摘要:

AbstractA transfer matrix method is applied for the analysis of non‐linear pile group responses. The expression for the transfer matrix is obtained by idealizing the non‐linear pile group as a group of piles attached to a piecewise linear “Winkler model for a pile group”. This Winkler idealization is essential to apply a transfer matrix method for the pile group response analysis. The parameters of this Winkler model can be defined from unit load transfer curves obtained for a single pile. In the limited studies carried out, it is found that the present approach predicts the response of pile groups reasonab

ISSN:0363-9061    

DOI:10.1002/nag.1610090402

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractTwo constitutive models for the simulation of fracture and fragmentation processes in rapidly loaded rocks are studied. The models were included in a wave propagation finite element code. The results obtained from the two models were compared by a study of the intensity and extent of fracturing obtained from two different configurations of explosive charge and reflecting surfaces in a plane strain problem. The evolution of the time dependent fracture pattern and fragmentation process is also presented.

ISSN:0363-9061    

DOI:10.1002/nag.1610090403

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractIn this paper the settlement of a rigid foundation supported by a layer of clay which has been stabilized with stone columns is considered. The results of an analytic solution for the settlement, assuming no yield occurs in the clay or columns, have been presented in a previous publication. This solution is now used to develop an interaction analysis which takes account of yielding within the stone columns.This interaction analysis is based on a number of plausible assumptions regarding the behaviour of the clay and columns. In order to check the validity of these assumptions elasto‐plastic finite element analyses have been performed and the agreement between the two methods is very good. However, the computational effort required for the finite element analyses is many orders of magnitude greater than that for the interaction analysis.This analysis has been used to generate a number of parametric solutions which provide a basis for estimating the reduction in settlement of the foundation due to the stabilization of the cla

ISSN:0363-9061    

DOI:10.1002/nag.1610090404

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractIn the first part of this paper solutions are developed for the response of a non‐homogeneous half‐space subjected to either a surface point load or a surface line load. The non‐homogeneity considered is a variation in Young's modulus (E) with depth (z) which takes the formE=mEZαwheremEis a constant and α is referred to as the non‐homogeneity parameter.The variation of these solutions as the non‐homogeneity parameter α varies between the limits of zero (homogeneous soil) to unity (Gibson soil) gives some fresh insight into both these li

ISSN:0363-9061    

DOI:10.1002/nag.1610090405

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractSolutions developed in the first part of this paper (i.e. describing the response of a non‐homogeneous half‐space subjected to surface point and line loads) are used in this part to obtain solutions for a variety of surface loadings. Consideration is given to a distributed load acting over a circular area or strip and a rigid disk or strip subjected to applied normal load and moment.It is established that the profiles of surface settlement due to uniformly distributed loads acting over a strip or circular area are strongly dependent on the degree of non‐homogeneity. This dependency is reduced when the footing is rigid. When α = 1 the moduli variation is identical to the Gibson soil and the equivalence with the Winkler soil model is estab

ISSN:0363-9061    

DOI:10.1002/nag.1610090406

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractThe finite element approach has been used to derive element matrices suitable for the analysis of the dynamic behaviour of piles. Using this method, piles with arbitrary cross‐section and soil with nonhomogeneous properties can be dealt wit

ISSN:0363-9061    

DOI:10.1002/nag.1610090407

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

摘要:

AbstractThe finite element formulation for deriving the soil stiffness matrix by idealizing the foundation as an elastic half space is presented. The procedure for condensation of the soil stiffness matrix taking symmetry into consideration is discussed. Computation time is considerable reduced when a condensed soil stiffness matrix is used for the finite element analysis of rafts resting on an elastic half space.

ISSN:0363-9061    

DOI:10.1002/nag.1610090408

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610090409

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610090401

出版商:John Wiley&Sons, Ltd    

年代:1985

数据来源: WILEY