Role of Grout Strength and Liners on the Performance of Slip-Lined Pipes

Smith, Trevor; Hoult, Neil A.; Moore, Ian D.

doi:10.1061/(asce)ps.1949-1204.0000203

Cited by 32 publications

(13 citation statements)

References 6 publications

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“…The maximum difference between the theoretical and the experimental results is 1.1%. The results also indicate that the plasticity approach and composite behavior method used by Smith et al [8] are likely not appropriate for rehabilitating an RCP given the behavior demonstrated by these specimens.…”

Section: Load-sharing Mechanismmentioning

confidence: 84%

“…Smith et al [8] used a plasticity approach to estimate the loadcarrying capacity of a slip-lined pipe; it was demonstrated that the moment capacity at the crown and invert was different from the moment capacity at the springlines and different methods were used to calculate the moment capacity at these sections; i.e., the moments caused compression in the CSP and the grout nearest the liner experienced tension at the crown and invert. In addition, the grout closest to the liner (inside of the pipe) was compressed, whereas the CSP experienced tension; therefore, the cross-section at these locations acted like an RC section where the pipe represented the tension reinforcement at the springlines.…”

Section: Load-sharing Mechanismmentioning

confidence: 99%

“…In addition, the grout closest to the liner (inside of the pipe) was compressed, whereas the CSP experienced tension; therefore, the cross-section at these locations acted like an RC section where the pipe represented the tension reinforcement at the springlines. As such, an RC approach was used to calculate the plastic moment capacity as described in the research by Smith et al [8]. This approach conservatively neglects the presence of the liner and the beneficial effects of the thrust on the moment capacity.…”

Section: Load-sharing Mechanismmentioning

confidence: 99%

“…Therefore, the load-carrying capacity of the slip-lined pipe should be calculated based on the RCP (see (8)). When the load-carrying capacity of the prerehabilitated pipe is known based on experimental or theoretical methods, the load-carrying capacity of the slip-lined pipe can be calculated using (8). As an example, the load-carrying capacity of the RCP (280 kN) was used as the load-carrying capacity of the pre-rehabilitated pipe ( 3 ) and (8) was used to calculate the load-carrying capacity of the RGC: = 3 × Σ / 3 = 280× 14.624/4.184 = 978.6 kN.…”

Section: Load-sharing Mechanismmentioning

confidence: 99%

“…SnapTite [7] was developed for use with an HDPE liner; it was determined that the compressive strength of the grout was not important, whereas the density and viscosity of the grout were two primary design considerations. Smith et al [8] investigated the compressive strength of the grout and found that a higher compressive strength resulted in a higher loadcarrying capacity of the rehabilitated pipe. Moore and Garcia [9] investigated two deteriorated corrugated steel pipelines repaired with spray-on cementitious liners and found that both full interaction and partial interaction occurred between the pipes; it was determined that a liner design should not rely on the assumption of a bond between the two components [10].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Experimental Investigation of an Existing RCP Rehabilitated with a Grouted Corrugated Steel Pipe

Zhu

et al. 2019

Mathematical Problems in Engineering

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Although slip-lining is the most common rehabilitation technique, few research studies have been conducted on the behavior of rehabilitated reinforced concrete pipes (RCPs). Experiments were conducted on a RCP rehabilitated with a grouted corrugated steel pipe (CSP). The RCP rehabilitated by the CSP showed an increase in both load-carrying capacity and stiffness. The grout played an important role in distributing the loads when the RCP was deteriorated, whereas the load shared by the CSP represented only a small part. When the CSP was closely fitted to the RCP at the invert, the load was shared between the PCP and CSP and the CSP carried most of the load when the RCP was fully deteriorated. The slip-lined pipe acted as a “pipe within a pipe” system. A load-sharing theory was proposed in this study and provides estimates of the load-carrying capacity of the slip-lined pipes.

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Section: Load-sharing Mechanismmentioning

confidence: 84%

Section: Load-sharing Mechanismmentioning

confidence: 99%

Section: Load-sharing Mechanismmentioning

confidence: 99%

Section: Load-sharing Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Investigation of an Existing RCP Rehabilitated with a Grouted Corrugated Steel Pipe

Zhu

et al. 2019

Mathematical Problems in Engineering

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Numerical Study of Encased RTP Behavior Under Internal Pressure

Noorazizi

Jasni

2022

Lecture Notes in Electrical Engineering

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Numerical Analysis and Load-Carrying Capacity Estimation of Reinforced Concrete Slab Culvert Rehabilitated with a Grouted Corrugated Steel Plate

Xin-sha

et al. 2023

Int J Steel Struct

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Two laboratory tests were conducted to investigate the mechanical properties and develop a load-carrying capacity estimation method for reinforced concrete (RC) slab culverts rehabilitated with a grouted corrugated steel plate (CSP). Subsequently, 216 numerical models of RC slab culverts rehabilitated with different shapes of CSPs and grout strengths were established to investigate the influence of these parameters and the arch effect on the rehabilitated system. A mechanical model was proposed based on the elastic center method, and a load-carrying capacity estimation method of RC slab culverts rehabilitated with grouted CSPs was established and verified. It was concluded that the load-carrying capacity of the rehabilitated system increased with a decrease in the radius of the side walls and crown at a constant radius of the CSP haunch. At a constant radius of the side walls and CSP crown, the load-carrying capacity of the rehabilitated system increased with an increase in the haunch radius. The most effective way to improve the load-carrying capacity of the rehabilitated system was to increase the radius of the haunches and reduce the radius of the arch crown and side wall. The arch effect of the grout was related to the load type. The load-carrying capacity of the rehabilitated system was the highest when the CSP was similar to or the same as the arch axes of the grout. The most important function of the grout was to provide strong lateral restraint for the CSP, reducing the required span and improving the load-carrying capacity of the CSP. In addition, the shear strength of the grout contributed to improving the load-carrying capacity by exerting an arch effect or experiencing shear failure. The proposed load-carrying capacity estimation method is applicable to rehabilitated systems with a box or arch-type CSP. Our findings provide guidance for engineers to design similar rehabilitated systems.

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Role of Grout Strength and Liners on the Performance of Slip-Lined Pipes

Cited by 32 publications

References 6 publications

Experimental Investigation of an Existing RCP Rehabilitated with a Grouted Corrugated Steel Pipe

Experimental Investigation of an Existing RCP Rehabilitated with a Grouted Corrugated Steel Pipe

Numerical Study of Encased RTP Behavior Under Internal Pressure

Numerical Analysis and Load-Carrying Capacity Estimation of Reinforced Concrete Slab Culvert Rehabilitated with a Grouted Corrugated Steel Plate

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