Dynamic Behavior of an Embedded Foundation under Horizontal Vibration in a Poroelastic Half-Space

Abstract

More and more huge embedded foundations are used in large-span bridges, such as caisson foundations and anchorage open caisson foundations. Most of the embedded foundations are undergoing horizontal vibration forces, that is, wind and wave forces or other types of dynamic forces. The embedded foundations are regarded as rigid due to its high stiffness and small deformation during the forcing process. The performance of a rigid, massive, cylindrical foundation embedded in a poroelastic half-space is investigated by an analytical method developed in this paper. The mixed boundary problem is solved by reducing the dual integral equations to a pair of Fredholm integral equations of the second kind. The numerical results are compared with existing solutions in order to assess the accuracy of the presented method. To further demonstrate the applicability of this method, parametric studies are performed to evaluate the dynamic response of the embedded foundation under horizontal vibration. The horizontal dynamic impedance and response factor of the embedded foundation are examined based on different embedment ratio, foundation mass ratio, relative stiffness, and poroelastic material properties versus nondimensional frequency. The results of this study can be adapted to investigate the horizontal vibration responses of a foundation embedded in poroelastic half-space.

Prediction of Reinforcement Connection Loads in Geosynthetic Reinforced Segmental Retaining Walls Using Response Surface Method

“…With the expanding scale of urbanization, a large amount of engineering infrastructures, such as buildings, bridges, and highways, are constructed in mountains and along rivers [1][2][3][4][5]. Geosynthetic reinforced segmental retaining walls have been widely used as bridge abutments, slope supporting structures, high fill subgrades, and bank revetments as a result of their low cost, aesthetics, and tolerance to the foundation.…”

Settlement analysis of the giant open caisson during the construction of the Changtai Yangtze River Bridge

“…Moreover, for offshore caisson foundations, the bearing capacity under combined V-H-M (vertical-horizontal-moment) loads was studied in clay (Zhang et al, 2011;Hung and Kim, 2014;Fu et al, 2018;Skau et al, 2018), sand (Cheng and Cassidy, 2016;Park et al, 2016;Jin et al, 2019), in sand over clay (Qiu and Henke, 2011;Park and Park, 2017;Zou et al, 2018), and in stiff over soft clay (Xia, et al, 2021). Some studies have also investigated the dynamic response of large embedded foundations (caisson foundations and anchorage open caissons) under horizontal and vertical vibrations (Apsel and Luco, 1987;Latini and Zania, 2017;Chen et al, 2007;Senjuntichai et al, 2006;Bilotta et al, 2015;Chen et al, 2019). To date, few studies have investigated the settlement deformation of caisson foundations after sinking to the desired depth during the installation of bridge superstructures (Chuanbao, 2021).…”

Soil Densification Effect on The Seismic Response of Structures Taking into Consideration Soil-Structure Interaction

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