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首页> 外文会议>Australian Conference on the Mechanics of Structures and Materials >Effect of partially infill wall on the seismic behavior of RC frame buildings
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Effect of partially infill wall on the seismic behavior of RC frame buildings

机译：部分填充墙对RC框架建筑物地震行为的影响

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摘要

The partially infilled Reinforced Concrete (RC) frames have been one of the major victims of the earthquakes in the past. It is normally called as the captive column effect wherein the lower portion of the column is kept captive by the surrounding infill wall while the upper portion is allowed to deform laterally. The upper free portion of the column attracts huge shear force during earthquakes and might get severely damaged and possibly lead to the collapse of the buildings. Although there are a number of studies conducted on the masonry infilled RC frames in general, yet partially infilled frames have not been adequately studied under the dynamic load. In this study, a three storey RC building with partially infill wall on the ground floor is studied under the ground motions with the 475 year return period. The height of the infill wall is varied along the height of the columns and the resulting shear demands are estimated. To study the mitigation measures of the captive column effect, the shear and moment capacities of the ground floor columns are increased by factors of 2.5 and 4 times the original design strength. It was found that the captive column effect is maximum when the infill wall height is 75% of the column clear height. Increasing the shear strength of the column is found to be beneficial but providing the infill wall up to the full height of the column to eliminate the short-column effect is still the most desirable for structure protection.
机译：部分含水的钢筋混凝土（RC）框架是过去地震的主要受害者之一。它通常被称为俘获柱效果，其中柱的下部通过周围的填充壁保持俘获，而上部允许横向变形。柱的上部自由部分在地震期间吸引了巨大的剪切力，可能会受到严重损坏，可能导致建筑物的崩溃。尽管在砌体indiFed的RC框架上有许多研究通常，但在动态负荷下尚未充分研究部分缺陷的框架。在这项研究中，在底层填充墙上的三层楼层R​​C建筑，在地面运动下，返回期限为175年。填充壁的高度沿着柱的高度而变化，估计产生的剪切要求。为研究俘虏柱效应的缓解措施，底层柱的剪切和瞬间容量由原始设计强度的2.5和4倍的因素增加。有发现，当填充壁高度为柱清晰高度的75％时，俘虏柱效应最大。增加柱子的剪切强度被发现有益，但是将填充墙体提供到柱的全高度，以消除短柱效果仍然是结构保护的最理想。

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