|Table of Contents|

Study on load reduction method of snow-covered corrugated steel shed hole at tunnel entrance in alpine region(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2024年05期
Page:
154-162
Research Field:
桥隧工程
Publishing date:

Info

Title:
Study on load reduction method of snow-covered corrugated steel shed hole at tunnel entrance in alpine region
Author(s):
LEI Shengyou1;  CHENG Bo1;  NI Yun2;  WANG Rui1;  LI Jigang1;  WANG Haojie1
(1.School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Xinjiang Tianshan Road and Bridge Co., Ltd, Wusu 833000, Xinjiang, China)
Keywords:
alpine region;  corrugated steel shed hole;  load reduction;  reinforced ice;  geogrid;  EPS plate;  numerical simulation
PACS:
U449
DOI:
10.19815/j.jace.2022.09116
Abstract:
The tunnel entrance section in alpine region is easily affected by snow load and rockfall. Using the existing long-span corrugated steel shed hole will cause large deformation and instability, which will affect the safety operation of the border highway. Therefore, based on the corrugated steel snow shed hole project at the entrance of a tunnel of a certain line, starting from the arch effect and load reduction mechanism of stiffened bridge, the three-dimensional corrugated steel shed hole models of 10 load reduction schemes were conducted by using finite element software, including EPS plate, EPS plate + reinforced snow, EPS plate + reinforced ice. The effect of each load reduction scheme on the stress of shed hole, shed hole deformation and snow cover pressure were studied. The stress deformation characteristics and load reduction effect of steel shed hole were compared and analyzed, and the optimal load reduction scheme was selected. The results show that after applying the load reduction material, the snow cover pressure above the shed hole is dispersed to different degrees on both sides of the shed hole, which reduce the force of the shed structure. With the increase of snow cover height, the effect of load reduction is more significant. Among them, the combined scheme of 30 cm EPS plate+ reinforced ice has the best load reduction effect. The roof stress is reduced by 32.72% and the roof displacement is reduced by 22.63%. In view of the load reduction problem of corrugated steel shed hole, it is recommended to adopt 30 cm EPS plate + reinforced snow scheme within 30 m of the tunnel entrance, and 30 cm EPS plate + reinforced ice scheme can be used for 30 m distance away from the tunnel entrance.

References:

[1] 王 华.隧道洞口雪崩防治方案探讨[J].隧道建设(中英文),2019,39(4):642-650.
WANG Hua.Study of prevention measures of avalanche at tunnel entrance[J].Tunnel Construction,2019,39(4):642-650.
[2]张家新.高海拔寒区公路隧道洞口不良地质问题与洞口设计对策研究[J].公路,2016,61(10):257-260.
ZHANG Jiaxin.Study on the bad geological problem sand the design counter measures for the tunnel entrance of high-altitude cold regions[J].Highway,2016,61(10):257-260.
[3]梁永忠,郑佳艳,邹宗良,等.高海拔公路隧道防雪遮光棚设计理念及应用[J].地下空间与工程学报,2018,14(增2):969-974.
LIANG Yongzhong,ZHENG Jiayan,ZOU Zongliang,et al.Research on design method of anti-snow and shading shed for road tunnel of high altitude and its application[J].Chinese Journal of Underground Space and Engineering,2018,14(S2):969-974.
[4]李祝龙,章金钊.高原多年冻土地区波纹管涵应用技术研究[J].公路,2000,45(2):28-31.
LI Zhulong,ZHANG Jinzhao.Application of corrugated pipe culvert in permafrost regions[J].Highway,2000,45(2):28-31.
[5]顾安全.上埋式管道及洞室垂直土压力的研究[J].岩土工程学报,1981,3(1):3-15.
GU Anquan.Investigation of the vertical earth pressure on projecting conduit and underground chamber under a high embankment[J].Chinese Journal of Geotechnical Engineering,1981,3(1):3-15.
[6]OKABAYASHI K,OHTANI W,AKIYAMA K,et al.Centrifugal model test for reducing the earth pressure on the culvert by using the flexible material[C]//CHUNG J S,NATVIG B J,DAS B M.Proceedings of the Fourth International Offshore and Polar Engineering Conference.Osaka:ISOPE,1994:620-624.
[7]杨锡武,张永兴.山区公路高填方涵洞加筋桥减载方法及其设计理论研究[J].岩石力学与工程学报,2005,24(9):1561-1571.
YANG Xiwu,ZHANG Yongxing.Study on the method and theory of load reduction by reinforcement bridge for the culvert beneath high filling[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1561-1571.
[8]马 莉,刘亚朋,李 盛,等.不同减载措施下高填黄土拱形明洞结构受力研究[J].现代隧道技术,2020,57(3):75-84.
MA Li,LIU Yapeng,LI Sheng,et al.Study on the mechanical behaviors of high-filled loess arched open cut tunnel under different load reduction measures[J].Modern Tunnelling Technology,2020,57(3):75-84.
[9]魏 瑞,曹周阳,顾安全.高填方大直径钢波纹管涵减荷试验[J].长安大学学报(自然科学版),2018,38(3):1-9.
WEI Rui,CAO Zhouyang,GU Anquan.Load reduction experimental of high fill soil large diameter corrugated steel pipe culvert[J].Journal of Chang'an University(Natural Science Edition),2018,38(3):1-9.
[10]李雨株.大跨径覆土波纹钢板桥涵结构的受力性能研究[D].北京:北京交通大学,2013.
LI Yuzhu.Mechanical performance of the long-span buried corrugated steel bridge structure[D].Beijing:Beijing Jiaotong University,2013.
[11]KANG J,PARKER F,YOO C H.Soil-structure interaction and imperfect trench installations for deeply buried concrete pipes[J].Journal of Geotechnical and Geoenvironmental Engineering,2007,133(3):277-285.
[12]YOO C H,PARKER F,KANG J.Bedding and fill heights for concrete roadway pipe and box culverts[M].Auburn:Highway Research Center,Auburn University,2005.
[13]张 阳,彭志辉.高填方波形钢板拱桥优化设计技术研究[J].公路工程,2017,42(6):122-127.
ZHANG Yang,PENG Zhihui.Optimal design techniques research on corrugated steel arch bridge under high backfills[J].Highway Engineering,2017,42(6):122-127.
[14]SUN L C,HOPKINS T,BECKHAM T.Stress reduction by ultra-lightweight geofoam for high fill culvert:numerical analysis[C]//TITI H H.Proceedings of the Geotechnical Applications for Transportation Infrastructure.Milwaukee:ASCE,2005:146-154.
[15]LIU C H.Traction mechanism of automobile tires on snow[D].Vienna:Vienna University of Technology,1994.
[16]JOHNSON J B,SOLIE D J,BROWN J A,et al.Shock response of snow[J].Journal of Applied Physics,1993,73(10):4852-4861.
[17]SHOOP S A.Finite element modeling of tire-terrain interaction[D].Michigan:University of Michigan,2001.
[18]孙 阳.压缩式多功能城市道路除雪车压缩装置结构分析及控制系统研究[D].长春:吉林大学,2021.
SUN Yang.Structure analysis and control system research of compression device of compression multifunctional urban road snow remover[D].Changchun:Jilin University,2021.
[19]姜峰林.高填方涵洞EPS板减荷技术应用及数值模拟研究[D].西安:长安大学,2010.
JIANG Fenglin.EPS load reduction technology application and numerical simulation for high fill culvert[D].Xi'an:Chang'an University,2010.
[20]袁宝江.冰场人工冰的破坏准则研究及应用[D].哈尔滨:哈尔滨工业大学,2021.
YUAN Baojiang.Research and application of artificial ice failure criteria in ice rink[D].Harbin:Harbin Institute of Technology,2021.

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Last Update: 2024-09-30