[1]赵桐德,李二超,闫继业,等.动荷载作用下基坑支护结构动力响应研究[J].地震工程与工程振动,2020,40(03):216-222.[doi:10.13197/j.eeev.2020.03.216.zhaotd.022]
 ZHAO Tongde,LI Erchao,YAN Jiye,et al.Study on dynamic response of the foundation pit supporting structure under dynamic load[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2020,40(03):216-222.[doi:10.13197/j.eeev.2020.03.216.zhaotd.022]
点击复制

动荷载作用下基坑支护结构动力响应研究
分享到:

《地震工程与工程振动》[ISSN:/CN:]

卷:
40
期数:
2020年03
页码:
216-222
栏目:
论文
出版日期:
2020-06-30

文章信息/Info

Title:
Study on dynamic response of the foundation pit supporting structure under dynamic load
作者:
赵桐德1 李二超1 闫继业2 宋胜利1 石振彤1 杨文峰1
1. 中国矿业大学(北京) 力学与建筑工程学院, 北京 100083;
2. 中国冶金地质总局 第一地质勘查院, 河北 廊坊 065201
Author(s):
ZHAO Tongde1 LI Erchao1 YAN Jiye2 SONG Shengli1 SHI Zhentong1 YANG Wenfeng1
1. School of Mechanics & Civil Engineering, China University of Mining & Technology(Beijing), Beijing 100083, China;
2. The First Geological Institute of the China Metallurgical Geology Bureau, Langfang 065201, China
关键词:
车辆荷载基坑支护车速内力位移数值模拟与监测
Keywords:
vehicle loadfoundation pit supportvehicle speedinternal force displacementnumerical simulation and monitoring
分类号:
TU470
DOI:
10.13197/j.eeev.2020.03.216.zhaotd.022
摘要:
应用Midas/GTS数值分析软件对车辆动荷载作用下基坑支护体系的动力响应进行了模拟分析。通过调整车速和车辆行驶位置系统地分析了不同车速行驶动荷载作用下基坑支护结构的内力及位移变化情况。研究发现,基坑桩锚支护体系中锚杆轴力随车速提升呈先增大后减小的规律,支护桩整体结构在车速动荷载影响下与锚杆轴力呈相同变化趋势,汽车在一定行驶速度范围内,随着车速的提升支护桩位移逐渐增大,达到波动峰值后位移变小;车辆距离基坑边线的行驶位置与桩锚支护结构受力变化呈非线性关系,距离越近影响变化越明显。结合具体工程实例,通过对现场监测数据分析并与数值模拟结果进行对比,结果表明,数值模拟与现场监测得到的基坑支护体系内力及位移变化规律一致,数值模拟技术工程指导效果显著。
Abstract:
The dynamic response of foundation pit supporting system under vehicle dynamic load was simulated and analyzed by using Midas/GTS numerical analysis software. By adjusting the vehicle speed and vehicle driving position, the changes of internal force and displacement of foundation pit supporting structure under different speed dynamic load were analyzed systematically. The results showed that the axial force of anchor in the pile-anchor supporting system of foundation pit increased at first and then decreased with the increase of vehicle speed, and the whole structure of supporting pile changes in the same trend as the axial force of anchor under the influence of vehicle speed and dynamic load. Within a certain range of driving speed, the displacement of the supporting pile increased gradually with the increase of the vehicle speed, and became smaller after reaching the fluctuating peak value. There is a nonlinear relationship between vehicle driving position and stress change of the pile-anchor supporting structure. The closer the distance was, the more obvious the change was. Combined with a specific engineering example, through the analysis of the on-site monitoring data, compared with the numerical simulation results, the results showed that the internal force and displacement of the foundation pit supporting system obtained by numerical simulation and on-site monitoring were consistent. The engineering guidance effect of numerical simulation technology was remarkable.

参考文献/References:

[1] 王新志, 谌民, 魏厚振, 等.车辆荷载作用下钙质砂路基的动态响应试验研究[J].岩土力学, 2018, 39(11):4093-4100. WANG Xinzhi, CHEN Min, WEI Houzhong, et al. Experimental study on dynamic response of calcareous sand subgrade under vehicle load[J]. Rock and Soil Mechanics, 2018, 39(11):4093-4100.(in Chinese)
[2] 郑国琛, 祁皑.地铁引发邻近建筑物振动及控制研究评述[J].地震工程与工程振动, 2018, 38(5):93-102. ZHENG Guochen, QI Ai. State-of-the-art on vibration law and control of buildings adjacent to metro[J]. Earthquake Engineering And Engineering Dynamics, 2018, 38(5):93-102.(in Chinese)
[3] 卞艳山.地面汽车荷载影响下邻近建筑物的振动响应规律研究[D].邯郸:河北工程大学, 2017. BIANYanshan.The response of adjacent buildings under the vibration by vehicle load[D].Handan:Hebei University of Engineering, 2017.(in Chinese)
[4] 李鹏.汽车振动作用下黄土斜坡的动力响应及其致灾机理研究[D].长安:长安大学, 2017 LI Peng.Study on dynamic response and disaster mechanism of loess slope under vehicle vibration[D].Changan:Chang’an University, 2017. (in Chinese)
[5] Lak M A, Degrande G, Lombaert G. The effect of road unevenness on the dynamic vehicle response and ground-borne vibrations due to road traffic[J]. Soil Dynamics & Earthquake Engineering, 2011, 31(10):1357-1377.
[6] Paneiro G, Durao F O, Silva M C E, et al. Prediction of ground vibration amplitudes due to urban railway traffic using quantitative and qualitative field data[J]. Transportation Research Part D Transport & Environment, 2015, 40:1-13.
[7] 孟上九, 周健, 王淼, 等.车辆荷载下路基变形特性分析[J].地震工程与工程振动, 2018, 38(2):35-41. MENG Shangjiu, ZHOU Jian, WANG Miao, et al. Analysis on the deformation characteristics for roadbed under vehicle loads[J]. Earthquake Engineering And Engineering Dynamics, 2018, 38(2):35-41.(in Chinese)
[8] 邱洪志, 孔纪名, 王仁超, 等.车辆荷载对支护桩主动土压力的影响分析[J].岩土工程学报, 2016, 38(3):486-493. QIU Hongzhi, KONG Jiming, WANG Renchao, et al. Effects of active earth pressure on supporting piles under vehicle loads[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(3):486-493.(in Chinese)
[9] 白晓宇, 张明义, 袁海洋.移动荷载作用下土岩组合基坑吊脚桩变形分析[J].岩土力学, 2015, 36(4):1167-1173. BAI Xiaoyu, ZHANG Mingyi, YUAN Haiyang. Deformation analysis for the end-suspended piles in the combined soil-rock foundation pits under moving loadings[J]. Rock and Soil Mechanics, 2015, 36(4):1167-1173.(in Chinese)
[10] 乐金朝, 邱洪志, 张利军.交通荷载作用下桩锚支护结构动力响应分析[J].地下空间与工程学报, 2013, 9(6):1320-1325. YUE Jinchao, QIU Hongzhi, ZHANG Lijun. Analysis on dynamic response of the foundation pit supporting structure under traffic loads[J]. Chinese Journal of Underground Space and Engineering, 2013, 9(6):1320-1325. (in Chinese)
[11] 张艳美, 梁波.几何不平顺条件下高速公路路基的动态响应[J].兰州铁道学院学报, 2001, 20(4):66-69. ZHANG Yanmei, LIANG Bo. Dynamic response to subgrade of highway in geometric irregularity condition[J].Journal of Lanzhou Railway University, 2001, 20(4):66-69. (in Chinese)

相似文献/References:

[1]周灿,黄海云,张俊平,等.计重收费模式下运营车辆荷载发展变异趋势的预测分析[J].地震工程与工程振动,2016,36(03):210.[doi:10.13197/j.eeev.2016.03.210.zhouc.026]
 ZHOU Can,HUANG Haiyun,ZHANG Junping,et al.Prediction of development trend of vehicle load under the toll-by-weight policy[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2016,36(03):210.[doi:10.13197/j.eeev.2016.03.210.zhouc.026]

备注/Memo

备注/Memo:
收稿日期:2019-09-10;改回日期:2019-12-07。
基金项目:中央高校基本科研业务费专项基金项目(2010YL01)
作者简介:赵桐德(1996-),男,硕士研究生,主要从事岩土工程设计与研究.E-mail:zhaotd123@163.com
更新日期/Last Update: 1900-01-01