摘要
考虑吊索弯曲刚度和两端固定边界条件的影响,引入参数简化吊索张力与其横向振动频率之间关系的超越方程,采用数值计算和曲线拟合的方法,推导出了考虑吊索弯曲刚度和吊索两端边界条件影响的,由吊索振动频率计算吊索张力的实用计算公式,并将该公式运用于下承式拱桥施工现场吊索张力的测定。通过与现场实测数据的比较表明:该公式具有较高的精度和一定的实用价值。
The influences of the flexural stiffness and fixed boundary conditions of the two built-in ends of suspenders were both considered. The transcendental equation reflecting the relationship between the suspender tension and its transverse vibration frequency was simplified through introducing parameters, and then the means of numerical calculation and curve fitting were adopted to get the practical calculating formulae of the suspender tension calculated with transverse vibration frequency considering influences of bending rigidity and two built-in ends of suspenders. Compared with measured data in field, the practical calculating formulae of suspender tension measurement have high precision of calculation through the practical verification of construction job site of a through arch bridge and practical value.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2007年第3期66-70,共5页
China Journal of Highway and Transport
基金
河南省自然科学基金项目(0411052900)
关键词
桥梁工程
中、下承式拱桥
振动法
吊索张力
bridge engineering
half-through and through arch bridge
vibration method
suspender tension
