Determination of the Constant Modulus of Horizontal Subgrade Reaction of Saturated of Sand Pile Based on <i>p</i>-<i>y</i> Curve

LOU Xiaoming; WU Hao; GU Guoqing

doi:10.3724/j.gyjzG24011008

Volume 56 Issue 4

Apr. 2026

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LOU Xiaoming, WU Hao, GU Guoqing. Determination of the Constant Modulus of Horizontal Subgrade Reaction of Saturated of Sand Pile Based on p-y Curve[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 159-165. doi: 10.3724/j.gyjzG24011008

Citation:

LOU Xiaoming, WU Hao, GU Guoqing. Determination of the Constant Modulus of Horizontal Subgrade Reaction of Saturated of Sand Pile Based on p-y Curve[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 159-165. doi: 10.3724/j.gyjzG24011008

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Determination of the Constant Modulus of Horizontal Subgrade Reaction of Saturated of Sand Pile Based on p-y Curve

doi: 10.3724/j.gyjzG24011008

1. Shanghai Geoharbour Construction Group Co., Ltd., Shanghai 200434, China;
2. Shanghai Yangpu Pulic Facilities Development Co., Ltd., Shanghai 200093, China;
3. China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China

Received Date: 2024-01-10
Available Online: 2026-06-06
Publish Date: 2026-04-20

Abstract

Abstract

The p-y curve for laterally loaded piles in saturated sand is related to the internal friction angle φ. However， the coefficient m used in the m-method is selected from empirical ranges in code tables and is not linked to φ. Under the condition of the same allowable pile-head displacement， the horizontal load H₀ calculated by p-y curve method can be substituted into the m-method model to determine the corresponding m value. Based on extensive numerical calculations， relations were established among the internal friction angle φ， pile diameter， allowable pile-head displacement， and the coefficient m for saturated sand. These results were presented as formulas and tables to allow for convenient lookup. It was found that the stiffness of the pile shaft had a negligible influence on these relations. In three practical cases， the allowable lateral bearing capacities computed with the m values from this method showed good agreement with the measured results.
- saturated sand,
- internal friction angle,
- foundation proportional coefficient m,
- p-y curve,
- laterally loaded pile

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References(18)

References

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