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(1 太原理工大學(xué)土木工程學(xué)院， 太原 030024； 2 山西大學(xué)土木工程系， 太原 030013)
［摘要］空心鋼筋混凝土柱截面更擴展、自重較輕，常被用作高架橋墩、巨型框架柱等對穩(wěn)定性要求較高的結(jié)構(gòu)中。此類構(gòu)件一旦遭受側(cè)向撞擊，更加容易發(fā)生破壞。采用有限元分析方法，對內(nèi)配鋼筋與內(nèi)配鋼管兩種內(nèi)壁形式的圓截面空心混凝土柱在側(cè)向撞擊力作用下的破壞模式和動力響應(yīng)全過程等進行了分析，并開展了界面性能和空心率對其耐撞性能的影響分析。研究結(jié)果表明，內(nèi)壁采用鋼管的空心鋼筋混凝土柱較內(nèi)壁采用鋼筋的構(gòu)件，具有更良好的耐撞性，且內(nèi)壁鋼管與混凝土的界面性能、空心率對其耐撞性能影響顯著。
［關(guān)鍵詞］空心鋼筋混凝土； 內(nèi)襯鋼管； 側(cè)向撞擊作用； 動力響應(yīng)； 界面性能； 空心率
中圖分類號：TU398 文獻標識碼：A文章編號：1002-848X(2021)11-0094-08
Parameter analysis on dynamic response of hollow reinforced concrete columns under lateral impact
ZHANG Dongjie1, WANG Rui1, ZHU Xiang2, ZHAO Hui1
(1 College of Architecture and Civil Engineering, Taiyuan University of Technology， Taiyuan 030024， China；2 Department of Civil Engineering, Shanxi University， Taiyuan 030013， China)
Abstract: Hollow reinforced concrete (HRC) column, characterized by a more extended cross section and relatively light self-weight, has been extensively applied in the structure with high stability requirements such as viaduct piers and mega-frame columns, which would be vulnerable to the progressive collapse caused by lateral impact. The failure mode and dynamic response process of circular cross-section hollow concrete columns with two inner wall forms of internal steel bar and internal steel tube under lateral impact were analyzed based on the finite element analysis method, and the influence of bond-slip performance and hollow ratio on the impact performance of HRC members were discussed. The research results show that the members with internal steel tube have better performance than those with internal steel bars under lateral impact and the bond-slip performance between inner tube and concrete and hollow ratio have significant influence on the dynamic response of HRC columns under lateral impact.
Keywords:hollow reinforced concrete； inner tube； lateral impact； dynamic response； bond-slip performance； hollow ratio
*國家自然科學(xué)基金項目（51838008），山西省應(yīng)用基礎(chǔ)研究項目（優(yōu)秀青年基金項目201701D211006）。
作者簡介：張東杰，博士研究生，zhang_dj0809@163.com；通信作者：朱翔，博士，副教授，Email：zhuxiang@sxu.edu.cn。
