不同加腋厚度单仓管廊力学性能计算与数值分析
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摘要
地下综合管廊端部性能是管廊整体工作的关键,在实际工程中常以加腋的形式增强端部性能.为研究不同腋脚高度的影响,在沈阳市管廊工程结构型式基础上设计了3种不同腋脚高度的单仓管廊模型.利用ABAQUS有限元软件进行不同结构型式的数值分析,得到3个模型的位移变化曲线、应力云图以及荷载-位移曲线,同时对模型的延性、开裂荷载及裂缝宽度等力学特性进行计算和讨论分析.得出:加腋形式提高了管廊的整体承载力与刚度并对管廊抗渗防水有利,为实际工程中管廊加腋厚度的确定提供理论参考.
The performance of the utility tunnel end is the key to ensure the overall work of the utility tunnel.In the actual project,the end performance is usually enhanced by adding axillary.In order to study the influence of different height of axillary;three kinds of single warehouse utility tunnel model with different axillary heights were designed on the basis of Shenyang utility tunnel project.Through the ABAQUS finite element software,the displacement curves,the Stress nephogram and the load-displacement curves of the three models are obtained,based on these,the mechanical properties of the model such as ductility,cracking load and crack width are calculated.The comprehensive analysis shows that the addition of axillary form improves the overall bearing capacity and rigidity of the utility tunnel and is beneficial to the anti-seepage and waterproof of the utility tunnel,which provides a theoretical reference for adding the axillary thickness of the utility tunnel in the actual project.
The performance of the utility tunnel end is the key to ensure the overall work of the utility tunnel.In the actual project,the end performance is usually enhanced by adding axillary.In order to study the influence of different height of axillary;three kinds of single warehouse utility tunnel model with different axillary heights were designed on the basis of Shenyang utility tunnel project.Through the ABAQUS finite element software,the displacement curves,the Stress nephogram and the load-displacement curves of the three models are obtained,based on these,the mechanical properties of the model such as ductility,cracking load and crack width are calculated.The comprehensive analysis shows that the addition of axillary form improves the overall bearing capacity and rigidity of the utility tunnel and is beneficial to the anti-seepage and waterproof of the utility tunnel,which provides a theoretical reference for adding the axillary thickness of the utility tunnel in the actual project.
引文
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[2] Chen Jun,Jiang Luzhen,Li Jie,et al.Numerical simulation of shaking table test on utility tunnel under non-uniform earthquake excitation[J].Tunneling and Underground Space Technology,2012,30:205-216
[3] Julian Canto-Perello,Jorge Curiel-Esparza,Vicete Calvo.Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space[J].Expert Systems with Applications,2013,40:4707-4714
[4] Wang Shuhong,Ni Pengpeng,Guo Mudan.Spatial characterization of joint planes and stability analysis of tunnel blocks[J].Tunnelling and Underground Space Technology,2013(38):357-367
[5] Marshall A M,Haji Twana.An analytical study of tunnel-pile interaction[J].Tunneling and Underground Space Technology,2015,45:43-51
[6] Chen Jun,Shi Xiaojun,Li Jie.Shaking table test of utility tunnel under non-uniform earthquake wave excitation[J].Soil Dynamics and Earthquake Engineering,2010,30:1400-1416
[7] 谭博,黄立夫,王述红.市政综合管沟方案比选及安全性能数值分析[J].地下空间与工程学报,2016,10:7-12 Tan Bo,Huang Lifu,Wang Shuhong.Comprehensive analysis of municipal integrated trench scheme and numerical analysis of safety performance[J].Editorial Office of Underground Space and Engineering,2016,10:7-12
[8] 谭博,蔡智,王述红.海相深厚软土综合管廊施工技术[J].施工技术,2016,4:105-108 Tan Bo,Cai Zhi,Wang Shuhong.Marine deep soft soil integrated corridor construction technology[J].Construction Technology,2016,4:105-108
[9] 王宏彦.武汉市市政综合管廊建设现状与若干问题分析:光谷中心区市政综合管廊[J].城市道桥与防洪,2015,(11):203-208 Wang Hongyan.Analysis on present situation and some problems in construction of municipal comprehensive pipe gallery in Wuhan City[J].Urban Roads Bridges & Flood Control,2015,(11):203-208
[10] 胡翔,薛伟辰.预制预应力综合管廊受力性能试验研究[J].土木工程学报,2016,42(5):115-118 Hu Xiang,Xue Weichen.Experimental study of mechanical properties of PPMT[J].China Civil Engineering Journal,2016,42(5):115-118
[11] 岳庆霞.地下综合管廊地震反应分析与抗震可靠性研究[D].上海:同济大学,2007 Yue Qingxia.Seismic response analysis and reliability of utility tunnel[D].Shanghai:Tongji University,2007
[12] 姜士磊.路堤涵洞土压力三维数值计算及理论研究[D].太原:太原理工大学,2014 Jiang Shilei.The 3-D numerical calculation and theoretical research about earth pressure on culvert under embankment[D].Taiyuan:Taiyuan University of Technology,2014
[13] 周济龙,阿力普江·杰如拉,王述红.软土地基综合管廊基底沉降多因素影响分析[J].工程与试验,2017,(3):41-44 Zhou Jilong,A Li Pu Jiang·Jierula,Wang Shuhong.Analysis of multi factors influence on basement settlement of soft soil foundation utility tunnel[J].Engineering and Test,2017,(3):41-44
[14] 王述红,阿力普江·杰如拉,王鹏宇,等.预制矩形箱涵受力性能模拟及其潜在的破坏模式[J].东北大学学报,2018,39(2):260-265 Wang Shuhong,A Li Pu Jiang·Jierula,Wang Pengyu,et al.Mechanics performance analysis of precast rectangle box culvert in different burial depth and damage prediction of key parts[J].JournalofNortheasternUniversity,2018,39(2):260-265
[15] 田子玄.装配叠合式混凝土地下综合管廊受力性能试验研究[D].哈尔滨:哈尔滨工业大学,2016 Tian Zixuan.Experimental research on force performance of precast concrete urban underground comprehensive municipal tunnel[D].Harbin:Harbin Institute of Technology,2016
[16] 徐绩青.延性系数确定方法的探讨[J].水运工程,2004,(9):14-17 Xu Jiqing.Discussion on determination method of ductility coefficient[J].Water Transport Engineering,2004,(9):14-17