聚丙烯打包带网水泥砂浆面层加固残损砖箍窑洞抗震性能评估方法研究
作者简介:
周庚敏,硕士,工程师,E⁃mail:1301426962@ qq. com
作者单位:
1.陕西省建筑科学研究院有限公司,陕西西安 710082; 2.陕西省建筑工程质量检测中心有限公司,陕西西安 710082; 3.中联西北工程设计研究院有限公司,陕西西安 710077
基金项目:
陕西省重点研发计划(2025YS⁃01);陕西省省级国有资本经营预算科技创新专项资金项目(ZXZJ⁃2024⁃015);陕西省建筑科学研究院科研项目(2023⁃11⁃458,2025⁃1⁃545)
摘要:
为研究残损砖箍窑洞加固后的抗震性能,采用聚丙烯打包带网水泥砂浆面层对一缩尺比例为 1 ∶4的典型传统民居砖箍窑洞残损试验模型进行抗震加固,并对加固后的模型结构进行振动台试验。试验中选取 2 条自然波和1 条人工波作为地震动输入,分析了结构模型的破损形态、拱券收敛变形及窑腿侧移角。结果表明,地震作用下聚丙烯打包带网水泥砂浆面层加固残损砖箍窑洞的薄弱点在拱券和窑腿位置;随着输入峰值加速度的不断增大,拱券收敛变形值和窑腿侧移角基本呈增大趋势,至加载结束,拱券收敛变形值缩小 1.36%和扩大 0.83%,窑腿侧移角最大值为 1 / 29.结合模型结构破坏程度、拱券收敛变形值和窑腿侧移角限值,提出了震后模型的损伤控制指标和评估方法,通过有限元软件 ABAQUS 验证了所提评估方法的合理性。

English:
In order to study the seismic performance of the damaged brick hoop cave dwelling, theseismic reinforcement of a typical traditional brick hoop cave dwelling damage test model with a scaleratio of 1 ∶ 4 was carried out by cement mortar coating with polypropylene packaging belt mesh. In thetest, two natural waves and one artificial wave were selected as an earthquake input, analyzing thedamaged form of the structural model, the arch convergence deformation, and the lateral angle of the caveleg. The results show that the weakness of the damaged brick hoop cave dwelling strengthened by cementmortar coating with polypropylene packaging belt mesh under the action of earthquake is located in thearch and cave leg; As the peak of the input acceleration continues to increase, the arch convergencedeformation value and the lateral displacement angle of the cave leg is basically increasing. By the end ofthe load, the arch convergence deformation value is reduced by 1.36% and expanded by 0.83%,themaximum lateral angle of the cave leg is 1 / 29. Based on the degree of model structural damage, theconvergence deformation value of the arch, and the limit value of the cave leg lateral displacement angle,damage control indicators and evaluation methods for post⁃earthquake models were proposed. Therationality of the proposed evaluation method was verified by finite element software ABAQUS.