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带栓钉钢板与外包混凝土剪力墙共同工作性能研究

Keywords: 内藏钢板,混凝土剪力墙,列阵栓钉,抗剪连接键

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Abstract:

为研究带栓钉抗剪键钢板在混凝土剪力墙中的锚固性能,进行了18个配置列阵栓钉抗剪键的内藏钢板混凝土墙板试件在单调连续加载下的推出钢板试验研究.试件设计中考虑了栓钉的直径、长度和数量,混凝土墙体厚度,钢板厚度,墙体分布钢筋配筋率等参数.在试验基础上,分析了钢板与外包混凝土之间的抗剪切极限荷载和滑移、钢板及栓钉应变、试件破坏形态等,研究了此类墙板的受力特点与破坏模式以及栓钉配置方式对墙板协调工作性能的影响.试验研究表明:在栓钉抗剪键面积一定的情况下,采用较小直径栓钉并加密栓钉的列阵布置可明显提高墙体的抗剪切承载力,在一定条件下钢板厚度的变化对承载力影响较小,内藏钢板剪力墙墙板应满足一定的厚度要求,栓钉的栓杆长径比λ应大于等于4.提出了适于内藏钢板混凝土剪力墙体设置列阵栓钉抗剪键的抗剪切承载力简化计算方法.

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