随机车流作用下悬浮隧道车-隧耦合振动分析

林亨1,吴冬雁1,赵俊亮1,项贻强2

振动与冲击 ›› 2022, Vol. 41 ›› Issue (7) : 31-36.

PDF(2066 KB)
PDF(2066 KB)
振动与冲击 ›› 2022, Vol. 41 ›› Issue (7) : 31-36.
论文

随机车流作用下悬浮隧道车-隧耦合振动分析

  • 林亨1,吴冬雁1,赵俊亮1,项贻强2
作者信息 +

Vehicle-tunnel coupled vibration analysis of submerged floating tunnel under random traffic flow

  • LIN Heng1, WU Dongyan1, ZHAO Junliang1, XIANG Yiqiang2
Author information +
文章历史 +

摘要

悬浮隧道是面向未来交通设计的一种跨海结构物。为研究随机车流作用下水中悬浮隧道的车-隧耦合振动特性,基于不同车型、车间距和车速情况下的随机车流模型,分别采用蒙特卡洛法和有限单元法进行随机车流和悬浮隧道的理论建模。结合Morison方程和车辆位移协调关系,提出了车-隧耦合作用的分析单元,并对悬浮隧道车-隧耦合振动进行数值求解,通过统计分布的方法对计算结果进行讨论。计算结果表明:悬浮隧道在高流量的随机车流荷载作用下发生剧烈的车-隧耦合振动;悬浮隧道的L/4和L/2位置的加速度均方值arms服从正态分布的概率分布形式,且L/2位置受到更明显的随机车流荷载作用影响;降低断面锚索竖向刚度和增加锚索布置间距能够改善悬浮隧道的耦合振动竖向加速度幅值,但改善效果呈边际效应递减的趋势。

Abstract

Submerged floating tunnel (SFT) is a kind of cross-sea structure designed for future traffic. To study the vehicle-tunnel coupled vibration characteristics of SFT under the random traffic, the Monte Carlo method and finite element method are used to carry out the theories of random traffic flow and SFT respectively, considering the vehicle types, vehicle spacing and vehicle speed. Combining the Morison equation and the vehicle displacement coordinated relationship, an analytical element of the vehicle-tunnel coupled is proposed, and the vehicle-tunnel coupled vibration of SFT is numerically solved. The calculation results are discussed by the method of statistical distribution. The results show that the SFT has severe vehicle-tunnel coupled vibration under the high-volume random traffic load; the acceleration mean square value arms at the L/4 and L/2 positions of the SFT follows the normal distribution of probability distribution. In addition, the L/2 position is affected by the more obvious random traffic load; reducing the vertical tether stiffness or increasing the tether spacing can improve the vertical coupled vibration acceleration amplitude of SFT, but the improvement effect shows a trend of diminishing marginal effect.

关键词

悬浮隧道 / 随机车流 / 车-隧道耦合振动 / 蒙特卡洛法 / 加速度均方值

Key words

submerged floating tunnel / random traffic flow / vehicle-tunnel coupled vibration / Mento Carlo method / acceleration mean square value

引用本文

导出引用
林亨1,吴冬雁1,赵俊亮1,项贻强2. 随机车流作用下悬浮隧道车-隧耦合振动分析[J]. 振动与冲击, 2022, 41(7): 31-36
LIN Heng1, WU Dongyan1, ZHAO Junliang1, XIANG Yiqiang2. Vehicle-tunnel coupled vibration analysis of submerged floating tunnel under random traffic flow[J]. Journal of Vibration and Shock, 2022, 41(7): 31-36

参考文献

[1] 易壮鹏, 李小超, 曾有艺. 张力腿悬浮隧道的动力学模型和自振特性[J]. 中外公路, 2019, 39(1):190-194.
YI Zhuang-peng, LI Xiao-chao, ZENG You-yi. Dynamic model and natural vibration characteristics of tension leg submerged floating tunnel [J]. Journal of China & Foreign Highway, 2019, 39(01):190-194.
[2] Tariverdilo S, Mirzapour J, Shahmardani M, et al. Vibration of submerged floating tunnels due to moving loads[J]. Applied Mathematical Modelling, 2011, 35(11):5413-5425.
[3] 项贻强, 林亨, 陈政阳. 移动荷载作用下悬浮隧道动力响应分析[J]. 振动与冲击, 2018, 37(4):82-87.
XIANG Yi-qiang, LIN Heng, CHEN Zheng-yang. Dynamic response analysis of a submerged floating tunnel subjected to moving load[J]. Journal of Vibration and Shock, 2018, 37(4):82-87.
[4] Lin H, Xiang Y Q, Yang Y, et al. Dynamic response analysis for submerged floating tunnel due to fluid-vehicle-tunnel interaction[J]. Ocean Engineering, 2018, 166(15):290-301.
[5] 林亨, 项贻强, 陈政阳, 等. 轨道不平顺激励下悬浮隧道车隧耦合振动响应分析[J]. 振动与冲击, 2019, 38(1): 1-7,21.
LIN Heng, XIANG Yi-qiang, CHEN Zheng-yang, et al. Vehicle-tunnel coupled vibration responses of a submerged floating tunnel under excitation of track irregularities[J]. Journal of Vibration and Shock, 2019, 38(1): 1-7,21.
[6] 董满生, 张嫄, 唐飞, 等. 等间距移动荷载作用下水中悬浮隧道管体的位移响应[J]. 应用力学学报, 2016, 33(5):760-765.
DONG Man-sheng, ZHANG Yuan, TANG Fei, et al. Displacement response of submerged floating tunnel tube due to moving loads of constant intervals[J]. Chinese Journal of Applied Mechanics, 2016, 33(5):760-765.
[7] 何任飞, 袁勇, 贺维国,等. 固定支承式悬浮隧道在列车荷载下的竖向动力响应研究[J]. 铁道科学与工程学报, 2020, 017(1):167-173.
HE Ren-fei, YUAN Yong, HE Wei-guo, et al. Dynamic response analysis of submerged floating tunnel supported on columns under train load[J]. Journal of Railway Science and Engineering, 2020, 017(1):167-173.
[8] Jin C, Kim M H. Tunnel-mooring-train coupled dynamic analysis for submerged floating tunnel under wave excitations[J]. Applied Ocean Research, 2020(94):102-110.
[9] Calcada R, Cunha A, Delgado R. Analysis of Traffic-Induced Vibrations in a Cable-Stayed Bridge. Part I: Experimental Assessment[J]. Journal of Bridge Engineering, 2005, 10(4):370-385.
[10] 韩万水, 马麟, 汪炳, 等. 随机车流-桥梁系统耦合振动精细化分析与动态可视化[J]. 中国公路学报, 2013(4):78-87.
HAN Wan-shui, MA Lin, WANG Bing, et al. Refinement Analysis and Dynamic Visualization of Traffic-bridge Coupling Vibration System[J]. China Journal of Highway and Transport, 2013(4):78-87.
[11] 殷新锋, 邓露. 随机车流作用下桥梁冲击系数分析[J]. 湖南大学学报(自然科学版), 2015, 9:68-75.
YIN Xin-feng, DENG Lu. Impact Factor Analysis of Bridges under Random Traffic Loads[J],
Journal of Hunan University (Natural Sciences), 2015, 9:68-75.
[12] Lin H , Xiang Y , Chen Z , et al. Effects of marine sediment on the response of a submerged floating tunnel due to p- wave incidence[J]. Acta Mechanica Sinica, 2019, 35(4):773-785.
[13] Hong Y S, Ge F. Dynamic response and structural integrity of submerged floating tunnel due to hydrodynamic load and accidental load[J]. Procedia Engineering, 2010, 4:35-50.
[14] 王达, 刘扬, 黄平明. 随机车流作用下双曲拱桥车-桥耦合振动研究[J]. 中国公路学报, 2009, 22(6):67-73.
WANG Da, LIU Yang, HUANG Ping-ming. Research on Vehicle-bridge Coupled Vibration for Two-way Curved Arch Bridge under Random Traffic Flow[J]. China Journal of Highway and Transport, 2009, 22(6):67-73.
[15] 吴冬雁. 考虑荷载随机性影响的桥梁振动及噪声环境研究[D]. 杭州: 浙江大学, 2014.
WU Dong-yan. Research on Bridge Vibration and Acoustic Radiation under Stochastic Excitation[D]. Hangzhou: Zhejiang University, 2014.
[16] Leong H J W. The distribution and trend of free speeds on two-lane two way rural highways in New South Wales[Z]. Vermont South, Victoria, Australia, 1968.
[17] Sun S N, Su Z B, Feng Y F, et al. Parametric Vibration Analysis of Submerged Floating Tunnel Tension Legs[J]. China Ocean Engineering, 2020, 34(1):131-136.
[18] Long X, Ge F, Hong Y S. Feasibility study on buoyancy-weight ratios of a submerged floating tunnel prototype subjected to hydrodynamic loads[J]. Acta Mechanica Sinica, 2015, 31(005):750-761.

PDF(2066 KB)

Accesses

Citation

Detail

段落导航
相关文章

/