| 带窗洞加强肋复合墙体抗震性能及抗侧刚度影响因素研究 |
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| 引用本文： | 陈国新,陈叶顺,吕信敏.带窗洞加强肋复合墙体抗震性能及抗侧刚度影响因素研究[J].世界地震工程,2019,35(1):027-35. |
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| 作者姓名： | 陈国新 陈叶顺 吕信敏 |
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| 作者单位： | 新疆农业大学 水利与土木工程学院, 新疆 乌鲁木齐 830052 |
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| 摘 要： | 进行了1榀开窗洞1:2比例的加强肋复合墙体模型的伪静力试验，通过对墙体中钢筋应变进行分析，研究墙体的受力性能和破坏模式，探究在低周反复荷载作用下带窗洞加强肋复合墙体的承载力、滞回及耗能能力、延性和刚度退化等抗震性能，并与不开洞墙体的抗震性能进行对比。在试验研究的基础上，建立具有不同窗洞参数的有限元数值模型，探究窗洞位置、大小、肋柱截面及肋柱配筋率的改变对加强肋复合墙体抗侧刚度的影响。结果表明:带窗洞加强肋复合墙体按照砌块-外框-肋梁的顺序依次破坏，破坏模式以弯剪型破坏为主；相比不开洞加强肋复合墙体，带窗洞墙体的抗侧刚度等抗震性能明显较差；相同窗洞尺寸情况下，窗洞居中时加强肋复合墙体的抗侧刚度相对较大；窗洞开洞率小于12.9%的墙体洞边可不设肋柱；洞边加强肋柱对开窗洞墙体的抗侧刚度提升作用显著，但其提升作用随着窗洞肋柱截面的增大而逐渐减弱；增大加强肋柱配筋率对墙体抗侧刚度的提高不明显。
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| 关 键 词： | 加强肋复合墙体 窗洞 模型试验 抗震性能 抗侧刚度 |
Study on seismic performance and influence factors of lateral stiffness of reinforced rib composite wall with a window |
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| CHEN Guoxin,CHEN Yeshun,LV Xinmin.Study on seismic performance and influence factors of lateral stiffness of reinforced rib composite wall with a window[J].World Information On Earthquake Engineering,2019,35(1):027-35. |
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| Authors: | CHEN Guoxin CHEN Yeshun LV Xinmin |
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| Affiliation: | School of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052 China |
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| Abstract: | A test was conducted on the seismic performance of a 1:2 scaled reinforced ribbed composite wall model with a window hole.The strain of steel bar in the specimen was analyzed to study the mechanical performance and failure mode of the wall.The seismic performance such as bearing capacity,hysteretic and energy dissipation,displacement ductility,and stiffness degradation of the specimen under cyclic loading was explored,which were also compared with the seismic performance of standard walls without hole.On the basis of experimental research,the finite element numerical models with different window hole parameters were established in order to explore the influence of the position,size,rib column section and reinforcement ratio of the rib column on the lateral stiffness of reinforcing rib composite wall.The results show that the reinforced ribbed composite wall with a window hole is destroyed in sequence of block-frame-rib,the failure mode is mainly bending-shear failure.The seismic performance such as lateral stiffness of the wall with a window hole is poor compared with standard walls without hole.The lateral stiffness of reinforced ribbed composite wall with a center window hole is relatively larger than other cases with the same size of window hole.There is no need to set up the ribbed column for the wall with hole rate less than 12.9%.The reinforcing rib columns at the edge of the hole have an obvious improvement to the lateral stiffness of the wall with a window hole,but the improvement effect gradually decreases with the increase of rib section.The increase of reinforcement ratio of the rib column is not obvious on improving the lateral stiffness. |
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| Keywords: | reinforced rib composite wall window hole model test seismic performance lateral stiffness |
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