Hysteretic Behavior of Column Base Joints with Replaceable Shear Corrugated Plates

被引：0

作者：

Chao, Dou ^{[1
,2
]}

Yanke, Du ^{[1
]}

Xiao, Yang ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

[2] Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment, Beijing

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2024年 / 57卷 / 09期

基金：

中国国家自然科学基金;

关键词：

column base joint; corrugated plate; design method; hysteretic behavior; resilience;

D O I：

10.11784/tdxbz202310023

中图分类号：

学科分类号：

摘要：

The bottom column base in a conventional steel frame is prone to plastic damage under the action of an earthquake. To achieve the seismic resilience of steel frames,a novel type of column base joint with replaceable shear corrugated plates (CBCP joint)was proposed. By using the verified finite element modeling and analysis,a finite element model of the novel joint was established,and its hysteretic behavior, stress development and plastic damage distribution were studied under cyclic loading. The effects of parameters such as the corrugated plate’s width-to-height ratio bc/hc,height-to-thickness ratio hc/tc and corrugation ratio Ca/Cl as well as the axial compression ratio n of the steel column on the hysteretic behavior of CBCP joint were investigated. The values of key parameters were suggested,and a formula for the joint’s load-carrying capacity was also put forward. It is found that the hysteretic curve of the column base joint is full,showing a satisfying energy dissipation capacity. During the cyclic loading process,plastic deformation occurs mainly on the corrugated plates while other components remain elastic, indicating that the column base joint can be quickly repaired by replacing the damaged corrugated plates after earthquake. The parametric analysis shows that the width-to-height ratio bc/hc and height-to-thickness ratio hc/tc have significant effects on the load-carrying capacity and hysteretic behavior of the column base joint. It is suggested that the corrugated plates with 0.5≤bc/hc<1.0 and hc/tc≤90 should be used in the preliminary design. Meanwhile,the ultimate load-carrying capacity provided by steel plates should not exceed the sectional edge-yielding load of the steel column,so that the steel column will not yield. Increasing the axial compression ratio n of the steel column can aggravate the P-Δ effect and significantly reduce the load-carrying capacity,resulting in the recommended value n≤0.4. Comparatively,the corrugation ratio Ca/Cl has an insignificant effect on the hysteretic behavior of the column base joint,which is suggested to take 0.1≤Ca/Cl≤0.2 in the common range. In general,the CBCP joint has characteristics such as a high load-carrying capacity,a satisfying energy dissipation capacity and damage control capability,with which the goal of reduced structural damage and resilience after earthquake can be achieved through a reasonable design. © 2024 Tianjin University. All rights reserved.

引用

页码：935 / 946

页数：11

共 23 条

[1]

GB 50011—2010 Code for Seismic Design of Buildings, (2016)

[2]

Lu Xilin, Chen Yun, Mao Yuanjun, New concept of structural seismic design:Earthquake resilient structures, Journal of Tongji University(Natural Science), 39, 7, pp. 941-948, (2011)

[3]

Zhou Ying, Lu Xilin, State-of-the-art on rocking and self-centering structures, Journal of Building Structures, 32, 9, pp. 1-10, (2011)

[4]

Ramirez C M, Miranda E., Significance of residual drifts in building earthquake loss estimation, Earthquake Engineering & Structural Dynamics, 41, 11, pp. 1477-1493, (2012)

[5]

Lu Xilin, Zhou Ying, Chen Cong, Research progress on innovative earthquake-resilient structural systems, Earthquake Engineering and Engineering Dynamics, 34, 4, pp. 130-139, (2014)

[6]

Lu Xilin, Quan Liumeng, Jiang Huanjun, Research trend of earthquake resilient structures seen from 16WCEE, Earthquake Engineering and Engineering Dynamics, 37, 3, pp. 1-9, (2017)

[7]

Zhang Guowei, Zhao Ziwei, Sun Zuoshuai, Review on the seismic behavior of self-centering structure, Building Structure, 48, pp. 463-470, (2018)

[8]

Zhou Ying, Wu Hao, Gu Anqi, Earthquake engineering:From earthquake resistance,energy dissipation, and isolation,to resilience, Engineering Mechanics, 36, 6, pp. 1-12, (2019)

[9]

Borzouie J, MacRae G A, Chase J G, Et al., Experimental studies on cyclic performance of column base weak axis aligned asymmetric friction connection, Journal of Constructional Steel Research, 112, pp. 252-262, (2015)

[10]

Liu Y, Guo Z X, Liu X J, Et al., An innovative resilient rocking column with replaceable steel slit dampers: Experimental program on seismic performance[J], Engineering Structures, 183, pp. 830-840, (2019)

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