配置600MPa钢筋的预应力混凝土梁受弯性能研究  

Experimental research on bending behavior of prestressed concrete beams with 600MPa steel bars

作　　者：戎贤 吴海超[1,2] 刘平 

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]河北工业大学河北省土木工程技术研究中心,天津300401

出　　处：《武汉大学学报（工学版）》2018年第2期139-143,共5页Engineering Journal of Wuhan University

基　　金：天津市自然科学基金项目(编号:12JCYBJC14100);河北省交通运输厅科技计划项目(编号:Y-2012041);河北省交通运输厅科技计划项目(编号:Y-2011052);河北省高等学校科学技术研究重点项目(编号:ZD2010123)

摘　　要：为研究配置600 MPa级高强钢筋有粘结部分预应力混凝土梁的受弯性能,在静力荷载作用下,进行了9根纵向受拉非预应力筋采用600 MPa级高强钢筋的试验梁受弯性能试验.对比分析试验梁的破坏特征、受力过程、受弯承载力、挠度等.研究结果表明：配置600 MPa级高强钢筋的后张法有粘结部分预应力混凝土梁和配置普通钢筋后张法有粘结部分预应力混凝土梁的受力性能相同;配置600 MPa级高强钢筋的试验梁的受弯承载力可以按照现行《混凝土结构设计规范》中相关公式计算.当600 MPa级高强钢筋取520 MPa的强度设计值时,采用现行规范计算配置600 MPa级高强钢筋的试验梁受弯承载力的安全储备较高.In order to investigate the flexural performance of the prestressed concrete beams with 600 MPa steel bars, nine post-tensioned bonded partially prestressed concrete simple supported beams with 600 MPa steel bars are tested under vertical static load. The failure characteristic, forced process, bending capacity and deflection of concrete beams are analyzed. It is shown that posttensioned bonded partially prestressed concrete beams with 600 MPa steel bars can work well as the common reinforced post-tensioned bonded partially prestressed concrete beams. The bending capacity of post-tensioned bonded partially prestressed concrete beams with 600 MPa steel bars can be calculated according to GBS0010-2010. When the yield strength of 600 MPa steel bars is 520 MPa, the bending capacity formula is safe for calculating reinforced concrete beams and with slight high reliability.

关 键 词：600 MPa级高强钢筋 预应力混凝土 受弯承载力 挠度 

分 类 号：TU375.1[建筑科学—结构工程]