柱间系梁对双圆柱高墩受力影响研究
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摘要
通过对40m跨T梁50m高墩有限元分析,研究柱间系梁对双圆柱桥墩受力的影响。研究表明,设置柱间系梁对桥墩顺桥向稳定、强度及配筋无有利影响,其主要作用是改善桥梁下部结构横桥向受力,略减少盖梁配筋,增加施工、成桥及抗震的横桥向安全储备;然而,一般常规双圆柱排架式盖梁桥墩,采用沿截面周边均匀配筋,顺桥向受力控制墩柱结构及配筋设计,因此,可取消柱间系梁设置。
In this paper,through finite element analysis on 40m T beam for 50m high piers,research on the influence of stress of double cylindrical high piers by tie beams has been conducted.The results show that the tie beams have no beneficial effect on longitudinal stability,strength and reinforcement of high piers,and their main roles are on the improving of transverse load-carring of the double cylindrical high pier,which can slightly reduce cap beam reinforcement and need to increase transverse safety reservation on construction,completion and seismic status.However,considering uniform reinforcement arranged around sections,the longitudinal load-carring control high pier column structure and reinforcement design as in accordance with the conventional design for the double cylindrical trestle cap beam bridge high pier,the tie beams between the double cylindrical high pier can be cancelled.
In this paper,through finite element analysis on 40m T beam for 50m high piers,research on the influence of stress of double cylindrical high piers by tie beams has been conducted.The results show that the tie beams have no beneficial effect on longitudinal stability,strength and reinforcement of high piers,and their main roles are on the improving of transverse load-carring of the double cylindrical high pier,which can slightly reduce cap beam reinforcement and need to increase transverse safety reservation on construction,completion and seismic status.However,considering uniform reinforcement arranged around sections,the longitudinal load-carring control high pier column structure and reinforcement design as in accordance with the conventional design for the double cylindrical trestle cap beam bridge high pier,the tie beams between the double cylindrical high pier can be cancelled.
引文
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[3]周勇军,赵煜,贺拴海.系梁设置对高墩大跨弯连续刚构桥动力特性及地震响应的影响[J].应用基础与工程科学学报,2011,(19):608-617.
[4]鲁昌河,苏高裕,代希华,陈达章.英佛一级公路金坑大桥超高墩设计与施工[J].广东公路交通,2003,(79):32-36.
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[2]刘一波,李盛桢.无帽梁双柱式桥墩横系梁设置问题探讨[J].公路交通科技,2008,(4):1-7.
[3]周勇军,赵煜,贺拴海.系梁设置对高墩大跨弯连续刚构桥动力特性及地震响应的影响[J].应用基础与工程科学学报,2011,(19):608-617.
[4]鲁昌河,苏高裕,代希华,陈达章.英佛一级公路金坑大桥超高墩设计与施工[J].广东公路交通,2003,(79):32-36.
[5]陈达章,代希华,柯桂灵.崖门大桥引桥设计及高墩非线性分析[J].广东公路交通,2000,(66):16-18.
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