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Point Load Tests on Double Tee Flanges
[摘要]

Presents the results of nine full-scale load tests on double tees with 4 in. (102 mm) thick cantilevered flanges. In five of the tests, the concentrated loads were applied at locations away from the corners.  In the remaining four tests, the concentrated load was close or very close to the unsupported corners. Tests were terminated either when the first crack appeared or at a later stage. Full failure, however,  was not  pursued because of test setup limitations or because of safety concerns. The results are, therefore, lower (conservative) bounds to the actual capacity. Comparison with predictions based on  elastic and yield line theories are also made. Based on the given reinforcement and layout, lower bounds of 4.2 kips (18.7 kN) for the corner failure and 9.5 kips (42 kN) for failure away from the corners have been  obtained. It is concluded that code mandated point loads of 2.0 kips (8.9 kN) can be safely carried by these flanges.

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[效力级别]  [学科分类] 建筑学
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