摘要
采用单质点弹性变形体分析模型 ,建立了基础石墨滑移隔震砌体房屋的运动微分方程和滑移与啮合阶段的判别准则。通过动力时程分析 ,输入多条地震记录 ,研究了隔震缝错动位移在各种影响因素下的变化规律。结果表明 :场地条件和地震烈度 ,是影响错动位移幅值的主要因素。在一至三类场地 ,9度罕遇地震作用下 ,错动位移幅值最大不超过 12cm,通过适当加宽基础宽度的构造措施 ,不增设限位装置 ,即可满足隔震缝处构造要求。基础加宽宽度 ,一类场地取 2cm,二类场地取 6 cm,三类场地取 12 cm。
The equation of motion and distinguishing rule between slide and joggle was established about base-sliding masonry structure with graphite, though the dynamic analysis model with flexibility of single quality point. Input several earthquake waves, the variational laws of alternate displacement were discussed under every kind of influence factors. The research shows that the maximum of alternate displacement is mainly affected by earthquake intensity, sort of site. The maximum of alternate displacement is less than 12 cm under 620 gal. Therefore, masonry structure with base sliding isolation which adopt graphite mortar as frictional material, widening the foundation width to satisfy to the request of displacement is available without resilient device. The widened widths are 2 cm, 6 cm and 12 cm for the first, second and third site.
出处
《武汉理工大学学报》
CAS
CSCD
2003年第2期27-30,共4页
Journal of Wuhan University of Technology
基金
辽宁省科技厅重点工程基金资助 (9780 6 0 11)
东北大学博士论文资助
关键词
滑移隔震砌体房屋
隔震缝
错动位移
时程曲线
石墨膏泥
基础结构
masonry structure with base sliding isolation
isolation joint
alternate displacement
curve for time-history
graphite mortar
