页岩烧结保温砌块超薄灰缝墙体抗震性能试验研究

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1、页岩烧结保温砌块超薄灰缝墙体抗震性能试验研究白国良1，浮广明1，2，权宗刚1，2，王辉3，李学军1(1．西安建筑科技大学土木工程学院，陕西西安710055;2．西安墙体材料研究设计院，陕西西安710061;3．新疆凯乐新材料有限公司，新疆乌鲁木齐830009)摘要:为研究页岩烧结保温砌块超薄灰缝墙体的抗震性能，以有无构造柱、竖向压应力、高宽比、开洞率及开洞形式作为设计参数设计并制作10个试件，对其进行水平低周反复荷载试验。分析了该类墙体在拟静力荷载作用下的破坏过程和破坏形态，研究了构造柱、竖向压应力、高宽比、开洞率及开洞形式对其承载力、滞回曲线、

2、骨架曲线、延性、耗能性能、刚度退化等的影响。试验结果表明:构造柱-圈梁体系充分发挥了其对内部砌体墙的约束作用，实现了墙体“裂而不倒”的目标;增加竖向压应力、减小高宽比，均可提高墙体的受剪承载力，减缓墙体刚度退化速度;构造柱的存在对提高墙体受剪承载力和延性均有明显效果;洞口的削弱作用使墙体受剪承载力下降，耗能能力变差。建立了页岩烧结保温砌块超薄灰缝墙体受剪承载力计算式，计算结果与试验结果吻合较好。关键词:页岩烧结保温砌块;专用砌筑砂浆;超薄灰缝;拟静力试验;抗震性能;受剪承载力中图分类号:TU362文献标志码:ATU398.5TU317.1Expe

3、rimentalstudyonseismicbehaviorofshalefiredheat-insulationblockwallswithultra-thinmortarjointBAIGuoliang1，FUGuangming1，2，QUANZonggang1，2，WANGHui3，LIXuejun1(1．SchoolofCivilEngineering，Xi’anUniversityofArchitectureandTechnology，Xi’an710055，China;2．Xi’anＲesearchandDesignInstitute

4、ofWallＲoofMaterials，Xi’an710061，China;3．XinjiangKaileNewMaterialsCo．，Ltd，Urumqi830009，China)Abstract:Inordertostudytheseismicbehaviorofshalefiredheat-insulationblockwallswithultra-thinmortarjoint，tenspecimensweredesignedandmadeconsideringtheparametersoftheexistenceofconstruct

5、ionalcolumn，verticalcompressivestress，height-to-widthratio，ratioandformofopenings，andtestedunderlow-cyclereversedloading．Thedamageprocessandfailuremodewereanalyzedandtheloadcarryingcapacity，hystereticcurve，skeletoncurve，ductility，energydissipationcapacityandstiffnessdegradati

6、onwerealsostudied．Thetestresultsindicatethattheconstructionalcolumn-ringbeamisfullplaytothefunctionofconstraintforthemasonrywalls，andthedesigngoaloffracturebutnotcollapsecanbeachieved．Increasingtheverticalcompressivestressorreducingtheheight-to-widthratio，theshearcapacityisen

7、hanced，andstiffnessdegradationisslower．Becauseoftheconstructionalcolumn，theshearcapacityandductilityareenhanced．Becauseoftheopening，theshearcapacityandenergydissipationcapacityarepoor．Finally，theformulaforshearcapacitycalculationisproposed，whichagreeswellwiththetestresults．Ke

8、ywords:shalefiredheat-insulationblock;speciallayingmortar;ultra-thin