波形钢腹板简支组合梁扭转振动研究  

Experimental Research on Torsional Vibration of Simply Supported Composite Beams with Corrugated Steel Webs

作　　者：刘超星 崔海 李运生[2] Liu Chaoxing;Cui Hai;Li Yunsheng(China Railuay Major Bridge(NanJing)Bridge and Tunnel Inspect&Retorfit Co.,Ld,Nanjing 210061,China;Shijiazhuang Tiedao University,Shjiazhuang 050043,China)

机构地区：[1]中铁桥隧技术有限公司,江苏南京210061 [2]石家庄铁道大学,河北石家庄050043

出　　处：《市政技术》2021年第8期46-49,184,共5页Journal of Municipal Technology

基　　金：国家自然科学基金项目(51778377);河北省自然科学基金项目(E2018210149)。

摘　　要：为了精确计算波形钢腹板简支组合梁的扭转振动频率,基于波形钢腹板组合梁的力学特性,综合考虑约束扭转、剪切及约束翘曲的影响,运用能量变分法与Hamilton原理,推导了波形钢腹板简支组合梁的扭转振动控制微分方程,求得波形钢腹板简支组合梁的扭转振动频率计算公式。通过试验测试了其扭转振动频率与振型并将实测值与理论值进行对比,验证了理论推导公式的正确性。In order to accurately calculate the torsional vibration frequency of simply supported composite beams with corrugated steel webs,based on the mechanical properties of composite beams with corrugated steel webs, the effects of constrained torsional, shear and constrained warping are comprehensively considered. Its torsional vibration control differential equation is deduced by the energy variation method and the Hamilton principle. The calculation formula for the torsional vibration frequency is obtained. The torsional vibration frequency and mode shape are tested through experiments. Compared the actual measured value and the theoretical one, the correctness of the theoretical derivation formula are verified.

关 键 词：波形钢腹板 扭转振动 理论推导 模型试验 

分 类 号：U448.216[建筑科学—桥梁与隧道工程]