钢筋混凝土双向板在受到集中反力或局部荷载作用下,需要对板进行受冲切承载力的计算。这种情况在实际工程中经常遇到,例如无梁楼盖、柱下基础、桩基承台等,都需要作板的受冲切承载力验算。钢筋混凝土板在集中反力或局部荷载作用下的破坏有两种可能;(一)对高跨比较小或配筋率较低的板,一般发生弯曲破坏。(二)对高跨比较大或配筋率较高的板,一般发生冲切破坏。对于前者,我们在过去介绍受弯构件承载力计算时,已作 For reinforced concrete two-way slabs under the action of concentrated reaction or local loads, it is necessary to calculate the punching bearing capacity of the slabs. This kind of situation often encountered in the actual project, for example, beamless floor, pillar foundation, pile foundation, etc., all need to make the board’s punching bearing capacity check. There are two possibilities for the damage of reinforced concrete slabs under concentrated reaction or local loads; (1) Generally bending failure occurs for slabs with a relatively low high span or a low reinforcement ratio. (b) Punching is generally carried out on plates with a large high span or a high reinforcement ratio. For the former, we used to describe the calculation of bearing capacity of the flexural members in the past.