大桥独立墩柱防船撞方法计算分析
PDF下载 (857)何益勇.大桥独立墩柱防船撞方法计算分析[J].宁波大学学报(理工版),2012,25(03):101-104.DOI:
HE Yi-yong.Numeric Study on Crashworthy Pier to Protect Bridge Against Vessel Collision[J].Journal of Ningbo University(Natural Science & Engineering Edition),2012,25(03):101-104.DOI:
| Title: | Numeric Study on Crashworthy Pier to Protect Bridge Against Vessel Collision |
| 作者: | 何益勇 |
| Author(s): | HE Yi-yong |
| 关键词: | 桥梁防护; 船撞; 数值分析; 防撞设施 |
| Keywords: | bridge protection; vessel collision; numeric analysis; crashworthy device |
| 分类号: | U697 |
| 文献标识码: | A |
| 摘要: | 提出了一种采用独立墩柱作为大桥防船撞设施的设计方法. 基于弹性地基梁法及“m 法” 假定, 以平潭海峡大桥47 号桥墩设防为例, 在给定船舶撞击力的两种工况下, 采用Midas Civil 2006 软件对独立防撞墩结构的抗撞能力进行了有限元模拟分析. 计算分析结果表明: 在给定工 况下, 钢管桩的最大压应力和最大拉应力均小于结构材料的屈服极限, 独立防撞墩的强度均满 足抗撞要求, 即独立防撞墩可以选作为大型桥梁主桥桥墩和引桥桥墩防船撞设施. |
| Abstract: | This paper presents a design method using independent pier as the ship collision protection facilities. Taking NO.47 pier of Pingtan Strait Bridge as the case-study, and based on the method of elastically-based beam and the “m” hypothesis, we use the Midas-civil-2006 to study responses of the crashworthy device under the preset condition. The simulation results show that under the given condition, both the maximum compressive stress and maximum tensile stress of the steel pipe pier are less than the yield limit of the steel. The strength of protection piers satisfies the related technical requirements, and the scheme of crashworthy piers can be applied to protect a bridge against vessel collision. |
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| 备注/Memo: | 收稿日期: 2012?04?28. 宁波大学学报（理工版）网址: http://3xb.nbu.edu.cn 基金项目: 国家自然科学基金（10872101）; 福建省交通厅科研项目（201118）. 作者简介: 何益勇（1973－）, 男, 福建莆田人, 工程师, 主要研究方向: 路桥工程. E-mail: heyiyong73@163.com 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
