Long-Term Overturning Loads on Drilled Shaft Footings

Dunlap, Wayne A.; Ivey, Don L.; Smith, Harry L.

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Long-Term Overturning Loads on Drilled Shaft Footings

1970-09-01
By Dunlap, Wayne A. ; Ivey, Don L. ; Smith, Harry L.

File Language:

English

Details

Creators:

Dunlap, Wayne A. ; Ivey, Don L. ; Smith, Harry L.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration. Bureau of Public Roads
Subject/TRT Terms:
Publication/ Report Number:

105-5F
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

A theory which will predict the ultimate resistance of a drilled shaft footing to overturning loads was presented in Research Report 105-1 and was correlated with model tests reported in Research Report 105-2. The results of full-scale tests on drilled shaft footings were presented and compared to a "Tentative Design Procedure" in Research Report 105-3. In the research presented herein, long-term constant loads were applied to model and full-scale footings placed in soils which ranged from soft clay to sands. The purpose was to determine if the application of sustained overturning loads might cause excessive time-dependent footing movement. The results of these tests are presented in graphs of footing rotation as a function of time and are compared to results obtained from creep tests on triaxial specimens. The long-term loads are compared to the "pull-over" static loads which were reported previously, in Research Report 105-3. Suggestions are made regarding design soil strengths for use in limiting footing movement resulting from sustained overturning loads.
Format:

PDF
Funding:

2-5-67-105
Download URL:

https://rosap.ntl.bts.gov/view/dot/84537/dot_84537_DS1.pdf
File Type:

[PDF - 1.26 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:e102df38225019ad2573a495b3aa490c919357373cc8e19f3a0e86ffe58e301ce48f0636fe1b1a81afda9e17b8ada50f6512f5620983760e8653798f767f31f5

Dynamic Overturning Loads on Drilled Shaft Footings Used for Minor Service Structures

Ten model tests of drilled shaft footings subjected to dynamic overturning loads were performed. Compared to the average size footing used for minor s ...

Smith, Harry L. ;

Dunlap, Wayne A.
Resistance of a Drilled Shaft Footing to Overturning Loads, Model Tests and Correlation with Theory

Reported in this paper are the results of twenty-eight model tests of drilled shaft footings subjected to overturning horizontal loads. The models are ...

Ivey, Don L. ;

Koch, Kenneth J.
Theory, Resistance of a Drilled Shaft Footing to Overturning Loads

This is the first of a series of reports to be written concerned with the design of these footings. It shows in detail the theoretical development on ...

Ivey, Don L.

File Language:

English

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