Thermal stress analysis of a concrete pavement without expansion joints

Hsiang-Te, Tu

doi:10.1007/bf02323852

Cited by 1 publication

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With respect to the research of thermal stresses on concrete structures, so far, a number of studies have been conducted in high massive concrete dams [1,2] , bridges [3] , road [4] , etc.. However, a few studies has been done on concrete lining in deep alluvium freezing shaft.This paper attempts to make a numerical calculation of the temperature and thermal stress on freezing shaft lining by finite element method and engineering monitoring, in order to analyse the mechanism of thermal crack in outer shaft lining concrete at early age.…”

Section: Introductionmentioning

confidence: 99%

Finite-Element Calculation for Thermal Stresses of Concrete Lining in Deep Alluvium Freezing Shaft

Cheng

Rong³

2011

AMR

View full text Add to dashboard Cite

The inner and outer surfaces of concrete lining in deep alluvium freezing shaft are exposed to different temperatures, taking the hydration heat of cement for pyrogen. Additional stresses are therefore observed in concrete lining, owing to its marked temperature drop at early ages. This paper makes a numerical calculation of the temperature and the thermal stress on freezing shaft lining by finite element methods and engineering monitoring. The results reveal that the concrete of shaft lining has a high heat-release rate in the early age. And the time when shaft lining reaches its maximum temperature is 4 days earlier than it reaches its maximum thermal tension stresses. At the time of one day after the shaft lining pouring, the inner and outer surface of shaft lining will crack owing to its hoop tension strain is greater than ultimate tension strain. The crack of concrete will increase with the modifications of temperature.

show abstract

Section: Introductionmentioning

confidence: 99%