Time-Dependent Response of Tunnels Considering Creep Effect

Phienwej, N.; Thakur, Pramod Kumar; Cording, Edward J.

doi:10.1061/(asce)1532-3641(2007)7:4(296)

Cited by 51 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Numerical studies and solutions to time-dependent (or creep) deformations (e.g., [7][8][9]) are not reviewed herein because they are beyond the scope of this study.…”

Section: Introductionmentioning

confidence: 99%

Predicting Tunnel Squeezing Using Multiclass Support Vector Machines

Sun

Feng

Yang

2018

Advances in Civil Engineering

View full text Add to dashboard Cite

Tunnel squeezing is one of the major geological disasters that often occur during the construction of tunnels in weak rock masses subjected to high in situ stresses. It could cause shield jamming, budget overruns, and construction delays and could even lead to tunnel instability and casualties. erefore, accurate prediction or identification of tunnel squeezing is extremely important in the design and construction of tunnels. is study presents a modified application of a multiclass support vector machine (SVM) to predict tunnel squeezing based on four parameters, that is, diameter (D), buried depth (H), support stiffness (K), and rock tunneling quality index (Q). We compiled a database from the literature, including 117 case histories obtained from different countries such as India, Nepal, and Bhutan, to train the multiclass SVM model. e proposed model was validated using 8-fold cross validation, and the average error percentage was approximately 11.87%. Compared with existing approaches, the proposed multiclass SVM model yields a better performance in predictive accuracy. More importantly, one could estimate the severity of potential squeezing problems based on the predicted squeezing categories/classes.

show abstract

“…Numerical studies and solutions to time-dependent (or creep) deformations (e.g., [7][8][9]) are not reviewed herein because they are beyond the scope of this study.…”

Section: Introductionmentioning

confidence: 99%

Predicting Tunnel Squeezing Using Multiclass Support Vector Machines

Sun

Feng

Yang

2018

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Analytical or numerical solutions to time-dependent (or creep) deformations (see, e.g. Guan et al, 2008;Phienwej et al, 2007;Sterpi and Gioda, 2009) are outside the scope of our analysis and, therefore, they are not reviewed herein. This paper uses Bayesian networks (BNs) to predict the occurrence of squeezing.…”

Section: Introductionmentioning

confidence: 99%

Predicting tunnel squeezing with incomplete data using Bayesian networks

Feng

Jimenez

2015

Engineering Geology

View full text Add to dashboard Cite

“…Problem proračuna i procjene vremenski ovisnih deformacija rješavan je empirijskim formulama koje su kod tunela, u jednom periodu, davale ekonomski i tehnički prihvatljive rezultate. Brz napredak razvoja računala i numeričkih metoda u prethodnih nekoliko desetljeća doveli su do razvoja složenih reoloških modela [5][6][7][8], numeričkih procedura i računalnih programa koji su omogućili bolje razumijevanje složeno, vremenski ovisno ponašanje podgradne konstrukcije i stijenske mase oko tunelskog otvora, [9,10], i dr. Pri formiranju matematičkih modela nužno je i definirati karakteristične reološke koeficijente i parametre materijala. Općenito se parametri materijala i konstante dobivaju laboratorijskim ispitivanjima ili ispitivanjima na terenu.…”

Section: Uvodunclassified

Inicijalne i vremenski ovisne deformacije oko malog kružnog otvora u laporu

Lakušić¹

2014

JCE

View full text Add to dashboard Cite

Inicijalne i vremenski ovisne deformacije oko malog kružnog otvora u laporuOsnovna karakteristika standardnih laboratorijskih pokusa je ta da se provode na uzorcima jednostavnog geometrijskog oblika i stanja naprezanja. Uobičajeno je da se parametri materijala, dobiveni iz ovih pokusa, koriste u numeričkim modelima koji opisuju dosta složenije pojave ovisne o naprezanju. Zbog toga je nužno, na modelima ili tijekom gradnje stvarnih objekata, provjeriti rezultate numeričkih modela. U ovom radu prikazuju se rezultati deformacija u vremenu oko kružnog otvora promjera 10,8 cm, na dvodimenzionalnom modelu od lapora dimenzija 60 x 60 x 10 cm. Initial and time-dependent deformations in marl around small circular openingThe basic property of standard laboratory tests is that they are conducted on samples of simple geometry and stress state. It is a common practice to use material parameters obtained from such tests in numerical models that describe more complex stressdependent phenomena. For this reason, numerical modelling results have to be verified either through models or during construction of actual structures. The paper presents results of time-dependent deformations around the circular opening 10.8 cm in diameter, using the two-dimensional marl model measuring 60 x 60 x 10 cm

show abstract

Time-Dependent Response of Tunnels Considering Creep Effect

Cited by 51 publications

References 14 publications

Predicting Tunnel Squeezing Using Multiclass Support Vector Machines

Predicting Tunnel Squeezing Using Multiclass Support Vector Machines

Predicting tunnel squeezing with incomplete data using Bayesian networks

Inicijalne i vremenski ovisne deformacije oko malog kružnog otvora u laporu

Contact Info

Product

Resources

About