New Technology on Seismic Reinforcement of Pile Foundation for Long Life Bridges

Tomisawa, Koichi; Kimura, Makoto

doi:10.1016/j.proeng.2017.01.443

Cited by 4 publications

(2 citation statements)

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“…Soil shear can give through foundations only for buildings. The three types of deep foundations one can come across are Pier foundation [4], Pile foundation [5] and Well foundation [6]. But these all are failed when rising high rise buildings.…”

Section: Soil Shearing Strengthmentioning

confidence: 99%

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure

Maiti¹,

Ajayswarup²

2019

OJER

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Structural buildings are subjected to huge cyclic powers during earthquakes. The structural failures during seismic events notably impact a variety of facets of buildings within tolerable levels like sustainable strength and stable energy dissipation capability to sustain inter-story drifts and overall structural damages. The major structural elements such as columns, beams and soil shearing capacities are majorly affected during seismic events. Buildings situated in the earthquake prone zone are exposed to most concerns in the structural design. Boreholes are also one of the main factors responsible for seismic waves and soil shearing. Shear strength is a term used in soil mechanics to describe the magnitude of the shear stress that soil can sustain, especially selected BC soil. The shear resistance of soil is a result of friction and interlocking of particles, and possibly cementation or bonding at particle contacts. Soils consist of individual particles that can slide and roll relative to one another. Shear strength of a soil is equal to the maximum value of shear stress that can be mobilized within a soil mass without failure taking place. In many parts of the world to avoid or control these consequences, buildings have been constructed as steel-composite structures. However, in India, buildings are being constructed as RCC framed structures. Here a novel combination of VANE shear footing and BRB method has been introduced. In this article, the effects of boreholes increase seismic bearing capacity of foundation, and load bearing capacity to balance seismic pressure.

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Section: Soil Shearing Strengthmentioning

confidence: 99%

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure

Maiti¹,

Ajayswarup²

2019

OJER

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“…In addition, Ya et al [33] found that the dynamic response of a pile-cap structure under random sea wave action is the largest. Tomisawa and Kimura [34] proposed new techniques to improve seismic performance of the pile foundation for long life bridges. e seismic excitation on the pile foundation was also considered in some studies [35,36].…”

Section: Introductionmentioning

confidence: 99%

Improvement on Structural Forms of Pile Group Foundations of Deepwater Bridges

Ren

Tang

et al. 2019

Shock and Vibration

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As long-span cross-sea bridges extend to deeper sea areas, the bridge pile tends to increase in its slenderness ratio and becomes more susceptible to waves. To improve the structural stability at the construction stage, this study analyses wave-induced response of foundations. The wave theory and the method used for computing wave forces on foundations are first introduced. Then, a pile group foundation is taken as the research object, and different pile lengths ranging from 16 m to 46 m are considered. The wave-induced response of the piles and the cap is calculated. After understanding the effect of the pile length, three optimized foundations are proposed with the aim of reducing the free length of the pile, and the corresponding finite element models are established to compare their wave-induced response. The results show that the displacement at the top of the foundation increases with the increase in the pile length until the cap partly emerges from water and so does the internal force at the bottom. Setting a constraint in the middle of the piles can reduce their free lengths and is favourable to the wave-induced response of the foundation except for the shearing force. A stronger constraint shows better effects on improvement of the stability of the foundation. The conclusions provide reference for optimization on pile foundations of deepwater bridges.

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Seismic performance of group pile foundation with ground improvement during liquefaction

Sawamura

Inagami

Nishihara³

et al. 2021

Soils and Foundations

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New Technology on Seismic Reinforcement of Pile Foundation for Long Life Bridges

Cited by 4 publications

References 0 publications

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure

Improvement on Structural Forms of Pile Group Foundations of Deepwater Bridges

Seismic performance of group pile foundation with ground improvement during liquefaction

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New Technology on Seismic Reinforcement of Pile Foundation for Long Life Bridges

Cited by 4 publications

References 0 publications

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations &amp; Seismic Pressure

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations &amp; Seismic Pressure

Improvement on Structural Forms of Pile Group Foundations of Deepwater Bridges

Seismic performance of group pile foundation with ground improvement during liquefaction

Contact Info

Product

Resources

About

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure

Vane Shear Footing-Integrated Rational Approach for Seismic Bearing Capacity of Foundations & Seismic Pressure