Model test and numerical simulation on rigid load shedding culvert backfilled with sand

Chen, Baoguo; Song, Dingbao; Mao, Xinying; Chen, Elton J.; Zhang, Jun

doi:10.1016/j.compgeo.2016.05.026

Cited by 14 publications

(6 citation statements)

References 14 publications

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“…So, to avoid excessive loading of the lining, load shedding measures can be used which have already been adopted in high-fill culverts and pipes [31]. For instance, the load shedding layer was installed above the structure to decrease the settlement difference between the inside and outside soil columns, which reduced the loading of the open-cut structure [32].…”

Section: Earth Pressure Test Results and Discussionmentioning

confidence: 99%

Research on the Earth Pressure and Internal Force of a High-Fill Open-Cut Tunnel Using a Bilayer Lining Design: A Field Test Using an FBG Automatic Data Acquisition System

Wang

et al. 2019

Sensors

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When there are railway tunnels on both sides of a valley, a bridge is usually built to let trains pass. However, if the valley is very close to an urban area, building an open-cut tunnel at the portal and then backfilling it to create available land resources for the city and to prevent excavation slag from polluting the environment would be a wise choice. This has led to the emergence of a new type of structure, namely, the high-fill open-cut tunnel. In this paper, by performing an automatic long-term field test on the first high-fill open-cut tunnel using a bilayer design in China, the variations of earth pressure and structural internal force during the backfilling process were obtained, and different tunnel foundation types were studied. The results showed that the earth pressure significantly exceeded the soil column weight, with a maximum earth pressure coefficient between 1.341 and 2.278. During the backfilling process, the earth pressure coefficient increased at first and then decreased slowly to a relatively stable value, and a stiffer foundation would make the structure bear higher earth pressure (1.69 times the normal one observed during monitoring). The change of internal force had two stages during backfilling: before the backfill soil reached the arch crown, the internal force of the lining changed slowly and then grew linearly as the backfill process continued. Moreover, the axial force ratio of the inner and outer linings was close to their thickness proportion, and the interaction mode between the two layers was very similar to the composite beam.

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Section: Earth Pressure Test Results and Discussionmentioning

confidence: 99%

Research on the Earth Pressure and Internal Force of a High-Fill Open-Cut Tunnel Using a Bilayer Lining Design: A Field Test Using an FBG Automatic Data Acquisition System

Wang

et al. 2019

Sensors

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“…Due to the increasing popularity of buried shell structures in civil engineering, an effort should be made to gain the best insight possible into the behaviour and characteristics of such structures (Chen et al 2016;Sanaeiha et al 2017;El-Sawy 2003).…”

Section: Discussionmentioning

confidence: 99%

Laboratory Full-Scale Comparative Tests of Rigid and Flexible Foundations of Buried Steel Structures

Wysokowski

Mońka²

2020

Int J Steel Struct

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The technical issues described in the article concern the aspects of the implementation of foundations for buried flexible steel structures. The modernity of these objects has surpassed the solutions applied for their foundations. The foundations of these structures are most frequently made as traditional "rigid" structures (which is related to their massiveness-most commonly made of reinforced concrete). The article discusses laboratory comparison tests of two types of foundations of a buried flexible structure-a rigid (concrete) and flexible foundation (made as corrugated steel plates) and their results.

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“…The essence, and at the same time the fundamental difference between the finite element method and the analytical methods used to design a structure, is that it allows building a closer reality of the object model (a complex structure) [14]. As a result, phenomena occurring in the analyzed centers are modelled in a manner similar to the actual distribution of stresses [15,16].…”

Section: Calculation Methods For Reinforcing Culvert Structuresmentioning

confidence: 99%

Durability and modern technologies of strengthening culverts and animal crossings

Wysokowski

2019

MATEC Web Conf.

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The paper discusses selected issues regarding to repair and reinforcing methods of the of culverts and animal crossing structures. Information was also provided on materials used for construction, and renovation of culverts. In addition, the paper discusses the most commonly used technologies of reinforcing and reconstructing these objects. Particular attention has been paid to the ways of selecting the reinforcement method and systems, taking into account the properties of the materials used in the renovation of these structures. In addition, the paper, according to the author, arranges also issues related to the proper performance of renovation for road culverts.

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Model test and numerical simulation on rigid load shedding culvert backfilled with sand

Cited by 14 publications

References 14 publications

Research on the Earth Pressure and Internal Force of a High-Fill Open-Cut Tunnel Using a Bilayer Lining Design: A Field Test Using an FBG Automatic Data Acquisition System

Research on the Earth Pressure and Internal Force of a High-Fill Open-Cut Tunnel Using a Bilayer Lining Design: A Field Test Using an FBG Automatic Data Acquisition System

Laboratory Full-Scale Comparative Tests of Rigid and Flexible Foundations of Buried Steel Structures

Durability and modern technologies of strengthening culverts and animal crossings

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