Experimental Study and Numerical Simulation on Concrete Box Culverts in Trenches

Chen, Baoguo; Jun-jie, Zheng; Han, Jie

doi:10.1061/(asce)cf.1943-5509.0000098

Cited by 31 publications

(17 citation statements)

References 5 publications

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“…The HY‐8 program of the FHWA software package and the HEC‐RAS program for water surface profiles of the Army Corps of Engineers in the USA are two basic programs used by the State Highway Administration (USA) for the analysis of culvert flows. Important additional information about culvert design is included in the AASHTO studies (,) and studies by many other authors (Charbeneau et al ., ; Haderlie and Tullis, ; Sezen et al ., ; Tullis and Robinson, ; Tullis et al ., ; Chen et al ., ; Singley and Hotchkiss, ; Ahmed and Alarabi, ; Azamathulla and Ghani, ; Sicking et al . ).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effectiveness of road‐crossing drainage culverts in ephemeral streams

Conesa-García

García-Lorenzo

2012

Hydrological Processes

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The present study proposes a method for evaluating the effectiveness of road‐crossing drainage culverts in ephemeral streams. This approach is focused on estimating the culvert capacity in road–stream crossings and the probable runoff generated on the road from hydrological thresholds associated with hydromorphological criteria. In particular, discharges at bankfull and flood‐prone stages have been used in combination with 2.5 and 100‐year peak discharges. Different hydraulic variables have been considered for calculating the discharge through culverts under these conditions (e.g. tailwater and headwater depth, inlet control, pipe roughness, pipe cross‐area and slope, pipe outlet velocity, critical water depth, and flow rate over the road). Geomorphological factors such as bed stability, bed load transport, and channel roughness have also been considered because of their potential for obstructing the drains in this type of channel. In addition, a potential obstruction index (PIOBSTR) has been calculated, as a dependent parameter of the obstacle index (IOBST) and the potential build‐up of coarse sediments (PBCS). The study has been carried out on the Mediterranean coast in the region of Murcia (Spain), where there are numerous examples of road–stream crossings equipped with culverts in ephemeral channels that could cause highly dangerous situations for road traffic. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Evaluating the effectiveness of road‐crossing drainage culverts in ephemeral streams

Conesa-García

García-Lorenzo

2012

Hydrological Processes

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“…And it has an important reference value for calculating the earth pressure of pipe under different conditions. In addition, Chen et al [35] also used a similar nonlinear earth pressure regression equation, and the results validated the feasibility of the method. At the same time, the nonlinear earth pressure calculation formula proposed in this paper also has some limitations.…”

Section: Discussionmentioning

confidence: 88%

“…According to the model tests results, the pressure on the crown of the pipe presents a nonlinear change with the increase of the filling height, which is caused by the load transition inside the backfill on the crown of the pipe. Considering the influence of load transition on pipe, the following nonlinear earth pressure calculation formula of pipe is proposed, and the undetermined coefficients in the formula are determined by the nonlinear regression analysis of the data measured by model tests [35]:…”

Section: (4) China General Code For Design Of Highway Bridges Andmentioning

confidence: 99%

Model Tests of Earth Pressure on Buried Rigid Pipes and Flexible Pipes underneath Expanded Polystyrene (EPS)

Xiao

2019

Advances in Civil Engineering

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To obtain the optimal load-reduction scheme and calculation method of earth pressure on the crown of the pipe, the load-reduction efficiency of rigid pipe and flexible pipe with different thicknesses and layers of expanded polystyrene (EPS) is investigated by model tests, and the law of load reduction is obtained by analyzing the earth pressure and the displacements of the filling around the pipe. The test results show that the earth pressure is obviously reduced with EPS laying on the crown of pipe, and the load-reduction efficiency is increased to be constant with increasing of EPS thickness. In the case that the summation thickness of EPS is constant, the load-reduction efficiency of EPS with two layers spread on the pipe is higher than that of one layer only. Compared with the rigid pipe, the load-reducing effect of flexible pipe is more significant. Based on the data obtained from the model tests, the nonlinear earth pressure calculation formula obtained from regression analysis is adopted, and the results from it are compared with the existing formula consequences of the earth pressure on the buried pipe. The results show that the earth pressure calculated by nonlinear earth pressure theory is on the brink of that tested in the field. The research results can provide references for selection of load-reduction measures and calculation of earth pressure on the crown of the pipe.

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“…Nevertheless, it is important to note that the trench type installation ( Figure 1a) creates a positive arching effect that is the opposite, in terms of soil pressure redistribution, of the embankment type installation (Figure 1b), which generates a negative arching effect (Chen et al 2010;Oshati et al 2012;Chaloulos et al 2015). The positive arch effect transfers the load from the soil directly above the trench to the side fills.…”

Section: R a F Tmentioning

confidence: 98%

“…It is this complex iterative process, together with the fact that the earth load depends not only on the geotechnical parameters of the embankment but also on the construction procedures (e.g. compaction energy), that makes the estimation of the stresses acting on the structure a sequence of assumptions, which can result in a far from accurate, usually over-conservative, structural design (Ebeling and Mosher 1996;Hansen et al 2007;Chen et al 2010Chen et al , 2016O'Neal and Hagerty 2011;Oshati et al 2012). However, although it is well-known that classic theories to predict geometry and magnitude of earth pressures around a box culvert (BC) are more than likely to produce results substantially different from reality, a more satisfactory model is yet to be developed.…”

Section: Introductionmentioning

confidence: 99%

Experimental behaviour of concrete box culverts — comparison with current codes of practice

2019

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It is now accepted that current expeditious models for determining earth pressures on flexible underground structures under compacted layers do not include several technical nuances of the soil–structure interaction. Thus, these models are not capable of delivering an optimized design. The present paper compares the results from the well-known American Association of State Highway and Transportation Officials (AASHTO) model with two different numerical models — a user-friendly elastic model and a more robust finite element model — and with results retrieved from a full-scale monitoring of a concrete box culvert, 5.5 m high and 3.77 m width, over which a 15 m high embankment was built. This structure was instrumented selectively, over a period of almost 1 year, during which several parameters were recorded, including earth pressures and structural deformation. Results have shown that the two most significant drawbacks associated with the use of the AASHTO model are the inadequate evaluation of vertical pressure on the top slab and the coefficient of earth pressure, which results in a significant overestimation of the lateral pressures and, consequently, in an overall inefficient design of the structure.

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Experimental Study and Numerical Simulation on Concrete Box Culverts in Trenches

Cited by 31 publications

References 5 publications

Evaluating the effectiveness of road‐crossing drainage culverts in ephemeral streams

Evaluating the effectiveness of road‐crossing drainage culverts in ephemeral streams

Model Tests of Earth Pressure on Buried Rigid Pipes and Flexible Pipes underneath Expanded Polystyrene (EPS)

Experimental behaviour of concrete box culverts — comparison with current codes of practice

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