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Centrifugal model test and numerical simulation of vertical earth pressure on soft foundation box culvert

Journal of Central South University 2015年第9期22卷 3556-3563页

作者：张军辉姚永胜郑健龙张涛 National Engineering Laboratory of Highway Maintenance Technology (Changsha University of Science and Technology) Texas Transportation Institute Texas A&M University System College Station Hunan Province Highway Administration Bureau

To obtain the vertical earth pressure on a soft foundation box culvert and investigate the interaction of the soil-culvert-foundation system, both a centrifugal model test and a numerical simulation were conducted and the comparisons with the current methods to determine the load on a culvert were completed. The results of the model test and numerical analysis are in satisfactory agreement, which shows that the direction of the shear stress between the culvert and the adjacent embankment depends on the differential settlement between them. A vertical earth pressure concentration appears on the culvert with a rigid piles foundation because of a downward shear stress. The ratio of the load on a soft foundation culvert and the overburden pressure above the culvert raises first and then decreases as the backfill height increases. In order to reduce the load on a culvert, it is suggested to limit the stiffness difference of the foundations under the culvert and embankment and to use a light backfill over the culvert.

关键词： box culvert vertical earth pressure soft foundation centrifugal model test

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Evaluation of seismic behavior of box culvert buried in the ground through centrifuge model tests and numerical analysis

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Underground Space 2019年第2期4卷 147-167页

作者： Hitoshi Yatsumoto Yasuo Mitsuyoshi Yasuo Sawamura Makoto Kimura Maintenance Division Hanshin Expressway Company LimitedJapan Obayashi Corporation Construction DivisionJapan Department of Civil and Earth Resources Engineering Kyoto UniversityJapan

Japan has yet to establish a seismic design for road box culverts(RBCs)because past major earthquakes did not damage *** recent years,structures with enlarged sectional dimensions(the purpose of which is to optimize the internal space in RBCs)have become ***,the unknown seismic strength of such large RBCs makes RBC seismic designs increasingly *** seismic design methods have been developed for and applied to rectangular underground structures,e.g.,cut-and-cover tunnels,which are structurally similar to *** these methods are applicable to RBCs,it is uncertain whether they can be applied directly because there are currently no evaluation results from model tests on RBCs,which have unique structural features,e.g.,no haunch at the bottom of the ***,we verify a seismic behavior of an RBC and develop a method for evaluating it in order to establish a seismic design for *** conducted centrifuge model tests subjected to seismic force and a numerical analysis using an elastoplastic finite analysis method,in addition,we validated this analysis by comparing the test and analytical *** test results show RBCs will most likely develop rocking rotation when the ground strain exceeds approximately 0.08%.A comparison of the numerical and experimental results shows that this analysis can estimate the shear deformation behavior with approximately 90%accuracy in square cross-section ***,this analysis has tendency to underestimate the axial forces in each case and to overestimate the bending moments of some members in the case of wide cross-sections.

关键词： box culvert Centrifuge model test Numerical analysis Shear deformation Rocking rotation

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A CAD Process for box culvert Structure Design

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Computer Aided Drafting,Design and Manufacturing 2003年第1期13卷 1-5页

作者： ZhangMengmei ShiFazhong ShiWeixin DepartmentofMechanicalEngineering BeijingUniversityofAeronauticsandAstonauticsBeijing100083China BeijingInstituteofIrrigationWorks Beijing100044China

CAD process for structure design of box culvert is introduced. It follows the traditional way of culvert design. All working conditions of culvert are taken into account. It can generate load diagram, bending moment diagram and bending moment envelope diagram for a single-hole, double-hole or triple-hole box culvert .That is to say, the whole CAD process for the box culvert structure design is realized with the self-developed system. It has been used to accomplish several projects in China and the results are satisfactory.

关键词： box culvert structure design visual C++ CAD

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A CAD Process for box culvert Structure Design

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CADDM 2003年第Z1期 1-5页

作者： Zhang Mengmei 1 Shi Fazhong 1 Shi Weixin 2 1Department of Mechanical Engineering, Beijing University of Aeronautics and Astonautics, Beijing 100083, China 2Beijing Institute of Irrigation Works, Beijing 100044, China

关键词： box culvert structure design visual C++ CAD

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Seismic Performance Assessment of Reinforced Concrete box culverts under Near and Far Fault Seismic Ground Motion Records

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World Journal of Engineering and Technology 2022年第1期10卷 40-58页

作者： Lawali Moussa Laminou Wadslin Frenelus Md Ratan Bhuiyan Md Ibrahim Bhuyan Department of Civil Engineering College of Civil Engineering and Architecture China Three Gorges University Yichang China Department of Hydraulic Engineering College of Hydraulic and Environmental Engineering China Three Gorges University Yichang China

Studying the critical response characteristics of reinforced concrete box culverts with diverse geometrical configurations under seismic excitations is a necessary step to develop a reasonable design method. In this work, numerical analysis and assessment of reinforced concrete box culverts for seismic loading in addition to standard static loading from dead and live loads is conducted, aiming to highlight the critical difference in the seismic performances between two and three cell box culverts under near and far-fault ground motion. The results show how and where the seismic loading alters the responses of seismic loading of the models including the effect on safety and failure. The geometrical configurations of the culvert combined with the loading scenarios also significantly influence the magnitude and distribution of the seismic responses. The findings of this work shed light on the critical role of the geometrical configurations and shaking event in the seismic responses of reinforced concrete box culverts and this procedure can be applied as seismic assessment method to any culvert shape, size, and material.

关键词： box culvert Seismic Loading Near-Fault Ground Motion Far-Fault Ground Motion Seismic Assessment

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