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本文以甘肃省某18层框剪结构住宅楼的地下室框架柱出现软弱夹层为背景,对该住宅楼进行了检测鉴定及加固设计。该建筑由于施工不当,致使地下室相邻的两根框架柱出现了软弱夹层。因为有软弱夹层的存在,最终导致在使用过程中夹层处被压缩,柱身产生较为严重的不均匀沉降,并且变形还在继续。通过检测得到混凝土框架柱的形变大小、混凝土的强度、碳化深度、保护层厚度以及裂缝宽度等重要数据,然后使用有限元软件ETABS进行了建模分析,由此也进一步的验证出检测数据的可靠性。通过有限元分析同时也得到更加准确的加固顺序以及加固范围,从而制定出更加有效可行的加固方案。有了这一分析过程也将给现实工程中的加固方案制定过程提供参考。
Based on the weak interlayer in the basement frame column of a 18-story frame-shear-structure residential building in Gansu Province, this paper carried out the testing and identification and reinforcement design of the residential building. Due to improper construction, the building resulted in weak intercalations between the two adjacent frame columns in the basement. Because of the presence of weak interlayers, which ultimately leads to compression at the interlayer during use, the column body experiences more severe non-uniform subsidence and the deformation continues. The deformation of concrete frame column, the strength of concrete, the depth of carbonation, the thickness of protective layer and the width of crack are obtained by testing. Then the finite element software ETABS is used to conduct the modeling analysis, which further verifies the reliability of the test data Sex. Finite element analysis also obtains a more accurate reinforcement sequence and reinforcement range, so that a more effective and feasible reinforcement scheme can be worked out. With this analysis process will also provide a reference for the reinforcement project development process in the real project.