斜转正桥梁梁格分析  

Analysis of the Skew and Orthogonal Bridge with the Beam Grid Method

作　　者：李江龙[1] 

机构地区：[1]北京市市政工程设计研究总院有限公司,100082

出　　处：《特种结构》2017年第3期99-101,114,共4页Special Structures

摘　　要：斜转正桥梁是桥梁设计中经常用到的结构。本文通过分析一座实际宽幅斜转正现浇预应力混凝土连续梁桥,为类似桥梁的设计和分析方式提出建议。本文采用梁格法分析单箱多室斜转正桥梁各腹板应力,文中采用了两种梁格布置形式,通过对比两种梁格的计算结果,结合桥梁横向钢筋布置形式,分析单箱多室斜转正桥梁应力分布规律。根据分析结果,提出这类桥梁的设计中关于预应力钢筋、普通钢筋布置及计算分析的几点建议,可为类似工程提供参考和借鉴。The skew and orthogonal bridge is often used in bridge design. Some suggestions for design and analysis of similar bridges were put by analyzing a real skew and orthogonal cast-in-place prestressed concrete continuous beam bridge. The stress of each webs of single-box multi-cell girder skew and orthogonal bridge was analyzed with the beam grid method in this article. Two kinds of beam grid method were used in this paper, and according to the arrangement of transverse reinforcement, the stress distribution of single-box multi-cell girder skew and orthogonal bridge was analyzed by comparing the results of the two beam grid. Some suggestions about calculation and arrangement of prestressed bar and common bar in the design were presented, it can be used as reference for similar projects.

关 键 词：梁格法 斜转正桥梁 正交模型 正应力 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]