套管钢筋混凝土柱结构的发展和展望

DEVELOPMENT AND PROSPECTS OF TUBED REINFORCED CONCRETE COLUMN STRUCTURES

回顾了套管钢筋混凝土柱的发展过程。在套管钢筋混凝土柱中 ,套管用作柱中的横向增强 ,主要起约束和抗剪作用。Tomii和作者等人在 1985年首次提出套管柱的概念 ,并验证了套管柱能够有效防止柱的剪切破坏并显著提高柱的延性。随后 ,这一概念被推广到利用焊接钢管和纤维增强塑料外包壳加固既存钢筋混凝土柱。本文还展望了使用纤维增强塑料套管进行新建柱设计的研究。

The developmental process of tubed reinforced concrete column structures is reviewed.The steel tube in the tubed reinforced concrete column is primarily used to confine and to take effects of shearing resistance as the transvers reinforcement for columns.The concept of tubed column was first introduced by Tomii and others in 1985,and which had been proved to be very effective to prevent shear failure,as well as to raise the ductility of reinforced concrete columns.Later,this concept is expanded to strengthen the existing reinforced concrete columns using both the welded steel tubes and fiber reinforced plastics (FRP)reinforced jackets.The prospects for future research on the new design of FRP tubed reinforced concrete column is presented.