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Showing 1-5 of 12 Abstracts search results

Document: 

SP73

Date: 

March 1, 1982

Author(s):

Editor: Harry G. Harris

Publication:

Symposium Papers

Volume:

73

Abstract:

SP73 The small-scale dynamic model is a powerful tool for understanding structural behavior where analytical techniques are inadequate. Eleven papers are presented in this volume, beginning with similitude requirements and dynamic properties of model materials. Four papers are included on seismic loading of frame structures, frame-wall structures, arch dams, and long-span bridges. Other topics include air-blast loading of buried structures; impact loadings on beam-to-column joints and on reinforced concrete slabs; and vibration studies of both floor slabs and large panel buildings.

DOI:

10.14359/14125


Document: 

SP73-11

Date: 

March 1, 1982

Author(s):

Harry G. Harris and George Jau-Jyh Wang

Publication:

Symposium Papers

Volume:

73

Abstract:

This paper presents a methodology for designing, fabricating, and testing small-scale dynamic models of precast concrete shearwalls originating in the construction of large panel precast concrete buildings. Design and construction of a set of 3/32-scale models which satisfy dynamic similitude is presented. Resonent vibration testing of three-story and five-story precast concrete shearwall models on a small shake table is described. Additional monotonic and cyclic tests on six five-story shearwall models under simulated earthquake loading are presented. The main parameters in these tests were the amount of steel in the vertical ties and cyclic versus monotonic loading.

DOI:

10.14359/6781


Document: 

SP73-10

Date: 

March 1, 1982

Author(s):

H.Faruk Karadogan,Le-Wu Lu, and Ti Huang

Publication:

Symposium Papers

Volume:

73

Abstract:

Small size models of two concrete floor systems have been tested for their elastic and post-elastic behavior under in-plane shear action. Parameters studied include cyclic and monotonic loading, shear span aspect ratio, effect of gravity load and repair by epoxy injection method. This report describes the development of the model and techniques used in the testing. Preliminary test results and conclusions are also presented.

DOI:

10.14359/6780


Document: 

SP73-09

Date: 

March 1, 1982

Author(s):

Larsgunnar Nilsson and Sven Sahlin

Publication:

Symposium Papers

Volume:

73

Abstract:

An experimental and finite element analysis of the impact of a stel rod on a reinforced concrete slabl has been conduted. The object was to study the correlation between experimental and theoretical results. It was found that detailed information of nonlinear wave propagationm concrete crushing and cracking, and yielding of reinforcment steel could be obtained from the finite elem,ent analysis. A good coorelation between experimental and theoretical results was achieved. The development of different failure mechanisms can clearly be followed in the theoretical results. Such information should be very valuable in connection with the formulation of simple design formulas.

DOI:

10.14359/6779


Document: 

SP73-08

Date: 

March 1, 1982

Author(s):

Alan J. Watson and John E. lnkester

Publication:

Symposium Papers

Volume:

73

Abstract:

The paper describes the behavior of a 1/8th scale model reinforced concrete beam to column joint under an impact load applied to the beam. The load is produced by a 1.68kg steel rod fired from an air gun with an impact velocity of either 8.9 m/s or 13.4 m/s. The column reactions were measured by foil electrical resistance strain gauges on 3 load cells. Similar strain gages gave the incident and reflected stress pulse from which the impact load on the beam has been obtained. The deflections of the beam during the impact were recorded using moving coil linear displacement transducers. The measured behaviour of the joint under impact load has been compared with that of identical specimens under static load and with calculated values.

DOI:

10.14359/6778


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