Analysis of Horizontal Earth Pressure Acting on Box Culverts through Centrifuge Model Test

Lee, Kicheol; Kim, Joonyoung; Woo, Sang Inn

doi:10.3390/app12041993

Cited by 7 publications

(3 citation statements)

References 17 publications

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“…Some researchers experimentally examined the effect of earth pressure on box culverts and compared the results with existing theoretical models to offer design improvements [ 11 , 12 ]. Several academics have studied box culverts to understand the impact of soil-structure interaction on the performance of box culverts [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Haunch Geometry and Additional Steel Reinforcement on Load Carrying Capacity of Reinforced Concrete Box Culvert

et al. 2023

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The culverts are used to safely convey water under railways, highways, and overpasses. They are utilized in drainage areas or water channels and in areas where the bearing capacity of soil is low. The design and construction of this crucial infrastructure need to be improved to meet contemporary demands of reliability and affordability. Precast reinforced box culverts are popular alternatives as they ensure strength, durability, rigidity, and economy. This research seeks to develop an effective and affordable design improvement procedure for a precast box culvert using modern numerical tools. The Finite Element Method (FEM) based approach is used in studying the effects of haunch geometry and additional steel reinforcement on the load-bearing capacity of box culverts. A conventional box culvert is analyzed to create the numerical models in the Abaqus FEM code and to investigate the load-bearing capacity of culverts with an expanded span. The outcomes of the study reveal the critical places for stress concentration as well as the location of maximum damage. It is found that haunch geometry and additional reinforcement at these critical places significantly affect the load-carrying capacity of a culvert. From the comparison of capacity curves of models with and without haunches and diagonal reinforcement, it is found that a 25% increase in load-carrying capacity is achievable with the recommended changes. The proposed design improvement technique can be employed for the cost-effective and safe design of a concrete box culvert with larger span lengths and high water-flowing capacities. The findings of this study are expected to assist practitioners in strength enhancement tasks of box culverts for increased structural stability and drainage efficiency.

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Section: Introductionmentioning

confidence: 99%

Influence of Haunch Geometry and Additional Steel Reinforcement on Load Carrying Capacity of Reinforced Concrete Box Culvert

et al. 2023

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“…Moreover, the centrifuge model tests simulate slope failure, change retaining wall bearing pressure, and change soil-structure interactions to reproduce the actual ground stress conditions of BC [19,20]. According to the centrifuge model tests, Lee et al [21] study the seismic performance of road box culverts and summarize seismic evaluation method of road box culverts. However, the research on the flexural capacity of BC is relatively limited, which is also a significant point to reflect the working efficiency of BC.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reinforcement Forms on the Load Bearing Capacity of Prefabricated Box Culvert

Xu,

Wang,

Chen

et al. 2023

Advances in Civil Engineering

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Box culvert structure was an essential part of modern infrastructure. Due to the advantages of low pollution and convenient construction, the prefabricated box culvert (PBC) has been gradually utilized in engineering. However, the investigations on load bearing capacity of PBC in different reinforcement forms with same reinforcement ratios were still lack. In the present research, one PBC specimen was tested and discussed by the finite-element analysis (FEA) on load bearing capacity under four-point bending. The load bearing capacity of another three PBCs in different reinforcement forms with the same reinforcement ratios was discussed by the FEA. Results of experimental and numerical investigations showed that: (1) a number of flexural cracks were observed in the midspan bottom of upper slab of PBC, and finally shear failure was observed in bending–shear zone of upper slab of PBC; (2) the number of concrete cracking, plastic deformation of PBC, and stress of rebars reduced by increasing the area of tensile rebars in PBC with reducing the area of compressive rebars under same reinforcement ratios; (3) the ductility and load bearing capacity of PBC increased by increasing the area of tensile rebars with reducing the area of compressive rebars.

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“…However, this problem can be solved using the centrifugal model test. Lee et al [26] analyzed the horizontal earth pressure on a buried box culvert. The authors used centrifugal model tests to determine the earth pressure coefficient for sand with a single relative density.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Coefficient of Earth Pressure at Rest for Sand

Li,

Dai,

Liu

et al. 2023

Buildings

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The coefficient of earth pressure at rest K0 is a state soil variable correlated with relative density Dr. As previously conducted K0 tests could not guarantee zero lateral deformation in the sand specimens, significant errors occurred in the test results. In this paper, a centrifugal model test method is used to study the K0 of sand with varying densities. The sand specimens with varying relative densities are prepared by sand pluviation, and a 50 g-ton centrifugal force is applied. Subsequently, the relationship of K0 and Dr with different densities is analyzed. The test results show that for the same type of sand, the value of K0 gradually increased with Dr. Based on the meso-evolution characteristics of sand particle recombination, various relationships between K0, the displacement deflection angle, and the friction offset angle between particles are analyzed. Furthermore, the relationship between particle volume fraction and K0 is derived, the assumption of increasing the coefficient K0 with the increase in Dr is verified, and the effect of Dr of sand on the force transfer behavior of the internal particle fabric is briefly discussed. The research results could significantly improve the current earth pressure theories.

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Analysis of Horizontal Earth Pressure Acting on Box Culverts through Centrifuge Model Test

Cited by 7 publications

References 17 publications

Influence of Haunch Geometry and Additional Steel Reinforcement on Load Carrying Capacity of Reinforced Concrete Box Culvert

Influence of Haunch Geometry and Additional Steel Reinforcement on Load Carrying Capacity of Reinforced Concrete Box Culvert

Effect of Reinforcement Forms on the Load Bearing Capacity of Prefabricated Box Culvert

Experimental Study on the Coefficient of Earth Pressure at Rest for Sand

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