轻钢骨架水泥粉煤灰发泡墙板的抗震性能
Seismic performance of lightweight steel skeleton cement fly ash foam wallboard
刘铖聪 1白羽 2苏何先 2蒋欣利 1李振南 1王俊伟1
作者信息
- 1. 昆明理工大学建筑工程学院,云南 昆明 650500
- 2. 昆明理工大学建筑工程学院,云南 昆明 650500;云南省抗震工程技术研究中心,云南 昆明 650500
- 折叠
摘要
针对轻钢轻混凝土组合墙板抗震性能的研究相对缺乏,同时为研究不同填料对轻钢骨架水泥粉煤灰发泡墙板抗震性能的影响规律,设计了 3 个不同填料的墙板进行低周往复水平荷载试验,探究了不同填料对墙板的抗震性能的影响.结果表明:不同填料配比墙板的破坏模式大致相同,墙板的整体性和抗震性能较好;在轻钢骨架水泥粉煤灰发泡墙板中掺入聚丙烯纤维和增加水泥用量可以有效地提高墙体的抗震性能和抗侧刚度,增强墙体的承载力和延性,同时还可以明显提高墙体的变形能力以及耗能能力.与对照组相比,掺加 0.4%聚丙烯纤维或增加水泥用量至 50.0%的墙板受剪承载力均提高了约 54.0%,抗侧刚度分别提高了 26.0%和 15.0%,累计耗能分别提高了 172.0%和 86.0%.
Abstract
There is a relative lack of research on the seismic performance of lightweight steel and lightweight concrete composite wall panels.Therefore,in order to investigate the influence of different fillers on the seismic performance of lightweight steel skeleton cement fly ash foamed wall panels,three wall panels with different fillers were designed to carry out a low circumferential reciprocating horizontal loading test,to analyze and study the influence of different fillers on the seismic performance of the wall panels.The results showed that the damage modes of the wall panels with different filler ratios were more or less the same,and the wall panels have better integrity and seismic performance;the incorporation of polypropylene fibers and the increase of cement dosage in light steel skeleton cement fly ash foamed wall panels can effectively improve the seismic performance and lateral stiffness of the walls,enhance the bearing capacity and ductility of the walls,and also significantly increase the deformation capacity as well as the energy-consuming capacity of the walls.Compared with the control group,the wall paneled with 0.4%polypropylene fibers or increased cement dosage up to 50.0%both increased the shear bearing capacity by about 54.0%,the lateral stiffness by 26.0%and 15.0%,and the cumulative energy consumption by 172.0%and 86.0%,respectively.
关键词
轻钢骨架水泥粉煤灰发泡墙体/低周往复水平荷载/抗震性能/高强轻质填料Key words
lightweight steel skeleton cement fly ash foam wall/low cycle reciprocating horizontal load/seismic performance/high strength lightweight filler引用本文复制引用
出版年
2024
NETL
NSTL
万方数据