装配式混凝土双板剪力墙低周反复荷载试验.pdf

《装配式混凝土双板剪力墙低周反复荷载试验.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第44卷第4期东南大学学报(自然科学版)Vo1．44NO．42014年7月JOURNALOFSOUTHEASTUNIVERSITY(NaturalScienceEdition)July2014doi：i0．3969／j．issn．1001—0505．2014．04．026装配式混凝土双板剪力墙低周反复荷载试验肖全东郭正兴(东南大学土木工程学院，南京210096)(湖南科技大学土木工程学院，湘潭411201)摘要：为了研究装配式混凝土双板(DWPC)剪力墙的抗震性能，在轴压比为0．1的条件下，对3组具有不同剪跨比和边缘构件配筋率的6个DWPC剪力墙和3个现浇剪力墙的足尺比例

2、试件进行低周反复荷载试验．结果表明，DWPC剪力墙具有良好的整体工作性能；在边缘构件上设置连续复合螺旋箍能改善DWPC剪力墙的承载力、刚度及耗能能力，减缓其刚度退化；随着边缘构件配筋率的增加，DWPC剪力墙的承载力和刚度增大；经过构造改进的DWPC剪力墙具有良好的弹塑性变形能力和耗能能力；DWPC剪力墙的等效黏滞阻尼系数在试件屈服前与现浇剪力墙相近，在屈服后略低于现浇试件；DWPC剪力墙剪跨比越大，其耗能能力越接近同类现浇试件．关键词：装配式混凝土双板剪力墙；低周反复荷载；剪跨比；边缘构件中图分类号：TU317．1；TU398．2文献标志码：A文章编号：100l一0505

3、(2014)04-0826—06Low-cyclicreversedloadingtestfordouble—wallprecastconcreteshearwallsXiaoQuandong·GuoZhengxing(SchoolofCivilEngineering，SoutheastUniversity，Nanjing210096，China)(SchoolofCivilEngineering，HunanUniversityofScienceandTechnology，Xiangtan411201，China)Ahstract：Tostudytheseismicbeh

4、aviorofdouble—wallprecastconcrete(DWPC)shearWalls，threekindsoffuUscalespecimenswithdifferentshearspanratiosandve~icalreinforcingbarratiosofboundaryelements．includingsixDWPCshearwallsandthreenorrnalcast—in—situshearwalls，aretestedunderlOW—cyclicreversedloadingwithaxia1compressionratioof0．1

5、．ThetestresultsshowthattheDWPCshearwallscanworktogetherwel1．Installationofcontinuouscompoundspiralstir—rupsintheboundaryelementcanimprovethebearingcapacity，stiffness，seismicenergydissipationoftheDWPCshearwallsandweakenthestiffnessdegradation．Withtheincreaseofthevertica1rein—forcingbarrati

6、ooftheboundaryelement，boththebearingcapacityandthestiffnessincrease．TheimprovedDWPCshearwallshavesatisfactoryelastic—plasticdeformationcapacityandenergydissipa—tioncapacity．TheequivalentviscousdampingcoeficientsofDWPCspecimensarealmostthesameasthoseofcast．．in．situspecimenswithintheelastic

7、rangewhilebeingalittlelowerbeyondtheelasticrange．Moreover．theseismicenergydissipationcapacitiesoftheDWPCspecimensapproachtothoseofcast—in—situspecimenswiththeincreaseoftheshearspanratio。Keywords：double—wallprecastconcreteshearwall；low—cyclicreversedloading；shearspan