摘要
公路桥梁建设中,中小跨径城市高架、高速公路广泛采用预制T梁桥,但对于斜交桥与采用弯桥直做工艺的小半径曲线梁桥,横隔梁无法对齐的问题普遍发生,导致大量二次病害产生,严重影响桥梁美观与使用安全。为解决以上问题,提出了一种采用K字型钢横隔梁替代混凝土横隔梁的预制T梁横向连接方案,采用通用分析软件Midas分析横隔梁传力性能,并针对钢横隔梁设计了新型预制T梁模板。结果表明,采用钢横隔梁方案替代传统混凝土横隔梁切实可行,新型模板实现T梁预制长度与横隔梁位置可调,安装精度高,可为其他类似工程提供参考。
Theprefabricated T-beam bridges are widely used in urban viaducts and expressways with small and medium-sized spansduring the construction of highway bridges.However,for skew bridges and small-radius curved beam bridges with direct construction technology of curved bridge,the problem that the diaphragm beams cannot be aligned generally occurs,resulting in a large number of secondary diseases,which seriously affects the beauty and use safety of the bridge.In order to solve the above problems,a kind of prefabricated T-beam transverse connection scheme using K-shaped steel diaphragm beam instead of concrete diaphragm beam is put forward.The general analysis software Midas is used to analyze the force transmission performance of diaphragm beam,and a kind of new prefabricated T-beam formwork is designed for steel diaphragm beam.The results show that,it is feasible to use the scheme of using steel diaphragm beam to replace the traditional concrete diaphragm beam.The new formwork can adjust the prefabrication length of T-beam and the position of diaphragm beam,with high installation accuracy,which can provide reference for other similar projects.
作者
董汉方
赵颖芳
陈光军
Dong Hanfang;Zhao Yingfang;Chen Guangjun(Zhejiang Changxing Transportation Investment Group Co.,Ltd.,Huzhou 313100,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《北方交通》
2021年第10期1-4,共4页
Northern Communications
基金
浙江省交通运输厅科技计划项目(2016018)。
关键词
预制T梁
钢横隔梁
模板
Prefabrication T-beam
Steel diaphragm beam
Formwork
