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Applied Sciences
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Design and Assessment of Timber Structures
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Design and Assessment of Timber Structures

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (20 June 2022) | Viewed by 5934

Special Issue Editors

Prof. Dr. Na Yang

E-Mail Website
Guest Editor
School of Civil Engineering, Beijing Jiaotong University, Beijing, China
Interests: building structure; civil engineering; rail transportation; road transport
Dr. Juan Wang

E-Mail Website
Co-Guest Editor
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
Interests: building structure; civil engineering

Special Issue Information

Dear Colleagues,

This Special Issue is devoted to the cutting-edge research regarding design and assessment in various modern or heritage timber structures.

Combined with increased requirements with regard to efficiency in design, construction economy and structural performance optimization, it is necessary to study advanced theoretical frameworks for the design and assessment of timber structures. Wood structure research, including studies regarding key technologies such as the design of new types of wood structure systems, assembly technology, the performance of composite structures, and other studies based on topics such as durability evaluation, insect prevention, anti-corrosion and the flame retardance of structural components, ancient wood structure protection, etc., would help the promotion of the sustainable development of wood structures. The intelligent construction of wood structures, including research regarding advanced technologies such as digitization, networking, intellectualization and greening, and the application of advanced technologies such as intelligent monitoring and online detection, image recognition and computer vision, would help to realize the intelligent construction and operation maintenance of wood structure. The performance evaluation and reiforcement of existing wooden structures are also worthy of attention. Monitoring technology and non-destructive testing provide key scientific and technological support for safety early warnings, passenger flow control, and the protection and repair of heritage timber structures. Uncertainties regarding material properties and components of wood buildings cause difficulties in their evaluation, which also need to be studied and solved.

In this Special Issue, we invite submissions on the new design methods of timber structure and the recent advances in structural assessment, including theoretical and experimental research, comprehensive reviews and survey papers. Articles promoting the transformation and application of scientific and technological achievements in timber structures are also welcome.

Prof. Dr. Na Yang
Dr. Juan Wang
Guest Editors

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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

  • fabricated timber construction
  • steel–wood/concrete–timber composite structure
  • heritage timber structure
  • reinforcement
  • assessment technology
  • advanced design method
  • intelligent construction and maintenance
  • defect detection
  • health monitoring system
  • uncertainty

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Published Papers (3 papers)

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Research

15 pages, 4120 KiB  
Article
Compressive Strength of Aged Timber Members in Traditional Building: Considering Differences in Heartwood and Sapwood
by Qingshan Yang, Chao Gao, Ke Liu, Yingming Zhu and Juan Wang
Appl. Sci. 2022, 12(15), 7719; https://doi.org/10.3390/app12157719 - 31 Jul 2022
Viewed by 1899
Abstract
This paper compares the parallel-to-grain compressive strengths of wood sample specimens with defects with those of the associated timber log samples. The Chinese fir (Cunninghamia lanceolata) was examined using the static test method. We analyzed the effects of sampling position along [...] Read more.
This paper compares the parallel-to-grain compressive strengths of wood sample specimens with defects with those of the associated timber log samples. The Chinese fir (Cunninghamia lanceolata) was examined using the static test method. We analyzed the effects of sampling position along the radial direction of the log sample and the age of timber on the parallel-to-grain compressive strength. We then developed time-dependent strength models of the heartwood (HW) and sapwood (SW). These models can be used to evaluate the strength of an aged timber member, using only the service duration, without taking material samples. The degradation of compressive strength over time was then analyzed using an existing multivariate time-dependent model that includes the stress level. The failure strength of the HW was found to be close to that of the SW when at low stress levels. The estimates of the compressive strength of timber members based on these models were better than those recommended by the Chinese National Standard. Full article
(This article belongs to the Special Issue Design and Assessment of Timber Structures)
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17 pages, 4504 KiB  
Article
Research on Interface Slip Characteristics of Heritage Composite Timber Columns under Inclined Deformation
by Peng Chang, Qiuge Feng, Nannan Wu and Na Yang
Appl. Sci. 2022, 12(14), 7351; https://doi.org/10.3390/app12147351 - 21 Jul 2022
Viewed by 1629
Abstract
In order to study the mechanical performance and friction slip mechanism of the interface of a composite timber column under inclined deformation, the unilateral contact mechanical model of an ancient composite timber column under inclined deformation is proposed in this paper. According to [...] Read more.
In order to study the mechanical performance and friction slip mechanism of the interface of a composite timber column under inclined deformation, the unilateral contact mechanical model of an ancient composite timber column under inclined deformation is proposed in this paper. According to the limit of the inclination angle of slip point and the limit of the inclination angle of slip surface, the failure modes of the combination’s interface can be divided into three stages: the fully sticky stage, the partially sticky stage and the sliding stage. The theoretical results of the sliding displacement and shear stiffness of the combination’s interface under the effect of iron hoops were obtained by using the elastic mechanics method. Based on the shear sliding test of a composite timber column’s interface under the effect of iron hoops, the influences of different parameters on the shear sliding performance of the combination’s interface were investigated. The test results show that the number and the spacing of the iron hoops and the inclination angle of the interface are important factors affecting the shear strength of the combination’s interface. The shear strength of the interface increased with the increase in the number of iron hoops and the inclination angle of the interface. Since hoop spacing that is too large or too small cannot effectively improve the shear capacity of the interface, there is an optimal value for the hoop spacing. Full article
(This article belongs to the Special Issue Design and Assessment of Timber Structures)
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25 pages, 11820 KiB  
Article
Mechanical Behaviour and Failure Mode Analysis of Penetrated Mortise–Tenon Joint with Neighbouring Gaps Based on Full-Scale Experiments
by Juan Wang, Jun-Xiao He, Yu-Jing Yuan and Na Yang
Appl. Sci. 2022, 12(14), 7164; https://doi.org/10.3390/app12147164 - 16 Jul 2022
Cited by 2 | Viewed by 1682
Abstract
The penetrated mortise–tenon joint (PMT) connecting column and beam in traditional timber structures often has neighbouring gaps between connected structural members due to initial manufacture errors and damage accumulated over years. Influences of the neighbouring gaps on the mechanical properties of the PMT [...] Read more.
The penetrated mortise–tenon joint (PMT) connecting column and beam in traditional timber structures often has neighbouring gaps between connected structural members due to initial manufacture errors and damage accumulated over years. Influences of the neighbouring gaps on the mechanical properties of the PMT joint have been analysed based on a full-scale experimental study. Four typical gap values are determined according to the probability analysis of on-site survey results of a Chinese traditional timber structure. Four full-scale models of PMT joints with varied gap values have been established. Failure modes and deformation characteristics have been studied by quasi-static tests. Results show that the failure modes are the tearing of wood fiber along the grain at variable cross-sections. The loose penetrated mortise–tenon (LPMT) joints all have high deformability. The slip distance of tenon grows as the gap value increases. Limit angles of the loose joints lag with the increasing degree of loosening. The bending bearing capacity and rotational stiffness of LPMT joints decrease as the gap value increases, and the limitation value of the gap is analysed. The resisting capacities of LJ-2, LJ-3 and LJ-4 are much lower than that of LJ-1. The changing ratios are 18.5%, 55.4% and 70.4%, respectively. A three-parameter power function model of the mortise–tenon joint with consideration of the neighboring gap is presented. Research results provide important references on the condition assessments of the existing traditional timber structures. Full article
(This article belongs to the Special Issue Design and Assessment of Timber Structures)
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