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Experimental and Numerical Analysis of Composite Contribution Structures

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A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Computation and Simulation on Metals".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 11237

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Special Issue Editor

Prof. Dr. Piotr Paczos

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Guest Editor

Faculty of Mechanical Engineering, Poznan University of Technology, 21000 Poznan, Poland
Interests: thin-walled structures; composite structures; experimental investigation; FEM; CuFSM

Special Issue Information

Dear Colleagues,

The main aim of the Special Issue is to promote experimental and numerical research on steel structures reinforced with composite materials. Currently, scientists are looking for lighter structures that have high strength properties and are not prone to buckling. Steel structures made of standard structural members (bars, beams, columns, plates) may be reinforced with materials that have higher strength properties. In this Special Issue, the application of fiber-reinforced polymers (FRP) to strengthening of steel profiles is discussed. Such profiles are used in the aviation and transport industry and in civil engineering. The development of FRP and their application in the aviation industry in the last 25 years have shown that these materials can withstand severe weather conditions and can carry high loads. Carbon fiber-reinforced polymers (CFRP) are a promising alternative to standard methods of reinforcing steel structures. They are corrosion resistant, have low density and high tensile strength. The gluing of composite elements is simple and easy to implement. The big advantage of steel profiles reinforced with FRP is their increased resistance to static, dynamic and fatigue loads. This can be achieved without significant increase of the weight. The most interesting articles present experimental investigations and numerical simulations that can be used to prepare and validate computational methods of analyzing of such structures.

Prof. Dr. Piotr Paczos
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

thin walled structures
steel structures
composite structures
experimental investigation
FEM
carbon fiber
CFRP

Published Papers (4 papers)

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Research

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16 pages, 16050 KiB

Open AccessArticle

Study on Construction Molding Technology of Long-Span Space Truss Suspended Dome Structure

by Mingliang Liu, Junhai Zhao, Yongkang Jiao, Cun Hui, Chunjuan Zhou, Xiao Yang and Yupeng Zhang

Metals 2023, 13(1), 22; https://doi.org/10.3390/met13010022 - 22 Dec 2022

Cited by 2 | Viewed by 1581

Abstract

Typically, the upper part of the roof a gymnasium building is a radial inverted triangular truss structure, and the lower part is a cable structure. They are connected by vertical braces to form a self-balancing structural system. The whole roof is supported by a complex, spatial, prestressed structure comprising tilted Y-shaped laced columns. Such structures rely on the integrity of the form and the application of prestress to achieve the best performance; it is in an extremely unstable state during construction. In order to study the mechanical behavior of the structure in this process, finite element software was used to analyze the cumulative slip of the structure and the construction process of cable tension, and the simulation values were compared to the actual monitoring values. The stress and deformation of the structure in different construction stages were investigated, and a reasonable structural unloading scheme was put forward. The study results showed that the stiffness of the long-span space truss suspended dome structure gradually increased with the structural integrity during construction, and the vertical deformation decreased from 25.4 mm to 19.26 mm with the construction process. The location and magnitude of the structure’s maximum internal force and maximum stress varied greatly compared to the static analysis when considering the construction process effects. Hence, conducting a construction process analysis is necessary. The construction technology of symmetrical rotating cumulative slip proposed in this paper has the advantages of a short construction duration, safe and stable construction process, etc., providing technical references for similar engineering constructions. Full article

(This article belongs to the Special Issue Experimental and Numerical Analysis of Composite Contribution Structures)

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17 pages, 8087 KiB

Open AccessArticle

Research on the Mechanical Behavior of a Steel–Concrete Composite Link Slab on a Simply Supported Girder Bridge

by Chengquan Wang, Jun Xie, Yonggang Shen and Jiqing Jiang

Metals 2022, 12(9), 1410; https://doi.org/10.3390/met12091410 - 26 Aug 2022

Cited by 3 | Viewed by 1804

Abstract

Water leakage and debris accumulation caused by the expansion joints in a bridge superstructure reduce the service life of the bridge and increase the maintenance costs. A link slab is an effective means to eliminate the expansion joints, providing a continuous deck system. However, the load-caused concrete cracking of the link slab also leads to problems associated with water leakage and rebar corrosion. In order to solve these problems, a new type of steel–concrete composite link slab (SCC-LS) was designed to continuously subject the bridge deck to a positive bending moment and surface concrete compression, which reduced the cracking damage in the link slab. This paper presents the mechanical performance results of the SCC-LS obtained using full-scale model tests. Furthermore, theoretical calculations and finite element (FE) models of the jointless bridge validated the performance based on the experimental results. The results of this study show that the SCC-LS can effectively solve the problem of concrete cracking on the surface of the bridge deck, which has theoretical reference significance and engineering application value for the structural design, maintenance and transformation of continuous simply supported bridge decks and the promotion of seamless bridges. Full article

(This article belongs to the Special Issue Experimental and Numerical Analysis of Composite Contribution Structures)

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21 pages, 8234 KiB

Open AccessArticle

Cyclic Testing on Seismic Behavior of Segmental Assembled CFST Bridge Pier with External Replaceable Energy Dissipator

by Chengquan Wang, Zheng Qu, Yonggang Shen, Boyan Ping and Jun Xie

Metals 2022, 12(7), 1156; https://doi.org/10.3390/met12071156 - 6 Jul 2022

Cited by 7 | Viewed by 1326

Abstract

In 2009–2022, to meet the requirement of resilient bridge pier structure (e.g., earthquake resistance, energy dissipation, isolation, resilience) for rapid repair after earthquakes and to improve the suitability of precast segmental bridge piers in medium- and high-intensity areas, a segmental assembled CFST bridge pier with external replaceable energy dissipator was proposed. Based on ABAQUS finite element analysis software, the finite element model of the CFST pier is established to analyze the force of the external replaceable energy dissipator, and the feasibility of the external energy dissipator is verified. Thereafter, two groups of segmentally assembled CFST pier model structures were tested for seismic behavior under reciprocating loading. Non-linear mechanical behaviors, such as restoring force-displacement hysteresis, loss of prestressing, and opening of the indirect joint of a segmented precast assembled pier, are analyzed. The results show that compared with a CFST pier with an energy dissipator, the lateral bearing capacity of the CFST pier with an external energy dissipator is increased by 32.8%, the energy dissipation capacity is also significantly improved, the opening size of joints between segments is reduced, and the overall damage of the CFST pier is concentrated on the energy dissipator, which is convenient for rapid disassembly and replacement. At the same time, the seismic performance of the CFST pier after replacing the energy dissipator is analyzed. The results show that the replacement of the external energy dissipator will not affect the seismic performance of a segmental assembled pier. Full article

(This article belongs to the Special Issue Experimental and Numerical Analysis of Composite Contribution Structures)

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Review

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24 pages, 1887 KiB

Open AccessReview

The Use of CFRP for Structural Reinforcement—Literature Review

by Aleksandra M. Pawlak, Tomasz Górny, Łukasz Dopierała and Piotr Paczos

Metals 2022, 12(9), 1470; https://doi.org/10.3390/met12091470 - 2 Sep 2022

Cited by 16 | Viewed by 5838

Abstract

Carbon fiber reinforced polymer (CFRP) composites are increasingly being used to strengthen structures and to retrofit existing structures. CFRP composites are used in various industries: construction, automotive, and many others. This literature review has shown that CFRP composites find numerous practical applications. Improving structures by reinforcing them with CFRP composite is an innovative approach in design. This review aims to explore the current state of the art in the types of structures that can be reinforced with CFRP, and modifications to the CFRP composite as an additional aspect to increase the strength of the reinforced structure. It has been shown that regardless of the type of reinforced material, the most critical element in this connection is the bonded joint. Proper surface preparation and the use of an appropriate adhesive are also important. Full article

(This article belongs to the Special Issue Experimental and Numerical Analysis of Composite Contribution Structures)

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