【摘要】 对两栋现浇钢筋混凝土框架结构进行了侧向荷载作用下的裂缝开展状况调查与原因分析,通过实际工程检测发现,裂缝多出现在柱头和柱脚,而梁端裂缝甚少。该现象表明,现有结构设计方法得到的框架结构,在侧向荷载作用下,柱端塑性铰比梁端塑性铰更易于出现。由于现浇楼板的存在对框架梁端的实际抗弯能力起了不可忽略的参与作用,故在结构设计过程中应适当考虑其作用。更多还原

【Abstract】 The crack development of two cast-in-place RC frame structures subjected to lateral loading was investigated.The reasons for the crack development were analyzed.The investigation indicates that many cracks appeared at the column end and few of them appeared at beam end.It shows that the plastic hinges appear more easily at column end than beam end in RC frame structure designed by the present designing method.The existence of monolithical slab in reinforced concrete frame structure strengthened the actual flexural capability of longitudinal beams.Therefore,the participation of monolithical slabs should be made into consideration in structural design to achieve the strong column weak beam philosophy.更多还原