Embedment

About: Embedment is a research topic. Over the lifetime, 2441 publications have been published within this topic receiving 31444 citations.

Formulas and charts for impedances of surface and embedded foundations

Abstract: A complete set of algebraic formulas and dimensionless charts is presented for readily computing the dynamic stiffnesses (\IK\N) and damping coefficients (\IC\N) of foundations harmonically oscillating on/in a homogeneous half-space. All possible modes of vibration, a realistic range of Poisson’s ratios, and a practically sufficient range of oscillation frequencies are considered. The foundations have a rigid basemat of any realistic solid geometric shape. The embedded foundations are prismatic, having a sidewall-soil contact surface of height \Id\N, which may be only a fraction of the embedment depth \ID\N. Two numerical examples illustrate the use of the formulas and charts and elucidate the role of foundation shape and degree of embedment on radiation damping for various modes of vibration. A companion paper (Gazetas and Stokoe 1991) presents supporting experimental evidence from model tests. The two papers aim at encouraging the practicing engineer to make use of results obtained with state-of-the-art formulations, when studying the dynamic response of foundations.

Fundamental Analysis of Aggregate Interlock

Abstract: A model for aggregate interlock has been developed based on the behavior of micro scale. The relation between displacements and stresses across the crack faces are defined to be a function of deformation and sliding at particle level. This relation is derived for one particle projecting from one of the crack faces with an arbitrary diameter and an arbitrary embedment depth. The most probable distribution of aggregate particles, crossed by the plane of cracking and their positions with regard to this plane are assessed by a statistical analysis. The general relations between stresses and displacements for a unit crack area are obtained by integrating all particle contributions. The model proves to give adequate results, compared with experiments, carried out on several types of (cracked) concrete. Using this model, further analysis of the mechanism of aggregate interlock has been carried out, explaining tendencies observed in tests of other investigators.

The behaviour of anchor plates in sand

Abstract: This Paper describes a theoretical investigation into the behaviour of anchor plates in sand. Consideration is given to the effects of anchor embedment, friction angle, dilatancy, initial stress st...

Uplift of Anchor Plates in Sand

Abstract: An investigation into the vertical uplift of anchor plates in a cohesionless medium is described. Factors investigated in relation to the loaddisplacement response were the size and shape of plate,...

Investigation of bond in concrete structures strengthened with near surface mounted carbon fiber reinforced polymer strips

Abstract: Fiber reinforced polymer (FRP) materials are currently produced in different configurations and are widely used for the strengthening and retrofitting of concrete structures and bridges. Recently, considerable research has been directed to characterize the use of FRP bars and strips as near surface mounted reinforcement, primarily for strengthening applications. Nevertheless, in-depth understanding of the bond mechanism is still a challenging issue. This paper presents both experimental and analytical investigations undertaken to evaluate bond characteristics of near surface mounted carbon FRP (CFRP) strips. A total of nine concrete beams, strengthened with near surface mounted CFRP strips were constructed and tested under monotonic static loading. Different embedment lengths were used to evaluate the development length needed for effective use of near surface mounted CFRP strips. A closed-form analytical solution is proposed to predict the interfacial shear stresses. The model is validated by comparing t...