic design shall be carried out for the requirements of the seismic design code for some buildings used in the new house. The reason is that the old house has become a fact and it is difficult to reinforce it completely in accordance with the requirements of the seismic design code for buildings. Therefore, it should be appropriately relaxed. The design of the new house in accordance with the requirements of the building seismic design specification is not difficult, it is not relaxed.
3. The renovation of the old house shall use the requirements of the building's seismic design code to add earthquake resistance appraisal and seismic design, and carry out earthquake-resistance design for the requirements of the new house's part of the building's seismic design code. The reason is: to make the old and new parts of the house added seismic capacity match.
4. The renovation of the old house shall be supplemented with the requirements of the building's seismic design code for additional seismic evaluations and seismic calculations, improved measures for once taken seismic construction, and seismic design for the requirements of the new partially used building seismic design code. The reason is: Considering that there are many unfavorable factors in the earthquake resistance of old houses, we must take more measures.
5. Based on the design code for seismic strengthening of buildings, and referring to the requirements of the seismic appraisal standard for buildings, the seismic appraisal and anti-seismic design of the house with additional floors are performed. The reason is that the combination of the two standards is more realistic and reasonable.
6. Differentiation and treatment of old houses shall be treated differently. When the old houses are designed according to the seismic design code of the new building, the new and old parts shall be evaluated strictly in accordance with the requirements of the seismic design code for new buildings, and shall be used for seismic evaluation and seismic design. When the house is designed according to the seismic design code of the old building, the new and old parts of the added house can also be subjected to earthquake resistance appraisal and seismic design according to the requirements of the old seismic design code. The reason is this: This will allow the new and old parts of the added-store house to be consistent in their earthquake resistance and more economically reasonable.
Although there are some favorable factors in adding a layer of reinforced house, there are more unfavorable factors. For example, the old part of the house has been used for several years for reinforcement and reconstruction, and the integrity of the old and new parts of the connection is poor. It is not advisable to adopt a design lower than that of the newly built house when the layered house is reinforced. standard. If a higher design standard than a new house is used, more investment will be required, which will increase the amount of construction and the difficulty of construction for reinforcement of the additional floors, making it difficult to implement. Adopting the same design standards as the newly-built houses is in line with China’s national conditions. It is more economical and reasonable, and the degree of safety is also guaranteed. According to the survey, most of the existing multi-storey houses in China are doing so. The monographs published by China regarding the transformation of old houses (including layers) also advocate designing and calculating according to the standards of current design standards. Since the bearing capacity of the old house should be designed and checked according to the design criteria, the earthquake resistance appraisal of the old house (including the distance between the seismic wall, the structural column, the ring beams, the total height of the house, the total number of floors, the aspect ratio Limits, local size limits, etc.) should also be based on seismic design specifications.
The old house reinforcement transformation should pay attention to what matters
The dilapidated houses we discussed are all repaired and targeted. If a column is in danger, it will cause danger to the entire building or part of the house. When repairing, it should take measures to repair the pillar. If the beams, columns, walls and foundations of a house are all dangerous, then It is necessary to carry out comprehensive repairs on this house to achieve the purpose of reinforcing the entire house. The reinforcement of the hazardous components has been mentioned separately. Here, the emphasis is placed on the reinforcement construction techniques for the repair of all dangerous buildings.
Improve the strength of housing components. The danger of a house is due to the reduction of the strength of some components, and its emphasis should be placed on the reinforcement of the components. For example, increase the cross section of components, replace some of the components, change the properties of Bodhisattva (refer to help the house to reduce the load), and also adjust the load distribution of the house and increase the bearing capacity of the components.
Improve the rigidity and stability of the building components and increase the overall rigidity and stability of the house. Some components of the house are not stable or rigid enough to make the house dangerous.
If the slenderness ratio of the column is too large, the deflection of the beam is too severe, the large eccentric compression member has excessive bending deformation, and the joint between the wooden roof frames is not strong, so that the inclination of the house should be increased to increase the cross section of the member. The middle fulcrum reduces the calculation length. Reduce the member eccentricity and other methods to enhance the stiffness and stability of the components. If the danger of the house is caused by improper space support or due to the failure of the support connection, the support system should be replaced and adjusted to enhance the reliability of the connection.
House reinforcement precautions
1. The issue of the rationality of reinforcement must be taken into consideration when carrying out the housing reinforcement design. No matter whether it is a partial reinforcement treatment or the reinforcement of the whole house, it should not be ignored in the issue of rationality, and the reinforced building materials used must also meet the relevant safety standards and quality standards, otherwise it will not reach the expected reinforcement. The effect is. This is the first issue that we need to pay attention to when we carry out house consolidation.
2, in the reinforcement design of the house should also pay attention to the problem of reinforcement design of the construction cycle, in the construction process as far as possible without spending too much time, improve efficiency can shorten the time required for housing renovation or construction, engineering The progress will be faster, but it will not be able to be wasted during the reinforcement process. The quality of work must be guaranteed.
3. Some details of housing reinforcement design cannot be ignored, such as the use of building materials, selection, and technical operations in the construction process during the reinforcement design. Although these problems may seem trivial, they are directly related to Reinforce work quality, safety and other issues. Therefore, some seemingly ordinary trifles cannot be ignored when carrying out reinforcement design.
Editor's summary: The above is related to the design methods of the old house reinforcement and transformation and the precautions for building reinforcement. I hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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