[1]邓 谦,马 强,胡 刚,等.高填方刚性涵洞EPS板减载模型试验研究[J].湖北工业大学学报,2019,34(2):87-91.
 DENG Qian,MA Qiang,HU Gang,et al.Load Reduction Model Test of High Fill Rigid Culvert with EPS Plate[J].,2019,34(2):87-91.
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高填方刚性涵洞EPS板减载模型试验研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
34卷
期数:
2019年第2期
页码:
87-91
栏目:
湖北工业大学学报
出版日期:
2019-04-30

文章信息/Info

Title:
Load Reduction Model Test of High Fill Rigid Culvert with EPS Plate
文章编号:
1003-4684(2019)02-0087-05
作者:
邓  谦1 马  强1 胡  刚2 董核铭2
1 湖北工业大学土木工程与建筑学院, 湖北 武汉 430068;
2 十堰市交通投资有限公司,湖北 十堰 442000
Author(s):
DENG Qian1MA Qiang1 HU Gang2DONG Heming2
1 School of Civil Engin.and Architecture,Hubei Univ.of Tech.,Wuhan 430068,China;
2 Shiyan Transportation Investment Co. LTD., Shiyan 442000, China
关键词:
高填方涵洞 土压力 EPS减载 厚度 密度 减载率
Keywords:
high fill culvert earth pressure EPS load shedding thickness density load reduction ratio
分类号:
TU411
文献标志码:
A
摘要:
为确定EPS板减载效果与其材料的密度和厚度关系,在柔性填料减载特性的基础上,开展大型室内模型试验,主要研究了厚度为0、1 cm、2 cm、4 cm和6 cm,密度ρ为12 kg/m3和25 kg/m3的EPS板与涵顶、涵侧的土压力减载率的关系,同时对土体内部的土压力分布机理进行分析。试验结果表明,只考虑EPS板厚度对涵顶的减载具有局限性;在相同的EPS板厚时,采用密度为12 kg/m3的EPS板减载效果更佳。在竖向荷载为2 MPa时,涵顶土压力的减载效率最高,EPS板的厚度在4 cm左右较为适宜;同时表明EPS板的厚度和密度对涵顶土压力减载效果相互交叉影响,EPS板的厚度和密度的合理选择是试验结果的重要因素。
Abstract:
In order to determine the relationship between the load reduction effect of EPS plate and the density and thickness of the material, a large-scale indoor model test was carried out on the basis of the load reduction characteristics of flexible filler. The effect of EPS plate with thickness of 0, 1 cm, 2 cm, 4 cm and 6 cm, density of 12 kg/m3 and 25 kg/m3 on culvert top and culvert side has been examined. The mechanism of earth pressure distribution is also analyzed. The test results show that there are limitations on the load reduction of culvert roof if only the thickness of EPS plate is considered; the load reduction effect of using the density of 12 kg/m3 is better when the same thickness of EPS plate is applied; the load reduction efficiency of earth pressure on culvert top comes to the highest in the vertical load of 2 MPa and the thickness of 4 cm. The results also reveal that the thickness and density of EPS plate have a cross-influence on the earth pressure reduction effect of the crown of culvert. The reasonable choice of thickness and density of EPS board is an important factor in the test results.

参考文献/References:

[1] Kang J, Parker F, Chai H Y. Soil–structure interaction for deeply buried corrugated steel pipes Part I: Embankment installation[J]. Engineering Structures, 2008; 30(2):384-392.
[2] 陈保国, 宋丁豹, 王云辉,等. 减载式刚性涵洞减载机理与受力特性研究[J]. 华中科技大学学报(自然科学版), 2016, 44(4):79-84.
[3] 刘凯, 向先超, 范志强,等. 上埋式涵洞竖向土压力计算的新方法[J]. 人民黄河, 2018, 40(6):109-115.
[4] 康佐, 杨晓华, 谢永利,等. 高填路堤下涵洞病害机理[J]. 长安大学学报(自然科学版), 2006, 26(2):22-26.
[5] 王晓谋, 顾安全. 上埋式管道垂直土压力的减荷措施[J]. 岩土工程学报, 1990,12(3): 83-89.
[6] 郭婷婷. EPS板在上埋式涵洞土压力减荷中的应用与分析[J]. 水利水电科技进展, 2011, 31(1):74-78.
[7] 顾安全, 吕镇锋, 姜峰林,等. 高填土盖板涵EPS板减荷试验及设计方法[J]. 岩土工程学报, 2009, 31(10): 1481-1486.
[8] Vaslestad J, Yesuf G Y, Johansen T H. Long-term in-situ measurements of concrete culverts with high fills[C]// Bearing Capacity of Roads, Railways and Airfields. 8th International Conference (BCR2A’09). 2009.
[9] Sun L, Hopkins T C, Beckham T L. Long-term monitoring of culvert load reduction using an imperfect ditch backfilled with geofoam[J]. Transportation Research Record Journal of the Transportation Research Board, 2011, 2212(1):56-64.

备注/Memo

备注/Memo:
[收稿日期] 2018-10-15
[基金项目] 国家自然科学基金项目(51678223);湖北省高等学校优秀中青年科技创新团队计划项目(T201605)
[第一作者] 邓    谦(1992-), 男, 湖北荆州人,湖北工业大学硕士研究生,研究方向为道路和环境岩土
[通信作者] 马    强(1983-), 男, 湖北丹江口人,工学博士,湖北工业大学副教授,研究方向为道路和环境岩土
更新日期/Last Update: 2019-11-29