柱式桥墩盖梁内力计算方法探讨

重庆交通大学学报（自然科学版） ›› 2006, Vol. 25 ›› Issue (3): 9-12.

柱式桥墩盖梁内力计算方法探讨

胡东，胡免缢

重庆交通学院，重庆 400074

收稿日期:2005-04-25 修回日期:2005-05-13 出版日期:2006-06-15 发布日期:2015-05-18
作者简介:胡东(1975—)，男，重庆市人，工程师，主要研究方向为桥梁设计理论

A probe into the calculation method 011 coping's internal force of pillar pier

HU Dong， HU Mian-yi

Chongqing Jiaotong University，Chongqing 400074，China

Received:2005-04-25 Revised:2005-05-13 Online:2006-06-15 Published:2015-05-18

摘要/Abstract

摘要： 笔者阐述了两种不同计算图式下盖梁内力计算方法，并进行了对比分析．分析表明，当考虑立柱刚度影响时，盖梁内力将进行二次分配，致使跨中正弯矩减小、支点负弯矩增大(称之为“刚架效应”)，随着立柱与盖梁的线刚度比的增大，此种效应越显著．当立柱与盖梁的线刚度比较小时，可采用简化的双悬臂简支梁(连续梁)图式，但在支点截面应作适当的加强处理；而对于重要桥梁或立柱与盖梁的线刚度比较大的桥梁，宜采用双悬臂刚架结构图式进行计算．

关键词: 盖梁, 内力计算, 线刚度比, 剐架效应

Abstract: The paper sets forth the calculation method of coping’s internal force undertow different calculation graphic formulas and comparative analyses are made．As indicated in the analyses：the coping's internal force shall be quadrate allocated when the rigidity of the pillar is taken into account which leads to the diminution of middle span positive flexural torque and augment of fulcrum neglttive flexural torque (cauea Rigid Frame Effect).It goes priminently as the linear rigidity ratio of the pillar and coping increases.When the linear rigidity ratio is small，simplified twill-cantilever free beam(continuous beam)graphic formula shall be adopted whereas the fulcrum section shall be properly reinforeed；while to the important briages or briages with hrge linear rigidity ratio ofthe pillar and coping，twill-cantilevelr rigid-framed structure graphic formula shall be appropriately usedfor calculation.

Key words: coping, internal force calculation, linear rigidity ratio, rigid frame effect

中图分类号:

U443.22
U442

胡东，胡免缢. 柱式桥墩盖梁内力计算方法探讨[J]. 重庆交通大学学报（自然科学版）, 2006, 25(3): 9-12.

HU Dong， HU Mian-yi. A probe into the calculation method 011 coping's internal force of pillar pier[J]. Journal of Chongqing Jiaotong University(Natural Science), 2006, 25(3): 9-12.

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