一种锚索框架梁内力计算新方法及现场试验  

A New Method for Calculating the Internal Force of Anchor Frame Beam and Its Field Test

作　　者：李京榜 朱彦鹏[2,3] LI Jingbang;ZHU Yanpeng(School of Civil Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China;Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology,Lanzhou 730050,China;Northwest Center for Disaster Mitigation in Civil Engineering,Ministry of Education,Lanzhou 730050,China)

机构地区：[1]兰州工业学院土木工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州730050 [3]西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《兰州工业学院学报》2024年第1期89-94,共6页Journal of Lanzhou Institute of Technology

基　　金：甘肃省高校青年博士基金(2023QB-048);甘肃省住房与城乡建设厅科技攻关项目(JK2023-15)。

摘　　要：为使现有框架梁内力计算结果更加符合工程实际,采用理论计算及现场试验2种方法分析框架梁内力分布规律,考虑框架梁材料的非单一性给出了一种新的计算方法,引入实测弯矩计算方法对现场试验数据进行整理,并将试验结果与理论结果进行对比。结果表明:理论结果与试验结果所得框架梁弯矩的分布趋势基本一致;采用换算截面法求解梁的截面惯性矩,所得结果可以提升框架梁的抗弯能力,进而减小框架梁截面配筋率;锚固力是影响框架梁内力的一个重要因素,锚固力越大框架梁的弯矩越大。In order to make the calculation result of internal force of the existing frame beam more consistent with the engineering practice,two methods of theoretical calculation and field test are used to analyze the internal force distribution law of the frame beam.Considering the non-uniformity of frame beam material,a new calculation method is given,and the measured bending moment calculation method is introduced to organize the field test data,and the test results are compared with the theoretical results.The results show that the theoretical results of the distribution trend of the frame beam moment are consistent with the test results.The transformed section method is used to solve the inertia moment of the beam section,and the obtained results can improve the bending resistance of the frame beam and reduce the reinforcement ratio.The anchoring force is an important influencing factor of the internal force of the frame beam.The greater the anchorage force,the greater the bending moment of the frame beam.

关 键 词：锚索框架梁 换算截面法 内力分析 现场试验 

分 类 号：TU378[建筑科学—结构工程]