FINITE ELEMENT MODELLING OF NOTCHED STEELCONCRETE COMPOSITE GIRDER REPAIRED USING FRP PLATES
Author(s):
Message:
Abstract:
There are limited studies available regarding the repair of steel beams and steel-concrete composite girders using fibre-reinforced polymer (FRP) reinforcements. However, among these studies there are a few resources dealing with numerical modelling of such beams using the finite element (FE) method. In this research a finite element simulation was developed to evaluate efficiency of various types of FRP plates, externally bonded on tension flange, on the enhancement of flexural strength of damaged composite girders. The primary defect in girders was simulated by inserting a notch through the tension flange and partial in web at mid-span. The occurrences of initiation and propagation of debonding as well as the effect of partial shear connection between the steel beam and concrete slab were taken into account. To ensure the validity of the proposed numerical model, the obtained results from the current analysis were compared with those existing experimental studies. This study focused on varying types of FRP and the amount of damage. Four common FRP types varying in modulus elasticity were employed to evaluate their influences on flexural strength and stress concentration at the critical region, i.e. the root of the notch. It was observed that higher modulus FRPs have more capability to limit the high principle strain in the critical region and, consequently, to reduce the rate of crack propagation across the steel section. Finally, the interaction between the FRP thicknesses and the notch depths in the web of steel beam was examined.
Language:
English
Published:
Asian journal of civil engineering, Volume:18 Issue: 8, Dec 2017
Page:
1287
magiran.com/p1750102  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!