某特大桥部分预应力混凝土 连续梁0# 块空间分析

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摘要本文阐述应用SUPER SAP软件对跨度为72+ 5× 116+ 72 m的广珠铁路西江特大桥部分预应力混凝土连续梁0# 块空间分析的方法与结果;从中发现: 在0# 支座附近和施加预应力后在箱梁顶板局部区域的外缘,都有较大的拉应力。这个结果在传统的三维杆系有限元分析中是不可能得到的。最后,针对这一发现提出相应的工程措施。

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Abstract：The span of the West-Riv er ex t ra-lo ng bridg e o n the Guang-Zhu Railw ay i s 72+ 5 × 116+ 72m, w hich w as built wi th the partial prest ressed concrete continuous beams. By applying the SUPER S AP sofew are, the pa per ex pounds the method and the result of the spatial analy sis fo r the No. O block of these beams. It i s found tha t there w ere much hig her tensio nal stress nea r the No. O suppo rt , and af ter the prestress being applied, a t the outside edg e o f the local regio n on the to p pla te of the box beams. By t raditional 3D fini te element analysis, it i s impossible to obtain these resul ts. Finally , the co rresponding engineering measures are proposed.

Key words： SU PER SAP quasi-high-speed railw ay prest ressed co ntinuous beam block spa tial analysis

收稿日期: 1998-03-05

作者简介: 裴若娟　副教授　华中理工大学　武汉　邮编: 430074

引用本文:

裴若娟，谢洪阳，金福海. 某特大桥部分预应力混凝土连续梁0# 块空间分析[J]. 铁道工程学报, 1998, 15(2): 47-56.
Pei Ruojuan　Xie Hongyang. SPATIAL ANALYSIS ON No. BLOCK OF PARTIAL PRESTRESSED CONCRETE CONTINUOUS BEAMS FOR A EXTRALONG BRIDGE. Journal of Railway Engineering Society, 1998, 15(2): 47-56.

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http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y1998/V15/I2/47