自攻钉集块连接T形边框混凝土肋格复合墙板抗震性能试验

曹万林, 郝煜, 杨兆源, 董宏英, 刘亦斌

结构工程师 ›› 2024, Vol. 40 ›› Issue (2) : 126-135.

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PDF(2253 KB)
结构工程师 ›› 2024, Vol. 40 ›› Issue (2) : 126-135.
试验研究

自攻钉集块连接T形边框混凝土肋格复合墙板抗震性能试验

  • 曹万林, 郝煜, 杨兆源*, 董宏英, 刘亦斌
作者信息 +

Experimental Study on Seismic Behavior of T-Shaped Column Concrete Ribbed Wall with Self-Tapping Nails Connection

  • CAO Wanlin, HAO Yu, YANG Zhaoyuan*, DONG Hongying, LIU Yibin
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摘要

研发了混凝土框架(桁架)肋格填充发泡混凝土墙板,提出了T形边框与混凝土肋格复合墙板边肋的自攻钉集块连接构造。设计并制作了2个足尺自攻钉集块连接T形边框混凝土肋格复合墙板试件,包括1个十字形框架肋格墙板试件和1个人字形支撑桁架肋格墙板试件。进行了低周反复荷载试验,研究了各试件的破坏状态和滞回特性,分析了不同肋格构造对承载力、刚度、变形能力及耗能性能的影响。结果表明:十字形框架肋格墙板试件主要发生了发泡混凝土填充墙板及硬化砂浆面层的剪切开裂,人字形支撑桁架肋格墙板的破坏特征为混凝土桁架支撑的损伤失效;人字形支撑桁架肋格墙板试件的承载力和初始刚度相比十字形框架肋格墙板试件分别提高了74.3%和69.0%;十字形框架肋格墙板试件则具有较高的变形能力和耗能性能;自攻钉集块连接构造连接性能可靠,保证了T形边框与混凝土肋格复合墙板的协同变形。可为工程设计与施工提供参考。

Abstract

A concrete frame (truss) ribbed wall filled with foam concrete was developed and the self-tapping nail connection between the T-shaped column and the ribbed wall was proposed. Two full-scale T-shaped column concrete ribbed wall with self-tapping nails connection specimens were designed and fabricated, included a cross-shaped frame rib wall specimen and a central bearing truss rib wall specimen. Low cyclic loading test was carried out to study the failure modes and hysteretic characteristics. The effects of different rib structures on bearing capacity, stiffness, deformation capacity and energy dissipation were analyzed. The results showed that the shear cracking of foamed concrete and the hardened mortar layer occurred in the cross-shaped frame rib wall specimens, and the failure characteristics of central bearing truss rib wall were the concrete cracking and steel bar fractured. Compared with the ribbed wall specimen, the bearing capacity and initial stiffness of the ribbed truss wall specimen increased by 4.3% and 69.0%, respectively. The displacement capacity and energy dissipation of the ribbed wall specimen was better than central bearing truss rib wall. The self-tapping nails connecting had good connection behavior, which ensured the coordinated deformation of T-shaped column and concrete ribbed wall. This research can provide reference for engineering design and construction.

关键词

装配式剪力墙结构 / 混凝土肋格复合墙板 / 自攻钉集块 / 抗震性能 / 试验研究

Key words

prefabricated shear wall structure / concrete ribbed wall / Self-tapping nails connecting / seismic performance / experimental research

引用本文

导出引用
曹万林, 郝煜, 杨兆源, 董宏英, 刘亦斌. 自攻钉集块连接T形边框混凝土肋格复合墙板抗震性能试验. 结构工程师. 2024, 40(2): 126-135
CAO Wanlin, HAO Yu, YANG Zhaoyuan, DONG Hongying, LIU Yibin. Experimental Study on Seismic Behavior of T-Shaped Column Concrete Ribbed Wall with Self-Tapping Nails Connection. STRUCTURAL ENGINEERS. 2024, 40(2): 126-135

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国家自然科学基金面上项目(52378116)
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