Experimental Study on Characteristics of Deformation for Concrete Track on Railway Bridge Deck End induced by Bridge End Rotation

In order to reduce early damage of bridge deck pavement concrete in cold regions, a certain content of nano-SiO2 is added into the concrete to enhance its durability. Through tests on four durability indexes, strength, frost resistance, resistance to Cl− ion permeability, and abrasion resistance of concrete with 1% nano-SiO2 content and concrete without nano-SiO2, the ability of nano-SiO2 to improve the concrete durability of bridge deck pavement is evaluated. The results of tests and analysis show that the incorporation of nano-SiO2 greatly improves the four durability indexes. Nano-SiO2 effectively absorbs the calcium hydroxide released early by the hydration of cement, increases the calcium silicate hydrate content, and elevates the interface between the paste and aggregate of the hardened cement, which improves the durability of the concrete.

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Experimental Study on Bearing Capacity of Glass Bridge Deck under Different Wheel Compression Positions

Tehnicki vjesnik - Technical Gazette ◽

10.17559/tv-20190520041055 ◽

2019 ◽

Vol 26 (5) ◽

Keyword(s):

Experimental Study ◽

Bearing Capacity ◽

Bridge Deck

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Field and numerical investigation of the effect of under-sleeper pads on the dynamic behavior of railway bridges

Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit ◽

10.1177/0954409718764027 ◽

2018 ◽

Vol 232 (8) ◽

pp. 2126-2137 ◽

Cited By ~ 2

Author(s):

Jaber Mottahed ◽

Jabbar A Zakeri ◽

Saeed Mohammadzadeh

Keyword(s):

Numerical Investigation ◽

Dynamic Behavior ◽

Field Experiments ◽

Bridge Deck ◽

Numerical Models ◽

Bridge Decks ◽

Span Length ◽

Railway Bridge ◽

Railway Bridges ◽

Northern District

There is a growing need to minimise vibrations of railway structures, especially the railway bridges, due to the increasing speed of trains. Various methods are used to reduce the effects of vibration on bridges. One of the methods is using under-sleeper pads. In this study, a real railway bridge – located in the northern district of Iran – with two spans and a free span length of 7 m was selected for the investigation of the effect of under-sleeper pads on the reduction of vibrations imposed on railway bridges. Field experiments – including the installation of an accelerometer to measure the accelerations beneath bridge decks, on the rail web, and next to the sleeper, and also the installation of Linear variable differential transformers (LVDTs) to measure the displacements of midspan point of bridge decks – were conducted. The effect of under-sleeper pads on the reduction of vibration accelerations, displacements, and moments of bridge midspan was investigated by developing numerical models of the bridge and validating its results through experimental outputs. The modeling predicts that the reduction of acceleration imposed on the deck in the first and second spans was different; the reduction effects in the first span were higher, where there was 58% reduction after using under-sleeper pads beneath the sleepers. There was a 15% decrease in the displacement of the bridge deck when under-sleeper pads are used. Similar results were obtained for the midspan moment of the bridge which reduced by 16%.

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Experimental Analysis of Stiffness of the Riveted Steel Railway Bridge Deck Members’ Joints

Civil and Environmental Engineering ◽

10.2478/cee-2014-0019 ◽

2014 ◽

Vol 10 (2) ◽

pp. 105-110

Author(s):

Jozef Gocál ◽

Richard Hlinka ◽

Jozef Jošt ◽

František Bahleda

Keyword(s):

Stress Response ◽

Experimental Analysis ◽

Bridge Deck ◽

Bending Stiffness ◽

Traffic Load ◽

Structural Members ◽

Railway Bridge ◽

The Real ◽

Steel Railway Bridge ◽

Main Girder

Abstract The paper deals with the real behaviour of the riveted steel railway bridge deck members’ connections with respect to their bending stiffness. Attention is paid to the stringer-to-cross beam connection as well as the cross beam-to-main girder connection. The stiffness of the two connections is investigated on the basis of evaluation of the experimentally determined stress response of the observed structural members to the actual traffic load on an existing railway bridge.

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