加入玄武岩纤维土工格栅的藏式毛石墙体抗压性能试验研究

摘要

结合藏式毛石墙体分层破坏特点,提出应用玄武岩纤维土工格栅进行抗压性能改良.通过对加入玄武岩纤维土工格栅毛石墙体进行抗压试验,从破坏过程、石材破坏程度、裂缝宽度、极限承载力等方面对比分析了加入土工格栅后毛石墙体的抗压性能变化情况.结果表明:加入玄武岩纤维土工格栅可显著提高毛石墙体极限承载力,且有效限制裂缝宽度;达到极限承载状态时,加入土工格栅毛石墙体未发生明显破坏,随着其中玄武岩纤维拉断,最终发生裂缝剧增的突然破坏;加入土工格栅对藏式毛石墙体分层破坏具有限制作用.该研究成果具有一定的理论依据和实用价值,可为藏式民居的改造及抗震加固提供参考依据.%Based on the characteristics of the Tibetan rubble wall delamination,this paper put forward the application of basalt fiber geogrid on compressive performance improvement.Through the rubble walls of basalt fibre geogrid compression test,from the failure process,stone material damage,crack width and ultimate bearing capacity analysis,the compressive performance changes of rubble walls after adding geogrid were analyzed.The results showe that adding basalt fiber geogrid can significantly improve the ultimate bearing capacity of rubble wall,and effectively limit the crack width;when reaching ultimate bearing state the rubble wall with geogrid has no obvious damage,with basalt fiber breaking rubble walls suddenly jump in crack damage eventually;adding geogrid can restrict the delamination of Tibetan rubble wall.The results of the study have a certain theoretical basis and practical value andcan provide a reference basis for the transformation and seismic reinforcement of the Tibetan style houses.