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International Concrete Abstracts Portal

Showing 1-5 of 12 Abstracts search results

Document: 

SP130

Date: 

January 1, 1992

Author(s):

Editors: George A. Senkiw and Harry B. Lancelot III

Publication:

Symposium Papers

Volume:

130

Abstract:

SP130 This publication presents 11 papers on the subject of anchors in concrete, design and behavior. Subject matter include design guidelines for anchorage to concrete; evaluation of expansion anchor ultimate tensile capacity prediction equations; load-relaxation tests on heavy duty sleeve and lead caulking expansion anchors; behaviors and design of ductile multiple-anchors steel-to-concrete connection; behavior design, and testing of anchors in cracked concrete; embedment design examples based on ACI 349 Appendix B; behavior of fasteners under monotonic or cyclic shear displacements; static and dynamic long-term behavior of anchors; pull-out tests on steel embedments in concrete; lateral blow-out failure of headed studs near a free edge; and testing and analysis of base plate connections.

DOI:

10.14359/14162


Document: 

SP130-02

Date: 

January 1, 1992

Author(s):

R. Walther, C. Sutton, and D. Meinheit

Publication:

Symposium Papers

Volume:

130

Abstract:

Nine equations that predict ultimate tensile capacity for expansion anchor installations failing by formation of a concrete cone are reviewed. The equations predict the tensile capacity for anchors installed in unreinforced, uncracked concrete; group and edge effects are not considered. A data base consisting of the results from 927 tests was used to evaluate the accuracy of the prediction equations. Multiple regression statistics were utilized to ascertain how individual variables affected prediction accuracy. For shallow embedments, all nine equations yield satisfactory or conservative predictions. For deeper embedments, predicted capacity is less conservative. In general, empirical equations developed by curve-fitting experimental data are more accurate than semi-empirical models.

DOI:

10.14359/1266


Document: 

SP130-01

Date: 

January 1, 1992

Author(s):

H. Wiewel

Publication:

Symposium Papers

Volume:

130

Abstract:

Design information for concrete anchors is summarized in this paper. Based on recent research, the tension and shear capacities published in the past for concrete anchors are generally unconservative, especially data for proprietary concrete anchors. This paper recommends new design parameters for seven categories of concrete anchors. The parameters, presented in tabular form, are related to tension zone cracking and seismic loading, as well as spacing and edge distance.

DOI:

10.14359/1265


Document: 

SP130-07

Date: 

January 1, 1992

Author(s):

E. Vintzelou and R. Eligehausen.

Publication:

Symposium Papers

Volume:

130

Abstract:

An experimental program was carried out to investigate the behavior of metallic fasteners (undercut, torque-controlled, expansion, and chemical anchors) embedded in cracked concrete and subjected to shear displacements. The results show that the behavior of all three types of anchors under shear displacements is similar. Fasteners situated close to an edge and loaded towards the edge exhibit brittle concrete failure. Cyclic loadings are possible only for displacements that are much lower than the values corresponding to the monotonic peak load. Fastenings away from an edge will cause steel failure with large displacements. During cyclic loading, a severe force-response degradation was observed. Empirical formulas are proposed to predict the strength of anchors, as well as strength degradation during cyclic loading.

DOI:

10.14359/1272


Document: 

SP130-11

Date: 

January 1, 1992

Author(s):

P. Carrato

Publication:

Symposium Papers

Volume:

130

Abstract:

Paper describes experimental and analytical investigation of the performance of base plates subjected to relatively large overturning moments. The experimental work established performance characteristics and ultimate failure modes for four different base plate configurations in which plate thickness and bolt stiffness are independent variables. The analytical investigation used standard linear elastic finite element models to predict experimental results. Recommended finite element modeling techniques are included.

DOI:

10.14359/1277


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