scholarly journals TEORÍA DE CONSOLIDACIÓN, UNA REVISIÓN DE LA LITERATURA

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Sócrates Pedro Muñoz Pérez ◽  
Wendy Analí Sánchez Monja ◽  
Juan Martín García Chumacero
Keyword(s):  
Flac 3D

El objetivo de esta presente investigación, es una revisión literaria de 60 referencias bibliográficas de las cuales 46 son artículo de revistas indexadas en la base de datos Scopus y Scielo, 13 libros y 01 tesis que sustentan la evolución de la teoría de la consolidación unidimensional propuesta por Terzaghi en 1925 para predecir los asentamientos producto de la disminución de los vacíos debido a la expulsión parcial y total del agua, A través del tiempo está teoría tomó mayor soporte teórico y es usada en muchos proyectos geotécnicos y civiles para el cálculo de asentamientos a través de programas de elementos finitos como PLAXIS y FLAC 3D. Se concluye que se ha logrado grandes avances de modelar el comportamiento hidromecánico de suelo en programas de elementos finitos para poder explicar la heterogeneidad del suelo y explicar la interacción que debe de tener con la superestructura.

Determining The Minimum Distance Between Centers of Two Parallel Tunnels to Apply The Law of Super Position in Order to Calculate Subsidence by Using The Software FLAC 3D

2015 ◽  
Vol 1 (1) ◽  
pp. 13-20
Author(s):  
Hamid Reza Samadi ◽  
Mohammad Reza Samadi
Keyword(s):  
Minimum Distance ◽  
Surface Subsidence ◽  
Urban Traffic ◽  
Underground Structures ◽  
Rapid Population Growth ◽  
The North ◽  
Flac 3D ◽  
The Law ◽  
3D Software ◽  
Twin Tunnels

Due to the development of cities as well as rapid population growth, urban traffic is increasing nowadays. Hence, to improve traffic flow, underground structures such as metro, especially in metropolises, are inevitable. This paper is a research on the twin tunnels Of Isfahan's metro between Shariaty station and Azadi station from the North towards the South. In this study, simultaneous drilling of subway's twin tunnels is simulated by means of Finite Difference Method (FDM) and FLAC 3D software. Moreover, the lowest distance between two tunnels is determined in a way that the Law of Super Position could be utilized to manually calculate the amount of surface subsidence, resulted by drilling two tunnels, by employing the results of the analysis of single tunnels without using simultaneous examination and simulation. In this paper, this distance is called "effective distance". For this purpose, first, the optimum dimensions of the model is chosen and then, five models with optimum dimensions will be analyzed separately, each of which in three steps. The results of analyses shows that the proportions (L/D) greater than or equal 2.80, the Law of Super Position can be applied for prediction of surface subsidence, caused by twin tunnels' construction

Numerical Research on Relationship between Displacement and Ground Overloading of Soil Nailing with FLAC

2012 ◽  
Vol 446-449 ◽  
pp. 1343-1347
Author(s):  
Jian Ping Sun ◽  
Guang Biao Shao ◽  
Zong Bao Jiang
Keyword(s):  
Numerical Analysis ◽  
Vertical Displacement ◽  
Soil Nailing ◽  
Flac 3D ◽  
Numerical Research ◽  
Set Up ◽  
Design And Construction

Based on an engineering example,the FLAC-3D was applied to set up numerical analysis,analyzing the influence of the overloading acting position and the magnitude on the horizontal and vertical displacement of the foundation pit.Some useful conclusion was obtained,which will offer reference to the design and construction of the soil nailing.

Study on Effects of Ground Deformation Based on Foundation Pit Excavation

2013 ◽  
Vol 671-674 ◽  
pp. 357-362
Author(s):  
Hai Ming Liu ◽  
Jing Cao ◽  
Wei Feng Zhang
Keyword(s):  
Ground Deformation ◽  
Underground Space ◽  
Close Attention ◽  
Foundation Pit ◽  
Clay Model ◽  
Modified Cam Clay ◽  
Peaty Soil ◽  
Flac 3D ◽  
Coulomb Model ◽  
Cam Clay

With the continuous development of urban underground space, the environmental effects of foundation pit excavation have been paid extensive close attention. Unfortunately, there are few researches in mucky soil and peaty soil. Adopted the software of FLAC-3D, the ground deformation due to the foundation pit excavation is simulated. Considering the characteristic of the soil, the Modified Cam-clay model and Mohr-coulomb model are used during the simulation. Meanwhile, the structure units are used to simulate foundation pit structure. The results of the field measurement and numerical simulation suggest that the influenced range soil is about 2.7 times of the excavation depth. Furthermore, the Modified Cam-clay model can obtain a better result to simulate the mucky soil and peaty soil in Kunming. The results can be referred to design and construct of foundation pits.

Research and Design Optimization of Canceling Setting Invert in Road Tunnel

2012 ◽  
Vol 594-597 ◽  
pp. 1201-1205
Author(s):  
Dong Qiang Xu ◽  
Jia Liu ◽  
Yue Sun
Keyword(s):  
Surrounding Rock ◽  
Road Tunnel ◽  
Flat Bottom ◽  
Highway Tunnel ◽  
Static Calculation ◽  
Flac 3D ◽  
Research And Design ◽  
Grade Rock ◽  
Rock Section ◽  
Surrounding Rock Deformation

Use FLAC 3D finite difference software for numerical simulation and static calculation of the different models. Study the deformation and forces condition of different model during the process of excavation. The results show that setting invert of highway tunnel in Ⅳ1-grade rock section can improve the stress state of the supporting structure and reduce the surrounding rock deformation effectively. At the same time, the flat bottom tunnel applying C25 concrete and grouting bolts could improve the integrity of surrounding rock below the tunnel sidewall. It is can be considered to cancel the setting of invert to achieve the purpose of simplifying the construction and design.

Numerical Simulation for Construction Process Large-Span Flat Tunnel under the Condition of Shallow Buried

2014 ◽  
Vol 580-583 ◽  
pp. 1100-1104
Author(s):  
Jun Jie Li ◽  
Li Tuo ◽  
Guan Jun Zhang
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Tunnel Construction ◽  
Construction Process ◽  
Large Span ◽  
Tunneling Method ◽  
Stress Changes ◽  
Flac 3D ◽  
3D Software ◽  
Grade Rock

The thesis takes a three-lane tunnel construction in Zhejiang as an example. Simulating the course of dynamic construction of large-span tunnel on geology condition of four-grade rock mass and shallow buried by FLAC 3D software ,it carries out comparative and stress situation in the runnel surrounding rocks .Getting the displacement and stress changes rule of the construction by using benching with a small pilot tunnel tunneling method can guide the construction scientifically.

scholarly journals Analysis of Stability Factors of Roadway Roof and Determination of Unsupported Roof Distance

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Sen Yang ◽  
Xinzhu Hua ◽  
Xiao Liu ◽  
Chen Li
Keyword(s):  
Influencing Factors ◽  
Geological Conditions ◽  
Mine Roadway ◽  
Flac 3D ◽  
Roof Stability ◽  
Analysis Of Stability ◽  
The Stability ◽  
The Impact ◽  
The Relationship

To determine the impact of influencing factors on unsupported roof stability in coal mine roadway, a mechanical model of the unsupported roof was built. FLAC 3D numerical simulation was utilized to study the stability of the unsupported roof under the influence of the depth of the roadway, the thickness of the roof, and the unsupported-support distance. In view of the key influencing factors, the geological conditions of the site, and the relationship between the tensile stress and tensile strength of the unsupported roof, the maximum unsupported roof distance during roadway excavation was determined. Considering the surplus safety factor of the unsupported roof, the reasonable unsupported roof distance during the excavation of roadway 150802 was finally determined to be 2.08 m. The comprehensive roadway excavation speed increased by 62.7%, achieving a monthly progress over 500 m.

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