Centrifuge model test study on micro-pile reinforcement of shallow foundation

Li, Zixi; Zhang, Ga

doi:10.1016/j.sandf.2023.101320

Cited by 2 publications

(3 citation statements)

References 27 publications

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“…1). The combination of a micropile with a slab as a shallow foundation provides a higher bearing capacity than a slab without a micropile or just a pile foundation [19].…”

Section: Research Significancementioning

confidence: 99%

The Bearing Capacity of Peat Soil With Bamboo Reinforcement

Waruwu

2024

GEOMATE

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Peat soil is a type of soil that has low bearing capacity and high settlement, which has an unfavorable effect on construction. Peat soils require a reinforcement system of micropile-reinforced slabs. One alternative material that can be used as a micropile is bamboo. This study aims to determine the impact of bamboo micropiles on increasing bearing capacity, modulus of subgrade reaction, and reducing settlement. This research was conducted by testing a physical model on peat soil reinforced with bamboo micropiles and concrete micropiles as a comparison. The lengths of the piles used were 10 cm, 20 cm, 30 cm, and 40 cm, respectively, which were installed on a 30 cm x 30 cm slab. The plate load test is conducted on the slab to obtain the bearing capacity. The results showed that micropiles could increase bearing capacity and reduce settlement. The bearing capacity of slabs with bamboo micropiles was close to that of concrete micropiles, or about 0.92 times the bearing capacity of concrete micropiles. The primary difference between the two materials was the rougher surface of the concrete micropile, which provided higher shaft friction than the bamboo micropile. The subgrade reaction's initial and secant moduli were 170 and 50 times the bearing capacity, respectively. Settlement reduction due to pile installation was relatively high at the initial loading and constant at higher loads.

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“…1). The combination of a micropile with a slab as a shallow foundation provides a higher bearing capacity than a slab without a micropile or just a pile foundation [19].…”

Section: Research Significancementioning

confidence: 99%

The Bearing Capacity of Peat Soil With Bamboo Reinforcement

Waruwu

2024

GEOMATE

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“…Micropiles generally refer to engineering piles with a pile diameter of 70-300 mm and a length to slenderness ratio greater than 30, and these values may significantly reduce the settlement of shallow foundations [1]. Micropiles have been widely used in slope reinforcement and foundation reinforcement projects for many years due to favorable characteristics such as convenient and economical construction, suitability for narrow working areas, and negligible impact on the original building.…”

Section: Introductionmentioning

confidence: 99%

“…Lv et al (2015) analyzed the load-transfer mechanisms of various micropiles [10]. A centrifugal model test study showed that the reinforcement of micropiles may be attributed to the lateral deformation of soil caused by the limitation of loading by the micropiles [11]. Based on the reinforcement mechanism of the micropiles, a new type of segmented micropile structure was proposed.…”

Section: Introductionmentioning

confidence: 99%

Study on new micro-pile structure for reinforcement of shallow foundation

ma,

Li,

Zhang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Micropiles are widely adopted for reinforcing shallow foundations. A new type of topping micropile structure was proposed in this study. A certain length of the expansion section was added to the upper part of the micropile, which not only retained the cylindrical section of the micropile but also enhanced the limiting effect on the lateral displacement of the soil near the shallow foundation. A comparative centrifugal model test of the new micropile and an ordinary micropile was conducted by applying a vertical load on the foundation. Under the test conditions in this study, the bearing capacity of the new micropile reinforcement foundation increased by approximately 50% compared to that of an ordinary micropile.The new miniature piles significantly reduced the settlement of the foundation. The reinforcement effect of the new micropiles on a shallow foundation was more pronounced than that of an ordinary pile given that the new micropiles possessed numerous limitations on the lateral deformation of the soil base under the shallow foundation.

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Centrifuge model test study on micro-pile reinforcement of shallow foundation

Cited by 2 publications

References 27 publications

The Bearing Capacity of Peat Soil With Bamboo Reinforcement

The Bearing Capacity of Peat Soil With Bamboo Reinforcement

Study on new micro-pile structure for reinforcement of shallow foundation

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