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轻钢龙骨框格密肋复合墙是在普通RC密肋复合墙的基础上,以轻钢龙骨代替肋梁肋柱中钢筋龙骨而形成的一种改进型密肋复合墙,为使密肋结构在大开间、中高层建筑结构中的应用成为可能,对轻钢龙骨框格密肋复合墙体抗震性能开展试验与理论研究十分必要。设计进行了1/2比例轻钢龙骨密肋复合墙体与标准RC复合墙体的低周反复荷载试验,对比研究改进前后密肋复合墙在破坏形态、承载力、刚度、延性等主要抗震性能方面的差异。试验结果表明,轻钢龙骨复合墙与普通RC复合墙均呈整体剪切型破坏,遵循砌块-框格-外框的破坏顺序;在用钢量增加17%的条件下,前者屈服荷载较后者提高了54.3%,极限荷载提高了53.1%,刚度及耗能性能亦明显优于后者;延性方面两者表现基本一致。该文研究工作为轻钢龙骨框格密肋复合墙在密肋结构中的应用提供了试验数据与基础。
Light steel keel frame lattice The multi-rib composite wall is a kind of improved multi-rib composite wall which is formed on the basis of common RC multi-ribbed composite wall with light steel keel instead of steel keel in the rib beam rib column. In the open room, the application of high-rise building structure becomes possible. It is necessary to carry out experimental and theoretical research on the seismic performance of lightweight steel joist slender multi-ribbed composite wall. The low-cycle cyclic loading tests of half-ratio light steel keel multi-ribbed composite wall and standard RC composite wall were designed and compared. The main seismic performance of the multi-ribbed composite wall before and after the damage was analyzed, such as failure mode, bearing capacity, stiffness and ductility The difference. The test results show that the light steel keel composite wall and the common RC composite wall are all shear-type failure, follow the block - the grid - the outer frame of the destruction order; the amount of steel increased 17% under the conditions, the former yield load than The latter increased 54.3%, the ultimate load increased 53.1%, stiffness and energy dissipation performance is also significantly better than the latter; ductile aspects of the performance of the two basically the same. The research work provided the experimental data and foundation for the application of light steel joist slender multi-ribbed composite wall in the multi-ribbed structure.