楼梯对框架结构抗震性能影响的研究.pdfVIP

ABSTRACT Our country is in the Circum-Pacific seismic belt and the Eurasian seismic belt, that is one of the most serious earthquake disasters in the world and with seismic wide distribution, strength, weight loss, high frequency. seismic capacity for new and existing buildings has always be attached. At present, reinforced concrete structure is one of the main structure types in china, it’s aseismic ability is an important to peoples safety and lives protect. How to improve the seismic capacity of building structure has become a very important topic. in the framework, the stairwell as the evacuation route, emergency occurs, was the focus of seismic research, if they were damaged, the most likely cause casualties, also make the rescue work can not be carried out. For frame structure, as the staircase is relatively weak, the extent of damage is generally higher than other parts of the damage is more serious. Such a situation occurred in the Wenchuan earthquake. So the experience will be summed up and lessons will be learned, how to improve the seismic performance of stair in frame structure is very important. Code for seismic design of buildings (GB50011-2010) still use the two stages of the design process and seismic design concept of three levels. Three level seismic fortification goal means no damage in small earthquake, repairable under moderate earthquake, no collapse under rare earthquake. The stairs of the frame structure from the calculation to the structure are adopted a series of measures, and strive to build emergency evacuation staircase emergencies channel. This paper discuss the influence of the seismic performance of the overall structure, and h