Instrumentation Results of New Manual for Assessing Safety Hardware Crash Tested Barriers for William P. Lane, Jr. Bridge

Two new bridge barriers were crash tested in accordance with AASHTO Manual for Assessing Safety Hardware (MASH) guidelines for future use on the William P. Lane Bridge over the Chesapeake Bay: (1) a combination barrier consisting of a reinforced concrete parapet with a top steel rail evaluated for Test Level 4 (TL-4); and (2) a combination barrier consisting of a steel parapet with a top steel rail evaluated for test levels TL-4 and TL-5. For the first test configuration, the reinforced concrete barrier was attached to a representative overhang deck slab using anchor rods. In the vicinity of the vehicle impact points, load cells were installed to measure forces in anchor bolts, and strain gauges were attached to reinforcing bars to resolve measured strain data into forces through the overhang deck slab. In the second test configuration, the steel barrier was supported by evenly spaced representative floorbeams using a bolted base plate connection. Strain gauges were attached to elements of the barrier at support locations adjacent to the vehicle impact point to evaluate force transfer through the barrier system into the base plate connections. Linear potentiometers were installed to measure lateral dynamic deflection of the barrier near the vehicle impact region. This paper presents the analysis results of the force, strain, and displacement data measured in the barrier and deck structural components during crash load testing.

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Monitoring of the framings stress-strain with strain gauges

E3S Web of Conferences ◽

10.1051/e3sconf/202016402023 ◽

2020 ◽

Vol 164 ◽

pp. 02023

Author(s):

Alexey Yurgaytis ◽

Dmitry Topchiy ◽

Andrey Shinkarenko ◽

Julia Saidova

Keyword(s):

Reinforced Concrete ◽

Laboratory Tests ◽

Construction Material ◽

Base Plate ◽

Strain Gauges ◽

Material Consumption ◽

Safety Factors ◽

Stress Strain ◽

Strain Monitoring ◽

Reference Specimens

The article describes the research methods of the stress-strain of reinforced concrete framings (piles and pylons) using embedded strain gauges. The relations of load to indirect reactive characteristics displayed by the weighing device which were obtained through laboratory tests of framings reference specimens are given. Summary tables of framings stress-strain monitoring results gained during the II Phase of construction project (after base plate concreting for piles and floor slab concreting for pylons) are included. The study of obtained results of actual framings stress will allow reducing construction material consumption through the reduction of the safety factors on reliability.

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Finite-element simulation of vehicle impact on a column in a reinforced concrete-framed structure

Asian Journal of Civil Engineering ◽

10.1007/s42107-020-00333-0 ◽

2021 ◽

Author(s):

Partheepan Ganesan ◽

B. Ramsagar

Keyword(s):

Finite Element ◽

Reinforced Concrete ◽

Finite Element Simulation ◽

Vehicle Impact ◽

Element Simulation

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Fatigue strength of steel pipe-base plate connections

Engineering Structures ◽

10.1016/0141-0296(83)90047-0 ◽

1983 ◽

Vol 5 (1) ◽

pp. 87

Author(s):

John W Fisher ◽

Chitoshi Miki ◽

Roger G Slutter ◽

Denis R Mertz ◽

William Frank

Keyword(s):

Fatigue Strength ◽

Base Plate ◽

Steel Pipe ◽

Plate Connections

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Ultimate capacity of barrier–deck anchorage in MTQ TL-5 barrier reinforced with headed-end, high-modulus, sand-coated GFRP bars

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2017-0002 ◽

2018 ◽

Vol 45 (4) ◽

pp. 263-278 ◽

Cited By ~ 2

Author(s):

Michael Rostami ◽

Khaled Sennah ◽

Hamdy M. Afefy

Keyword(s):

Highway Bridges ◽

Experimental Program ◽

Embedment Depth ◽

Reinforced Polymer ◽

Vehicle Impact ◽

Glass Fibre Reinforced Polymer ◽

Fibre Reinforced Polymer ◽

Glass Fibre Reinforced ◽

Experimental Findings ◽

Deck Slab

This paper presents an experimental program to justify the barrier design at the barrier–deck junction when compared to the factored applied transverse vehicular loading specified in the Canadian Highway Bridge Design Code (CHBDC). Compared to the dimensioning and the glass fibre reinforced polymer (GFRP) bar detailing of a recently crash-tested GFRP-reinforced barrier, the adopted barrier configurations in this paper were similar to those specified by Ministry of Transportation of Québec (MTQ) for TL-5 barrier except that the base of the barrier was 40 mm narrower and the deck slab is of 200 mm thickness, leading to reduction in the GFRP embedment depth into the deck slab. Four full-scale TL-5 barrier specimens were tested to collapse. Correlation between the experimental findings and the factored applied moments from CHBDC equivalent vehicle impact forces resulting from the finite-element modelling of the barrier–deck system was conducted followed by recommendations for use of the proposed design in highway bridges in Québec.

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Structural Behaviour of Blind Bolted Connection to Concrete-Filled Steel Tubular Columns

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.591 ◽

2010 ◽

Vol 163-167 ◽

pp. 591-595

Author(s):

Jing Feng Wang ◽

Xin Yi Chen ◽

Lin Hai Han

Keyword(s):

Analysis Model ◽

Bolted Connections ◽

Structural Behaviour ◽

Tubular Columns ◽

End Plate ◽

Moment Resisting ◽

Strength And Stiffness ◽

Plate Connections ◽

The Moment ◽

Plate Connection

This paper studies structural behaviour of the blind bolted connections to concrete-filled steel tubular columns by a serial of experimental programs, which conducted involving eight sub-assemblages of cruciform beam-to-column joints subjected to monotonic loading and cyclic loading. The moment-rotation hysteretic relationships and failure models of the end plate connections have been measured and analyzed. A simplified analysis model for the blind bolted connections is proposed based on the component method. It is concluded that the blind bolted end plate connection has reasonable strength and stiffness, whilst the rotation capacity of the connection satisfies the ductility requirements for earthquake-resistance in most aseismic regions. This typed joint has excellent seismic performance, so it can be used in the moment-resisting composite frame.

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