|
|||||
|
|
| 火灾后钢筋混凝土剪力墙抗震性能试验研究 | |
| 引用本文： | 刘桂荣,宋玉普,曲福来.火灾后钢筋混凝土剪力墙抗震性能试验研究[J].大连理工大学学报,2011,51(4):555-560. |
| 作者姓名： | 刘桂荣 宋玉普 曲福来 |
| 作者单位： | 1. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 华北水利水电学院土木与交通学院,河南郑州450011 2. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连,116024 3. 华北水利水电学院土木与交通学院,河南郑州,450011 |
| 基金项目： | 高等学校博士学科点专项科研基金资助项目(200801410005); 华北水利水电学院高层次人才科研启动基金资助项目(201070) |
| 摘 要： | 对6榀普通钢筋混凝土剪力墙进行了低周反复水平荷载试验,其中3榀剪力墙在进行荷载试验之前,遭受了轴压状态下（最大轴压比为0.46）的火灾试验.分析了火灾作用及轴压比对混凝土剪力墙破坏形态、承载力、延性、滞回特性、刚度及耗能能力的影响规律.结果表明：随着轴压比增加,火灾作用使混凝土剪力墙在常温下由弯剪破坏向剪切破坏转化的主斜裂缝破坏特征逐渐消失;火灾后剪力墙的承载力、延性降低,累积滞回耗能和初始刚度大幅下降,其抗震性能明显降低;与常温下类似,随着轴压比在一定范围内的提高,火灾后剪力墙的承载力及刚度提高,但延性和耗能能力降低. |
| 关 键 词： | 钢筋混凝土 剪力墙 火灾后 低周反复荷载 轴压比 |
Experimental research on seismic behavior of reinforced concrete shear walls after fire |
|
| LIU Guirong,SONG Yupu,QU Fulai.Experimental research on seismic behavior of reinforced concrete shear walls after fire[J].Journal of Dalian University of Technology,2011,51(4):555-560. | |
| Authors: | LIU Guirong SONG Yupu QU Fulai |
| Institution: | LIU Gui-rong1,2,SONG Yu-pu1,QU Fu-lai2(1.State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.School of Civil Engineering and Communication,North China University of Water Conservancy and Hydroelectric Power,Zhengzhou 450011,China) |
| Abstract: | Six normal reinforced concrete(NRC) shear walls were tested under low cyclic horizontal loading.Prior to the cyclic tests,three of them were exposed to fire under axial loads and the maximal axial load ratio(ALR) was 0.46.The effects of fire exposure and ALR on the seismic behavior,such as failure mode,bearing capacity,ductility,hysteretic characteristics,stiffness and energy dissipation of NRC shear walls were examined.The experimental results show that with an increase of ALR,fire exposure leads to gradua... |
| Keywords: | reinforced concrete shear wall after fire low cyclic loading axial load ratio |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《大连理工大学学报》浏览原始摘要信息 | |
| 点击此处可从《大连理工大学学报》下载免费的PDF全文 | |