中穿H型钢冠梁截面削弱影响研究  

Study on the influence of section weakening of reinforced concrete crown top beam through H steel

作　　者：黄志波[1] 林奇[2] 郑春婷 HUANG Zhibo LIN Qi ZHENG Chunting(College of Jinshan, Fujian Agriculture and Forestry University, Fuzhou 350002 College of Civil Engineering, Fujian University of Technology, Fuzhou 350118 Fujian Jianzhuan geotechnical engeering co. ltd, Fuzhou 350002)

机构地区：[1]福建农林大学金山学院,福建福州350002 [2]福建工程学院土木工程学院,福建福州350108 [3]福建省建专岩土工程有限公司,福建福州350002

出　　处：《福建建筑》2017年第8期76-80,共5页Fujian Architecture & Construction

基　　金：福建省中青年教师教育科研项目(JA15641);福建省大学生创新创业训练计划项目(201614046022)

摘　　要：研究由于中穿H型钢导致的截面削弱对混凝土冠梁受力变形的影响,对揭示中穿H型钢混凝土冠梁的受力变形特征及完善其设计理论具有重要意义。采用midas有限元软件分别建立中穿H型钢冠梁和实体混凝土冠梁的有限元模型,对比分析其在受力变形的异同点。研究表明:中穿H型钢混凝土冠梁在荷载作用下,其位移及应力比实体混凝土冠梁的大。中穿H型钢混凝土冠梁与实体混凝土冠梁的应力分布形式有明显的不同。因此在设计时需考虑中穿H型钢对混凝土的削弱作用。Study on the section weaked by through H steel that cause the influence of forced deformation of concrete top beam. It have the important meaning,which can reveal the stress and deformation characteristics of section weakening top beam and improve the design method and theory. By using Midas finite element software to establish the model of the simply supported top beam through H steels,some problems of the design process were analyzed. The results show that the displacement and stress of the H steel reinforced concrete crown beam are larger than that of the concrete crown beam under load; the stress distribution of the H steel reinforced concrete crown beam and concrete crown beam is obviously different. Therefore,it is necessary to consider the weakening effect of H steel in concrete design.

关 键 词：H型钢 截面削弱 冠梁 迈达斯 

分 类 号：TU4[建筑科学—土工工程]