|本期目录/Table of Contents|

[1]戴志伟,方海,刘伟庆,等.考虑墩顶约束作用的桥墩船撞力学模型及其响应[J].南京工业大学学报(自然科学版),2020,42(03):366-372.
 DAI Zhiwei,FANG Hai,LIU Weiqing,et al.A mechanical model and analysis of the ship-bridge collision system considering the pier top constraint effect[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(03):366-372.
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考虑墩顶约束作用的桥墩船撞力学模型及其响应()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年03期
页码:
366-372
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
A mechanical model and analysis of the ship-bridge collision system considering the pier top constraint effect
文章编号:
1671-7627(2020)03-0366-07
作者:
戴志伟方海刘伟庆韩娟孙慧明
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
DAI Zhiwei FANG HaiLIU WeiqingHAN JuanSUN Huiming
College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
船桥碰撞 桥墩 墩顶约束 船撞力 墩顶位移
Keywords:
ship-bridge collision bridge pier constraint at pier top ship collision force displacement at pier top
分类号:
TU997
文献标志码:
A
摘要:
在考虑上部主梁对桥墩墩顶约束及基础约束作用的基础上,建立了边界条件合理的船舶与桥墩撞击理论力学模型,采用Laplace正变换和Crump逆变换,对该动力控制微分方程进行理论求解并分析撞击力与位移响应。将理论计算结果与欧洲规范以及未考虑墩顶约束的悬臂墩模型计算值进行了比较,结果表明考虑被撞桥墩墩顶受上部结构的约束作用对撞击响应的影响较为显著。分析上部主梁结构等效约束刚度与被撞桥墩船撞力及墩顶位移的关系并与欧洲规范和铁路规范进行了比较。建立了峰值撞击力简化计算公式,该公式在欧洲规范的基础上增加考虑了桥墩侧向刚度、船舶质量及船艏刚度等因素,与其他规范公式在改变不同参数的情况下进行了比较,验证了其具有较好的适用性。
Abstract:
Considering the effect of the constraint at pier top, the mechanical model of ship-bridge collision system was established using Laplace forward transformation and Crump inverse transformation. The dynamic control differential equation was solved theoretically, and the impact force and displacement response were analyzed. The analytical results were compared with those of European standard and cantilever pier model, the results showed that the influence of the superstructure on the pier impact response was significant. The relationship between the equivalent constraint stiffness of the upper main beam structure and the collision force of the impacted pier and the displacement of the pier top was analyzed, and the results were compared with European code and railway code. A simplified calculating formula for peak impact force was proposed. Based on the European standard, this formula considered the stiffness of bridge pier, different tonnage and the ship with different bow stiffness, hence it had more general applicability.

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备注/Memo

备注/Memo:
收稿日期:2019-12-30
基金项目:国家自然科学基金(51778285); 江苏省杰出青年基金(BK20190034); 湖南省交通运输厅科技进步与创新项目(201916)
作者简介:戴志伟(1995—),男,E-mail:daizw1218@126.com; 方海(联系人),教授,E-mail:fanghainjut@163.com.
引用格式:戴志伟,方海,刘伟庆,等.考虑墩顶约束作用的桥墩船撞力学模型及其响应[J].南京工业大学学报(自然科学版),2020,42(3):366-372.
DAI Zhiwei, FANG Hai, LIU Weiqing, et al. A mechanical model and analysis of the ship-bridge collision system considering the pier top constraint effect[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(3):366-372..
更新日期/Last Update: 2020-05-31