东南大学学报(自然科学版)
東南大學學報(自然科學版)
동남대학학보(자연과학판)
JOURNAL OF SOUTHEAST UNIVERSITY
2013年
6期
1288-1292
,共5页
徐明%时丹%赵娜%陈忠范
徐明%時丹%趙娜%陳忠範
서명%시단%조나%진충범
料石墙体%缩尺模型%受力特征%抗震性能
料石牆體%縮呎模型%受力特徵%抗震性能
료석장체%축척모형%수력특정%항진성능
stone masonry wall%reduced scale model%stress characteristic%seismic behavior
为了对料石墙体缩尺试验方法进行探究,开展了足尺试件和2种不同缩尺试件的水平低周反复荷载试验研究,通过对比破坏特征、各阶段剪应力和水平位移角以及抗震性能等指标,对2种缩尺模型进行分析。试验结果表明:采用墙体缩尺、砌块足尺的缩尺模型在破坏特征、各阶段剪应力和水平位移角以及抗震性能方面,除滞回性能和耗能能力略有不同外,其余均与足尺模型试验结果较为接近,该缩尺模型基本可以反应足尺模型的特性;而严格按照相似比理论的缩尺模型,在破坏特征和各阶段剪应力方面与足尺模型试验结果较为接近,但由于砌块表面粗糙程度的不同,其在水平位移角和抗震性能方面与足尺模型有较大差距。
為瞭對料石牆體縮呎試驗方法進行探究,開展瞭足呎試件和2種不同縮呎試件的水平低週反複荷載試驗研究,通過對比破壞特徵、各階段剪應力和水平位移角以及抗震性能等指標,對2種縮呎模型進行分析。試驗結果錶明:採用牆體縮呎、砌塊足呎的縮呎模型在破壞特徵、各階段剪應力和水平位移角以及抗震性能方麵,除滯迴性能和耗能能力略有不同外,其餘均與足呎模型試驗結果較為接近,該縮呎模型基本可以反應足呎模型的特性;而嚴格按照相似比理論的縮呎模型,在破壞特徵和各階段剪應力方麵與足呎模型試驗結果較為接近,但由于砌塊錶麵粗糙程度的不同,其在水平位移角和抗震性能方麵與足呎模型有較大差距。
위료대료석장체축척시험방법진행탐구,개전료족척시건화2충불동축척시건적수평저주반복하재시험연구,통과대비파배특정、각계단전응력화수평위이각이급항진성능등지표,대2충축척모형진행분석。시험결과표명:채용장체축척、체괴족척적축척모형재파배특정、각계단전응력화수평위이각이급항진성능방면,제체회성능화모능능력략유불동외,기여균여족척모형시험결과교위접근,해축척모형기본가이반응족척모형적특성;이엄격안조상사비이론적축척모형,재파배특정화각계단전응력방면여족척모형시험결과교위접근,단유우체괴표면조조정도적불동,기재수평위이각화항진성능방면여족척모형유교대차거。
Horizontal cyclic loading tests were carried out on a full scale specimen and two reduced scale specimens to find out the appropriate reduced scale model of stone masonry walls.The failure mode,shear strength,horizontal displacement angle and seismic behavior were analyzed.The exper-imental results show that except for the hysteretic performance and energy dissipation capacity,the failure mode,shear strength,horizontal displacement angle and seismic behavior of the model with full scale block but reduced scale wall are close to those of the full scale model.This reduced scale model can basically represent the characteristics of the full scale mode.As for the reduced scale model strictly accordant with the theory of similarity,the failure mode and shear strength are close to those of the full scale model;however,because of the difference on surface roughness of block,the horizontal displacement and seismic behavior are totally different from those of the full scale model.