摘要:

AbstractIn the idealised modelling of ground distortion induced by a freely deposited heap of granular material, consideration is given to a fundamental problem in classical elasticity whereby an axisymmetric distribution of vertical conical loading is applied to the surface of a half‐space. Closed‐form expressions are derived for the deformed shape of the surface, and three variations of the integral transform method are described for determining stresses and displacements within the half‐space. Extensive numerical results are presented in graphical

ISSN:0363-9061    

DOI:10.1002/nag.1610151102

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThis paper presents a finite layer method for the analysis of laterally loaded piles in isotropic and cross‐anisotropic layered soils. Excellent agreement is found between the isotropic solutions computed by the finite layer method and the more rigorous finite element method. Some theoretical solutions are presented to demonstrate the effect of soil anisotropy. Two full scale field case histories have been analysed by the method using isotropic and cross‐anisotropic soil mod

ISSN:0363-9061    

DOI:10.1002/nag.1610151103

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThis note discusses the inconsistencies that are inherent in the postulate of three plane strain mechanisms. It is shown that this postulate violates the principle of invariance and one obtains different results depending on the choice of the reference axes. If formulated in the principal stress space, this postulate requires that the principal stress and principal plastic strain increment directions be coaxial. Constitutive models based on this postulate cannot be used for general loading situations involving principal stress rotation where significant non‐coaxiality is obtaine

ISSN:0363-9061    

DOI:10.1002/nag.1610151104

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThe uncertain settlement response of pile groups is determined using a ‘hybrid’ formulation and a first‐order perturbation technique. The spatially varying soil modulus, which gives rise to the uncertainties in the pile group settlement, is modeled as a homogeneous random field. The random field is assumed to be one‐dimensional since the ‘hybrid’ formulation does not account for horizontal variation in the soil properties. Using the proposed method, the coefficient of variation of the pile group settlement is computed. The single‐pile solutions obtained compare favorably with the solutions from a conventional stochastic finite element analysis. Pile groups of sizes ranging from two to twenty‐five piles are studied. It is observed that the coefficient of variation is not significantly affected by the pile spacing as well as the group size. By defining an appropriate performance function, the reliability index of a pile group system is also found to be approximately the same as that of a single‐pile system. These observations suggest that the solutions for a single pile may be used to estimate the uncertainties in the settlement respon

ISSN:0363-9061    

DOI:10.1002/nag.1610151105

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610151106

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610151101

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY