摘要
地基基础的差异沉降会导致上部结构产生附加内力,上部结构在附加内力作用下会导致装饰层破损、构件开裂、结构整体倾斜等损伤,差异沉降超限时可能对结构安全存在不利影响。针对建造于湿陷性黄土地基某框架结构发生的不均匀沉降,通过结构损伤调查、沉降观测、有限元计算等手段综合分析,得出该结构不均匀的原因、地基缺陷影响范围及缺陷深度,提出了安全经济合理的加固处理方案且实施效果良好,为同类结构不均匀沉降的病害诊治技术提供参考。
The differential settlement of the foundation will lead to additional internal forces in the superstructure. Under the effect of the additional internal forces, the superstructure will cause damage such as damage to the decorative layer,cracking of components, and overall inclination of the structure. When the differential settlement exceeds the limit, there may be adverse effects on the safety of the structure. This paper aims at the uneven settlement of a frame structure built on collapsible loess foundation. Through the comprehensive analysis of structural damage investigation, settlement observation, finite element calculation and other means, the reasons for the uneven settlement of the structure, the influence range of foundation defects and the depth of defects are obtained. A safe, economic and reasonable reinforcement treatment scheme is proposed and the implementation effect is good, which provides a reference for the disease diagnosis and treatment technology of similar structures with uneven settlement.
作者
高鹏飞
陈浩
GAO Pengfei;CHEN Hao(MCC Testing&Certification Co.,Ltd.,Beijing 100088,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S02期1867-1872,共6页
Building Structure
关键词
差异沉降
附加内力
有限元计算
病害诊治
differential settlement
additional internal force
finite element calculation
disease diagnosis and treatment
