【作者】 张东东； 高永林； 柏文峰； 白羽；

【Author】 ZHANG Dong-dong;GAO Yong-lin;BAI Wen-feng;BAI Yu;Faculty of Architecture and Engineering,Kunming University of Science and Technology;Faculty of Architecture and Urban Planning,Kunming University of Science and Technology;Yunnan Engineering Seismic Institute,Kunming University of Science and Technology;

【机构】 昆明理工大学建筑工程学院； 昆明理工大学建筑与城市规划学院； 云南工程抗震所；

【摘要】 为验证自保温夯土墙的抗震性能,对足尺的自保温夯土墙房屋试验模型进行振动台试验。试验选取EL Centro、鲁甸波两组天然地震波作为输入激励,对结构的破坏情况、频谱特性、加速度反应、位移反应、以及钢筋应变进行分析。试验结果表明,墙体裂缝多位于拐角处,未出现大面积压碎或塌落。随着地震激励的增加,结构自振频率和刚度下降,动力放大系数呈下降趋势,X、Y向动力放大系数最大值分别下降16%、23%和25%、31%。结构X、Y向最大层间位移角分别为1/424(鲁甸波,0.90g)和1/294(ELCentro波,0.62g),延性较好。在9度罕遇烈度后,结构X、Y向均有不同程度破坏,多数钢筋的应变值较小,最大应变值为855.0με,仅为钢筋最大应变允许值的45%,未充分发挥钢筋性能。自保温夯土墙结构满足GB50011-2010《建筑抗震设计规范》(2016版)"小震不坏,中震可修,大震不倒"的抗震设防要求,并为下一步技术完善和指导实际工程建设提供了依据。更多还原

【Abstract】 To verify the seismic performance of self-insulated rammed earth walls,a shaking table test was conducted on a full-scale self-insulated rammed earth wall house test model.Two sets of natural seismic waves,EL Centro and LD wave,were selected as input excitations for the tests,and the damage,spectral characteristics,acceleration response,displacement response,steel strain of the structure were analyzed.The test results show that most of the wall cracks are located at the corners and there are no large areas of debris or detachment,with seismic motivation increases,the self-oscillation frequency and stiffness of the structure decrease and the dynamic amplification factor tends to decrease,with the maximum values of dynamic amplification coefficients in X and Y directions decreasing by 16% and 23% and 25% and 31% respectively.The maximum inter-story displacement angles of the structure in X and Y directions were 1/424(LD wave,0.90g) and 1/294(EL Centro,0.62g) respectively,which with good ductility.After a 9-degree rare earthquake,the structure was damaged to varying degrees in both the X and Y directions.The strain values of most of the reinforcement bars were small,with the maximum strain value of 855.0με,which only 45% of the maximum allowable strain of the reinforcement and did not give full play to the performance of the reinforcement bars.The self-insulated rammed earth wall structure meets the seismic protection requirements of GB50011-2010《Code for Seismic Design of Buildings》(2016 Edition),which states that "small earthquakes are not bad,medium earthquakes can be repaired,and large earthquakes do not collapse",and provides a basis for the next technical improvement and guidance for actual construction.更多还原