Underpinning a 3000-Ton Structure with High-Capacity Mini-Piles

Davie, J. R.; Senapathy, H.

doi:10.1061/40601(256)46

Cited by 5 publications

(4 citation statements)

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“…Because of these important advantages, micropiles have been widely used in situations where minimal disturbance of existing structures is a requirement, such as in seismic retrofitting and in the rehabilitation of foundations of structures that are very sensitive (Taylor et al 1998;Zelenko et el. 1998;Davie and Senapathy 2002;Macklin et al 2004;Stulgis et al 2004), as well as in locations with low headroom and severely restricted access conditions (Scherer et al 1996). Micropiles have also been increasingly used, not only as foundation underpinning elements but also as foundations of new structures.…”

Section: Methodsmentioning

confidence: 99%

Use of Micropiles for Foundations of Transportation Structures Final Report

Seo¹,

Prezzi²

2008

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Section: Methodsmentioning

confidence: 99%

Use of Micropiles for Foundations of Transportation Structures Final Report

Seo¹,

Prezzi²

2008

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“…Based on scale model test and cases, underground underpinning technology had made progress in Japan [2][3][4]. Meanwhile, some underpinning methods based on the underground construction were widely adopted in many countries [5][6][7][8][9][10]. Recently, underpinning technology had achieved rapid development in China [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Stability Analysis of a Structure during Excavation beneath This Structure

Miao

Bao-xian

Liu

et al. 2020

Advances in Civil Engineering

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In order to create more underground space, it was important to investigate the impact of excavation on the preexisting building. In this paper, a scale model test was conducted to analyze the stability of the structure during excavation. The model consisted of underpinning piles preinstalled in clay, with a reinforced concrete building placed on underpinning piles. The strain and settlement of the structure were observed to reveal the time settlement of columns and the time strain of beams, columns, and piles during excavation. The results showed that the strain change of beams was small, and strain values of columns were getting higher. And underpinning piles had great strain variations. They were of great significance to underpinning design and engineering practice.

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“…Pile underpinning technology can not only effectively protect existing buildings but also solve the problems of urban transportation and underground space construction [1][2][3][4][5][6]. In the process of strengthening the early Winchester Cathedral, the submersible workers used the underwater digging technology to reach the gravel layer after crossing peat and silt and then filled it with concrete to carry out the underpinning construction [7].…”

Section: Introductionmentioning

confidence: 99%

“…where f c represents the axial compressive strength of concrete. When the softening coe cient is less than 0.5, the softening coe cient is 0.5. e shear capacity of the three specimens under the theoretical formula is obtained by substituting the experimental values into Equation (2). e theoretical values and the experimental values are compared and analyzed.…”

mentioning

confidence: 99%

Experimental and Application Study on Underpinning Engineering of Bridge Pile Foundation

Liu

Wang

Chen

et al. 2018

Advances in Civil Engineering

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In order to study the theory and application of the pile foundation underpinning technology, 3 local node models of underpinning structures with a similarity ratio of 1/1 were made and the progressive repeated static loading tests were conducted. The shear and antislip properties of the joint are studied, and the improved formula for calculating the shear capacity is proposed. The results show that a planting bar plays a major role in shear resistance, and the hoop rate can improve the shear capacity of the interface. The new formula for calculating the shear-bearing capacity is proposed, and the calculation results of the formula of shear-bearing capacity are in good agreement with the experiment results. It is completely feasible to use this formula to calculate the shear-bearing capacity of the pile foundation underpinning structure. During the test, the bearing capacity of the model is good, which proves the reliability of the underpinning technology is good, and it can provide experimental and theoretical basis for the underpinning of similar projects.

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Underpinning a 3000-Ton Structure with High-Capacity Mini-Piles

Cited by 5 publications

References 0 publications

Use of Micropiles for Foundations of Transportation Structures Final Report

Use of Micropiles for Foundations of Transportation Structures Final Report

Experimental Study on Stability Analysis of a Structure during Excavation beneath This Structure

Experimental and Application Study on Underpinning Engineering of Bridge Pile Foundation

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