砌体填充墙中塑钢门窗的地震易损性试验研究  

Experimental seismic fragility of windows and doors with plastic-steel frames in masonry infill walls

作　　者：谢贤鑫 张令心[1,2] 曲哲[1,2] XIE Xianxin;ZHANG Lingxin;QU Zhe(Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Adminstration,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2019年第4期184-191,共8页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局工程力学研究所基本科研业务费专项重点项目(2016A05);国家自然科学基金面上项目(51878629)~~

摘　　要：为了研究砌体墙充墙中普通门窗的地震易损性,进行了3个含塑钢门窗和足尺砌体填充墙的钢筋混凝土框架试验体的拟静力试验。根据试验中塑钢门窗的损伤发展过程,以其使用功能受影响的程度为依据,定义了“影响密闭”和“阻碍逃生”等两个损伤状态,并以层间位移角为工程需求参数,建立了塑钢推拉门窗和塑钢平开门窗的地震易损性曲线。结果表明,当框架的面内侧向变形达到我国抗震规范规定的框架结构弹性层间位移角限值时,推拉门窗有较大的概率达到或超过“影响密闭”状态。当框架的面内侧向变形达到我国抗震规范建议的钢筋混凝土框架结构发生中等破坏的层间位移角参考限值1/250时,平开门窗很有可能达到或超过“阻碍逃生”状态。当侧向变形进一步增大时,推拉窗面板可能脱离窗框而坠落。在试验中,当框架的层间位移角接近1/30时,固定窗才出现玻璃破碎现象,推拉窗则在试验全过程中均未出现玻璃破碎现象。To study the seismic fragility of doors and windows in masonry infill walls commonly-used in China,quasi-static tests were conducted on three geometrically identical full-scale reinforced concrete(RC)frame specimens with plastic-steel framed doors and windows and masonry infill.According to the observed damage and functional loss of the plastic-steel framed doors and windows during the test,two damage states,that is,"loss of enclosure"and"obstruction of escape",are defined.Inter-story drift ratio is taken as the engineering demand parameter for the fragility analysis.The results show that sliding windows are very likely to exceed the‘loss of enclosure’state at the elastic inter-story drift limit for frame structures as per the Chinese seismic design code.Side-hung doors are very likely to exceed the‘obstruction of escape’state at 1/250 inter-story drift ratio,which is the specified drift limit when moderate damage is expected in an RC frame as per the Chinese seismic design code.As the lateral deformation increased,the panel of a sliding window may fall out.Glass break was not observed in the test until the inter-story drift was almost 1/30.

关 键 词：拟静力试验 普通平板玻璃 PVC型材 使用功能 逃生 

分 类 号：TU362[建筑科学—结构工程]