[1] Chen Baoguo, Zheng Junjie, Lu Yaner, et al. Soil-structure interaction of unsymmetrical trench installation culvert [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 94-98. [doi:10.3969/j.issn.1003-7985.2009.01.020]
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Soil-structure interaction of unsymmetrical trench installation culvert(
)
非对称沟埋式涵洞涵-土作用机理
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 25
- Issue:
- 2009 1
- Page:
- 94-98
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2009-03-30
Info
- Title:
- Soil-structure interaction of unsymmetrical trench installation culvert
- 非对称沟埋式涵洞涵-土作用机理
- Author(s):
- Chen Baoguo1, 2, Zheng Junjie1, Lu Yan’er1
-
1School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
2 Engineering Faculty, China University of Geosciences, Wuhan 430074, China
- Keywords:
- soil-structure interaction; soil arching effect; eccentric load effect; full scale experiment; numerical simulation
- PACS:
- U449
- DOI:
- 10.3969/j.issn.1003-7985.2009.01.020
- Abstract:
- The computation of the design load on culverts in the current Chinese General Code for Design of Highway Bridges and Culverts(CGCDHBC)is primarily based on the linear earth pressure theory, which cannot accurately reflect the changes in vertical loads on trench installation culverts.So the changes in vertical earth pressure and soil arching effect in the backfill for an unsymmetrical trench installation culvert are studied based on a full scale experiment and finite element(FE)simulation.The variation laws of foundation pressure and settlement are also analyzed.Meanwhile, the influence of eccentric load induced by an unsymmetrical trench installation on the interaction of a soil-structure system is discussed.Results show that soil arch is formed when the backfill on the culvert reaches a certain height.It can relieve the earth pressure concentration on the crest of the culvert, but it is instable.The earth pressures obtained by full scale experiment and numerical simulation are greater than those calculated by the current CGCDHBC method.The eccentric load effect on the culvert has a significant influence on the stress states and deformation of the soil-structure system.
- 现行公路桥涵设计通用规范中的线性土压力理论不能准确反映非对称沟埋式涵洞结构的实际受力特性.结合现场试验和数值模拟研究了沟谷非对称设涵时, 涵-土体系的受力状态和变形特性以及涵顶填土内部的土拱效应.讨论了偏载效应对涵-土体系受力和变形的影响.研究结果表明, 涵顶填土达到一定高度后填土内部产生土拱效应, 该土拱效应能够缓解涵顶的应力集中, 但其具有不稳定性.现场试验和数值模拟得到的涵顶土压力均大于现行公路桥涵设计通用规范的计算结果, 而且偏载效应对涵-土体系的受力状态和变形特性的影响也不容忽视.
References:
[1] Kang Zuo, Yang Xiaohua, Xie Yongli, et al.Disease mechanism of culvert under embankment of special high-stacked soil[J].Journal of Chang’an University:Natural Science Edition, 2006, 26(2):22-26.(in Chinese)
[2] Kang Zuo, Xie Yongli, Feng Zhongju, et al.Studies on distress mechanism of culverts by centrifugal model test[J].Chinese Journal of Geotechnical Engineering, 2006, 28(6):784-788.(in Chinese)
[3] Zhang Weibin, Liu Baojian.Disease mechanism and control method of culvert under high fill embankment in western mountainous region[J].Journal of China and Foreign Highway, 2007, 27(1):35-39.(in Chinese)
[4] China Highway Planning and Design Institute. General code for design of highway bridges and culverts[S].Beijing:China Communications Press, 2004.(in Chinese)
[5] Marston A, Anderson A O.The theory of loads on pipes in ditches and tests of cement and clay drain tile and sewer pipes, Bulletin 31[R].Ames, Iowa: Iowa Engineering Experiment Station, 1913.
[6] Spangler M G.A theory on loads on negative projecting conduits[C]//Proc Highway Research Board.Washington, DC, 1950:153-161.
[7] Spangler M G.Field measurements of the settlement ratios of various highway culverts, Bulletin 171[R].Ames, Iowa: Iowa Engineering Experiment Station, 1950.
[8] Karinski Y S, Dancygier A N, Leviathan I.An analytical model to evaluate the static soil pressure on a buried structure[J].Engineering Structure, 2003, 25(1):91-101.
[9] Bennett R M, Wood S M, Drumm E C, et al.Vertical loads on concrete box culverts under high embankments[J].Journal of Bridge Engineering, 2005, 10(6):643-649.
[10] Gu Anquan, Guo Tingting, Wang Xingping.Experimental study on reducing-load measurement using EPS of culvert under high-stacked soil[J].Chinese Journal of Geotechnical Engineering, 2005, 27(5):500-504.(in Chinese)
[11] Yang Xiwu, Zhang Yongxing.Study on arch action and earth pressure theory for culverts under high embankment[J].Chinese Journal of Rock Mechanics and Engineering, 2005, 24(21):3887-3893.(in Chinese)
[12] Deng Guohua, Shao Shengjun.FEM analysis on earth pressure of embedded culvert in subgrade or dike[J].Chinese Journal of Rock Mechanics and Engineering, 2004, 23(Sup 1):4356-4360.(in Chinese)
[13] Kim K, Yoo C H.Design loading on deeply buried box culverts[J].Journal of Geotechnical and Geoenvironmental Engineering, 2005, 131(1):20-27.
[14] 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.
Memo
- Memo:
-
Biography: Chen Baoguo(1981—), male, doctor, lecturer, baoguo-chen@126.com.
Foundation item: Key Plan of Science and Technology of Hubei Provincial Communication Department(No.2005-361).
Citation: Chen Baoguo, Zheng Junjie, Lu Yan’er.Soil-structure interaction of unsymmetrical trench installation culvert[J].Journal of Southeast University(English Edition), 2009, 25(1):94-98.