体外预应力梁振动特性的分析与研究  

Analysis and research of externally prestressed concrete beam vibration behavior

作　　者：熊学玉[1] 王寿生[1] 

机构地区：[1]同济大学预应力研究所,上海200092

出　　处：《地震工程与工程振动》2005年第2期55-61,共7页Earthquake Engineering and Engineering Dynamics

摘　　要：本文分析了体外预应力混凝土梁在动力荷载作用下的振动特性。对AyahoMiyamoto给出的公式进行了修正和扩充,推导出包括单折线型、双折线型、直线型3种线型布置下的体外预应力混凝土简支梁的自振频率计算公式,针对各种因素对体外预应力混凝土梁振动频率的影响加以探讨,提出一些体外预应力梁体系防振动的有效措施。Some vibration issues of externally prestressed concrete beams under dynamical loads are discussed in the paper. The formula presented by Ayaho Miyamoto is improved and extended. Some formulae for frequency calculation are given when external tendons are arranged in three different configurations. Many factors are considered in the analysis of the beam vibration frequency, and some effective antivibration measures are provided in the end.

关 键 词：体外预应力 振动 频率 疲劳 结构设计 

分 类 号：P315.96[天文地球—地震学]