Calculation of Internal Force of Axial Tension Member due to Temperature Variation Accounting for Cracking

Abstract:

Internal force of a concrete member duo to temperature variation is related to stiffness. A reduction of stiffness occurs and the magnitude of the internal forces drops from the values existing before cracking when cracking occurred due to temperature variation. Internal force of axial tension member due to temperature variation developed in a jagged style with cracking. Calculation method of internal force and stiffness reduction coefficient of axial tension member due to temperature variation was presented accounting for cracking. Given example shows stiffness reduction coefficient has a close relationship with number of cracks and steel ratio. Member with high steel ratio subjected to the same temperature variation has more cracks and smaller crack width.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 1692-1695
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.1692
• Online since: December 2010
• Authors: Yu Ming Zhang, Guang Sheng Bian, Tao Fan
• Keywords: Axial Tension, Concrete, Crack, Internal Force, Stiffness, Temperature Variation

References

[1] Code for Design of Concrete Structures of China(GB50010-2002), (2002).

[2] Mamdouh Elbadry, Amin Ghali. Control of Thermal Cracking of Concrete Structure[J]. ACI Structural Journal, 1995, 92(3): 435-450.

[3] CEB-FIP MODEL CODE 1990[S].

[4] ACI committee 224. Control of Cracking in Concrete Structures. American Concrete Institute.