针对砖混结构的支撑加固方案设计及应用

Design and Application of Support Reinforcement Scheme for Brick-Concrete Structure

砖混结构的整体性及延性较差,在地震作用下易发生损坏或倒塌,但目前仍广泛存在于我国的村镇地区。为提高砖混结构的抗震性能同时降低震后损失,依据砖混结构破坏特点,设计了"窗"式和"门"式两类支撑形式,并以三层砖混结构为研究对象,通过支撑组合布置,研究此类加固方案对砖混结构抗震性能的影响。结果表明:砖混结构的开洞墙体在震后易发生损伤破坏,针对这一薄弱环节进行支撑加固是必要的;布置支撑可以有效减少砖混结构震后墙体损伤,减小位移变形;随着地震动强度的增大,支撑方案的加固效果会逐渐减弱。

Brick-concrete structures have poor integrity and ductility,and are prone to damage or collapse under earthquakes,but they still exist widely in rural areas in China.In order to improve the seismic performance of brick-concrete structures and reduce post-earthquake losses,“window”and“door”timber shoring are designed based on the damage characteristics of brick-concrete structures.By arranging wooden supports in a three-story brick-concrete structure,study the influence of such reinforcement schemes on the seismic performance of brick-concrete structures.The results show that brick-concrete structure’s open-hole wall is prone to damage after the earthquake,so it’s necessary to support and strengthen this weak link.supporting structures can effectively reduce the damage to the wall of the brick-concrete structure and reduce deformation after the earthquake;as the intensity of the earthquake increases,the reinforcement effect of the support scheme will gradually weaken.