Impact response analysis of heavy vehicle passing bridge-tunnel section
Article Text (Baidu Translation)
-
摘要: 考虑车辆的纵向转动与倾覆, 将重载车辆通过桥隧过渡段的过程视为一定初始条件下的受迫振动。根据D'Alembert原理, 建立了车辆与路面的动力耦合计算模型, 并给出振动方程, 利用Laplace变换, 对车辆的动力响应进行分析, 求得车辆各轮胎对路面最大作用力随时间的变化规律。研究了车辆载质量、货物位置、行车速度与差异沉降对汽车动力响应的影响, 实测了汽车的加速度, 并对计算结果进行了验证。分析结果表明: 差异沉降、行车速度以及车辆载质量的增加均使车辆对路面的冲击力增大, 影响程度由大到小依次为车辆载质量、差异沉降、行车速度; 货物位置对车辆冲击力的影响较小。
-
关键词:
- 桥隧过渡段 /
- 冲击响应 /
- 重载车辆 /
- D'Alembert原理 /
- 差异沉降
Abstract: The rotation and overturn of vehicle in longitudinal direction were considered, and the process of heavy vehicle passing bridge-tunnel section was regarded as forced oscillation under certain initial condition.Based on D'Alembert principle, the calculating model of vehicle-road dynamic coupling was built, and vibration equation was given.The impact response of vehicle was analyzed by using Laplace transform, the change law of maximum impact force of vehicle on road was got.The influences of vehicle load, goods position, vehicle speed, difference settlement on vehicle impact response were researched.The test acceleration value was obtained, and the calculated result of acceleration was verified.Analysis result shows that this impact forces between vehicle and road increase with the increases of difference settlement, vehicle speed and load, the influences from big to small in order are vehicle load, difference settlement, vehicle speed.The goods position has little influence on vehicle impact force.-
Key words:
- bridge-tunnel section /
- impact response /
- heavy vehicle /
- D'Alembert principle /
- difference settlement
-
[1] CHEN D H, NAZARIAN S, BILYEU J. Failure analysis of a bridge embankment with cracked approach slabs and leaking sand[J]. Journal of Performance of Constructed Facilities, 2007, 21 (5): 375-381. doi: 10.1061/(ASCE)0887-3828(2007)21:5(375) [2] 张子洋. 岩溶隧道桥隧相连段施工力学行为与支护结构受力特性研究[D]. 长沙: 中南大学, 2008.ZHANG Zi-yang. Study on construction mechanical behavior and supporting structure's forced characteristics of bridge and tunnel linked segment in karst tunnel[D]. Changsha: Central South University, 2008. (in Chinese). [3] 王树仁, 张海清, 慎乃齐, 等. 下伏采空区桥隧工程变形及受力响应特征分析[J]. 岩石力学与工程学报, 2009, 28 (6): 1144-1151. doi: 10.3321/j.issn:1000-6915.2009.06.008WANG Shu-ren, ZHANG Hai-qing, SHEN Nai-qi, et al. Analysis of deformation and stress characteristics of highway tunnels above mined-out regions[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28 (6): 1144-1151. (in Chinese). doi: 10.3321/j.issn:1000-6915.2009.06.008 [4] 施成华, 雷明锋, 彭立敏, 等. 桥隧相连结构静动力特性影响因素分析[J]. 中南大学学报: 自然科学版, 2011, 42 (4): 1085-1091. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGD201104038.htmSHI Cheng-hua, LEI Ming-feng, PENG Li-min, et al. Influenced factors of static-dynamic character about tunnelbridge structure[J]. Journal of Central South University: Science and Technology, 2011, 42 (4): 1085-1091. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGD201104038.htm [5] 孙广臣, 傅鹤林, 巢万里. 桥隧邻接工程多源损伤室内模型试验研究[J]. 中南林业科技大学学报, 2011, 31 (11): 157-165. doi: 10.3969/j.issn.1673-923X.2011.11.031SUN Guang-chen, FU He-lin, CHAO Wan-li. Indoor model tests of multiple-source damages of bridge and tunnel adjacent project[J]. Journal of Central South University of Forestry and Technology, 2011, 31 (11): 157-165. (in Chinese). doi: 10.3969/j.issn.1673-923X.2011.11.031 [6] KWASNIEWSKI L, LI H Y, WEKEZER J, et al. Finite element analysis of vehicle-bridge interaction[J]. Finite Elements in Analysis and Design, 2006, 42 (2): 950-959. [7] KIM S M, MCCULLOUGH B F. Dynamic response of plate on viscous Winkler foundation to moving loads of varying amplitude[J]. Engineering Structures, 2003, 25 (9): 1179-1188. doi: 10.1016/S0141-0296(03)00066-X [8] LEFEUVE-MESGOUEZ G, PEPLOW A T, LE H D. Surface vibration due to a sequence of high speed moving harmonic rectangular loads[J]. Soil Dynamics and Earthquake Engineering, 2002, 22 (6): 459-473. doi: 10.1016/S0267-7261(02)00034-9 [9] 明祖涛, 游振兴, 张届, 等. 高速铁路桥隧沉降预测模型的研究[J]. 测绘通报, 2011 (8): 17-19, 41. https://www.cnki.com.cn/Article/CJFDTOTAL-CHTB201108006.htmMING Zu-tao, YOU Zhen-xing, ZHANG Jie, et al. The research of settlement prediction model for the bridge and tunnel on high-speed railway[J]. Bulletin of Surveying and Mapping, 2011 (8): 17-19, 41. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-CHTB201108006.htm [10] WAHLS H E. Design and construction of bridge approaches[R]. Washington DC: TRB, 1990. [11] STARK T D, OLSON S M, LONG J H. Differential movement at the embankment/structure interface-mitigation and rehabilitation[R]. Washington DC: TRB, 1995. [12] 罗强, 蔡英, 翟婉明. 高速铁路路桥过渡段的动力学性能分析[J]. 工程力学, 1999, 16 (5): 65-70. https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX199905009.htmLUO Qiang, CAI Ying, ZHAI Wan-ming. Dynamic performance analyses on high speed railway bridge-subgrade transition[J]. Engineering Mechanics, 1999, 16 (5): 65-70. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX199905009.htm [13] 赖国麟. 关于桥头搭板沉降坡差容许值Δias的建议[R]. 南京: 东南大学, 1994.LAI Guo-lin. Suggestion for allowable differential slopeΔias of the approach slab[R]. Nanjing: Southeast University, 1994. (in Chinese). [14] 张洪亮, 胡长顺. 基于五自由度车辆模型的桥头搭板容许纵坡变化值研究[J]. 土木工程学报, 2005, 38 (6): 125-131. doi: 10.3321/j.issn:1000-131X.2005.06.022ZHANG Hong-liang, HU Chang-shun. A study on the allowable differential slope of the approach slab with fivedegree-freedom vehicle model[J]. China Civil Engineering Journal, 2005, 38 (6): 125-131. (in Chinese). doi: 10.3321/j.issn:1000-131X.2005.06.022 [15] 王兴东, 杨波, 邹光明. 多轴汽车轴荷分配和转移的计算方法研究[J]. 湖北工业大学学报, 2006, 21 (3): 165-167. doi: 10.3969/j.issn.1003-4684.2006.03.057WANG Xing-dong, YANG Bo, ZOU Guang-ming. Comuting methods for distribution and transfer of multi-axle vehicles'vertical axle loads[J]. Journal of Hubei University of Technology, 2006, 21 (3): 165-167. (in Chinese). doi: 10.3969/j.issn.1003-4684.2006.03.057 -
下载:
点击查看大图
图(7)
计量
- 文章访问数: 902
- HTML全文浏览量: 155
- PDF下载量: 997
- 被引次数: 0
