رفتن به مطلب
تالار گفتگوی ایران سازه، وبسایت تخصصی مهندسی عمران
admin

Three-dimensional finite element analysis for soil slopes stabilization using piles

پست های پیشنهاد شده

Three-dimensional finite element analysis for soil slopes stabilization using piles

I-Hsuan Ho

ABSTRACT
This paper presents the analytical methods of slope-stabilising piles using the three-dimensional
(3-D) finite element (FE) analysis with the strength reduction method (SRM). This 3-D
FE model is employed to overcome the limitations observed in two-dimensional (2-D) FE
analysis. The solutions obtained from 3-D FE analyses are verified to be less conservative in
this paper. The 3-D analysis is considered to be of particular importance to pile-slope
problems. The soil that flows between piles cannot be taken account properly in the 2-D
FE analysis. The method adopted in this paper can avoid the assumption of soil movement
and the pressure distribution along the piles subjected to soil movement. The numerical
analysis employs the Mohr–Coulomb failure criterion with the strength reduction technique
for soil and an elastic member for piles. The spacing effect of the pile is considered in the 3-
D model, the S/D (S: centre to centre, 😧 diameter of pile) ratio, equal to 4.0, is found to be
equivalent to the single pile stabilisation. The middle portion of the slope is identified as
the optimal location to place the piles. The proper length of the pile, which can be used to
stabilise the slope, is also examined using 3-D FE analyses. It is concluded that L/H greater
or equal 0.70 is recommended (L: pile length, H: slope height). The numerical analyses are
conducted based on a coupled analysis, which simultaneously considers both the slope
stability and the pile response. The failure mechanisms of the pile-slope system subjected to
the pile locations, pile head conditions and pile length are each discussed. The contact
pressure, shear force and moment along the piles are presented to illustrate the pile
stabilising mechanism herein.

 

Hidden Content

    Give reaction or reply to this topic to see the hidden content.

photo_2019-10-05_20-18-28.jpg

Hidden Content

    Give reaction or reply to this topic to see the hidden content.

به اشتراک گذاری این ارسال


لینک به ارسال
به اشتراک گذاری در سایت های دیگر

برای ارسال دیدگاه یک حساب کاربری ایجاد کنید یا وارد حساب خود شوید

برای اینکه بتوانید دیدگاهی ارسال کنید نیاز دارید که کاربر سایت شوید

ایجاد یک حساب کاربری

برای حساب کاربری جدید در سایت ما ثبت نام کنید. عضویت خیلی ساده است !

ثبت نام یک حساب کاربری جدید

ورود به حساب کاربری

دارای حساب کاربری هستید؟ از اینجا وارد شوید

ورود به حساب کاربری

  • کاربران آنلاین در این صفحه   0 کاربر

    هیچ کاربر عضوی،در حال مشاهده این صفحه نیست.

  • مطالب مشابه

    • توسط admin
      FINITE ELEMENT BASED DESIGN PROCEDURES FOR MSE/SOIL-NAIL HYBRID RETAINING WALL SYSTEMS
      ABDULRAHMAN ALHABSHI
      Texas Tech University
      December, 2006
       
      رساله دکتری مرتبط با نیلینگ
      دانشگاه تگزاس

      Hidden Content
      Give reaction or reply to this topic to see the hidden content.  


      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
    • توسط admin
      Lateral Earth Pressure on Lagging in Soldier Pile Wall Systems
      Howard A. Perko, Ph.D, P.E., CTL|Thompson, Fort Collins, CO, USA hperko@ctlthompson.com
      John J Boulden, SGM, Inc., Grand Junction, CO johnb@sgm-inc.com
      Soldier pile and lagging is a conventional means of temporary excavation shoring. Timber lagging
      design has traditionally been based upon the designer’s experience or empirical rules. One such method
      is the Goldberg Zoino chart used by the Federal Highway Administration. Most of these methods
      restrict the designer to a consistent soil profile, certain pile spacing, construction grade timber lagging,
      and limited depth. The methods do not take into account surcharge loads or a variety of other factors
      that could arise. A designer working outside of ordinary circumstances with unusual loads, varying soil
      conditions, or alternate lagging materials has difficulty estimating lateral earth pressures.
      In rigid earth retention systems, lateral earth pressure is generally assumed to be constant along the
      length of the wall. In soldier pile and lagging systems, the lagging is often considerably less stiff than
      the steel soldier piles. As the lagging deflects, the soil tends to bridge between the stiffer elements
      resulting in a lower pressure on the lagging. Several previously published methods by others for
      determining this reduced pressure are summarized and discussed. These methods typically consist of
      using a portion of the active earth pressure in several different pressure distributions.
      A simple theoretical model is presented for determination of lateral earth pressures on wood lagging.
      The model is based on a three-dimensional “silo” shaped sliding wedge analysis. Results of the model
      are compared with other published methods. The model compares well with these methods which
      cover the normal spectrum of design situations. In addition, the model can be used to estimate lateral
      earth pressures outside typical situations.

      Hidden Content
      Give reaction or reply to this topic to see the hidden content.  

      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
    • توسط admin
      FRP composite piles - Applications  & Durability Considerations
      شمعهای مرکب FRP  کاربردها و ملاحظات
      فایل پی دی اف به زبان انگلیسی در 44 اسلاید

      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
    • توسط admin
      جزوه اجزاء محدود - دکتر مهدی اسفندی سرافزار
      شامل 4 فصل به شرح زیر :
      فصل اول :
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.   مقدمه فصل دوم :
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.   المان میله ای فصل سوم :
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.   المان تیر فصل چهارم :
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.   المانهای صفحه ای و فضایی - حالت دوبعدی و سه بعدی 
      Hidden Content
      Give reaction or reply to this topic to see the hidden content. از پیوست هم دانلود امکانپذیر است
       
       
       
       

      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
      Hidden Content
      Give reaction or reply to this topic to see the hidden content.
  • 32 نظرسنجی در مورد ارجاع نظارت در نظام مهندسی

    1. 1. نظر شما در مورد ارجاع نظارت در نظام مهندسی چیست؟


      • موافقم
      • مخالفم
      • با انجام اصلاحاتی در فرآیند موجود، موافقم

  • آمارهای کاربران

    • کل کاربران
      8,281
    • بیشترین آنلاین
      5,013

    جدیدترین کاربر
    Mohamad2112
    تاریخ عضویت
  • چه کسانی آنلاین هستند؟ (مشاهده لیست کامل)

    در حال حاضر هیچ کاربر عضوی آنلاین نیست

  • کاربران

    • kiani20090

      kiani20090 13

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • ImanSafari1989

      ImanSafari1989 3

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • askari36

      askari36 62

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • admin

      admin 1,574

      Administrators
      تاریخ عضویت :
      آخرین فعالیت :
    • omidreza57

      omidreza57 9

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • mehran7240

      mehran7240 17

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • art

      art 23

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • fardin

      fardin 4

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • mohammadmahdi2

      mohammadmahdi2 39

      Members
      تاریخ عضویت :
      آخرین فعالیت :
    • saital

      saital 1

      Members
      تاریخ عضویت :
      آخرین فعالیت :

درباره ما

انجمن های گفتگوی ایران سازه ، وبسایت تخصصی مهندسی عمران

این انجمن ، نسخه جدید انجمن ایران سازه میباشد

Follow us

×
×
  • جدید...