Effects of cyclic lateral loads on piles in sand
- Univ. of Illinois, Urbana, IL (United States). Dept. of Civil Engineering
The effect of repetitive lateral loads on deflections of two drilled piers in Tampa Bay were significantly greater than predicted by a p-y procedure commonly used in practice. Reasons for the discrepancy between predicted and measured deflections are discussed. Two methods for predicting the effect of repetitive lateral loads are developed using results of 34 cyclic lateral load tests to quantify model parameters important to the behavior of piles subjected to repetitive lateral loading. The two methods model cyclic lateral load behavior of a pile by degrading soil resistance as a function of number of cycles of load, method of pile installation, soil density, and character of cyclic load. The two methods differ in the computational effort required to make the prediction. The first method is most suitable for hand calculation and rule-of-thumb estimation and is based upon a beam-on-an-elastic foundation model with a soil reaction modulus, K{sub h}, increasing proportionally with depth. The second method modifies nonlinear static p-y curves to derive a cyclic p-y curve. The two methods provides a simple means for estimating effects of cyclic lateral load.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 143802
- Journal Information:
- Journal of Geotechnical Engineering, Journal Name: Journal of Geotechnical Engineering Journal Issue: 1 Vol. 120; ISSN 0733-9410; ISSN JGENDZ
- Country of Publication:
- United States
- Language:
- English
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