What Are the Precautions During the Construction of the Curtain Wall? -Ruminum Profiles Supplier

As an important part of the building, the building curtain wall is the organic combination of architectural technology and art. In our country, the building curtain wall has developed more than 20 years, and the technology of building curtain wall has become increasingly mature. Different periods, buildings have different requirements for curtain walls. At present, the construction curtain wall technology has been basically mature, but the curtain wall construction still encounters some problems.

1. Several problems in the curtain wall construction

(1) Quality Guarantee Materials The problems encountered in the materials are during the construction process. If there is no quality assurance information, there will be a lot of hand tails to be processed. Some smaller construction units have no quality assurance information at all. This is perfunctory. As a result, there is a serious difference between the facts and quality assurance information of the project. During the construction process, the construction unit may not be provided to the construction unit due to incomplete quality assurance data, which affects the construction cycle.

(2) Installation problem A. The waterproof of the building curtain wall is based on the relevant indicators. The building curtain wall should have a waterproof seal of 3.5mm to 4.5mm, and the surface of the sealing layer should be kept smooth.

If the seal layer is too thick, the stretching force will weaken. If the seal layer is too thin, the leakage or seal effect will be reduced. Not only the thickness of the sealing ring, if the sealing ring is not uniform, it will also have a certain impact on the quality of the project. B. The connection method often used when connecting to the curtain wall is: embedded components or using expansion bolts.

If the position of the components in advance in advance is not followed, a secondary embedded phenomenon may occur during the construction process, and the distance between the bolt and the center of the column may lead to unstable connection.

(3) The major issues in the construction of the building curtain wall In the process of procurement materials, the unnecessary quality proof of purchasing materials often occur, which will bring additional difficulties to inspectors when checking and classifying purchases. The construction of the curtain wall involves many materials.

If the quality of the hardware and bolts cannot be guaranteed, it will be the main safety hazards in the project.

In addition, if you do not confirm the adhesives used for the engineering structure when buying, the impact on the project will be irreversible.

Because there are many types of glue, the method of use is different. Some need to test first and then glue; some need to be pasted first before testing. Without adhesion reports, it is impossible to determine how to use it.

2. Optimized measures for the construction of the curtain wall

(1) In the early stage of construction, the preliminary construction process is formulated according to the specific projects. Examine the quality system of the construction unit. These reviews include: construction qualification review, personnel qualification review, management level review, etc. Key inspections of key projects. In the project, the key part should also be reviewed. Only technically explain the difficulties and nodes in the construction process, and it is also ready to communicate with the construction personnel at any time. When reviewing the construction plan and construction plan of the construction unit, special attention should be paid to the review of the procedures and safety measures that have important impact on construction quality.

If necessary, on the basis of the "three" censorship of the drawings, the specific content of the review is: whether the drawing has been reviewed by the drawing requirements and design standards, whether it is safe, whether the economic benefits are achieved, whether it is reasonable, etc. In the initial stage of material procurement, procurement must be strictly followed by current national regulations. Only qualified procurement materials can ensure the safety of curtain walls.

If the material purchased is a metal material, the surface should be polished and galvanized; if the purchased material is made of aluminum alloy, the surface needs to be performed on the anode and cathode solidification.

In addition, due to errors during the layout, the position of the embedded parts will be affected.

For example, when the position of the embedded parts has a large deviation, it will not be reliable to form a reliable connection with the keel on the curtain wall.

(2) The modern curtain wall of the lightning protection system and the construction of the curtain wall is mainly composed of metal objects. Its good conductivity makes it easy to receive lightning strikes.

Although the maintenance facilities of the main items are well installed, lightning can be introduced into the underground CFG pile foundation. However, after the curtain wall maintenance, due to the shielding effect of the curtain wall, the original lightning protection device will not play the original lightning protection effect. According to the specified specific requirements, the lightning protection device of the metal curtain wall should be designed to make full use of the existing equipment of the building. The beam of the pillar can be connected to the building's lightning protection network to form a whole, which can be used for buildings and curtain walls. Two protection.

Therefore, when the curtain wall is used for lightning protection, an equal potential connection should be used to reduce the potential difference caused by lightning current. For buildings, it can not only effectively prevent direct lightning strikes, but also effectively prevent lightning strikes.

In addition, if the height of the curtain wall is greater than 30m, one average pressure ring should be installed every three layers.

In addition, the following points should be paid attention to in the structure of the curtain wall:

To prevent the virtual connection column from appearing at the connection between the upper and lower columns, the omega -shaped card should be used for connection. The -shaped card is bent with 4mm thick and 60mm wide -galvanized flat steel. Formation; the contact surface should be removed from the galvanized layer, and it should be connected and fixed with a bit high bolt.

If you want to connect the columns that need to be grounded, pay attention to the connection between the columns and the embedded parts between the columns and the corner. At this time, the pads need to be removed, and the protective layer needs to scrape off the conductive glue on the surface, and finally apply the conductive glue to the surface.

(3) The main body of the waterproof treatment of the curtain wall forms an organic whole and the top of the curtain wall. At this position, the air terminal equipment must be installed. When the air terminal device passes through the top, water seepage will occur if the glue is not sealed correctly. This is the construction process of the stone curtain wall. It is necessary to prevent the pollution of stone dry glue from cross -section of stone.

If pollution occurs, please clean the stone in time before using weather -resistant plastic sealing stone to prevent water seepage from being caused by the incompatibility of the two colloids.

In addition, as the construction is carried out, water spraying experiments should be carried out in sections, and a layer of water film is formed on the surface of the curtain wall. After the inspection, it is determined that there is a missed leak before continuing construction.

(4) Supervision and construction unit Establish a technical security system. During the construction process, the supervision unit shall send a special person to the acceptance of the quality of the project. If there is a problem in the acceptance process, communicate with the on -site construction staff in order to solve it in a timely manner.

For example, during the inspection and acceptance of project nodes, inspectors cannot perform their duties well. After the inspection is completed, the quality management personnel and supervision departments need to conduct a second inspection to ensure the construction quality of the curtain wall.

Due to the particularity of the building curtain wall, the method of "prevention -oriented, controlling the second" should be adopted to prevent problems that may occur during the construction of the curtain wall. As long as the employees are responsible for work and adopt a positive and effective prevention method, they can achieve the goal of fundamentally improving the quality of the curtain wall.