含内嵌卯口耗能器的榫卯节点抗震性能试验研究
作者:
作者单位:

南京工业大学 土木工程学院

作者简介:

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中图分类号:

TU366.2

基金项目:

国家自然科学基金(51678298);


Experimental study on seismic performance of mortise-tenon joint with embedded dampers
Author:
Affiliation:

Nanjing Tech University College of Civil Engineering

Fund Project:

The National Natural Science Foundation of China (51678298)

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    摘要:

    针对古建筑榫卯节点抗震加固和性能提升的需求,本文提出了采用内嵌卯口耗能器增强榫卯节点性能的技术,并制作了包括未增强、单层增强及双层增强的五组缩尺榫卯节点模型。通过开展抗震性能试验研究,对不同厚度、层数的卯口耗能器增强榫卯节点与未增强节点的抗震性能进行对比,分析了不同参数的卯口耗能器对榫卯节点抗震性能指标的影响。结果表明:内嵌卯口耗能器具有双向耗能、多点屈服、可设计性强等特点,可大幅提升榫卯节点的抗震性能,有效抑制节点的拔榫现象;耗能器的钢板厚度和层数是影响榫卯节点抗震性能的主要因素,且厚度对于耗能器加固榫卯节点力学性能的影响最大;双层耗能器较之于单层耗能器对于榫卯节点的加固性能更加卓越。

    Abstract:

    In response to the needs of seismic reinforcement and performance improvement of the mortise-tenon joint in Chinese ancient buildings, this paper proposes the use of embedded dampers to enhance the performance of the mortise-tenon joint and made five groups of scaled mortise-tenon joint models including unreinforced, single-layer reinforced embedded dampers and double-layer reinforced embedded dampers. Through the test research of seismic performance, the seismic performance of the mortise-tenon joints with different thickness and number of layers was compared with that of the joints without reinforcement, and the seismic performance of embedded dampers with different parameters on the joints of mortise-tenon was analyzed. The results show that the embedded dampers has the characteristics of two-way energy dissipation, multi-point yielding, and strong designability, which can greatly improve the seismic performance of the mortise-tenon joint and effectively suppress the joint phenomenon; the steel plate thickness and the number of layers of the embedded dampers are the main factors affecting the seismic performance of the mortise-tenon joint, and the thickness has the greatest impact on the mechanical properties of the mortise-tenon joint strengthened by the embedded dampers; the double-layer embedded dampers is more effective than the single-layer energy dissipator.

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  • 收稿日期:2021-07-08
  • 最后修改日期:2021-08-24
  • 录用日期:2021-08-30
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