...Gang Zheng; Chuhan Deng; Stuart K. Haigh A novel retaining system consisting of vertical and inclined piles (VIPs) is increasingly used in China to support large-area excavations in clay, simultaneously satisfying safety and serviceability requirements but consuming less time, cost and energy...

...Haotian Zheng; Michael Mooney; Marte Gutierrez This paper presents a surrogate-based Bayesian approach for updating the ground parameters within an application of the observational method in sequential excavation method (SEM) construction. A three-dimensional (3D) finite-difference model is used...

...Peter J. Hensman; Zhandos Y. Orazalin; Brian B. Sheil This paper describes the monitoring of the construction of a deep underground waste storage bunker for the PROTOS energy-from-waste facility in Chester, UK. A key element of the construction process was a 12 m deep excavation in soft clays...

...Johannes Tornborg; Mats Karlsson; Jelke Dijkstra; Minna Karstunen The processes and factors that underpin the development of effective heave pressure (EHP) at the base of deep excavations in soft soils have been numerically quantified for two idealised soil–structure systems, namely, a building...

...Luca Flessati; Claudio Di Prisco Mechanised tunnel excavation in soils causes over-excavations, potentially leading to large amounts of spoil and settlements at ground level. An accurate estimation of over-excavations is crucial in the pre-design phase for assessing costs, determining...

...Bruna de Carvalho Faria Lima Lopes; Alessandro Tarantino The paper presents an analysis of the long-term stability of a large unsupported cave excavated in granular cohesionless material in Ficulle, Italy. The stability of the cave arises from a ‘cohesive’ term in the shear strength criterion...

...Andrea Franza; Alec M. Marshall; Rafael Jimenez In urban areas, the construction of tunnels and deep excavations beneath and near pile foundations can be detrimental for the superstructure and the foundation. A two-stage continuum-based non-linear soil–pile interaction model is presented...

... located in the centre of Zurich. The monolithic 10 × 1 × 25 m deep barrettes, excavated and built in layered rock (Upper Freshwater Molasse), are also intended to stabilise the slope. The main contribution to their bearing capacity is given by the contact strength between the reinforced concrete...

... = N_pu1 and therefore f_mug = 1. The non-dimensional value s₁/D depends on the adhesion factor and is equal to 5 s 1 / D = 3 ⋅ 1 + 1 ⋅ 4 α Excavations in urban areas are often supported by soldier pile walls, which...

...R. Schuerch; A. Vrakas; G. Anagnostou Depending on shear strength and soil permeability, an excavation may initially be stable but fail after some time, thus raising the practically important issue of stand-up time. This paper uses coupled hydraulic–mechanical analyses to investigate how delayed...

...W. Gong; C. H. Juang; J. R. Martin, II This technical note presents a new framework for probabilistic analysis of the performance of a geotechnical system such as a diaphragm wall-supported excavation. The new framework consists of two components: a sampling algorithm and an integration method...

...Y. P. Dong; H. J. Burd; G. T. Houlsby The design of deep excavations requires careful consideration of the influence of various soil/structure interaction mechanisms and detailed issues relating to the construction processes and the mechanics of the soil. Finite-element analysis provides a useful...

... be proved rigorously for the plane strain rotationally symmetric ground response problem with a general elasto-plastic constitutive law with or without dilatancy and hardening. Numerical analyses of characteristic two- and three-dimensional excavation problems show that this relationship is generally...

...Y. LI; M. BOLTON Based on soil movement measurements in two centrifuge models simulating cantilever wall excavation in dense and loose sand respectively, simplified deformation mechanisms are proposed on both sides of the wall. Negative dilation angles are used in the mechanism to model sand volume...

... pressures in finite-element limit analysis, is also described. Following a brief outline of the new techniques, stability solutions are given for several practical problems, including foundations, anchors, slopes, excavations and tunnels. * ARC Centre of Excellence for Geotechnical Science and Engineering...

.... A groundwater model for the HS1 Channel tunnel rail link Thames tunnel southern approach excavation is used to show that the observed performance of the construction dewatering system cannot adequately be explained unless such features are incorporated. While experience suggested that such features were likely...

... conceptuelles, comme l'enveloppe en béton projeté, la pression de support TBM, et ainsi de suite. On est ainsi en mesure d'introduire une méthode efficace et innovante de résolution des problèmes de tunnelisation peu profonde dans un terrain cohésif — par frottement. design excavation plasticity soft...

...M. J. Schuster; C. H. Juang; M. J. S. Roth; D. V. Rosowsky Based on previously developed evaluation criteria, a serviceability limit state is established for reliability analysis of building damage caused by excavation. The term damage is defined herein as the violation of serviceability...

...C. K. Choy; J. R. Standing; R. J. Mair Diaphragm walls are used to support the sides of deep excavations, and they are often installed close to existing buildings. Construction of these cast-in-place permanent retaining structures can result in substantial soil deformations and potential damage...

... K₀ profile, the depth of excavation, and whether or not a low-strength tectonic shear surface was present in the slope. The analyses fall into the category of Class A predictions, and were used in the assessment of how long temporary slopes to deep excavations could be left open before backfilling...