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根据震害经验,为了充分发挥梁的延性,防止在地震荷载下明牛腿被拉裂破坏,在对三个整浇节点、四个齿槽装配整体节点以及四个明牛腿节点进行抗震试验的同时,探讨了梁内主筋在节点核心区的不同锚固方案以及防止明牛腿破坏的几项措施;此外,根据试验结果,提出了用构造措施保证梁端延性的要求。上述十一个梁柱节点,均按“强柱弱梁”的原则进行设计,以保证塑性铰出现在梁端。梁截面尺寸均为250×600mm,梁的上
According to the experience of earthquake damage, in order to give full play to the ductility of the beam and prevent it from being pulled and fractured under seismic loading, seismic tests were carried out on three tumbling nodes, four splined integral nodes, and four open pits. At the same time, the different anchorage schemes in the core zone of the main beam in the beam and several measures to prevent the damage of the open leg were discussed. In addition, according to the test results, the requirements for the ductility of the beam end using structural measures were proposed. The above eleven beam-column nodes are designed according to the principle of “strong column weak beam” to ensure that plastic hinges appear at the beam ends. Beam section size is 250×600mm, beam on