竖向荷载作用下短肢剪力墙结构承载能力试验研究

短肢剪力墙结构是现今运用较普遍的抗侧力结构,为了研究这种抗侧力能力较好的结构在竖向荷载作用下的承载能力,以一个实际的短肢剪力墙工程结构为背景,选取靠近顶层附近的三层结构进行简化,结合结构模型试验的相似性原理,按照1:4的缩尺比例制作了一个三层两跨短肢剪力墙结构试验模型。通过在试验模型第二层楼板施加竖向均布荷载的试验表明,短肢剪力墙结构具有良好的承载性能,竖向荷载作用下墙肢整体受弯,连梁端部和墙板连接处为短肢剪力墙结构的薄弱区。结合试验结果阐述了短肢剪力墙中L型和T型截面在压弯复合作用下受力性能和破坏机理。

Experiment Research on Bearing Behavior of Short Limb Shear Wall Structures Under Vertical Load

Short pier shear wall structure is commonly applied for the lateral load resistance. In order to study an improved bearing capacity of this structure to resist lateral force under vertical load, with a practical short leg shear wall structure taken as its background, with the three layer structure near the top layer much simplified, and with the similarity principle of structural model test adopted, a test model of three-storied short leg shear wall structure with two spans has been established with a scale ratio of 1:4. Experimental results of the second floor structure under the vertical load show that short leg shear wall structure exhibits a better bearing capacity under vertical load. Under the action of the vertical load, with the whole wall limb in a bending state, the end of tie-beam and the wallboard joint proves to be the weak area of short pier shear wall structure. Finally, based on the testing results, this paper expounds the mechanical properties and failure mechanism of L and T sections in short leg shear walls under the action of bending composite.