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Problems such as the inclination and settlement of buildings after construction completion have been reported in recent years. Quality control during construction and mieruka ('visualizing the work quality) are increasingly demanded. In light of this, the present study addresses execution with a 'rotary penetration steel pipe pile (RPS-pile), which is a system that is able to collect information in real time during the piling process. When an RPS- pile is placed, high push-in and pull-out bearing capacities are expected because the spiral blade at the pile tip resists at the bottom of the borehole against an external force. Additionally, continuous real-time data on the pile-head torque and the auger penetration depth per revolution are obtained, as these mechanical indicators are necessary for piling. This study aims at developing a method for the real-time confirmation of work quality at construction sites by utilizing construction information (information obtained during piling). Specifically, a method is proposed for the sequential updating of reliability in the estimation of the side friction acting on a drilled pile. In this method, real-time information on the pile-head torque and the auger penetration depth per revolution obtained during piling are used in addition to N-values that are observed in a standard penetration test conducted in advance as part of subsurface exploration. Key words: construction quality control, bearing capacity, Bayesian theorem, multi-variate normal distribution. Des problemes tels que l'inclinaison et le tassement des batiments apres l'achevement de la construction ont ete signales ces dernieres annees. Le controle de la qualite pendant la construction et la mieruka (<< visualization >> de la qualite du travail) sont de plus en plus demandes. Dans cette optique, la presente etude porte sur l'execution avec un << pieu tubulaire en acier penetration rotative (pieu RPS) >>, qui est un systeme capable de collecter des informations en temps reel pendant le processus d'empilage. Lorsqu'un pieu RPS est place, on s'attend des capacites d'appui elevees en poussee et en traction car la lame en spirale la pointe du pieu resiste au fond du trou de forage contre une force exterieure. De plus, des donnees continues en temps reel sur le couple de la tete de pieu et la profondeur de penetration de la tariere par tour sont obtenues, car ces indicateurs mecaniques sont necessaires pour le pieutage. Cette etude vise developper une methode pour la confirmation en temps reel de la qualite du travail sur les sites de construction en utilisant les informations de construction (informations obtenues lors de l'empilage). Plus precisement, une methode est proposee pour la mise jour sequentielle de la fiabilite de l'estimation du frottement lateral agissant sur un pieu fore. Dans cette methode, des informations en temps reel sur le couple de la tete de pieu et la profondeur de penetration de la tariere par tour obtenue lors du battage sont utilisees en plus des valeurs N qui sont observees dans un test de penetration standard effectue au prealable dans le cadre de l'exploration du sous-sol. [Traduit par la Redaction] Mots-cles : controle de la qualite de la construction, capacite de charge, theoreme de Bayes, distribution normale multivariee., 1. Introduction 1.1. Background of the study Because substantial inclination and settlement of buildings after the completion of construction has been reported in recent years, the importance of quality control [...]

In recent years, improvements to the design of earth structures to ensure soil robustness against accidental disaster load conditions has gained considerable importance. In this paper, we propose a practical reliability analysis scheme that can enable the development of a robust design based on dimensionality reduction; this scheme employs input parameters, and it uses numerical analysis results as multidimensional information while preserving the spatiotemporal information to the maximum extent. Further, the proposed design scheme has practical design functions similar to those of conventional reliability analysis methods, such as the first-order second-moment method and first-order reliability method. Finally, the effectiveness of the proposed design scheme and its significant contribution to the practical design of earth structures are demonstrated via a time series seismic deformation analysis of simple embankments on liquefiable sand ground. [ABSTRACT FROM AUTHOR]