At present, dry hanging stone has occupied a considerable proportion of building curtain wall, and has a rising trend year by year. Facing the rapid development of dry stone hanging, the domestic stone dry hanging method has less reserve, the production unit lacks technical specifications, and the technical quality of construction personnel The bottoming of the project has caused many safety hazards in the construction of the project. This article elaborates on the more prominent safety hazards in the construction of stone dry hanging, to the staff of the stone curtain wall.
Nowadays, walking on the street can be seen everywhere with stone as the curtain wall of the exterior wall decoration of the building. With its unique style and elegant and beautiful shape, it makes the building more contemporary and artistic. It has become a modernization of urban architecture. One of the important signs. The current so-called stone curtain wall, in the true sense, belongs to the dry hanging stone finish. It can also be called a new construction process that uses the connecting piece to install the facing stone on the surface of the building. It can be controlled by the construction environment, reduce wet work, improve construction efficiency, and has good decorative effect, reduce the weight of the building, and overcome the disadvantages of cement mortar binder on stone penetration.
Design processing is not clear
In the dry design of stone slabs, due to the lack of relevant technical information and materials, the truly advanced construction methods and pendant products cannot be designed and adopted without reference, so they still use the pin-type method that has been eliminated by the market or only in the drawings. In a certain part, the implementation of the stone hanging shall be carried out, and then the construction party shall arrange the operation method by itself, resulting in the non-drawing basis to be handled arbitrarily during the construction, and the supervision and acceptance shall be passed and the safety hazard shall be generated. Nowadays, there is a national standard atlas approved by the Ministry of Construction, “National Civil Building Engineering Design Technical Measures†and “General Atlas of Building Structures†jointly edited by North China and Northwest Architectural Design Standardization Office (outside 88J-1 decoration <1 〉Based on two standard atlases, it can completely solve the passive situation of design without reference, and it can be of great significance for popularizing and applying advanced dry hanging method.
Unreasonable material selection
The selection of stone dry hanging engineering materials shall be strictly in accordance with the drawings and in accordance with the requirements of “Technical Specifications for Metal and Stone Curtain Wall Engineering†(JGJ133-2001), but individual construction units use inferior materials to reduce the cost and shoddy, especially Dry hanging pieces and dry hanging glue are the most prominent. Replace the GB 304 stainless steel or 7075 aluminum alloy pendant with the "rust iron" welding head dry hanging piece by demagnetization treatment, and the tensile strength of these three kinds of pendants are: GB 304 stainless steel 530?|620Mpa, 7075 aluminum all gold 540 ?|560Mpa, and "stainless iron" is only 160?|180Mpa, its strength is still less than 1/3 of stainless steel. It is not appropriate to use it as a dry pendant. If there is a problem, who is responsible? Again, the design time board The gap between the plate and the plate is usually 6mm, 8mm or 10mm, but during the installation process, since the thickness of the dry hanging piece is 4?|5mm, the gap between the plate and the plate is made of nuts, gaskets, etc. Adjustment, resulting in cumulative load, such a hard contact, will have terrible security consequences in the case of vibration and temperature changes. It has been a mistake to use strong rubber glue instead of stone dry hanging glue in the construction process for a long time. The strong glue is the glue between the stone and the stone. It is used for bonding between stone and metal. Scientifically, its bond strength is much weaker than that of stone dry glue, and it does not meet the specifications of the industry standard "Epoxy Adhesive for Dry Hanging Stone Curtain Wall" (JC887-2001).
Construction management is not standardized
Whether the construction site management work is good or not directly reflects the quality of the project manager. The chaos of management will inevitably lead to work cuts, more use, material loss, fake public interest and other phenomena, which will directly affect the progress and quality of the project, and will be buried under the invisible Many security risks.
As a project manager, you should fully recognize your responsibilities and should have six qualities: first, professional knowledge and practical experience; second, work ethic and responsibility, mission; third, mature and objective judgment. The fourth is the ability to organize and manage; the fifth is to be consistent in words and deeds and lead by example; the sixth is energetic and hard-working.
Project management runs through all aspects of the project. A slight flaw will have different degrees of impact. Standard management is to implement various rules and regulations, strictly perform duties and ensure the quality of the project, and then become a qualified project manager. .
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