五隆兴科技发展有限公司Part of the permanent facilities and temporary facilities involved in the construction of the project shall be constructed at one time. After the completion of the project construction, they can be directly put into use after partial transformation or no transformation, so as to achieve the purpose of use function.
Content of permanent temporary combination
The “combination of permanent and temporary” on the construction site is generally divided into two categories: hydropower installation and civil engineering: (1) the “combination of permanent and temporary” of civil engineering generally includes the combination of permanent roads and temporary roads, the combination of permanent and temporary outdoor facilities, and the combination of permanent and temporary of enclosure; (2) “Permanent temporary combination” of installation works generally includes permanent temporary combination of fire water supply, floor lighting, municipal water supply and drainage, etc.
Application example of permanent temporary combination
In the construction of a project undertaken by our unit, a series of permanent temporary combination measures have been taken, and good benefits have been achieved. The specific construction permanent and temporary combined facilities are as follows:
Permanent temporary combined construction of formal enclosure and temporary enclosure of the project
Beijing No. 8 middle school covers an area of about 40000 square meters, and the length of all temporary enclosures for construction reaches 760 meters. At the beginning of construction, the project department actively communicates and coordinates with the construction unit and the Design Institute, and defines its enclosure construction practices in the joint review of drawings; The 452m formal enclosure foundation and column with conditions shall be constructed first, the fence part shall be reserved, and the reusable color steel baffle shall be installed at its position. This method combines the foundation of the formal enclosure and the temporary enclosure with the column forever and temporarily, meets the requirements of dust control in Lanzhou, creates favorable conditions for the early resumption of work, and the construction is formed at one time, saving about 120000 yuan; At the same time, some formal fences have been constructed, which also reduces the progress pressure for subsequent outdoor construction.
Construction of permanent enclosure column
Construction of permanent temporary combined enclosure
The teaching building and dormitory building of the project are designed for vibration reduction and isolation. During the structural construction, the cushion construction of the isolation ditch will be completed as the ground scaffold foundation for the construction of the main structure. The safety factor of the floor scaffold is improved to prevent uneven settlement and deformation of the scaffold body. At the same time, it achieves the effect of beauty and dust reduction.
隔震沟垫层设计
Requirements for permanent temporary construction
Strictly control the quality of materials
In the construction of permanent temporary combination, the quality of materials used shall be strictly controlled. The construction materials shall be in accordance with the material quality requirements of permanent facilities. At the same time, it is necessary to avoid damage and pollution to permanent facilities during use, so the general water supply pipe is not used as permanent and temporary combined water supply.
Do the preparatory work well
In the process of construction, in order to realize the combination of permanent and temporary, the design intention and use function of the project must be familiar with. On the basis of in-depth interpretation of the design, the planning and implementation of the combination of permanent and temporary construction are carried out. Avoid hasty construction due to unfamiliar design. Finally, the permanent facilities can not reach the designed use function, resulting in rework and waste.
Grasp the key links in the construction process
First of all, the main construction process must be strictly controlled, and all permanent temporary projects must perform the acceptance procedures. Construction can only be carried out after passing the acceptance.
In the process of construction, there are many construction links, each of which has a great impact on the construction progress and construction quality of the whole project. Therefore, in the specific construction, we should also pay special attention to the following two points: first, part of the system of the project under construction at this stage is subcontracted by Party A, that is, the temporary facilities need to be constructed after mobilization, However, most of the professional subcontractors enter the site late. If this technology is to be adopted in the specific construction, it is necessary to effectively communicate with the supervisor, the owner and the potential subcontractor of Party A before construction, and leave relevant materials that can be proved in the process of communication, When the project is handed over later, it will avoid the occurrence of later handover wrangling. Second, not the whole temporary system can realize the combination of permanent and temporary. Therefore, in the process of construction, it is necessary to plan the transformation of temporary facilities to formal facilities, so as to avoid affecting the progress of project construction due to lack of connection.
Common problems of permanent and temporary combination
There are two common problems in the construction of permanent temporary combination: (1) the construction of permanent temporary combination cannot be carried out on time due to unclear design; (2) Construction cannot be carried out because some subcontractors cannot enter the site on time.
In view of the above problems, in the process of permanent temporary construction, it is necessary to plan in advance, communicate with the design in advance, and communicate and coordinate with the construction unit, so as to create conditions for permanent temporary construction.
Due to the demand for temporary water in the construction in progress and the requirements for safe and civilized construction, temporary fire control and environmental protection, we have higher requirements for temporary water, temporary fire control, construction land, dust reduction and flushing of vehicles entering and leaving the construction site, so we need to invest more in these aspects to achieve the expected purpose.
If we apply the permanent temporary combination system, we can not only solve the above problems, but also save a large amount of investment in facilities and speed up the construction progress, which can be described as “killing three birds with one stone”. In the process of specific project construction, it is recommended to use “combination of permanent and temporary” in group projects and high-rise buildings, which can not only meet the needs of various temporary facilities at the early construction site, but also meet the requirements of green and civilized construction, so as to greatly reduce the construction cost and provide convenient conditions for the construction site on the basis of cost saving, Finally, it provides effective technical support for the construction of the project.
Source: Luban union of Construction Engineering
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