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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.
Showing 1-5 of 16 Abstracts search results
Document:
SP273-12
Date:
September 20, 2010
Author(s):
Richard J. Beaupre, Robert B. Anderson, and Velvet Bridges
Publication:
Symposium Papers
Volume:
273
Abstract:
This example demonstrates strut-and-tie principles to design an internal diaphragm for a segmental concrete girder bridge. The diaphragm carries vertical shear and torsion from the webs of the box girder around the access opening to the bearings on the pier cap. Tie forces are determined, and reinforcing steel is selected. Stress checks for the struts and nodal zone are provided.
DOI:
10.14359/51682300
SP273-13
Trevor J. Kirkpatrick and Robert B. Anderson
This example demonstrates strut-and-tie principles to design an internal diaphragm for an extradosed cable stayed bridge with a cast-in-place segmental box girder. The diaphragm carries vertical shear from the webs of the box girder around access openings to the indirect bearings on a tower strut. Several models are investigated before the design model is presented. Tie forces are determined, and reinforcing steel is selected. A computer program is introduced to perform the detailed (and often iterative) stress checks for the struts and nodal zones, and sample calculations for the struts and nodal zone stresses are provided.
10.14359/51682301
SP273-14
Denis Mitchell, William D. Cook, and Ting Peng
This paper describes the collapse of the Concorde Overpass that was partly due to improper hanger reinforcement details in the disturbed region (D-region) of the beam seat. A review of the evolution of the hanger reinforcement details in dapped end beams given in different versions of the PCI Design Handbook is presented. The results of a series of experiments on dapped end beams with different hanger reinforcement details are described. Guidance from these tests and other experiments on the details of anchorage of the hanger reinforcement in dapped end beams is provided.
10.14359/51682302
SP273-15
Karl-Heinz Reineck
The sectional shear design in B-regions of beams according to the empirically derived rules given in Ch. 11 of ACI 318-08 leads unavoidably to discrepancies when separately designing the adjacent D-regions by using a strut-and-tie model according to Appendix A of ACI 318-08. A “full member design” with the truss is the only model providing a consistent transition from B- to D-regions, in which the angle of the inclined struts in the webs of beams can be derived from the rules given in Ch. 11 of ACI 318-08. Furthermore two important D-regions in beams are dealt with, which are the D-region where a point load is applied near the support and the D-region where a beam is indirectly supported by another beam. Finally a list of references is given for further guidance in application of strut-and-tie models or could serve as basis for writing such a document.
10.14359/51682303
SP273-07
Gary J. Klein
This example describes the design of the support region of dapped-end double-tee beam, the type of beam typically used in parking structures. The strut-and-tie model (STM) employs curved-bar nodes, the bend region of a continuous reinforcing bar (or bars) whose straight extensions form two ties in a strut-and-tie model.
10.14359/51682295
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