Experimental investigation of the shear flow zone in torsional members

Author

T. (Tarek) Alkhrdaji

Abstract

"In this study an attempt was made to examine experimentally the shear flow zone in reinforced concrete members subjected to pure torsion. The strain distribution through the shear flow zone was measured using a special concrete-embeddable strain gage units that were especially developed for this purpose. The performance and the reliability of the embeddable units were assessed experimentally prior to their application. The units were used to measure the shear flow zone in four full-size beams. It was found that the actual shear zone is smaller than the prediction of the ACI 318-95. The strain distribution through this zone was rather parabolic [sic] which indicated that reinforcement can affect the strain distribution. A rational definition of the shear flow centerline was introduced. Furthermore, discripancy with tests results were discussed. The ACI 318-95 formula for predicting the cracking torque was assessed and found to underestimate the cracking torque, a more accurate approach was proposed. Finally, an attempt was made to investigate the softening of diagonals concrete under torsion"--Abstract, page iii.

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 1998

Pagination

xviii, 184 pages

Rights

© 1998 Tarek Mohammed-Ziad Alkhrdaji, All rights reserved.

Document Type

Thesis - Citation

File Type

text

Language

English

Subject Headings

Reinforced concrete -- TestingShear flowStrains and stresses -- Measurement

Thesis Number

T 7482

Print OCLC #

39630631

Recommended Citation

Alkhrdaji, T. (Tarek), "Experimental investigation of the shear flow zone in torsional members" (1998). Masters Theses. 1725.
https://scholarsmine.mst.edu/masters_theses/1725