圆钢管地聚物砖骨料再生混凝土柱滞回性能及恢复力模型研究

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关键词：再生砖骨料；地聚物砖骨料再生混凝土；钢管混凝土；抗震性能；恢复力模型中图分类号： TU352.1+1 ;TU528.41 文献标志码：A 文章编号：1000-0844（2026）01—0015—11

Hysteretic behavior and restoring force modeling of geopolymer recycled brick aggregate concrete-filled circular steel tube columns

YAN Guiyun 1，2 ，HUANG Lihang²，XU L 1，2 ，LIU Xiancheng²，XU Liwei 1，2

（1.Fujian Provincial Key Laboratory of Aduanced Technology and Informatization in Ciuil Engineering，Fuzhou ，Fujian，China; 2.School of Civil Engineering，Fujian University of Technology，Fuzhou 35Ol18，Fujian，China）

Abstract： To comprehensively utilize construction waste bricks and industrial byproducts， a geopolymer recycled brick aggregate concrete-filld circular steel tube （GRBCFT） column is proposed.Four GRBCFT column specimens were subjected to cyclic lateral loading tests， varying brick aggregate replacement ratios and steel tube thicknesses as experimental parameters. These tests were followed by a parametric analysis using the finite element method. The results indicate that（1）GRBCFT columns failed in a compression-flexure mode，characterized by steel tube buckling at the base and crushing of the geopolymer recycled brick aggregate concrete; （2） specimens exhibited favorable deformation capacity，with ultimate drift ratios ranging between 4.5% （204号 and 6.1% ；（3） the brick aggregate replacement ratio had limited impact on the lateral bearing capacity，with an increase from 30% to 70% causing only a 5.3% reduction in peak lateral bearing capacity;and （4） lateral bearing capacity and ductility decreased rapidly when the axial compression ratio exceeded O.4.A restoring force model describing the relationship between lateral load and drift ratio was developed based on experimental and numerical results，accurately predicting the hysteretic behavior of GRBCFT columns under lateral loading.

Keywords： recycled brick aggregate;geopolymer recycled brick aggregate concrete;concrete-filled steel tube;seismic performance;restoring force model

0 引言

城市建设伴随着大批旧建筑拆迁，导致大量的废弃黏土砖堆积，侵占土地资源并造成环境污染[1]同时，混凝土作为大宗商品，需要消耗大量的碎石骨料。（剩余12461字）