What is the construction process of building formwork erection
Building formwork erection is an important link in building construction, and the standardization and accuracy of its construction process is directly related to the project quality and construction safety. Next, let's have a detailed understanding of the construction process of building formwork erection.
First of all, the preparation work before construction is very important. This includes formulating detailed formwork construction scheme and formwork matching plan, and ensuring that these plans have been disclosed to all relevant personnel. At the same time, the formwork shall be made according to the setting out size, and the height difference between the two adjacent formwork surfaces shall be controlled within the specified range to ensure the accuracy and stability of the formwork.
Next, prepare and inspect the formwork materials. The formwork materials must meet the requirements of the construction scheme and specifications. After painting the release agent, they shall be stacked by number and classification. It must be cleaned up before the second turnover to ensure the reuse effect of the template.
Then, according to the construction drawings, snap the column sideline and control line. This includes snapping the horizontal and vertical axis, column sideline and control line, and using specific marks on the column axis, such as the red "△" mark with 50mm side length, and marking the word "axis". For the column edge line, the ink line is used to pop up the frame line along the designed column edge position, and the two ends of the frame line are extended by not less than 20cm respectively for inspection of the hanging line.
Then, the concrete surface laitance shall be chiseled. The chiseling depth shall not be less than 5mm, the spacing of chiseling points shall be controlled within 20~30mm, and the chiseling shall cover the whole range within the column sideline. The removed laitance residue shall be cleaned in time and washed with water to ensure the cleanness and roughness of the concrete surface.
Next is the installation of the template. First, install the column formwork, including erecting and installing the scaffold, pasting the lining along the edge of the formwork, erecting the cylindrical sheet formwork, installing the column hoop and other steps. Then install the beam formwork and top plate formwork, including snapping the beam axis and transverse line, erecting the beam formwork bottom plate, and installing the beam bottom edge and beam bottom formwork. During installation, ensure the flatness and stability of the formwork and the tight connection between the formwork.
After the completion of formwork installation, it is also necessary to carry out concealed works acceptance, concrete pouring, maintenance and other follow-up work. Before pouring concrete, the formwork shall be comprehensively inspected for the last time, and pouring can be carried out only after it is ensured to be correct. Pay attention to the uniformity and compactness of concrete and the deformation of formwork during pouring.
Finally, when the concrete strength reaches the specified requirements, the formwork shall be removed. The demolition shall be carried out in accordance with the principle of first supporting and then dismantling, and from top to bottom, so as to ensure the safety and smoothness of the demolition process.
The construction process of building formwork erection is a complex and delicate process, which requires the construction personnel to operate in strict accordance with the specifications and requirements to ensure the project quality and construction safety.
