体外预应力连续梁振动特征的分析与研究

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (6) : 104-108.

论文

体外预应力连续梁振动特征的分析与研究

熊学玉1 2;高峰1 ;李阳1

作者信息 +

Analsis and research of externally prestressed concrete Continuous beam vibration behavior

XIONG Xue-yu1，2; GAO Feng1; LI Yang1

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文章历史 +

摘要

Ayaho Miyamoto推导双折线体外预应力简支梁固有频率、熊学玉等对其给出的公式进行修正和扩充，但其公式仅适用于简支梁。本文以两跨单（双）折线体外预应力梁为例，采用整体分析和拉普拉斯变换方法,研究了体外预应力连续梁的横向振动,推导出了频率方程和振型函数的解析表达式，推导过程适用于各种跨度的连续梁固有频率的计算。实测结果与公式计算误差为-2.8%，吻合较好，有利于指导实际工程

Abstract

The formula of natural frequency about double broken line externally prestressed concrete beam is derived by Ayaho Miyamoto and improved and extended by Xue-Yu Xiong, etc., but the formula only applies to simple beam. taken the two-cross single (double) broken line externally prestressed concrete beam for example in this paper, the transverse vibration of externally prestressed concrete beam is researched by the method of overall analysis and Laplace transform. And the frequency equation and analytical expression of mode shape function are induced. The inducing process can be used in the natural frequency calculations of continuous beam. The error of measured results between calculation results is -2.8%. Its results agree well, which is helpful to guide the actual project

导出引用

熊学玉;高峰;李阳. 体外预应力连续梁振动特征的分析与研究[J]. 振动与冲击, 2011, 30(6): 104-108

XIONG Xue-yu;GAO Feng;LI Yang. Analsis and research of externally prestressed concrete Continuous beam vibration behavior[J]. Journal of Vibration and Shock, 2011, 30(6): 104-108