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Symmetry
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Recent Advances in Computational and Structural Engineering
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Recent Advances in Computational and Structural Engineering

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Computer".

Deadline for manuscript submissions: closed (15 March 2022) | Viewed by 16434

Special Issue Editor

Prof. Dr. Massimo Latour

E-Mail Website
Guest Editor
Department of Civil Engineering / DICIV, University of Salerno, 84084 Fisciano, SA, Italy
Interests: seismic design; innovative materials; metal structures; advanced design; FE tools
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, civil and structural engineering is also centred on the assessment of the behaviour of engineering structures through the application of computational methods and the adoption of FE tools. Many research studies have been carried out in the last few decades and plenty of research work has been devoted to the study of details or entire structures through complex computational methods.

This Special Issue in Symmetry wants to report critical findings, the advances and the applications in all structural engineering fields and, most of all, cutting-edge methodologies applied to innovative structural typologies.

We solicit contributions covering a wide range of topics, including the following: seismic behaviour of new structures designed with traditional and innovative methodologies; retrofit of existing buildings through experimental techniques and related numerical parametric studies; numerical methods for risk assessment; guidelines for the design of structural details verified through FEM; numerical studies of structures with reliability assessment methods; FEM studies of components or structures with advanced numerical tools.

Submit your paper and select the Journal “Symmetry” and the Special Issue “Recent Advances in Computational and Structural Engineering” via: MDPI submission system. Our papers will be published on a rolling basis and we will be pleased to receive your submission once you have finished it.

Prof. Massimo Latour
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. Symmetry 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 2400 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

  • Structures
  • Innovative
  • Risk
  • Existing Buildings
  • Seismic Engineering
  • Retrofit
  • Numerical methods
  • Reliability
  • FEM
  • Structural Components

Published Papers (6 papers)

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Research

19 pages, 2656 KiB  
Article
Axisymmetric Large Deflection Elastic Analysis of Hollow Annular Membranes under Transverse Uniform Loading
by Jun-Yi Sun, Qi Zhang, Xue Li and Xiao-Ting He
Symmetry 2021, 13(10), 1770; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13101770 - 23 Sep 2021
Cited by 7 | Viewed by 1921
Abstract
The anticipated use of a hollow linearly elastic annular membrane for designing elastic shells has provided an impetus for this paper to investigate the large deflection geometrically nonlinear phenomena of such a hollow linearly elastic annular membrane under transverse uniform loads. The so-called [...] Read more.
The anticipated use of a hollow linearly elastic annular membrane for designing elastic shells has provided an impetus for this paper to investigate the large deflection geometrically nonlinear phenomena of such a hollow linearly elastic annular membrane under transverse uniform loads. The so-called hollow annular membranes differ from the traditional annular membranes available in the literature only in that the former has the inner edge attached to a movable but weightless rigid concentric circular ring while the latter has the inner edge attached to a movable but weightless rigid concentric circular plate. The hollow annular membranes remove the transverse uniform loads distributed on “circular plate” due to the use of “circular ring” and result in a reduction in elastic response. In this paper, the large deflection geometrically nonlinear problem of an initially flat, peripherally fixed, linearly elastic, transversely uniformly loaded hollow annular membrane is formulated, the problem formulated is solved by using power series method, and its closed-form solution is presented for the first time. The convergence and effectiveness of the closed-form solution presented are investigated numerically. A comparison between closed-form solutions for hollow and traditional annular membranes under the same conditions is conducted, to reveal the difference in elastic response, as well as the influence of different closed-form solutions on the anticipated use for designing elastic shells. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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22 pages, 9624 KiB  
Article
Experimental Research on the Flexural Performance of RC Rectangular Beams Strengthened by Reverse-Arch Method
by Tao Yu, Quansheng Sun, Chunwei Li and Yancheng Liu
Symmetry 2021, 13(9), 1666; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13091666 - 09 Sep 2021
Cited by 2 | Viewed by 1936
Abstract
Carbon fiber-reinforced polymer (CFRP) reinforcement technology has been widely used in the reinforcement of reinforced concrete (RC) beams. At this stage, high prestressed CFRP board reinforcement is often used in actual reinforcement. However, most reinforced bridges are designed for a long time, and [...] Read more.
Carbon fiber-reinforced polymer (CFRP) reinforcement technology has been widely used in the reinforcement of reinforced concrete (RC) beams. At this stage, high prestressed CFRP board reinforcement is often used in actual reinforcement. However, most reinforced bridges are designed for a long time, and the design value of the protective layer is low, and it is impossible to achieve a large prestressed tension. Therefore, this paper proposes the reverse-arch method to paste the CFRP board and apply low prestress to strengthen the symmetrical RC beam. Through the three-point forward loading test, the cracking load, ultimate load, crack width, mid-span deflection, strain and failure mode of a reverse-arch method-pasted CFRP board-reinforced beam, a directly pasted CFRP board-reinforced beam and an unreinforced beam are compared. The results show that the load-bearing capacity and stiffness of the test beam can be improved by pasting CFRP plates with anti-arch method, but the ductility of the test beam is reduced. Compared with the unreinforced beam, the maximum cracking load and ultimate load are increased by 56% and 63% respectively. The reverse-arch method can produce low prestress, improve the stiffness and bearing capacity of members, and has a good prospect of engineering application. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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18 pages, 2085 KiB  
Article
Rockburst Hazard Prediction in Underground Projects Using Two Intelligent Classification Techniques: A Comparative Study
by Mahmood Ahmad, Ji-Lei Hu, Marijana Hadzima-Nyarko, Feezan Ahmad, Xiao-Wei Tang, Zia Ur Rahman, Ahsan Nawaz and Muhammad Abrar
Symmetry 2021, 13(4), 632; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13040632 - 09 Apr 2021
Cited by 29 | Viewed by 2418
Abstract
Rockburst is a complex phenomenon of dynamic instability in the underground excavation of rock. Owing to the complex and unclear rockburst mechanism, it is difficult to accurately predict and reasonably assess the rockburst potential. With the increasing availability of case histories from rock [...] Read more.
Rockburst is a complex phenomenon of dynamic instability in the underground excavation of rock. Owing to the complex and unclear rockburst mechanism, it is difficult to accurately predict and reasonably assess the rockburst potential. With the increasing availability of case histories from rock engineering and the advancement of data science, the data mining algorithms provide a good way to predict complex phenomena, like rockburst potential. This paper investigates the potential of J48 and random tree algorithms to predict the rockburst classification ranks using 165 cases, with four parameters, namely maximum tangential stress of surrounding rock, uniaxial compressive strength, uniaxial tensile strength, and strain energy storage index. A comparison of developed models’ performances reveals that the random tree gives more reliable predictions than J48 and other empirical models (Russenes criterion, rock brittleness coefficient criterion, and artificial neural networks). Similar comparisons with convolutional neural network resulted at par performance in modeling the rockburst hazard data. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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12 pages, 5661 KiB  
Article
Anti-Plane Dynamics Analysis of a Circular Lined Tunnel in the Ground under Covering Layer
by Hui Qi, Fuqing Chu, Yang Zhang, Guohui Wu and Jing Guo
Symmetry 2021, 13(2), 246; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13020246 - 01 Feb 2021
Cited by 2 | Viewed by 1638
Abstract
Wave diffusion in the composite soil layer with the lined tunnel structure is often encountered in the field of seismic engineering. The wave function expansion method is an effective method for solving the wave diffusion problem. In this paper, the wave function expansion [...] Read more.
Wave diffusion in the composite soil layer with the lined tunnel structure is often encountered in the field of seismic engineering. The wave function expansion method is an effective method for solving the wave diffusion problem. In this paper, the wave function expansion method is used to present a semi-analytical solution to the shear horizontal (SH) wave scattering problem of a circular lined tunnel under the covering soil layer. Considering the existence of the covering soil layer, the great arc assumption (that is, the curved boundary instead of the straight-line boundary) is used to construct the wavefield in the composite soil layer. Based on the wave field and boundary conditions, an infinite linear equation system is established by adding the application of complex variable functions. The finite term is intercepted and solved, and the accuracy of the solution is analyzed. Although truncation is inevitable, due to the Bessel function has better convergence, a smaller truncation coefficient can achieve mechanical accuracy. Based on numerical examples, the influence of SH wave incident frequency, soil parameters, and lining thickness on the dynamic stress concentration factor of lining is analyzed. Compared with the SH wave scattering problem by lining in a single medium half-space, due to the existence of the cover layer and the influence of its stiffness, the dynamic stress of the lining can be increased or inhibited. In addition, the lining thickness has obvious different effects on the dynamic stress concentration coefficient of the inner and outer walls of different materials. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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23 pages, 10583 KiB  
Article
Seismic Behavior of Moment-Resisting Frames with Conventional and Innovative Connections
by Sabatino Di Benedetto, Antonella Bianca Francavilla, Massimo Latour, Giovanni Ferrante Cavallaro, Vincenzo Piluso and Gianvittorio Rizzano
Symmetry 2020, 12(12), 2091; https://doi.org/10.3390/sym12122091 - 16 Dec 2020
Cited by 10 | Viewed by 3979
Abstract
In the last few decades, increasing efforts have been devoted to the development of beam-to-column connections able to accommodate the local ductility demand dissipating, contemporaneously, the seismic input energy. Among the typologies proposed, the so-called RBS (Reduced Beam Section) has gained wide acceptance [...] Read more.
In the last few decades, increasing efforts have been devoted to the development of beam-to-column connections able to accommodate the local ductility demand dissipating, contemporaneously, the seismic input energy. Among the typologies proposed, the so-called RBS (Reduced Beam Section) has gained wide acceptance in the construction market, leading to easy-to-construct and cost-effective solutions. As an alternative, new proposals based on the inclusion of friction devices in beam-to-column joints have recently been made. Such a practice has the merit, in case of destructive events, of exhibiting wide and stable hysteretic cycles concentrating damage in elements that undergo only minor yielding. Both RBS and friction joints have been widely studied, carrying out experimental tests on sub-assemblies investigating their cyclic rotational response. Nevertheless, the available experimental results on full-scale structures equipped with these connections are still quite limited. This is the reason why two experimental campaigns aimed at performing pseudo-dynamic testing of a full-scale two-storey steel building equipped with RBS and friction connections have been planned at the STRENGTH (STRuctural ENGineering Test Hall) Laboratory of the University of Salerno. The first experimental campaign with the structure equipped with RBSs has already been performed; the connections showed higher resistance than expected, and exhibited brittle fracture due to cyclic fatigue. The second campaign has not yet been carried out, but in this paper the blind analysis of the supposed behavior is reported. It is expected that the friction joints allow to dissipate the seismic input energy without any structural damage in the members, but only through the friction pads of the devices, which can be easily replaced at the end of a severe seismic event. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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16 pages, 698 KiB  
Article
Evolution of EC8 Seismic Design Rules for X Concentric Bracings
by Alessia Campiche and Silvia Costanzo
Symmetry 2020, 12(11), 1807; https://0-doi-org.brum.beds.ac.uk/10.3390/sym12111807 - 31 Oct 2020
Cited by 13 | Viewed by 2894
Abstract
Eurocodes are currently under revision within a six-year program by CEN/TC 250. In this framework, concentric bracings, particularly in cross configuration, have been largely debated; indeed, several criticisms affect the seismic design procedure currently codified within Eurocode 8, entailing significant design efforts and [...] Read more.
Eurocodes are currently under revision within a six-year program by CEN/TC 250. In this framework, concentric bracings, particularly in cross configuration, have been largely debated; indeed, several criticisms affect the seismic design procedure currently codified within Eurocode 8, entailing significant design efforts and leading to massive and non-economical structural systems, even characterized by poor seismic behavior. The efforts of SC8 have been aimed at improving the codified seismic design criteria for concentrically braced frames, by providing requirements and detailing rules conceived to simplify the design process and to improve the seismic performance. The current paper provides recent advances in the field of computational and structural engineering focusing on symmetric X concentrically bracings in seismic area, outlining the evolution of Eurocode 8 (EC8) seismic design rules, by examining the following aspects: (i) ductility class and behavior factor, (ii) analysis and modelling aspects, (iii) design of dissipative members; (iv) design of non-dissipative zones; (v) brace-to-frame connections. Full article
(This article belongs to the Special Issue Recent Advances in Computational and Structural Engineering)
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