Calculation method for the axial load-bearing capacity of steel pipe-to-sleeve grouted connections

Wu, Liwei; Guo, Xueyuan; Chen, Haibin; Liu, Junyang; Su, Yue

doi:10.1016/j.conbuildmat.2021.125621

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…Liu et al [27] optimized the anchoring structure by using a nonlinear FE analysis method. Wu et al [28] introduced an axial load-bearing capacity calculation method for steel pipe-to-sleeve grouted connections, which also showed the significance of the compression connection.…”

Section: Introductionmentioning

confidence: 99%

A Semi-Analytical Method for the Sealing Performance Prediction of Subsea Pipeline Compression Connector

Wang

Yao

et al. 2023

JMSE

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To predict the sealing performance of the subsea pipeline compression connector, a semi-analytical method is proposed and verified. The leakage condition is obtained as a function of the minimum radial deflection. The semi-analytical method consists of three parts: a macroscopic analytical model for the interference process deduced based on the membrane theory, a mesoscopic two-dimensional finite element analysis of the internally turned sealing surface according to scanning electron microscope observation, and a formulation of the leakage ratio according to the Abbott–Firestone curve. The influences of the geometry parameters are analyzed. The prediction and identification of the leakage condition near the minimum preloaded deflection are investigated. Experimental tests are also carried out to verify the proposed method. The results show that, within five times the pipeline threshold of the thin wall thickness, compression connectors designed by the proposed method can create a reliable seal with a rough internally turned surface, saving 57% of the design time while reducing the machining time and costs.

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Section: Introductionmentioning

confidence: 99%

A Semi-Analytical Method for the Sealing Performance Prediction of Subsea Pipeline Compression Connector

Wang

Yao

et al. 2023

JMSE

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“…Li et al [37] proposed a semi-analytical method to predict the radial sealing performance of the compression connector, and the leakage condition was obtained as a function of the minimum radial deflection. Wu et al [38] presented a method for calculating the axial load capacity of the steel pipe-to-sleeve grouted connections.…”

Section: Introductionmentioning

confidence: 99%

Semi-Analytical Methods for the Joint Strength and Sealing Performance in the Failure Process of the Subsea Pipeline Compression Connector

Wang

et al. 2023

JMSE

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Radial seals are sensitive to axial overload failure and may cause leaks. This paper presents two semi-analytical methods for the joint strength and sealing performance of the subsea pipeline compression connector under axial overload failure. The method for the joint strength consists of two parts: One is the analytical model for the joint strength of the connection and seal under axial tension and compression conditions. The models are based on membrane theory, considering the hardening and bending effects. The other is a two-dimensional, axisymmetric finite element model for the joint strength of the radial metal seal. The semi-analytical method for the overload sealing performance is derived using a finite element model and the Reynolds equation of the laminar flow. The effects of critical parameters on the joint strength and the overload sealing performance are analyzed. The experiments are carried out with specimens and prototypes to evaluate the evolution of the sealing interface and the joint strength. The results show that both the internally turned sealing surface and the deflection of the pipe can improve the joint strength. In addition, the compression-type connector can remain sealed under the maximum axial overload. The proposed methods allow the prediction and identification of the overload joint strength and the sealing condition of the compression-type connector and provide a better understanding of the radial metal seal under the axial overload condition.

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“…Wu [ 12 ] carried out experimental research on the flexural performance of concrete-filled steel tubular specimens and comparison specimens connected by grouting sleeves, and analyzed their stiffness, ductility, and stress process. For the connection of the grouting sleeve, the inability to accurately control the grouting amount [ 13 ] is likely to lead to the lack of grout at the connection of components, or the increase of the outer contour [ 14 ], which will lead to quality problems in the structure [ 15 ]. In view of this, it is necessary to provide a new connection mode with a high degree of standardization, convenient construction, reasonable mechanical properties, and not susceptible to environmental and anthropic factors, and further realize the diversity of concrete filled steel tube extension.…”

Section: Introductionmentioning

confidence: 99%

Test on Compressive Performance of Concrete Filled Circular Steel Tube Connected by Thread through Inner Lining Tube

2022

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The connection method of lengthening the steel tube of concrete filled circular steel tubes by inner lining tube and threaded connection is proposed. Taking the length, depth, and position of the thread as the basic parameters, 12 concrete filled circular steel tubes connected by thread through inner lining tube were designed and manufactured, and an axial compressive test was carried out. The axial compressive loading-longitudinal compressive displacement curves, axial compressive loading-strain of steel tube curves, and failure mode of the specimens were analyzed, and the effects of different parameters on the axial compressive bearing capacity and stiffness of the specimens were studied. The results show that the axial compressive loading-longitudinal compressive displacement curves of the specimen can be divided into the elastic stage, elasto-plastic stage, and plastic reinforcement stage in the range of parameters studied in this paper. The bearing capacity and stiffness of the specimens connected by thread through inner lining tube are no worse than those of the unconnected specimen or the specimen connected by weld. Bearing capacity and stiffness of the specimen increase with the increase of thread length. The calculation method of the axial compressive bearing capacity of concrete filled circular steel tubes connected by thread through inner lining tube are suggested.

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Calculation method for the axial load-bearing capacity of steel pipe-to-sleeve grouted connections

Cited by 10 publications

References 27 publications

A Semi-Analytical Method for the Sealing Performance Prediction of Subsea Pipeline Compression Connector

A Semi-Analytical Method for the Sealing Performance Prediction of Subsea Pipeline Compression Connector

Semi-Analytical Methods for the Joint Strength and Sealing Performance in the Failure Process of the Subsea Pipeline Compression Connector

Test on Compressive Performance of Concrete Filled Circular Steel Tube Connected by Thread through Inner Lining Tube

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