Development and structural testing of a composite-reinforced timber highway guardrail

Davids, William G.; Botting, J K; Peterson, Michael

doi:10.1016/j.conbuildmat.2005.01.060

Cited by 19 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methodologies for studying safety barriers encompass several aspects: data collection and accident analysis, which involve gathering and analyzing traffic accident data to study the actual performance of barriers in accidents and summarize their protective effects and existing issues [26]; structural mechanics analysis, using mechanical theory to analyze the structural strength and stability of barriers to establish reasonable design parameters [27]; computer simulation and modeling, which involve creating mathematical models of barriers and vehicles, using specialized software (such as LS-DYNA, ABAQUS) to simulate vehicle-barrier collisions and evaluate barrier performance and propose improvements [28][29][30][31][32]; laboratory-scale model testing, where scaled-down models are used in laboratory settings to conduct crash tests and validate the design's rationality and effectiveness [33]; and full-scale crash testing, where real-world crash tests are conducted to obtain performance data of barriers under actual crash conditions, assessing their protective capabilities and improvement effects [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Full-Scale Crash for Reinforced Divided Central Median W-Beam Barriers with Post-Densification

Zhang,

Wei,

Wei

et al. 2024

Preprint

View full text Add to dashboard Cite

In this study, the team employed full-scale crash tests to investigate the impact of post-densification technology on the safety performance of separated central median W-beam barriers under low compaction conditions. By precisely simulating the design and construction environment of the central median, the study comprehensively evaluated the barrier's containment, redirection, buffering, and anti-intrusion performances, as well as the deformation of both the barrier and vehicles under various collision scenarios. The results indicate that under low compaction soil conditions, the A-level separated central median barriers reinforced with post-densification technology effectively meet the specified protection requirements. By comparing the influence of soil strength variations on barrier performance under simulated rainfall conditions, it was confirmed that enhancing soil compaction significantly improves soil stability, effectively increases the overall strength and stability of the barriers, reduces deformation, and significantly enhances safety performance. This study not only validates the effectiveness of the reinforcement scheme but also provides new perspectives for the scientific research of safety barriers and offers crucial technical support for the optimal design of road safety protection facilities.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation on Full-Scale Crash for Reinforced Divided Central Median W-Beam Barriers with Post-Densification

Zhang,

Wei,

Wei

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Various types of barriers are used in the literature, including concrete, steel, plastic, and wood. All barrier types have some advantages and disadvantages compared to others (Davids et al, 2006;Yeginobali et al, 2011). In general, because of the rigid structure of concrete barriers and the fact that steel barriers contain sharp surfaces, undesirable consequences occur in both vehicles and passengers at the time of collision.…”

Section: Introductionmentioning

confidence: 99%

An innovative approach on the renewable hybrid barrier: combined use of wood and sand

Yumrutas

Birinci

Yorur

et al. 2021

CERNE

View full text Add to dashboard Cite

Background: Wooden materials have been among the basic materials used in many different areas due to some advantages throughout the history. Roadside barriers, which are called passive safety structures, can be produced with different materials such as wood, steel, concrete, and plastic. In this study, Renewable Hybrid Barriers (RHB), a new type of barrier that is used wood in terms of aesthetics, renewability, high shock resistance, and used sand in terms of impact absorption capacity and low cost, produced by taking into account some of the disadvantages of other barrier types. These barriers are planned to be used especially in historical/touristic areas, scenic roads, and in urban areas as urban furniture. Real-time crash tests in accordance with EN 1317 (Road Restraint Systems) standard require high cost and long time. Therefore, the pendulum crash test mechanism frequently used in the literature was manufactured at which the experiments were carried out. Results:The results revealed that the RHBs which has 2 cm thick timber and sand used together, were sufficient and suitable in terms of both cost and necessary safety criteria. It was observed that impregnation and heat treatment applications did not have a considerable negative effect on the performance of RHBs which provide an opportunity to use RHBs for outdoor conditions.. Conclusion:In the light of the results of the study, the optimum wood timber thickness was determined as 2 cm regarding TB 31 test criteria. It is proposed that the crash tests for different wood species, timber thickness, and/or barrier dimensions should carry out in future studies. This study can serve as the basis for the next step, real-time real crash tests. Since the study includes an interdisciplinary subject, it is thought that it will inspire different studies.

show abstract

“…Studies have shown that the layered composite structure is lighter in weight, better in impact resistance, and more designable than homogeneous materials [1,2]. Layered composite structures have been widely used in military and civilian fields [3], such as armored vehicle [4], helicopter [5], ship [6], body armor [7], helmet [8], vehicle bumper [9], and highway guardrail [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Studies of Stress Wave Propagation and Energy Dissipation Mechanism in Layered Composite Structures

Zou

Xiong

Yin

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

Four composite structures (SiC/UHMWPE/TC4, SiC/TC4/UHMWPE, SiC/UHMWPE/MR/TC4, and SiC/TC4/MR/UHMWPE) were prepared using silicon carbide (SiC) ceramics, ultrahigh molecular weight polyethylene (UHMWPE), titanium alloy (TC4), and metal rubber (MR). The transmitted waves, failure forms, stress wave propagations, and energy dissipations of the composite structures were studied through Split Hopkinson Pressure Bar (SHPB) tests and numerical simulations. The results show that MR in composite structures can delay, attenuate, and smooth the stress wave, thereby reducing SiC damage. UHMWPE on the back of SiC provides cushioning for SiC, while TC4 on the back of SiC aggravates the damage of SiC. The composite structures with MR mainly dissipate the impact energy by reflecting energy, and the energy dissipation performance is better than that of composite structures without MR. A comprehensive comparison of transmitted waves, damage forms, stress wave propagations, and energy dissipations of the four composite structures shows that SiC/UHMWPE/MR/TC4 structure has the best impact resistance. Increasing the thickness of MR in the composite structures can improve the impact resistance, but there are also stress concentration and interface tensile stress.

show abstract

Development and structural testing of a composite-reinforced timber highway guardrail

Cited by 19 publications

References 6 publications

Investigation on Full-Scale Crash for Reinforced Divided Central Median W-Beam Barriers with Post-Densification

Investigation on Full-Scale Crash for Reinforced Divided Central Median W-Beam Barriers with Post-Densification

An innovative approach on the renewable hybrid barrier: combined use of wood and sand

Experimental and Modeling Studies of Stress Wave Propagation and Energy Dissipation Mechanism in Layered Composite Structures

Contact Info

Product

Resources

About