大直径缓粘结预应力钢绞线摩擦损失试验研究  

Experimental study on the friction loss of major diameter retard-bonded prestressed steel strands

作　　者：陈尚志 李佩勋 蒋方新 刘运 Chen Shangzhi;Li Peixun;Jiang Fangxin;Liu Yun(China Academy of Building Research,Beijing 100013,China;China Building Technique Group Co.Ltd,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]中国建筑技术集团有限公司,北京100013

出　　处：《建筑科学》2022年第3期97-102,共6页Building Science

基　　金：中国建筑科学研究院有限公司科研基金项目(20181802330730041)。

摘　　要：本文通过对15.2mm、17.8mm、21.8mm和28.6mm四种直径缓粘结预应力钢绞线摩擦损失张拉试验,得到了不同直径缓粘结预应力钢绞线摩擦损失特征及摩擦损失系数。结合理论分析,明确提出了大直径缓粘结预应力钢绞线摩擦系数κ和μ的设计取值建议,为工程实践提供设计依据。In this paper, the friction loss characteristics and friction loss coefficient of different diameter retard-bonded prestressed steel strands are obtained through the tension test of friction loss of 15.2 mm, 17.8 mm, 21.8 mm and 28.6 mm diameter retard-bonded prestressed steel strands. Combined with theoretical analysis, the design values of friction coefficient κ and μ of large diameter retard-bonded prestressed steel strand are proposed, which provides design basis for engineering practice.

关 键 词：大直径 缓粘结预应力 摩擦系数 试验研究 

分 类 号：TU394[建筑科学—结构工程]