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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年06期

页码:

12-21

栏目:

建筑结构

出版日期:

2025-11-25

文章信息/Info

Title:

Experimental study on seismic performance of recycled brick aggregate geopolymer concrete beam-column joint assembly

文章编号:

1673-2049(2025)06-0012-10

作者:

许力,陈俊,颜桂云,张鹏起,刘如月

(福建理工大学 土木工程学院,福建 福州 350118)

Author(s):

XU Li, CHEN Jun, YAN Guiyun, ZHANG Pengqi, LIU Ruyue

(School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, Fujian, China)

关键词:

再生砖骨料;  地聚物混凝土;  框架节点;  抗震性能

Keywords:

recycled brick aggregate;  geopolymer concrete;  frame joint;  seismic performance

分类号:

TU352.1

DOI:

10.19815/j.jace.2024.08101

文献标志码:

A

摘要:

为了综合利用建筑废弃黏土砖和工业废渣,提出了钢筋再生砖骨料地聚物混凝土(RRBGC)梁-钢管再生砖骨料地聚物混凝土(RBGCFT)柱框架结构体系,以再生砖骨料取代率和轴压比为研究参数,对4个RRBGC梁-RBGCFT柱边节点组合件进行低周往复荷载试验,分析其抗震性能。结果表明:梁柱节点组合件的破坏形态为梁铰机制破坏,梁端塑性铰具有良好的塑性变形能力,能够充分耗散能量; 砖骨料取代率r对梁柱节点组合件承载力和耗能影响不大,砖骨料取代率从0%增至50%和100%时,峰值荷载M_u分别降低3.2%和2.3%,累积耗能分别下降6.4%和16.3%; 尽管再生砖骨料显著降低了混凝土的弹性模量,但在正常使用阶段砖骨料取代率为50%和100%的试件,其刚度仅比取代率为0%的试件分别低12%和17%。

Abstract:

In order to comprehensively utilize building waste clay bricks and industrial waste, a reinforced recycled brick aggregate geopolymer concrete(RRBGC)beam-reinforced recycled brick aggregate geopolymer concrete-filled steel tube(RBGCFT)column frame structure system was proposed. Using the replacement rate of recycled brick aggregate and axial compression ratio as research parameters, low cyclic loading tests were conducted on four RRBGC beam-RBGCFT column edge joint assemblies to analyze their seismic performance. The results show that the failure mode of the beam-column joint assembly is the beam hinge mechanism failure, and the plastic hinge at the beam end has good plastic deformation ability and can fully dissipate energy. The replacement rate r of brick aggregate has little effect on the bearing capacity and energy dissipation of beam-column joint assembly. When the replacement rate of brick aggregate increases from 0% to 50% and 100%, the peak load M_u decreases by 3.2% and 2.3% respectively, and the cumulative energy dissipation decreases by 6.4% and 16.3% respectively. Although recycled brick aggregates significantly reduce the elastic modulus of concrete, the stiffness of specimens with brick aggregate replacement rate of 50% and 100% during normal use is only 12% and 17% lower than specimens with replacement rate of 0%, respectively.

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相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2024-08-27
基金项目:福建省自然科学基金项目(2023J05190,2023J01937); 福建省科技厅高校产学合作项目(2021Y4018); 福建省财政厅科技计划项目(GY-Z21005)
作者简介:许 力(1990-),男,工学博士,讲师,E-mail:xuli@fjut.edu.cn。
通信作者:颜桂云(1974-),男,工学博士,教授,博士生导师,E-mail:yanguiyun@sina.com。

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更新日期/Last Update: 2025-11-25