Field Test and Numerical Simulation of Mechanical Characteristicof Culverts under High Embankments
[1]ZHAO Jianbin,SHEN Junmin,DONG Lishan.Field Test and Numerical Simulation of Mechanical Characteristicof Culverts under High Embankments[J].Journal of Zhengzhou University (Engineering Science),2014,35(03):112-115.[doi:10.3969/j.issn.1671-6833.2014.03.027]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35
Number of periods:
2014 03
Page number:
112-115
Column:
Public date:
2014-06-30
- Title:
- Field Test and Numerical Simulation of Mechanical Characteristicof Culverts under High Embankments
- Keywords:
- road engineering; verlical earth pressure ; coneentralion faelor; culvert; offset load elfeel
- CLC:
- U416.1
- Abstract:
- Based on the projeet of the culvert under high embankment in the expressway from Kelan to Linx-ian, the vertieal earth pressure and the stress of the culvert areh ring are monitored by the field tests, and ae-eording to the monitoring results, the analysis on the distribution characteristies and variation laws are condue.ted. Meanwhile, in order to verily and study the monitoring results, a 3D finite differenee model has beenbuilt to obtain the stress and displaeement fields of the high fill embankment. The results show that. the stiffness dilflerenee belween the eulvert and the fill is the main reason of the coneentration of the vertical earthpressure on the top of culvert, and the coneentration faetor inereases signilieantly with the height of the fills inereasing at the early stage, then it remains stable; the maximum tensile stress is present to the vault of archeulvert, while the maximum compressive stress between the haunch and the skewback of the arch ring; in or.der to avoid eracking, it’s proposed that the arch ring should be reinforeed beeause of the high fill loading onthe top of eulvert; the slope ean share a part of the fill load, leading to the olfset load effeet to the structure olthe culvert, which must be noled when it is constructed near the slope.
- References:
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