竹条网加固夯土墙抗震性能试验研究  

Experimental Study on Seismic Performance of Bamboo Net Strengthened Earth Walls

作　　者：李梁峰[1] 

机构地区：[1]福建省建筑科学研究院,福建福州350025

出　　处：《水利与建筑工程学报》2015年第6期30-35,共6页Journal of Water Resources and Architectural Engineering

基　　金：住房和城乡建设部研究开发项目(2009-R4-8);国家自然科学基金(51108091)

摘　　要：福建土楼等夯土古建筑由于受环境长期侵蚀和旅游开发的影响已遭到严重破坏,迫切需要进行抗震加固。针对现有夯土结构抗震加固方法的不足,提出了用竹条网对夯土墙进行抗震加固的新方法。在此基础上制作8片夯土试验墙,并对其进行水平单调荷载和往复荷载试验,研究了竹条用量、竖向荷载及承压装置等对加固效果的影响。研究结果表明:竹条网加固法能够有效提高夯土墙的抗震性能,其加固效果随加固竹条量的增加而显著增加。水平承载力及变形能力受竖向荷载影响较大,随着竖向压力的增加,墙体的水平承载力有较大增长,而变形能力有所降低。使用竹衬管作为承压装置可以有效提高其承载能力与延性。竹条网加固法在夯土古建筑抗震加固中具有较广阔的应用前景。Due to the long-term erosion of the environment and the influence of tourism development,Fujian Tulou and other historical structures built with rammed earth have been seriously damaged. There is an urgent need for seismic reinforcement of these buildings. To overcome the disadvantages of the existing seismic reinforcement methods for rammed earth structures,a new method using bamboo net was proposed. With this method,8 test walls with rammed earth were constructed. And then the horizontal monotonic loading tests and cyclic loading tests were conducted to investigate the effect of the amount of bamboo splints,vertical loading and the stress dispersing device on the reinforcement of the test walls. The results indicate that the strengthening method with bamboo net can effectively improve the seismic performance of rammed earth walls,which enhances with the increase of the amount of bamboo splints in the net. The horizontal bearing capacity and deformation capacity are greatly influenced by the vertical load,with the increase of the vertical load the horizontal bearing capacity of the wall increases significantly,while the deformation capacity decreases. Using bamboo tubes as stress dispersing devices can effectively improve the bearing capacity and ductility of the wall. Therefore the reinforcement method with bamboo net has a broad application prospect in the seismic reinforcement of historical rammed earth structures.

关 键 词：夯土结构 竹条网 抗震加固 

分 类 号：TU531.3[建筑科学—建筑技术科学]