In situ rapid load testing of concrete structures

Author

Matthew Alan Mettemeyer

Abstract

"In a rapid load test, loads applied to strategic locations are meant to induce the internal forces equivalent to those resulting from distributed loads. The engineer has to be able to analytically interpret this equivalency when establishing the load level to be applied during the in situ test. This implies an understanding of boundary conditions (i.e., fixity), collaboration of adjoining members (i.e., load sharing), and composite action with structural and non-structural components. A rapid load test consists of concentrated loads being applied in a quasi-static manner in at least six load cycles, with each cycle containing several load steps. The initial cycles achieve relatively low levels of load and are used to verify assumptions made in the preliminary analysis and ensure stability of the system.

The key feature of a rapid load test conducted with hydraulic jacks is in the ability to progressively expose a structural member to loading-unloading cycles. This allows the engineer the opportunity to maintain a strict control on safety and, at the same time, determine response parameters that are key to structural assessment, namely: linearity of behavior, repeatability of response, and permanency of deformation.

The duration of a rapid load test can be significantly shorter than the 24-hour period that has been employed with traditional in situ tests. The cyclic nature of the rapid load test is considered a suitable substitute for the 24-hour sustained load. In any event, a rapid load test can last as deemed necessary by the engineer"--Abstract, page iii.

Advisor(s)

Nanni, Antonio

Committee Member(s)

Belarbi, Abdeldjelil
Chandrashekhara, K.

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 1999

Pagination

xiv, 113 pages

Note about bibliography

Includes bibliographical references (pages 109-112).

Rights

© 1999 Matthew Alan Mettemeyer, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Materials -- Dynamic testing
Reinforced concrete -- Testing
Reinforced concrete construction

Thesis Number

T 7688

Print OCLC #

43628141

Electronic OCLC #

905226335

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Recommended Citation

Mettemeyer, Matthew Alan, "In situ rapid load testing of concrete structures" (1999). Masters Theses. 1883.
https://scholarsmine.mst.edu/masters_theses/1883