In order to reduce the construction difficulty,cost,construction duration and water seepage risk of positive section bearing capacity reinforcement of beam supports in basement roof beams,this paper analyzes three increased section reinforcement forms that do not involve the construction of the top of the beams to increase beam width.It is found that the three reinforcement forms have a greater increase in the positive section bearing capacity of the beam supports,and the increase is the greatest in the consideration of the redistribution of the plastic internal force after the addition of longitudinal reinforcement to the bottom of the beams,and there are some bearing capacity enhancements in the way of increasing negative reinforcement at the bottom of the slabs in comparison to the method of not adding steel bars at the bottom of the slab.
关键词
地下室顶板梁/正截面承载力/增大截面法/支座
Key words
basement roof beam/normal section bearing capacity/method of increasing the cross-section/beam support
维普
万方数据