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（1 長安大學基建處， 西安 710064； 2 長安大學建筑工程學院， 西安 710061）
［摘要］采用統(tǒng)一強度理論，對碳纖維布(CFRP)和角鋼復合加固鋼管混凝土疊合柱的軸心受壓機理和約束模型進行分析，考慮CFRP和角鋼材料的特點及其對混凝土的約束作用，提出了復合加固鋼管混凝土疊合柱的軸心受壓承載力計算公式，并進行有限元數(shù)值模擬，將公式計算結果與有限元計算結果進行對比，驗證了該計算公式的正確性，并得出CFRP厚度、角鋼套箍指標以及統(tǒng)一強度理論參數(shù)b等因素對承載力的影響規(guī)律。該結果為此類復合加固鋼管混凝土疊合柱軸心受壓承載力的計算提供了一定的理論依據(jù)。
［關鍵詞］統(tǒng)一強度理論； 鋼管混凝土疊合柱； 碳纖維布； 角鋼； 復合加固
中圖分類號：TU398-9文獻標識碼：A文章編號：1002-848X(2018)17-0096-08
Analysis of axial compression bearing capacity of CFRP and angle steel composite reinforced concrete-filled steel tubular columns
Dai Yan1,2, Zhao Junhai2, Zhang Changguang2
(1 Department of Infrastructure Management, Chang′an University, Xi′an 710064, China; 2 School of Civil Engineering, Chang′an University, Xi′an 710061, China)
Abstract:The axial compression mechanism and constraint model of carbon fiber reinforced plastic(CFRP) and angle steel composite reinforced concrete-filled steel tubular columns were analyzed by unified strength theory. Considering the material characteristics of CFRP and angle steel and their restraining effects on concrete, the calculation formulae of axial compression bearing capacity of composite reinforced concrete-filled steel tubular columns was proposed and finite element numerical simulation was carried out. The comparisons between the calculation results and finite element calculations were carried out and the correctness of the theory formulae was verified. The effects rules of CFRP thickness, hoop index of angle steel and parameter b in the unified strength theory were obtained. The results provide a theoretical basis for the calculation of such composite reinforced concrete-filled steel tubular columns strengthened with both CFRP and angle steel.
Keywords:unified strength theory; concrete-filled steel tube reinforced concrete column; carbon fiber reinforced plastic(CFRP); angle steel; combination strengthening
*國家自然科學基金項目（41202191，51508028），陜西省社會發(fā)展科技攻關項目（2015SF272），陜西省自然科學基礎項目（2015JM4146），長安大學中央高?；究蒲袠I(yè)務費專項基金項目（2014G1281071， 310826161007）。
作者簡介：代巖，碩士，助理工程師，Email: daiyan1211@163.com。
