【摘要】 针对土坯砌体结构纵横墙连接性能差,地震中抗震性能表现拙劣的特点,提出采用钢丝网水泥砂浆加固的方法。采用ANSYS有限元分析软件,运用砌体等效体积单元方法,分别建立了素土坯结构和加固结构的有限元分析模型并进行时程分析。探讨了钢丝网水泥砂浆加固方法对结构自振周期、侧向刚度以及地震作用下结构应力水平和开裂破坏特征的影响。研究表明,采用钢丝网水泥砂浆加固方法能有效地提高结构刚度,减小了结构在地震作用下的位移响应;加固土坯砌体结构在小震作用下仅出现轻微损坏,中震作用下结构的延性和整体性得到改善,提高了土坯房屋的抗震性能。本文研究表明,钢丝网水泥砂浆加固是一种经济有效的方法。更多还原

【Abstract】 In view of the adobe masonry structure wall poor performance of connection and seismic,ferro-cement mortar strengthening method is presented in this paper. By ANSYS finite element analysis software and masonry equivalent volume element method,adobe and reinforced structure finite element analysis models are established respectively,and time history analysis is carried out. The influence of strengthening methods on the structural natural vibration period,lateral stiffness,structural stress level and crack characteristics is discussed. Studies show that strengthening with ferrocement mortar method can effectively improve the structure stiffness and reduce the displacement response under seismic action; reinforced structures appear only minor damage in moderate.Structural ductility,integrity and seismic performance improve significantly. Ferro-cement mortar strengthening is an economic and effective method.更多还原