تحلیل پارامتری اندرکنش بین تونل‌های موازی و زمین اطراف با تکیه بر موقعیت نسبی و روند حفاری آن‌ها (مطالعه موردی: برای تونل‌های ساخته شده در محیط شهری شیراز)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد؛ دانشکده‌ی مهندسی معدن، دانشگاه صنعتی امیرکبیر

2 دانشجوی کارشناسی ارشد؛ دانشکده‌ی مهندسی معدن، دانشگاه صنعتی امیرکبیر

10.22044/tuse.2022.11441.1440

چکیده

توسعه صنعت حمل و نقل باعث ساخت تونل­هایی در همسایگی هم شده است. این تونل­ها به طور موازی در کنار هم قرار می­گیرند یا به طور متقاطع غیر هم سطح ساخته می­شوند. محل قرارگیری این تونل­ها نسبت به یک دیگر و روند حفاری آن­ها در توزیع تنش اطراف تونل­ها و روی رفتار زمین تاثیر گذار است. عدم درک مناسب رفتار سازه­های مجاور می­تواند منجر به بروز حوادث جبران ناپذیر شود. به همین دلیل مطالعه این سازه­ها امری ضروری است. هدف از انجام مطالعه بررسی کامل تاثیر حفاری تونل­های موازی بر نیروهای القایی وارد بر پوشش نگهداری تونل اول و نشست سطح زمین به منظور شناخت رفتار سازه­های مجاور می­باشد. در این مقاله با استفاده از روش اجزا محدود پلکسیس دو بعدی این تحلیل­ها انجام شده است. طبق نتایج به دست آمده با افزایش فاصله افقی بین دو تونل، مقدار نشست سطحی کاهش می­یابد در حالی که با افزایش فاصله قائم بین تونل­ها مقدار نشست سطحی افزایش یافته است. همچنین افزایش عمق تونل دوم باعث افزایش بار القایی و لنگر خمشی بر روی پوشش نگهداری تونل اول شده است. افزایش فاصله قائم باعث تغییرات بیش­تری نسبت به افزایش فاصله افقی بین دو تونل روی موارد خروجی مورد نظر دارد.

کلیدواژه‌ها


عنوان مقاله [English]

Parametric analysis of the interaction between parallel tunnels and the surrounding ground based on their relative position and excavation process (Case study: for tunnels built in the urban environment of Shiraz)

نویسندگان [English]

  • K. Shahriar 1
  • M. Arash 2
  • M. R. Faraji Tilehnoei 2
2 Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran
چکیده [English]

Tunnels have been built in the neighborhood as a result of the growth of the transportation industry. These tunnels are built crosswise or parallel to each other, not level. The distribution of stress around the tunnels and the behavior of the ground are affected by the location of these tunnels relative to each other and the drilling process. Accidents can occur due to a lack of understanding of the behavior of adjacent structures. As a result, understanding these structures is critical. The goal of this research is to fully investigate the impact of parallel tunnel drilling on inductive forces on the first tunnel's maintenance cover and subsidence in order to better understand the behavior of nearby structures. These analyses were carried out in this paper using the plaxis 2D finite element method. According to the findings, the amount of surface subsidence decreases as the horizontal distance between the two tunnels increases, while the amount of surface subsidence increases as the vertical distance between the tunnels increases. Increasing the depth of the second tunnel has also increased the inductive load and bending moment on the first tunnel's maintenance cover. Increasing the vertical distance between the two tunnels on the desired outlets causes more changes than increasing the horizontal distance.

کلیدواژه‌ها [English]

  • Tunneling
  • Surface subsidence
  • Parametric analysis
  • Interaction
  • Plaxis 2D
  • bending moment
  • axial force
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