论文部分内容阅读
通过在低周往复荷载作用下对5个不同轴压比和核心区配箍率的高强陶粒混凝土中节点和1个普通混凝土中节点进行抗震性能试验研究,对不同核心区配箍率及不同轴压比情况下的高强陶粒混凝土节点的破坏形态、滞回规律、骨架曲线特征、延性、耗能以及强度退化情况等问题进行研究。试验结果表明:高强陶粒混凝土节点的破坏过程与普通混凝土节点破坏过程相似;适当增加柱子的轴压比及节点核心区配箍率对高强陶粒混凝土框架节点的延性、耗能及强度退化等抗震性能有利;高强陶粒混凝土试件可以应用在一些有抗震设防要求的地区。本文为轻骨料混凝土的工程应用提供科学依据。
The seismic performance of five joints of high strength ceramsite concrete and one ordinary concrete with five different axial compression ratios and the ratio of the core zone were studied under low cyclic load. The failure morphology, hysteretic law, skeleton curve characteristics, ductility, energy dissipation and strength degradation of high strength ceramsite concrete under different axial compression ratios were studied. The results show that the failure process of high-strength ceramsite concrete joints is similar to that of common concrete joints. The ductility, energy dissipation and strength degradation of high-strength ceramsite concrete frame joints with appropriate increase of axial compression ratio Seismic performance is favorable; high-strength ceramsite concrete specimens can be used in some seismic requirements of the region. This article provides a scientific basis for engineering application of lightweight aggregate concrete.