SDMT-Based Numerical Analyses of Deep Excavation in Soft Soil

Mariano, Alessandra di; Amoroso, Sara; Arroyo, Marcos; Monaco, Paola Alfonsa Vieira Lo; Gens, Antonio

doi:10.1061/(asce)gt.1943-5606.0001993

Cited by 11 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The added potentiality of measuring seismic velocities has the advantage of complementing the geotechnical characterization, particularly with respect to earthquake hazard purposes. Several Authors (e.g., Marchetti et al 2008;Amoroso et al 2014;Cox and Mayne 2015;Di Mariano et al 2019) have already presented procedures to calibrate stiffness decay curves using DMT and V S measurements. The added V P acquisitions can further improve the geotechnical characterization facilitating the interpretation of the pore pressure and degree of saturation profiles with the combined use of p 2 data.…”

Section: Discussionmentioning

confidence: 99%

Combined P- and S-Wave Measurements by Seismic Dilatometer Test (SPDMT): A Case History in Bondeno (Emilia Romagna, Italy)

Amoroso

Comina

Marchetti³

2020

Geotechnical Testing Journal

Self Cite

View full text Add to dashboard Cite

A new seismic dilatometer (SPDMT) has been developed to combine the measurements of the flat dilatometer (DMT) geotechnical parameters with both P-and S-waves velocities. This new SPDMT is composed of the traditional mechanical DMT and four sensors for measuring the body waves velocities placed above the DMT blade. This SPDMT device is presented here, and the test procedure and the interpretation of P-and S-wave measurements are discussed.Results of the application of this new instrument are reported in a test site located in Bondeno (Emilia Romagna, Italy). Here, challenging water table conditions offer the opportunity to evaluate the advantage of a combined measure of the two propagation velocities, together with DMT geotechnical parameters, with the same apparatus for the porosity evaluation and a more calibrated liquefaction assessment.

show abstract

Section: Discussionmentioning

confidence: 99%

Combined P- and S-Wave Measurements by Seismic Dilatometer Test (SPDMT): A Case History in Bondeno (Emilia Romagna, Italy)

Amoroso

Comina

Marchetti³

2020

Geotechnical Testing Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…11). The site is located on top of the Llobregat river delta, a soft soil area, rich in infrastructures and intensively investigated (e.g., Di Mariano et al, 2019). Representative results from a larger site investigation campaign (Deu et al, 2021) are examined (Fig.…”

Section: Illustrative Application Example: Barcelona Nearshore Sedimentsmentioning

confidence: 99%

Bayesian Mixture Analysis of a Global Database to Improve Unit Weight Prediction from Cptu

collico¹,

Arroyo²

2022

SSRN Journal

View full text Add to dashboard Cite

“…To ensure the safety of deep excavations and the surrounding environment, it is crucial for practical engineers to pay close attention to the horizontal displacement of the diaphragm walls, particularly the maximum displacement [12,13], as well as the precise location of underground utilities in the vicinity of the excavations [14,15]. Numerical modelling has been commonly used to predict the displacement of the diaphragm walls during the excavation process [16][17][18][19][20]. Guo et al [21] used the finite difference method to analyse the deflections of a deep metro station excavation braced by diaphragm walls under unsymmetrical surcharge effects.…”

Section: Introductionmentioning

confidence: 99%

“…However, the modelling process is relatively time-consuming, and structural forces of diaphragm walls have to be calculated from the stresses at element integration points, which makes the whole process cumbersome in a practical design situation. For the aforementioned reasons, the joints between panels were typically disregarded in numerical modelling [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Displacement Analyses of Diaphragm Wall in Small-Scale Deep Excavation Considering Joints between Panels

Yang,

Wu,

Tong

et al. 2024

Buildings

View full text Add to dashboard Cite

This paper proposed a new method for modelling joints, using anisotropic plate elements and elastic bar elements to address the issue that joints between panels are usually disregarded in numerical modelling. For small-scale deep excavations, which are frequently performed in the construction of various working shafts but have not been sufficiently studied, two numerical models were developed, using the No.1 Shaft of Tongtu Road Utility Tunnel in Ningbo, China, as a research object. One model considered the joints between the panels as proposed, while the other disregarded the joints as conventional. In comparison to the conventional method, the proposed method was validated due to yielding wall displacements that closely matched the results of the field monitoring, with a notable reduction in the error observed in the calculated displacements for the short side of the excavation. Furthermore, 34 numerical models were developed in order to investigate the influence of excavation length, depth, and diaphragm wall thickness on the relative differences between the calculated displacements obtained by the two models. The results of this study can provide references for the development of finite element models for designing small-scale deep excavation.

show abstract

SDMT-Based Numerical Analyses of Deep Excavation in Soft Soil

Cited by 11 publications

References 24 publications

Combined P- and S-Wave Measurements by Seismic Dilatometer Test (SPDMT): A Case History in Bondeno (Emilia Romagna, Italy)

Combined P- and S-Wave Measurements by Seismic Dilatometer Test (SPDMT): A Case History in Bondeno (Emilia Romagna, Italy)

Bayesian Mixture Analysis of a Global Database to Improve Unit Weight Prediction from Cptu

Displacement Analyses of Diaphragm Wall in Small-Scale Deep Excavation Considering Joints between Panels

Contact Info

Product

Resources

About