Time-Dependent Reliability Analysis of FRP Rehabilitated Pipes

Lee, Luke S.; Estrada, Hector; Baumert, Michael

doi:10.1061/(asce)cc.1943-5614.0000075

Cited by 18 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lee et al [6] reported that the use of fiber-reinforced polymer (FRP) composite materials is a potential solution to rehabilitating underground pipelines. FRP composites are very good construction materials because of their high specific stiffness, high specific strength, corrosion resistant, tailorability of properties, and enhanced fatigue life.…”

Section: Focus On Cured-in-place Pipe (Cipp) Liningsmentioning

confidence: 99%

“…In terms of the performance of FRP, the mechanical properties as well as the thickness and fiber orientation can cause significant deviations. Lee et al [6] also determined the instantaneous reliability by calculating the failure probability for similar pipes made from glass FRP (GFRP), carbon FRP (CFRP), and steel. The FRP materials used have fiber volume fraction (FVF) of 30% with all the fibers in the circumferential direction.…”

Section: Focus On Cured-in-place Pipe (Cipp) Liningsmentioning

confidence: 99%

See 1 more Smart Citation

Numerical analysis of stresses for cured-in-place-pipe linings

Chuk¹,

Urgessa²,

Thippeswamy³

2011

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

Underground pipes, such as water supply pipes and sewer pipes, are subjected to reduced strength and cracking due to aging. In order to combat strength reductions, excavation technologies have been used widely that allow replacing existing pipes with new pipes. However, these methods require road closures, traffic regulation and repaving. Various non-excavation (trenchless) repairs have been used in the last twenty years. This paper presents numerical analysis methods of stresses for pipes rehabilitated with cured-in-place-pipe (CIPP) linings. A CIPP lining is the common name given to the installation of a resin impregnated tube into a deteriorated pipe and curing it in place to produce a new structural pipe within a pipe. Examples of different liner types and their effect on reducing pipe wall stresses are presented.

show abstract

Section: Focus On Cured-in-place Pipe (Cipp) Liningsmentioning

confidence: 99%

Section: Focus On Cured-in-place Pipe (Cipp) Liningsmentioning

confidence: 99%

Numerical analysis of stresses for cured-in-place-pipe linings

Chuk¹,

Urgessa²,

Thippeswamy³

2011

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

show abstract

“…Externally bonded fibre-reinforced polymer (FRP) composites have been shown to be an effective strengthening method for existing engineering structures due to its excellent tensile strength, light weight, corrosion resistance, and easy tailoring [ 1 , 2 ]. The performance of this method depends on adequate bond strength between the FRP and the concrete, which ensures the stress transmission between and coordination of FRP and concrete [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, many uncertainties exist in the parameters of these models, such as concrete tensile strength, FRP stiffness, the width ratios of FRP, and concrete and the shear stiffness of the adhesive layer. Variation in mechanical properties and the geometry of FRP composites and adhesive layer can cause significant deviations from the intended design performance of an FRP rehabilitation, increase the probability of failure, and reduce the safety of the structure [ 2 ]. Kaiser and Karbhari [ 21 ] identified sources of uncertainty in wet layup composites such as wrinkled or broken fabric strands, the use of incorrect or tainted resin mixtures, poor site preparation, and the misplacement of fabric during layering.…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of Bond Behaviour of CFRP–Concrete Interface under Wet–Dry Cycles

Liang

et al. 2018

Materials

View full text Add to dashboard Cite

Effective bonding between adherents plays a key role in retrofitting concrete structures in civil engineering using fibre-reinforced polymers (FRPs). To ensure structural safety, it is critical to develop design codes, which account for uncertainties of materials, the environment, and load, to estimate bond behaviour under long-term exposure to harsh environments. Therefore, a reliability analysis was performed to study the bond behaviour of FRP–concrete interface under wet–dry cycles and sustained loading. Thirty double-lap, shear-bonded carbon FRP (CFRP)–concrete composite specimens were tested after wet–dry cycles and sustained loading exposure. The fracture energy Gf of the bond behavior between CFRP and concrete was directly obtained from the measured local bond-slip curves. Five widely used test methods were adopted to verify the possible distribution types of Gf. Based on the best fit distribution of Gf, a reliability index β was then calculated for the specimens. The effects of wet–dry exposure and sustained loading on β were analysed separately. The effects of the mean and standard deviation of the load on β were compared. It was found that the mean had a greater impact on reliability than the standard deviation, but neither changed the regulation of the exponential reduction of β with increasing wet–dry cycle time. Their impact was significant for a small number of wet–dry cycles but insignificant for more than 4000 wet–dry cycles.

show abstract

“…They performed a sensitivity analysis to identify the key corrosion parameters in terms of pipeline failure. Lee et al [ 11 ] presented the application of probabilistic modelling to evaluate the long-term performance of pipes. They evaluated the reliability of deteriorated pipes that were subjected to internal fluid pressure, external soil pressure and traffic loading.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Probability of Failure of Cementitious Sewer Pipes Using Stochastic Finite Element Method

Alani

Faramarzi

2015

IJERPH

View full text Add to dashboard Cite

In this paper, a stochastic finite element method (SFEM) is employed to investigate the probability of failure of cementitious buried sewer pipes subjected to combined effect of corrosion and stresses. A non-linear time-dependant model is used to determine the extent of concrete corrosion. Using the SFEM, the effects of different random variables, including loads, pipe material, and corrosion on the remaining safe life of the cementitious sewer pipes are explored. A numerical example is presented to demonstrate the merit of the proposed SFEM in evaluating the effects of the contributing parameters upon the probability of failure of cementitious sewer pipes. The developed SFEM offers many advantages over traditional probabilistic techniques since it does not use any empirical equations in order to determine failure of pipes. The results of the SFEM can help the concerning industry (e.g., water companies) to better plan their resources by providing accurate prediction for the remaining safe life of cementitious sewer pipes.

show abstract

Time-Dependent Reliability Analysis of FRP Rehabilitated Pipes

Cited by 18 publications

References 15 publications

Numerical analysis of stresses for cured-in-place-pipe linings

Numerical analysis of stresses for cured-in-place-pipe linings

Reliability Analysis of Bond Behaviour of CFRP–Concrete Interface under Wet–Dry Cycles

Predicting the Probability of Failure of Cementitious Sewer Pipes Using Stochastic Finite Element Method

Contact Info

Product

Resources

About