摘要
本文结合板柱体系结构改造工程,分析了既有建筑存在的问题,包括结构体系抗震冗余度差、层间变形过大、结构碰撞,以及抗震设防类别提高、楼层存在高差不便残疾人使用等问题。针对这些问题,遵循“先体系,后构件、先整体,后局部”的原则,采取了附加子结构(带框钢支撑)加固方法,以改变原有结构体系、解决层间位移和扭转变形过大问题,从而提高结构抗震性能;通过调平楼板标高,以减少错层的不利影响,并采取相应的构造措施,确保后续使用年限结构的安全。
Through the specific slab-column system structural renovation project, this paper analyzes the problems about existing buildings, including poor seismic redundancy of the structural system, oversized story drift, the structural collisions, as well as problems arising from the improvement of seismic fortification categories, and the inconvenient use for the disabled caused by the height difference between floors. In view of the existing problems, following the principle of " the structural system first and then its component, overall system first and then its details", the attached substructures(steel brace with frame) is adopted to change the structural system, solve the problems of oversized story drift and torsional effect, thereby improving the seismic performance of the structure;The floor elevation is adjusted to reduce the adverse effects of split level, and corresponding structural measures are taken to ensure the structural safety of the subsequent service life.
作者
殷浚铭
尹保江
宗立阳
郝光钦
丁相宜
杜媛媛
韩淼
Yin Jun-ming;Yin Bao-jiang;Zong Li-yang;Hao Guang-qin;Ding Xiang-yi;Du Yuan-yuan;Han Mia(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;China Academy of Building Research,Beijing 100013;State Key Laboratory of Building Safety and Built Environment,Beijing 100013,China)
出处
《工程抗震与加固改造》
北大核心
2022年第3期157-160,172,共5页
Earthquake Resistant Engineering and Retrofitting
基金
国家重点研发计划(2019YFC1509304-01)。
关键词
板柱体系
抗震设防类别
带框钢支撑
抗震加固
slab-column structural system
seismic fortification category
steel brace with frame
seismic strengthening
