The problem of building beams needs

The problem of building beams needs to be modified in the design, and at the same time, the section height of the beams needs to be clearly calculated. Because once the height of the beam is too small, the stress in the compression zone of the beam section will be too high, resulting in nonlinear deformation of the beam section in the compression zone. As time goes by, the beam deflection will continue to increase, and the degree of bending will also increase. In the event of an earthquake, the ductility of the beam is easily reduced due to the excessive curvature, in other words As a result, the upper structure is extremely unstable, so that in the event of an accident, the upper part of the house will collapse. In addition, there is also a situation in which single beams are used to replace continuous beams in the building design. The role of a single beam is confused with that of a continuous beam. Under different ambient temperatures and other conditions where the load is heavier, the amount of negative rib configuration of the beam support will be reduced. Therefore, the external environment will make the adaptability of the beam undergo a very severe test. Once the shrinkage exceeds the single beam The acceptable range will lead to cracks in the beam support, thereby reducing the bearing capacity of the beam and reducing its service life. This has the most direct impact on the safety of the occupants in the building.