基于荷载试验检测的钢—混凝土组合梁桥承载力分析与评定
Analysis and Evaluation of Bearing Capacity of Steel-Concrete Composite Girder Bridge Based on Load Test Detection
杨李1
作者信息
- 1. 河北港口集团有限公司港口资产管理分公司,河北秦皇岛 066000
- 折叠
摘要
在长期荷载和环境的作用下,桥梁结构存在材料性能退化、结构失稳、承载能力降低的安全风险.以某钢—混凝土组合梁桥为例采用多种检测试验方法对桥梁的外观、材质、恒载变异状况、桥梁动力特性、静力特性进行检测,重点阐述了载荷试验过程中采用的相关方法及注意事项,测试获得的桥梁基频、主截面应力、应表和残余变形的测试结果真实反映出桥梁结构特性,为桥梁实际工作性能客观评价提供了有力支撑,为同类工程的实施提供了有益参考.
Abstract
Under the action of long-term load and environment,bridge structures have safety risks such as material performance degradation,structural instability,and reduced load-bearing capacity.This paper takes a steel-con-crete composite girder bridge as an example and uses a variety of detection and test methods to detect the appear-ance,material,dead load variation,dynamic characteristics,and static characteristics of the bridge.It focuses on the relevant methods used in the load test process and precautions.The test results of the bridge's fundamental fre-quency,main section stress,strain,and residual deformation truly reflect the structural characteristics of the bridge,provide strong support for the objective evaluation of the actual working performance of the bridge,and provide a useful reference for the implementation of similar projects.
关键词
钢—混凝土组合箱梁/自振频率/静载试验/动载试验、校验系数Key words
steel-concrete composite box girder/natural frequency/static load test/dynamic load test/calibration coefficient引用本文复制引用
出版年
2024
NETL
NSTL
万方数据