摘要
利用肇庆市某密索体系的独塔斜拉桥(双索面)作为为检测背景进行荷载试验,创建有限元模型进行静动力数值模拟计算,依据计算结果确定检测试验的具体试验工况,测量在试验荷载作用下测试断面的主梁变形、主梁应变、主塔偏位和自振频率等。通过对比理论值和实测值,分析该斜拉桥整体的结构强度和刚度,判定实际力学性能是否满足设计要求。
A single tower cable-stayed bridge(double cable plane)with dense cable system in Zhaoqing City was used as the detection background to carry out load test.The finite element model was created for static and dynamic numerical simulation calculation.According to the calculation results,the specific test conditions of detection test were determined,and the main beam deformation,girder strain,main tower deflection and natural vibration frequency of the test section were measured under the test load.By comparing theoretical value with measured value,the overall structural strength and stiffness of the cable-stayed bridge are analyzed to determine whether the actual mechanical properties meet the design requirements.
作者
卢的
黄人峰
邱建华
LU Di;HUANG Ren-feng;QIU Jian-hua(Sinohydro Bureau 14 Co.,Ltd.,Kunming 650041,China)
出处
《云南水力发电》
2020年第9期229-232,共4页
Yunnan Water Power
关键词
斜拉桥
荷载试验
有限元
校验系数
挠度
应变
cable-stayed bridge
load test
finite element
calibration coefficient
deflection
strain
