[1]韩冬卿.长时动载作用下低路堤动力响应试验分析[J].自然灾害学报,2022,31(02):215-221.[doi:10.13577/j.jnd.2022.0223]
 HAN Dongqing.Experimental analysis of low embankment dynamic response under long-term dynamic load[J].,2022,31(02):215-221.[doi:10.13577/j.jnd.2022.0223]
点击复制

长时动载作用下低路堤动力响应试验分析
分享到:

《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
31
期数:
2022年02期
页码:
215-221
栏目:
出版日期:
2022-04-28

文章信息/Info

Title:
Experimental analysis of low embankment dynamic response under long-term dynamic load
作者:
韩冬卿
中电建冀交高速公路投资发展有限公司, 河北 石家庄 050051
Author(s):
HAN Dongqing
Zhong Dian Jian Ji Jiao Highway Investment Development Co. Ltd., Shijiazhuang 050051, China
关键词:
低路堤动力响应模型试验应力应变
Keywords:
low embankmentdynamic characteristicsmodel teststressstrain
分类号:
U416.1;X43
DOI:
10.13577/j.jnd.2022.0223
摘要:
为合理设计和建造低路堤,提高低路堤使用寿命,探究荷载作用下的动力响应规律。运用标准轴载作用下单轮影响范围内的1: 1室内路基模型试验,分析了长时动荷载作用下砾类土低路堤的动力响应,探究不同含水率状态下砾类低路堤不同深度和不同结构层的应力应变规律。结果表明:(1)地基含水率及荷载不变时,应力随深度增加而快速衰减,通过大量试验数据,统计分析得到了不同状态下地基的应力衰减系数方程。(2)地基含水率越大,地基范围内各层应变累积效应越明显,且在各含水率状态下地基应变累积率均大于路基部分应变累积率。(3)通过对大量数据的统计模拟分析,提出了长时动载作用下低路堤路基和地基范围内动应力累积模型。通过分析长时动荷载作用下砾类土低路堤的动力响应,可为车辆荷载作用下的动力特性提供数据参考,为合理路基高度设计提供依据。
Abstract:
In order to design and build low embankment rationally and improve the service life of low embankment, the law of dynamic response under load should be clear. Based on the 1:1 laboratory subgrade model test within the influence range of standard axial load,this paper analyzes the dynamic response of gravel soil low embankment under long-term dynamic load,and explores the stress-strain changes of different depths and different structural layers of gravel low embankment under different water content. The results show that:(1)When the water content of the foundation and the load remain unchanged,the stress decays rapidly as the depth increases. Through a large amount of test data,statistical analysis has obtained the stress attenuation coefficient equation of the foundation in different states.(2)The greater the water content of the foundation,the more obvious the strain accumulation effect of each layer in the range of the foundation,and the strain accumulation rate of the foundation under each moisture content state is greater than the strain accumulation rate of the subgrade part.(3)Through statistical simulation analysis of a large amount of data,a dynamic stress accumulation model of low embankment subgrade and ground under long-term dynamic load is proposed. By analyzing the dynamic response of gravel-like soil low embankment under long-term dynamic load,it can provide a data reference for the dynamic characteristics under vehicle load and provide a basis for the design of reasonable roadbed height.

参考文献/References:

[1] 张颖, 张睿, 唐道伦.交通荷载引起的高速公路低路堤沉降研究[J].中外公路, 2013, 33(5):14-18. ZHANG Ying, ZHANG Rui, TANG Daolun. Study on settlement of low embankment of expressway induced by traffic load[J]. Journal of China & Foreign Highway, 2013, 33(5):14-18.(in Chinese)
[2] 洪勇, 周蓉, 郑孝玉.不同排水条件下砂-黄土界面的剪切力学特性[J].吉林大学学报(地球科学版), 2019, 49(4):1073-1081. HONG Yong,ZHOU Rong,ZHENG Xiaoyu. Shear mechanical properties of sand-loess under different drainage conditions[J]. Journal of Jilin University (Earth Science Edition),2019, 49(4):1073-1081.(in Chinese)
[3] 张睿, 徐永福, 于波.交通荷载下低路堤高速公路路基沉降计算[J].地下空间与工程学报, 2016, 12(4):952-957. ZHANG Rui,XU Yongfu,YU Bo. Cumulative settlement of highway subgrade with low embankment induced by traffic load[J]. Chinese Journal of Underground Space and Engineering, 2016, 12(4):952-957.(in Chinese)
[4] 李林翠, 李喜安, 洪勃, 等.不同埋深马兰黄土孔隙结构试验[J].吉林大学学报(地球科学版), 2019, 49(2):493-503. LI Lincui,LI Xi’an,HONG Bo. Experiment on pore structures of Malan loess at different buried depth[J]. Journal of Jilin University(Earth Science Edition),2019, 49(2):493-503.(in Chinese)
[5] 陈昌富, 米汪, 赵湘龙.考虑高路堤土拱效应层状地基中带帽刚性桩复合地基的承载特性[J].中国公路学报, 2016, 29(7):1-9. CHEN Changfu,MI Wang,ZHAO Xianglong. Bearing characteristic of composite foundation reinforced by rigid pile with cap in layered ground considering soil arching effect of high embankment[J]. China Journal of Highway and Transport, 2016, 29(7):1-9.(in Chinese)
[6] Kim S M,Mccullough B F. Dynamic response of plate on viscous Winkler foundation to moving loads of vary-ingamplitude[J]. Engineering Structure, 2003, 25(9):1179-1188.
[7] LI Guowei,NGUYEN T N,AMENUVOR A C. Settlement prediction of surcharge preloaded low embankment on soft ground subjected to cyclic loading[J]. Marine Georesources and Geotechnology, 2016, 34(2):154-161.
[8] CUI Xinzhuang,ZHANG Na,ZHANG Jiong,et al. In situ tests simulating traffic-load-induced settlement of alluvial silt subsoil[J]. Soil Dynamics and Earthquake Engineering, 2014, 58:10-20.
[9] 陈剑, 苏跃宏.交通荷载作用下公路路基动力特性的数值模拟研究[J].公路交通科技, 2011, 28(5):44-48. CHEN Jian,SU Yuehong. Numerical simulation of dynamic performance of highway subgrade under traffic loads[J]. Journal of Highway and Transportation Research and Development, 2011, 28(5):44-48.(in Chinese)
[10] 赵俊明, 刘松玉, 石名磊, 等.交通荷载作用下低路堤动力特性试验研究[J].东南大学学报(自然科学版), 2007, 37(5):921-925. ZHAO Junming,LIU Songyu,SHI Minglei,et al. Experimental study on dynamic response of low embankment under traffic load[J]. Journal of Southeast University (Natural Science Edition), 2007, 37(5):921-925.(in Chinese)
[11] 蒋华忠, 李国维, 余湘娟, 等.交通荷载作用下低路堤软基的室内试验研究和沉降计算[J].公路, 2006(10):59-62. JIANG Huazhong,LI Guowei,YU Xiangjuan, et al. Laboratory test study and settlement calculation of low embankment on soft foundation under traffic load[J]. Highway, 2006(10):59-62.(in Chinese)
[12] 张洪亮, 王秉纲, 张春雷, 等.平原区低路堤高速公路排水系统研究[J].重庆交通大学学报(自然科学版), 2010, 29(2):211-215. ZHANG Hongliang,WANG Binggang,ZHANG Chunlei, et al. Drainage system for freeway with low filled embankment in plain area[J]. Journal of Chongqing Jiao Tong University(Natural Science Edition), 2010, 29(2):211-215.(in Chinese)
[13] 姜波, 余波.不同类型交通荷载作用下低路堤路基特性现场试验研究[J].现代交通技术, 2010, 7(2):24-26. JIANG Bo,YU Bo. Site Test on Low Embankment under different traffic load[J]. Modern Transportation Technology, 2010, 7(2):24-26.(in Chinese)
[14] 李琨, 冀宝荣, 郝亮.黄土丘陵沟壑区坡度对居民区的影响分析[J].自然灾害学报, 2020, 29(4):62-68. LI Kun, JI Baorong, HAO Liang. Analysis on the influence of slope on residential area in loess hilly and gully region[J]. Journal of Natural Disasters, 2020, 29(4):62-68.(in Chinese)
[15] 徐敬业, 徐林荣, 张亮亮.高速公路低路堤路基服役状态风险评估[J].土木与环境工程学报(中英文), 2020, 42(4):36-43. XU Jingye,XU Linrong,ZHANG Liangliang. Risk assessment of expressway low-embankment-subarade in service status[J]. Journal of Civil and Environmental Engineering, 2020, 42(4):36-43.(in Chinese)
[16] 寇佳亮, 张亚茹, 张晶.冻融循环后高延性混凝土疲劳性能试验及S-N曲线研究[J].自然灾害学报, 2019, 28(5):75-85. KOU Jialiang,ZHANG Yaru, ZHANG Jing. Experimental study on fatigue property and S-N curve of high ductile fiber concrete under freeze-thaw cycles[J]. Journal of Natural Disasters, 2019, 28(5):75-85.(in Chinese)
[17] 查文华, 洪宝宁.交通荷载下低路堤路基的动力响应[J].江苏大学学报(自然科学版), 2008, 29(3):264-268. ZHA Wenhua,HONG Baoning. Dynamic response on roadbed of low embankment under vehicle loadings[J]. Journal of Jiangsu University(Natural Science Edition), 2008, 29(3):264-268.(in Chinese)
[18] 张浩, 杨玲, 郭院成.交通荷载作用下低填道路软土地基的动力响应分析[J].郑州大学学报(工学版), 2017, 38(1):11-15. ZHANG Hao, YANG Ling, GUO Yuancheng. Analysis of dynamic response of soft soil foundation beneath low embankment under traffic load[J]. Journal of Zhengzhou University(Engineering Science), 2017, 38(1):11-15.(in Chinese)

相似文献/References:

[1]杨柯,李秋胜,王冰笛.基于实测台风数据的超高层建筑非线性计算[J].自然灾害学报,2006,15(03):101.
 YANG Ke,Q. S. Li,WANG Bing-di.A nonlinear numerical research on super-tall building based on typhoon measurements[J].,2006,15(02):101.
[2]江学良,祝中林,杨慧,等.含隧道岩石边坡在地震作用下动力响应特性研究[J].自然灾害学报,2016,25(02):094.[doi:10.13577/j.jnd.2016.0211]
 JIANG Xueliang,ZHU Zhonglin,YANG Hui,et al.Study on dynamic response characteristics of rock slope with tunnel under earthquake[J].,2016,25(02):094.[doi:10.13577/j.jnd.2016.0211]
[3]李雪红,周鹤鸣,李晔暄,等.远场长周期地震动作用下减隔震连续梁桥的动力响应特性研究[J].自然灾害学报,2016,25(03):137.[doi:10.13577/j.jnd.2016.0316]
 LI Xuehong,ZHOU Heming,LI Yexuan,et al.Study on the dynamic response characteristics of isolated continuous girder-bridge under far-field long-period ground motions[J].,2016,25(02):137.[doi:10.13577/j.jnd.2016.0316]
[4]牛家永,江学良,杨慧,等.含小净距隧道岩石边坡地震动力响应特性研究[J].自然灾害学报,2017,26(05):130.[doi:10.13577/j.jnd.2017.0515]
 NIU Jiayong,JIANG Xueliang,YANG Hui,et al.Study on dynamic response characteristics of rock slope with small spacing tunnel under earthquakes[J].,2017,26(02):130.[doi:10.13577/j.jnd.2017.0515]
[5]马强,周凤玺.移动荷载下梯度非均匀土的动力响应[J].自然灾害学报,2018,27(06):059.[doi:10.13577/j.jnd.2018.0608]
 MA Qiang,ZHOU Fengxi.Dynamic response of graded non-homogeneous soil under a moving load[J].,2018,27(02):059.[doi:10.13577/j.jnd.2018.0608]
[6]赵文燕,王桂萱,尹训强,等.南沙群岛永暑礁西南部珊瑚礁动力稳定性分析评价[J].自然灾害学报,2021,30(05):181.[doi:10.13577/j.jnd.2021.0517]
 ZHAO Wenyan,WANG Guixuan,YIN Xunqiang,et al.Analysis and evaluation of dynamic stability of coral reef in the southwest of Yongshu Reef in Nansha Islands[J].,2021,30(02):181.[doi:10.13577/j.jnd.2021.0517]

备注/Memo

备注/Memo:
收稿日期:2020-12-11;改回日期:2021-6-21。
基金项目:河北省交通运输厅科技项目(TH-201925)
作者简介:韩冬卿(1970-),男,高级工程师,主要从事道路与桥梁工程方面的研究.E-mail:caiyongli3333@126.com
更新日期/Last Update: 1900-01-01