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Finite-element analysis method to ensure the safety of invisible capping beams reinforced via the quick-replacement method

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Title Finite-element analysis method to ensure the safety of invisible capping beams reinforced via the quick-replacement method
 
Creator Tian, Shuai
Sun, Bo
Zhang, Luyang
 
Subject Bridge engineering
Pier structure
Safe maintenance
MIDAS/FEA
Replacement method
 
Description 481-492
This paper presents a Finite-Element Analysis (FEA) method to solve the problem of reduced bridge safety due to
insufficient durability of invisible capping beams. To reinforce a C30 invisible capping beam effectively and reasonably, a
quick-repair replacement concrete reinforcement method was utilized, and the strength necessary for the appropriate admixture
assessed. Specifically, the bearing capacity of the reinforced capping beam was studied via a single-point loading test, and the
optimal replacement thickness required to install the beam within two days and restore normal operation within three days was
determined using the non-linear software package MIDAS FEA. A finite-element model of equivalent size was employed using
MIDAS FEA to obtain the deflection, tensile stress, and pressure stress at the boundary. The results indicate that C40 early
strength concrete with 0.1–0.2% sodium gluconate admixture has the appropriate properties to achieve the target. It can be used
to replace deteriorated concrete on the surface of invisible capping beams with a replacement rate of 30%. Further, to achieve
the goal of resuming traffic within three days, the analysis results indicate that bilateral replacement with thickness 2 × 10 cm is
optimal and the maximum replacement thickness should not exceed 2 × 20 cm.
 
Date 2022-08-16T04:54:55Z
2022-08-16T04:54:55Z
2022-08
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscpr.res.in/handle/123456789/60282
https://doi.org/10.56042/ijems.v29i4.47364
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJEMS Vol.29(4) [AUG 2022]