摘要
通过对四边支承现浇钢筋混凝土板的弹性算法与塑性算法、PMCAD电算结果与手算结果的比较,发现:按塑性铰线法进行设计计算,不仅能更准确地估计钢筋混凝土板的极限承载能力及其在正常使用极限状态下裂缝开展的宽度、有效地节约材料,而且可避免单、双向板的主观划分导致的分界点附近计算结果的不连续。另外,指出了长向与短向跨度之比小于2.0时、大于2.0时,在2.0和3.0之间时,以及大于3.0时,PMCAD电算结果的不合理性及其造成的影响。
According to comparing the result of elastic-method with plastic-method and the result of PMCAD with manual calculation, it has been shown: for four edges supported rectangular reinforced concrete plate, the method of yield line can not only estimate the load capacity and crack width of reinforced concrete plate accurately, save steel bar effectively, but also avoid the discontinuousness of results taking place in the vicinities of theoretical boundary between one-way slab and two-way slab. Besides,the paper point out several invalid results of PMCAD in many cases.
出处
《工程建设与设计》
2004年第10期26-28,共3页
Construction & Design for Engineering
