Application of Carbon-Fiber Composite Material in Micropile Structure

Li, Xin; Bai, Mingzhou; Li, Tie; Qiu, Shumao; Shi, Hai

doi:10.1061/(asce)cf.1943-5509.0001379

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…Therefore, the remarkable layer of transformed silver carbon nanotube was promoted through the electrophoretic deposition technique for the preservation of CFRP structures and parts [104]. Carbon fibers have gradually replaced many traditional materials and have confirmed that by adding CF, the properties can be improved because CF rods are used rather than steel bars [105]. All these characteristics have led to an increase in the applicability of the carbon fibers, Figure 12 Carbon fiber reinforced polymer (CFRP) may have poor electrical conductivity, which influences some safety issues when exposed to lightning in aerospace applications [103].…”

Section: Carbon Fibersmentioning

confidence: 99%

A Review on Synthetic Fibers for Polymer Matrix Composites: Performance, Failure Modes and Applications

Rajak¹,

Wagh²,

Linul

2022

Materials

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In the last decade, synthetic fiber, as a reinforcing specialist, has been mainly used in polymer matrix composites (PMC’s) to provide lightweight materials with improved stiffness, modulus, and strength. The significant feature of PMC’s is their reinforcement. The main role of the reinforcement is to withstand the load applied to the composite. However, in order to fulfill its purpose, the reinforcements must meet some basic criteria such as: being compatible with the matrix, making chemical or adhesion bonds with the matrix, having properties superior to the matrix, presenting the optimal orientation in composite and, also, having a suitable shape. The current review reveals a detailed study of the current progress of synthetic fibers in a variety of reinforced composites. The main properties, failure modes, and applications of composites based on synthetic fibers are detailed both according to the mentioned criteria and according to their types (organic or inorganic fibers). In addition, the choice of classifications, applications, and properties of synthetic fibers is largely based on their physical and mechanical characteristics, as well as on the synthesis process. Finally, some future research directions and challenges are highlighted.

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Section: Carbon Fibersmentioning

confidence: 99%

A Review on Synthetic Fibers for Polymer Matrix Composites: Performance, Failure Modes and Applications

Rajak¹,

Wagh²,

Linul

2022

Materials

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“…In addition, it was confirmed through numerical analysis that as the slender ratio increased, the bending deformation increased [22]. Therefore, in order to increase the resistance to bending, a method of embedding a reinforcing material into a steel pipe [23] or manufacturing an integral vertical pile was studied [9]. However, minimizing the length of a micropile by increasing its frictional resistance is the most effective construction and cost-efficient method for decreasing buckling risk.…”

Section: Introductionmentioning

confidence: 99%

Development of Expanded Steel Pipe Pile to Enhance Bearing Capacity

Kim

Min³

et al. 2022

Sustainability

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An expanded steel pipe pile increases the cross-sectional area of conventional micropile by expanding the steel pipe to exhibit a higher bearing capacity owing to increased frictional resistance. However, construction cases of the expanded steel pipe pile are insufficient due to the absence of equipment for expanding steel pipes inside the ground. In this study, hydraulic expansion equipment was developed to verify the reinforcing impact on the bearing capacity and field applicability of the expanded steel pipe pile. A series of laboratory and test bed experiments was conducted to measure the expansion time and deformation of carbon steel pipes by using the developed equipment. The results of these experiments demonstrated that the developed equipment has sufficient ability and constructability to be used in the field for constructing expanded steel pipe piles. Then, field load tests were performed by constructing expanded and conventional steel pipe piles to confirm the improved bearing capacity of the expanded steel pipe pile compared to that of the conventional micropile. As a result, the expanded steel pipe pile exhibited a 20.88% increase in bearing capacity compared to that of the conventional steel pipe pile.

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“…Before the initial solidi cation of the jet grouting pile [2], the mini steel pipe pile with diameter less than Φ300 mm and length less than the length of the jet grouting pile is vertically pushed into the jet grouting pile along the central part by the improved microinserting and pressing mechanical equipment. After the strength of the jet grouting pile reaches 28 days, the composite foundation is formed [3]. In this combined system, the pile top load is mainly transmitted to the jet grouting pile through the friction around the mini steel pipe pile [4], and then the load is transmitted to the soil around the pile mainly by the friction force around the jet grouting pile [5] so as to complete the load transmission [6].…”

Section: Introductionmentioning

confidence: 99%

Digital Evaluation of Vertical Compressive Bearing Capacity for Jet Grouting Pile-Mini Steel Pipe Pile Composite Foundation

Wang

Mao²,

Wang

2022

Mathematical Problems in Engineering

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The jet grouting pile-mini steel pipe pile in soft soil area is composed of the jet grouting pile and the mini steel pipe pile. Through the analysis of the stress mode of the composite foundation under the overall compression of the pile top, the hypothetical diagram and calculation equation of the interfacial friction resistance distribution of the composite foundation are put forward. Thus, the calculation equation of the axial force of the mini steel pipe pile and the jet grouting pile is deduced, and the axial force distribution diagram of the mini steel pipe pile and the jet grouting pile in the composite foundation is defined. The vertical compression composite foundation in the field was selected for bearing capacity test and calculation and comparative analysis, and the relative error was 3%. Therefore, the stress mode and calculation method of the jet grouting pile-mini steel pipe pile proposed in this paper can meet the needs of engineering design and popularization and application of the composite foundation.

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Application of Carbon-Fiber Composite Material in Micropile Structure

Cited by 6 publications

References 14 publications

A Review on Synthetic Fibers for Polymer Matrix Composites: Performance, Failure Modes and Applications

A Review on Synthetic Fibers for Polymer Matrix Composites: Performance, Failure Modes and Applications

Development of Expanded Steel Pipe Pile to Enhance Bearing Capacity

Digital Evaluation of Vertical Compressive Bearing Capacity for Jet Grouting Pile-Mini Steel Pipe Pile Composite Foundation

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