高宽比对生态复合墙体破坏模式的影响  

Influence of Aspect Ratio on Failure Patterns of Eco-composite Walls

作　　者：侯莉娜[1] 卢俊龙[2] 黄炜[3] 田英侠[1] 

机构地区：[1]西安工业大学建筑工程学院,陕西西安710021 [2]西安理工大学土木建筑工程学院,陕西西安710048 [3]西安建筑科技大学土木工程学院,陕西西安710054

出　　处：《水利与建筑工程学报》2015年第2期116-120,共5页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(51378416;51178385);陕西省教育厅自然科学专项基金(2013JK0986);西安市建设科技项目(SJW2014027)

摘　　要：生态复合墙体是生态复合墙结构的主要受力构件,其破坏模式不单一。高宽比是影响墙体破坏模式的重要因素之一。在不同高宽比生态复合墙体试验研究的基础上,介绍了墙体破坏机理及破坏模式,对比分析了不同高宽比墙体破坏模式及原因,建立非线性有限元模型,对不同高宽比墙体破坏模式进行分析。结果表明:生态复合墙体破坏模式本质上由复合墙板及边框柱的相对强弱决定,对于填充加气混凝土砌块生态复合墙体,当墙体高宽比<1.5时,墙体发生合理的剪切型破坏;对于填充秸秆泥坯砖生态复合墙体,当墙体高宽比<1.7时,墙体发生剪切型破坏。研究结果对于生态复合墙体的抗震优化设计具有一定的参考意义。As the main bearing member of the eco-composite wall structure,the eco-composite wall has various failure patterns. Aspect ratio is one of the most important parameters which affects on failure patterns of the walls.Based on the test results of the eco-composite walls with various aspect ratios,the main failure processes and patterns of the walls were introduced. Contrast analysis on the reason of the walls＇ failure patterns with different aspect ratios was conducted. A nonlinear finite element model was set up to study the influence of different aspect ratios on failure patterns of eco-composite walls. Results indicate that the failure patterns of the eco-composite walls are essentially determined by the relative strength of the eco-composite slabs and the side-frame columns. For the ecocomposite walls with air-entraining concrete blocks,when the aspect ratio 1. 5,shear failure which is the reasonable failure mechanism occurs; For the walls with straw mud blocks,when 1. 7,shear failure occurs. These findings will provide certain reference for optimal a seismic design of eco-composite wall structures.

关 键 词：生态复合墙体 试验研究 高宽比 破坏模式 

分 类 号：TU227[建筑科学—建筑设计及理论]