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Application analysis of aluminum alloy formwork in high-rise building construction

Oct 08, 2024

1.make preparations before construction. To do all kinds of previous preparation work is conducive to ensure the normal installation and use of the template:

1.1 before the installation of the template, must complete the acceptance of steel bars and hidden projects such as pre-embedded;

1.2 In order to ensure that the formwork can be correctly installed, the construction personnel must accurately measure whether the elevation of this layer is in the control range, if it is beyond the range, need to do the corresponding treatment;

1.3 the construction staff to the construction site of the aluminum alloy template model, accessories and the number of inspection, check whether the template is complete, adequate, etc.

1.4 before the installation of the template to clean the surface of the template, and in the panel coated with a layer of water-based isolation agent to ensure the quality of the project.

  

2.install the template properly.

To give full play to the performance and role of the template, the first thing the construction personnel must do is to install the template reasonably. The template installation process to follow the following principles: "First wall column, after beam plate", "First non-standard template, after the standard template. 1 do a good job of wall column template installation. Workers from all the template to find the corresponding number of the template, and then its surface cleaning, and coated with water-based isolation agent. In this process, to ensure that the template installation elevation and structure elevation matching, and then the template will be fixed with pins and kicking template. After installation, check the verticality of the template and make appropriate adjustments. 2 perfect the installation process of beam formwork and plate formwork. According to the relevant requirements of construction drawings, the constructors first put the bottom plate of the beam formwork on the gap left by the column formwork, and install the vertical pole to ensure its stability. Then the side of the beam template installation, in the right place to install some corner template. Once all vertical formwork has been installed and the verticality checked, the floor keel and support system will be installed. Install floor formwork from one end of the room in sequence. After each construction unit has been installed, its elevation and flatness can be measured by level equipment. For the template system with deviation, it can be adjusted by adjusting the support control, so as to meet the design requirements. In addition, the construction personnel should also pay attention to the installation of the hole formwork, give full play to the performance of the formwork. It is worth noting that when each construction unit elevation and flatness adjustment is completed, the entire floor of the high-rise scope of the building to carry out a flatness and elevation check. In this way, after checking in the vertical template on a special square steel back and fixed with high-strength bolts.

 

3.Improve the concrete pouring process of high-rise buildings.

Before pouring, to check the interface gap, if the requirements exceed the requirements, must paste the foam plastic strip to prevent leakage. Because of the particularity of the material, the permeability of all-aluminum alloy template is poor. Therefore, the concrete in the bubble is difficult to discharge, improper treatment will lead to the formation of pitting concrete surface. This requires technical personnel to optimize the mix ratio of concrete, reduce the production of air bubbles, and at the same time strengthen the vibration of concrete pouring process, avoid leakage vibration, vibration time caused by a short local bubble is not exhausted. After the completion of the casting, the construction unit to arrange a special person on duty to guard the mold, to prevent the template sinking or rising mold situation, affect the smooth progress of the project.

 

4.Template removal.

1 demolition condition. For the dismantling of aluminum alloy formwork, in addition to strictly comply with the relevant standards, but also to ensure that the action in practice to meet the established strength control requirements. For example, when the aluminum mold in the early dismantling system, the relevant personnel to control the pouring strength of its structure, that is, by retaining the support bar to carry out structural stability control. In this process, demolition operators should be based on the pre-set position conditions, to determine the support rod demolition time; 2 demolition process to determine. The wall column side form must first be removed, because only in this way, after the strength of the concrete structure reached the standard, to carry out the action, so as not to cause an impact on it.

 

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