Experimental Evaluation of Subgrade Modulus and Its Application in Model Slab Studies

Siddiqi, Qaiser S.; Hudson, W. Ronald

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Experimental Evaluation of Subgrade Modulus and Its Application in Model Slab Studies

1970-04-01
By Siddiqi, Qaiser S. ; Hudson, W. Ronald

File Language:

English

Details

Creators:

Siddiqi, Qaiser S. ; Hudson, W. Ronald
Corporate Creators:

University of Texas at Austin. Center for Highway Research
Corporate Contributors:

Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Clay Clay (Taylor Marl) Coefficient Of Subgrade Reaction Cyclic Tests Deflection Discrete Element Method Evaluation Experiments Modulus Modulus Of Subgrade Reaction K Plate Bearing Test Plate Load Tests Slabs Small-dimension Slab Static And Cyclic Load Tests Static Loads Static Tests Stresses Subgrade Materials Temperature
Publication/ Report Number:

56-16 ; 3-5-63-56
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Corporate Publisher:

University of Texas at Austin. Center for Highway Research
Abstract:

In this report available theories of subgrade reaction are briefly reviewed, and a testing program is developed to evaluate the value of soil support K from small plate load tests used in the discrete-element solution of small-dimension slab-on-foundation problems. The results confirm that the k-value of soil depends not only upon the diameter of the plate, but also on the amount of soil deformation. A small dimension slab was tested on a thin asphalt-stabilized layer under a center load up to 200 pounds. Deflections and stresses were measured for each solution based on the k-value determined from plate load tests on the layered system. The agreement between the two solutions is within 5 percent in the interior of the slab near the point of load application. The effect of cyclic loading to a constant deflection produced some permanent deformation in the layered foundation. By the tenth cycle the applied load appeared to start stabilizing.
Format:

PDF
Funding:

4613-1007
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:1adbf3bf9a356ec063aebbdaea0d564e2d3f2cf50875889326dac2cca8d37739c8a8f141b72ac3205f389f457f97aba23f67b49357cb156091d25b9c3f5e36ec
Download URL:

https://rosap.ntl.bts.gov/view/dot/80923/dot_80923_DS1.pdf
File Type:

[PDF - 3.85 MB ]

File Language:

English

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