Method for making pressure bearing member of reinforced concrete

Abstract

The invention relates to a method for strengthening concrete compression members, which includes wrapping fiber reinforced plastics (FRP) around the compression members, then affixing and pressing section steel on the fiber reinforced plastics (FRP) and connecting them with concrete by fasteners. The compression member is connected as a whole. The present invention adopts the joint action of fiber reinforced plastic (FRP) and section steel to greatly increase the bearing capacity of the compression member, and also improve the ductility, integrity and reliability of the compression member. Experimental studies have found that two materials, steel and fiber-reinforced plastic (FRP), are used to strengthen concrete axial compression members. The two materials can not only work well together, but also significantly improve the mechanical properties of concrete compression members. The bearing capacity is greatly improved, and the ability to resist deformation is greatly enhanced. The invention not only has a good reinforcing effect, but also can greatly reduce the engineering cost and reduce the engineering investment cost by about 40%, so it has wide application prospects.

Description

technical field [0001] The invention relates to a method for strengthening concrete compression members. Background technique [0002] China has a huge construction market. In industrial and civil buildings, due to design and construction defects and factors such as damage, aging and disasters in the long-term use of many concrete structures, a considerable part of the components are cracked, the seismic performance is poor, and the bearing capacity Insufficiency and many other problems that affect safety and usability need to be reinforced. In addition, due to the requirements of adding floors to the building structure, the bearing capacity of the original structure is insufficient, and some method is needed to greatly increase the bearing capacity of the components. [0003] The usual reinforcement method for concrete compression members is to use newly poured concrete to increase the column cross-section or adopt outsourcing steel reinforcement method. The method of enl...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign studies on the reinforcement performance of reinforced concrete columns are mostly focused on the stress-strain relationship, bending moment-curvature relationship, improvement of shear and bending resistance, seismic performance and ductility performance of a certain material after reinforcement. However, there are few studies on the situation of multi-material composite reinforcement.

Images