基于静载试验的单梁承载能力评定分析  

Evaluation and Analysis of Bearing Capacity of Single Beam Based on Static Load Test

作　　者：黎力设 梁金志 林本虎 LI Lishe;LIANG Jinzhi;LIN Benhu

机构地区：[1]广西交建工程检测咨询有限公司,南宁530024

出　　处：《科技创新与应用》2024年第14期54-57,共4页Technology Innovation and Application

摘　　要：预制梁桥占据我国桥梁数量的极大比重,故而预制梁片质量的重要性不言而喻。该文以某预制梁桥的边梁为试验对象,通过静载试验对其进行应变、挠度等参数的测试及分析,从而评定其承载能力。结果表明,试验梁测试截面应变、挠度校验系数均小于1.0,其强度和刚度满足承载能力要求;试验梁相对残余应变、挠度均小于20%,试验梁处于弹性工作范围内;采用静载试验的方法可对单梁构件进行较为准确的承载能力评定,试验结果可为同类型构件的承载能力评定提供参考。Precast-girder bridges account for a large proportion of the number of bridges in our country,so the importance of the quality of precast girders is self-evident.In this paper,the side beam of a precast-girder bridge is taken as the object of the test,and its strain,deflection and other parameters are tested and analyzed by static load test,so as to evaluate its bearing capacity.The results show that the section strain and thecalibration coefficients of the deflection of the test beam are less than 1.0,and its strength and stiffness meet the requirements of bearing capacity;the relative residual strain and deflection of the test beam are less than 20%,and the test beam is within the elastic working range;the static load test method can be used to evaluate the bearing capacity of single beam members more accurately,and the test results can provide reference for the evaluation of bearing capacity of the same type of members.

关 键 词：静载试验 单梁构件 承载能力评定 预制桥梁 截面应变 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]