884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 揚(yáng)州大學(xué)建筑科學(xué)與工程學(xué)院， 揚(yáng)州 225127； 2 徐州工程學(xué)院土木工程學(xué)院， 徐州 221111）

［摘要］為了研究柱腳損傷對(duì)古建木構(gòu)架抗震性能的影響，研制了2種不同損傷工況、縮尺比例為1∶3-52的6個(gè)直榫木構(gòu)架試件，對(duì)試件進(jìn)行水平低周往復(fù)加載試驗(yàn)，得到了不同損傷柱腳下木構(gòu)架的破壞形態(tài)與滯回性能，進(jìn)一步分析討論了損傷木構(gòu)架的骨架曲線、剛度退化曲線、耗能曲線。研究結(jié)果表明,隨著柱腳損傷程度的增大，木構(gòu)架滯回曲線的飽滿程度和峰值逐漸降低，骨架曲線的趨向平緩，等效黏滯阻尼系數(shù)也逐漸減小，木構(gòu)架的抗震性能逐漸下降。

［關(guān)鍵詞］木構(gòu)架； 損傷； 低周往復(fù)加載試驗(yàn)； 抗震性能

中圖分類號(hào)：TU366-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)09-0066-05

Seismic behavior study of timber frame with damaged column foot

Li Shengcai1, Luo Hongzhen1, Hu Changyong1,2, Zhou Zhongchen1, Yin Huiguang2

(1 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China；2 College of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, China)

Abstract:In order to study  the effect of column foot damage on the seismic performance of ancient timber frame, six tenon timber frame specimens with two different damage conditions and scale of 1:3-52 were developed. Horizontal low cycle reciprocating loading tests were carried out on the specimens. The failure modes and hysteretic properties of timber frame under different damaged column foot were obtained. The skeleton curves, stiffness degradation curves and energy dissipation curve of damaged timber frame were further analyzed and discussed. The analysis results show that with the increase of column foot damage, the fullness and peak value of hysteretic curve of timber frame decrease gradually, the skeleton curve tends to be flat, the equivalent viscous damping coefficient decreases gradually, and the seismic performance of timber frame decreases gradually.

Keywords:timber frame; damage; low cycle reciprocating loading test; seismic performance

*國(guó)家自然科學(xué)基金面上項(xiàng)目（51478409），國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目（51338001）。

作者簡(jiǎn)介：李勝才，博士，教授，Email：lisc@yzu.edu.cn。