半整体桥梁近台端搭板的受力性能分析
PDF下载 (295)庄一舟,韩裕添,吕骅昕,田 伟.半整体桥梁近台端搭板的受力性能分析[J].宁波大学学报(理工版),2015,28(03):57-62.DOI:
ZHUANG Yi-zhou,HAN Yu-tian,L? Hua-xin,TIAN Wei.Research: Mechanical Behavior of Approach Slab Near Abutment in Semi-integral Bridge[J].Journal of Ningbo University(Natural Science & Engineering Edition),2015,28(03):57-62.DOI:
| Title: | Research: Mechanical Behavior of Approach Slab Near Abutment in Semi-integral Bridge |
| 作者: | 庄一舟, 韩裕添, 吕骅昕, 田 伟 |
| Author(s): | ZHUANG Yi-zhou, HAN Yu-tian, L? Hua-xin, TIAN Wei |
| 关键词: | 半整体桥梁; 搭板; 影响系数; 叠加作用 |
| Keywords: | semi-integral bridge; approach slab; influence coefficient; additive effects |
| 分类号: | U442.5 |
| 文献标识码: | A |
| 摘要: | 传统的有缝桥梁, 由于桥台伸缩缝的存在, 使搭板不受主梁伸缩、挠曲变形的影响, 然而半整体桥梁取消了桥台伸缩缝, 其需考虑上述影响. 为了分析半整体桥梁近台端搭板端部的内力影响程度, 首先应用ABAQUS/MIDAS建模, 得出端部水平力对搭板的内力影响最大; 其次 提出影响系数的概念, 即搭板顺桥向任意截面的端部水平拉应力与竖向荷载作用产生的拉应力的比值; 最后分析了搭板顺桥向控制截面的影响系数. 结果表明: 半整体桥梁近台端搭板端部的水平力在内力计算中不容忽视, 搭板设计需综合考虑竖向荷载和端部水平力的叠加作用. |
| Abstract: | The expansion joint exists in the traditional joint bridge abutment, so the approach slab is not affected by the expansion and deflection deformedand with main girder. However the semi-integral bridge does not use the expansion joint of bridge abutment, therefore the resultant effects is needed to take into consideration. In order to analyze the loading force in approach slab near the abutment in semi-integral bridge, the ABAQUS is used and the MIDAS is adopted. It concludes that the greatest impact on the approach slab near the abutment is the horizontal end force. In this work, the concept of influence coefficient is introduced, which involves the ratio of tensile stress between the horizontal force in approach slab and the vertical loads. The influence coefficient in each section of an approach slab is analyzed. The research results show that the end horizontal force in approach slab near the abutment of a semi-integral bridge should not be ignored in the calculation of internal forces in approach slab, and the approach slab design needs taking into consideration both the vertical loading and the side effect from the end horizontal force in slab |
| 参考文献 /References: | [1].AASHTO. AASHTO-LRFD bridge construction specifi cations[M]. Washington D C: American Association of State Highway and Transpertation Officials, 1998:22-32. [2].陈志新. 无缝桥梁加筋接线路面温度变形性能研究与施工要点分析[D]. 长沙: 湖南大学, 2010. [3].Greimann L F, Wolde-Tinase A M.Design model for piles in jointless bridges[J]. Journal of Structural Engineering, 1988, 114(6):1354-1371. [4].Greimann L F, Pe-Shen Y, Wolde-Tinase A M. Nonlinear analysis of integral abutment bridges[J].Journal of Structural Engineering, 1986, 112(10):2263-2280. [5].Murat D. Simplified model for computer-aided analysis of integral bridges[J]. ASCE, Journal of Bridge Engineering, 2000, 15(3):240-248. [6].陈朝慰. 无伸缩缝桥梁桥台与主梁的结点构造及受力性能研究[D]. 福州: 福州大学, 2003. [7].杜永超. 半整体式全无缝桥梁的适应性及在弯桥上的研究与应用[D]. 长沙: 湖南大学, 2011. [8].王天利. 半整体式桥台无缝桥梁研究[D]. 西安: 长安大学, 2003. [9].中华人民共和国交通运输部. 公路水泥混凝土路面设计规范(JTG D40-2011)[M]. 北京: 人民交通出版社, 2011:45-48. [10].中华人民共和国交通运输部. 公路桥涵地基与基础设计规范(JTG D63-2007)[M]. 北京: 人民交通出版社, 2007:75-85. |
| 备注/Memo: | 收稿日期: 2014?12?13. 宁波大学学报（理工版）网址http://journallg.nbu.edu.cn/基金项目: 国家自然科学基金（51278126）; 福建省自然科学基金2013J01187）.第一作者: 庄一舟（）, , 浙江奉化人, 博士/教授, 主要研究方向: 桥梁工程tianyuhyt@163.com桥头搭板可滑动面 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
