Plastic deformation characteristics and resistance of steel structure are introduced

The plastic deformation and endurance of steel structure make steel structure not easy to crack suddenly due to excessive load. It is other construction raw materials, especially concrete construction can not be compared. Now, China's high-rise residential construction regulations are relatively high, because in the construction, the main consideration is hidden dangers. In particular, the lethality of earthquake disasters will make the deformation of the building torn and collapsed, and the endurance of steel structure construction just can cache the energy. Therefore, steel structure is chosen as the main behavior of high-rise residential construction because its practical effect is very good.

The compressive strength of steel structure itself is relatively large, mainly the compressive strength and tensile strength. From the data information: the compressive strength of stainless steel plate can reach 345Mpa, and the compressive strength of concrete is less than 10Mpa; The tensile strength of steel structures can reach over 200 mpa, while concrete can reach 100 mpa.

Common reinforcement methods to increase the section mainly include: increasing the height-width ratio of the section, thickening the flange plate, changing the section into a box section and so on. The main way to enlarge the section of steel structure is to stick steel or carbon fiber cloth. These two methods have relatively little damage to the structure itself, and the development trend in China is relatively fast in recent years, and their application is slowly increasing. However, there is little relativity in the application of steel structure reinforcement, especially in normal application, there are still problems in the application life. Moreover, the engineering construction difficulty coefficient of steel or carbon fiber materials is relatively large, and the original structure surface can be solved, ground off, and moistened before sticking. Structure to accept driving force load or high temperature is likely to produce glue. Outside body prestressed strengthening technical way, is refers to the prestressing tendon layout in the cross section structure of prefabricated reinforcement, according to the change of the structure of the power transmission way to reduce the load utility of prefabricated in the structure of the original basically improve the bearing capacity of the structure, the deformation characteristics of the structure is improved to reduce component of ground stress, It can damage the original technical function of engineering project structure, and then consider the requirements of new bearing standard and application function. The structure is composed of prestressed steel bars, pipes, paint, turning blocks, steel anchoring system software and other components.