体外预应力梁自振频率的理论与实验研究  

THEORETICAL AND EXPERIMENTAL STUDY ON THE NATURE FREQUENCY OF EXTERNALLY PRESTRESSED BEAM

作　　者：张耀庭[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《铁道工程学报》2005年第2期34-37,共4页Journal of Railway Engineering Society

摘　　要：本文利用动力学原理推导了体外预应力简支梁的自振频率计算公式,并通过六根不同布筋方式的体外预应梁的动测试验,讨论了该公式的主要影响因素及实用性。A formula for calculating frequency of externally prestressed beam is derived from classical frequency equation with the influence of axial force and bending moment. In this paper, strengthening of six beams with simply supported ends by externally prestressing are experimentally investigated. The main influences and the practical feasibility about the formula discussed.

关 键 词：自振频率 实验研究 预应力梁 体外 预应力简支梁 动力学原理 计算公式 动测试验 布筋方式 实用性 

分 类 号：TU311.3[建筑科学—结构工程] TU378.2