In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Thermal stresses from one-sided heating of asymmetric composite span
Author(s): J. Karlikowski
Appears on pages(s): 609-628
Keywords: thermal stresses
Abstract:The aim of this paper is to determine thermal stresses in a span of a railway bridge of steel-concrete composite structure. It is a simple-supported span with two main girders. One of the steel girders is heated considerably, that leads to elongation, bending and torsion of the entire span as well as formation of normal. Thermal normal stresses. This article presents a solution to this problem for a temperature distribution in the section of the heated girder as shown in Fig. 2b. It has been assumed that the temperature distribution does not change along the span length. The span has bee treated as a thin-walled bar with asymmetric non-deformable open section. A general formula for normal thermal stresses has been developed (2.5)2 as well as relationships presenting geometrical thermal characteristics of the section (5.10). Function β (x) characterizing the torsional stress distribution along the span length has been determined and an analytical program has been developed. An example of analytical results also has be3en included in this article. The model of a thin-walled bar leads to a thermal stress distribution in the slab which differs considerably from the stress distribution from the model of a plane beam, which is commonly used for analysis. Including torsion in the analysis has a significant impact on the thermal stress distribution in the cross-section of the span. It also causes the stresses to change along the length of the span, despite the uniform temperature distribution in all cross-sections.
Polish Academy of Sciences, International Partner Access.
View Resource »