Numerical Validation of Seismic Analytical Solutions of Circular Tunnels (Case Study: Tehran Metro Line 6)

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

Rashiddel a.r.; Hadei m.r.; RAHMANNEJAD R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF ROCK MECHANICS Year:2017 | Volume:1 | Issue:2 Page(s): 9-27

Download Full-Text

Persian Verion

View:

659

Download:

Cites:

Information Journal Paper

Title

Numerical Validation of Seismic Analytical Solutions of Circular Tunnels (Case Study: Tehran Metro Line 6)

Author(s)

Rashiddel a.r. | Hadei m.r. | RAHMANNEJAD R. | Issue Writer Certificate

Keywords

Analytical Solution

Numerical Method

Soil-Structure Interaction

Seismic Loading

Ovaling Deformation

Abstract

Summary We have investigated the validation of different closed form solutions for seismic design of circular tunnel lining. To this end, we have used the Tehran metro line 6 as a case study. The finite difference commercial code (Flac2D) is used to simulate ovalling deformation due to earthquake loads. The influence of the deformation on structural behavior of tunnel lining under various ground conditions and Soil-Structure Interactions is also evaluated. Obtained results show that Penzien method calculates very low axial force under no slip condition. However the axial load by Wang and Park methods is very near to the computed load by Numerical Method. The validated numerical model is conducted to investigate the pseudostatic design of circular tunnel lining under real ground-structure interaction Introduction Since Iran is located in high risk area which experienced the intensive earthquake, the seismic analysis of underground structures is very important. There are presented some closed form solutions for seismic analysis of tunnel lining under full slip and no slip conditions. To different results obtained from the analytical methods under no slip condition, there is necessary to conduct numerical investigation for validation of the methods. Hashash et al. (2001), Sedarat et al. (2009), Park et al. (2009) and Do et al. (2015) have conducted some research in this area. Methodology and Approaches In this research, the Analytical Solutions based on mathematical equations and numerical modeling based on finite difference equations are conducted. To simulate the ground-structure interaction under no-slip, full slip and frictional conditions, the interface element is used in numerical modeling. The constitutive model of ground and lining is considered by linear elastic behavior and the seismic load is modeled by shear load at upper boundary of model. The induced inner traction in tunnel lining (axial force and moment) is calculated by numerical model at different aforesaid conditions and compared by analytical results. Results and Conclusions The seismic analysis of circular tunnel lining of Tehran metro line 6 is conducted by numerical model and Analytical Solutions. Obtained results show that the calculated axial load by Penzien method is not valid under no-slip condition. However, results of Park et al. method in very close to numerical model under no-slip condition. Under full slip behavior, the results of three analytical methods (Wang, Park and Penzien) are almost same and have certain difference with numerical model.

Cites

No record.

References

No record.

Cite

APA: Copy

Rashiddel, a.r., Hadei, m.r., & RAHMANNEJAD, R.. (2017). Numerical Validation of Seismic Analytical Solutions of Circular Tunnels (Case Study: Tehran Metro Line 6). JOURNAL OF ROCK MECHANICS, 1(2 ), 9-27. SID. https://sid.ir/paper/268315/en

Vancouver: Copy

Rashiddel a.r., Hadei m.r., RAHMANNEJAD R.. Numerical Validation of Seismic Analytical Solutions of Circular Tunnels (Case Study: Tehran Metro Line 6). JOURNAL OF ROCK MECHANICS[Internet]. 2017;1(2 ):9-27. Available from: https://sid.ir/paper/268315/en

IEEE: Copy

a.r. Rashiddel, m.r. Hadei, and R. RAHMANNEJAD, “Numerical Validation of Seismic Analytical Solutions of Circular Tunnels (Case Study: Tehran Metro Line 6),” JOURNAL OF ROCK MECHANICS, vol. 1, no. 2 , pp. 9–27, 2017, [Online]. Available: https://sid.ir/paper/268315/en

Related Journal Papers