Lateral-Force Resisting Mechanisms of Flexure-Dominant Multi-Story Structural Walls with Soft-First-Story

首层软层受弯多层结构墙的抗侧力机制

• 批准号: 23760524
• 负责人: SAKASHITA Masanobu
• 金额: $ 2.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760524/
• 关键词: ピロティ; RC造; 連層耐震壁; 枠梁; 曲げ降伏; 応力計測

In order to clarify the lateral-force resisting mechanisms of flexure-dominant multi-story structural walls, experimentalstudy was conducted with two reinforced concrete specimens with 30% scale. The specimens consisted of the soft first story and the three stories of structural wall from the second floor to the fourth floor. Although the structural walls failed in flexure at the second floor as expected, uniformly distributed drift angle was observed at eachstory. Insufficient flexural strength of boundary beams under the structural walls caused the plastic hinge rotation at the bottom end of columns at the first floor.

为了研究以弯曲为主的多层结构剪力墙的抗侧力机理，进行了两个缩尺为30%的钢筋混凝土试件的试验研究。试件由底层软土和二至四层三层结构墙组成。虽然结构墙在第二层的弯曲失败，如预期的，均匀分布的偏移角观察到在每一个故事。结构墙下边梁抗弯强度不足导致底层柱底端塑性铰转动。