论文部分内容阅读
一、设计原则试验研究表明,在地震作用下,梁首先屈服使框架具有较大的内力重分配和耗散能量的能力,强柱弱梁框架的极限层间位移比强梁弱柱型框架的大,具有较好的抗震性能,现行抗震规范(GBJ11-89)规定,一,二级框架柱的极限抗弯能力应大于梁的极限抗弯能力,以保证实现强柱弱梁的原则。然而在实际工程中,梁两侧楼板参与梁的工作,梁的实际屈服强度高于设计强度以及钢筋有超强性能;另一方面,由于高振型的影响,地震不同时刻在
First, the design principle Experimental studies have shown that, under the action of earthquakes, the beam first yields the frame to have a greater internal force to redistribute and dissipate energy. The strong layer weak beam frame limit displacement between layers than the strong beam weak column frame , Has better seismic performance, the current seismic code (GBJ11-89) provides that the ultimate bending capacity of the first and second frame columns should be greater than the ultimate bending capacity of the beam to ensure the principle of strong column weak beams. However, in actual projects, the beams on both sides of the beam participate in the work of the beam. The actual yield strength of the beam is higher than the design strength and the steel bar has superior performance; on the other hand, due to the effect of high vibration mode, earthquakes occur at different times.