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The characteristics of strengthening buildings with externally bonded profiled steel
1. The construction is simple and fast, and the section size and weight of the reinforced members are basically not increased.
2、 steel plate The end anchoring is very important, and it is easy to tear off if it is not properly handled, which belongs to brittle failure.
3. The thickness of the reinforced steel plate is 6mm, which meets the specification requirements according to the design, and the wrapped steel method is adopted.
4. When the base course temperature is below 5 ℃, the steel bonding method shall be supplemented with temperature rise measures to speed up the curing.
5. The steel plate of reinforced column shall be wrapped with steel. This method is often used in story adding and seismic strengthening.
Scope of application
1. It is applicable to general flexural and tensile members subject to static action.
2. The use environment temperature shall not exceed 5~60 ℃, the relative humidity shall not exceed 70% and the use conditions without chemical corrosion shall be limited, otherwise effective protective measures shall be taken.
3. When the concrete strength grade of the component is lower than Cl5, this method should not be used for reinforcement.
Process principle and design regulations
1. External bonded profile steel and steel board The material strength grade is Q345B.
2. When the column is strengthened with externally bonded profiled steel, the corners of the original component section shall be polished into rounded corners with a radius of r>7mm.
three Angle steel , batten plate, Flat steel The gap between the connecting plate and other steel members and the original member is filled with adhesive to make it integrated.
4. Glue injection shall be carried out after the welding of profile steel frame is completed, and the thickness of glue seam should be controlled within 3-6mm; It is allowed to have glue joints with a length of no more than 300mm and a thickness of no more than 8mm locally, but they shall not appear within 600mm of the end of the angle steel. The adhesive shall be Grade 3A adhesive.
The large Dong and Miao villages in China are located in southeast Guizhou, and Kaili is the capital of the prefecture. Kaili has a history of 500 years. As early as the Ming and Qing Dynasties, it was known as "Little Jingzhou". For hundreds of years, people of all ethnic groups living in Kaili have created brilliant national culture with their wisdom and diligence.
In addition to the ethnic customs and cultural relics with a simple style and unique features, Kaili's natural scenery mainly includes Xianglu Mountain, Jinquan Lake and a number of unique karst caves. Kaili has hundreds of national festivals every year, so it is also called the "Hometown of Hundred Festivals". Qiandongnan is gorgeous in the festival, and the special folk customs are intoxicating.
Jiehe Reinforcement Co., Ltd. is specialized in structural reinforcement, bonded steel reinforcement, planted bar anchorage, bonded carbon fiber reinforcement, crack grouting wall It is a high-tech enterprise integrating research, development and construction of hole opening, water stop and leak stoppage, structural earthquake resistance, concrete interface treatment, building storey adding and nondestructive demolition.
Jiehe Reinforcement has been engaged in the reinforcement industry for more than 20 years, has constructed more than 1000 difficult construction projects in China, and has established its technical position in the same industry. The backbone of Jiehe reinforcement technology is mainly composed of senior engineers, professors and doctors in engineering mechanics, civil engineering, water conservancy and hydropower engineering, and has professional construction teams and advanced construction equipment. The project scope involves industrial plants, civil buildings, water conservancy and hydropower projects, dams and tunnels, ports and docks, roads and bridges, etc.
Jiehe reinforcement personnel always follow the business policy of "quality first, honest cooperation, science and technology, and enthusiastic service". The company will continue to improve the quality of construction projects, create high-quality reinforcement projects, and establish * * *!
The above is the experience summary of Kaili external steel reinforcement project - Jiehe reinforcement. If you need to find a reinforcement engineering company, you are welcome to contact anyone interested!
