Investigation of Extreme Environmental Conditions and Design Thermal Gradients during Construction for Prestressed Concrete Bridge Girders

Lee, Jong-Han

doi:10.1061/(asce)be.1943-5592.0000277

Cited by 67 publications

(51 citation statements)

References 16 publications

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“…This complexity comes from the required calculations to determine the view factors of each point on each surface with respect to all of the other surface points on the visible boundaries. Due to its complexity, generally, there was a tendency of previous researchers (Dilger et al 1983;Elbadry and Ghali 1983;Prakash Rao 1986;Clark 1989;Mirambell and Aguado 1990;Moorty and Roeder 1992;Fernando and Mendes 1993;Li et al 2004;Wang et al 2010;Larsson and Thelandersson 2011;Carboni and Lacarbonara 2012;Lee 2012;Lee and Kalkan 2012;Song et al 2012) to ignore the surface-to-surface radiation. After conducting an extensive search, to the best of the authors' knowl-edge, none of the previously reviewed studies included surface-to-surface radiation.…”

Section: Application Of Boundary Conditionsmentioning

confidence: 99%

Temperature Distributions and Variations in Concrete Box-Girder Bridges: Experimental and Finite Element Parametric Studies

Tayşi

Abid

2015

Advances in Structural Engineering

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In this research, a full-scale, experimental box-girder bridge segment and three dimensional finite element thermal studies were conducted to investigate the temperature distributions and variations in concrete bridges under environmental thermal loads, with particular reference to the influence of the thermal properties of concrete. Applicable ranges of the studied properties were gathered from an extensive literature survey. One-way analysis of variance was used to evaluate the effect of the concrete properties of interest, demonstrating that density and surface emissivity have negligible effects. Parametric studies showed that the combined effects of thermal conductivity, specific heat, and solar absorptivity may increase the maximum bridge temperature by approximately 25%. Analysis of extreme thermal conditions indicated that these combined effects increased the mean bridge temperature by approximately 15 to 20%. Moreover, it may cause vertical temperature gradients exceeding the AASHTO's and the Bridge Manual's vertical gradients by up to 10°C.

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Section: Application Of Boundary Conditionsmentioning

confidence: 99%

Temperature Distributions and Variations in Concrete Box-Girder Bridges: Experimental and Finite Element Parametric Studies

Tayşi

Abid

2015

Advances in Structural Engineering

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“…The results show that, among the four AASHTO-PCI sections, the deeper and wider sections of Type-V and BT-63 girders exhibited the largest vertical and transverse temperature differentials. Figure 7: Vertical thermal gradient of prestressed concrete bridge girders [47].…”

Section: Finite Element Methodmentioning

confidence: 99%

“…In addition, these measurement results confirmed that cross sectional temperature distribution is a function of only the height measured from the soffit. Lee [47] distribution were measured. The daily maximum vertical temperature difference, as shown in Figure 10, was the largest in the summer and decreased from summer to winter.…”

Section: Concrete Bridgementioning

confidence: 99%

Thermal Load in Large-Scale Bridges: A State-of-the-Art Review

Zhou

2013

International Journal of Distributed Sensor Networks

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Thermal load is an important factor that must be taken into account during the procedure of bridge design and structural condition evaluation especially for those statically indeterminate bridges and cable-supported bridges. This paper presents an overview of current research and development activities in the field of thermal load in bridge, in which emphasis is placed on the thermal load models established by numerical analysis and field measurement. The theoretical formulations and boundary conditions of heat transfer in bridge are firstly outlined. And then, the states of the art of numerical solutions for temperature distribution in bridge including finite difference method and finite element method are reviewed in detail. Following that, the progress on thermal load in three types of representative bridges that are concrete bridge, steel-concrete composite bridge, and steel bridge based on field measurement data is discussed extensively. Finally, some existing problems and promising research efforts about thermal load in bridge are remarked.

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“…To analyse the lateral movement induced by various environmental conditions, the lateral thermal gradient and an analytical method for precast I-girders were proposed (Lee, 2012b;Lee and Kalkan, 2012). In addition, Hurff and Kahn (2012) carried out an experimental and analytical study on the lateral instability of a 30 m long precast prestressed concrete bridge girder.…”

Section: Introductionmentioning

confidence: 99%

Rollover instability of precast girders subjected to wind load

Lee¹,

Kalkan²,

Lee³

et al. 2017

Magazine of Concrete Research

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The use of longer and deeper precast concrete girders has created concern regarding their rollover instability, particularly during construction. Current design and construction specifications do not provide any specific guidelines that can be used to evaluate the rollover instability of a girder. Therefore, analytical and simplified numerical studies were performed to evaluate the critical wind load, lateral displacement and rotational angle that would induce rollover instability of a girder supported on an elastomeric bearing pad. The influence of the length and section properties of the girder on rollover instability was also investigated. The analytical method proposed in this study can be effectively used for evaluating the lateral behaviour and rollover instability of bridge girders and can also provide management values for securing the lateral stability of girders. The paper also provides a worked problem for a long-span typical European girder to determine critical values with application of the proposed method.

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Investigation of Extreme Environmental Conditions and Design Thermal Gradients during Construction for Prestressed Concrete Bridge Girders

Cited by 67 publications

References 16 publications

Temperature Distributions and Variations in Concrete Box-Girder Bridges: Experimental and Finite Element Parametric Studies

Temperature Distributions and Variations in Concrete Box-Girder Bridges: Experimental and Finite Element Parametric Studies

Thermal Load in Large-Scale Bridges: A State-of-the-Art Review

Rollover instability of precast girders subjected to wind load

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