Mechanical performance of glulam beam-to-column connections with coach screws as fasteners

He, Minjuan; Li, Minmin; Li, Zheng; He, Guirong; Sun, Yuan

doi:10.1007/s43452-021-00207-5

Cited by 6 publications

(3 citation statements)

References 31 publications

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“…A similar observation was made by the structural engineer (E1) regarding the challenges associated with nontraditional design approaches to reduce the carbon footprint such as the limited use of concrete structures in the project, as well as vertical capacities that include the use of fiberglass composite posts instead of using traditional materials like steel and concrete, and lateral capacities that use bracing systems to enhance lateral stability or hybrid systems such as glulam beams and timber for lateral bracing [36,37]. This lack of familiarity with advanced design strategies and technologies affects the delivery of design drawings in addition to several trade-offs that increase the carbon footprint and oversize the structural beams.…”

Section: Knowledge Gap and Experience Barriersmentioning

confidence: 56%

Challenges That Impact the Development of a Multi-Generational Low-Carbon Passive House in a Small City

Wehbi,

Messadi

2024

Designs

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The impact of the building and construction sector on climate change is becoming more important and recognized. Multiple initiatives around the globe have been utilized to design and develop residential structures, aiming to reduce energy consumption and carbon emissions; yet, there are several barriers to effective construction processes. This research outlines the gaps and barriers encountered by key stakeholders that were engaged during the preconstruction phase of a three-story multi-generational low-impact Passive House in Fayetteville, Arkansas. Through direct observation and open-ended interviews, the primary data are collected, and secondary data from a comprehensive literature review are detailed to capture the challenges faced during different phases of the implementation of sustainable residential dwellings. This study highlights the limited knowledge and experience in sustainable building design as a common barrier among participants along with the insufficiency of the regulatory framework governing adopted building codes in Arkansas, in facilitating sustainable building design implementation. These challenges, among others, are then thoroughly examined, and recommendations to address them are described.

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Section: Knowledge Gap and Experience Barriersmentioning

confidence: 56%

Challenges That Impact the Development of a Multi-Generational Low-Carbon Passive House in a Small City

Wehbi,

Messadi

2024

Designs

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“…The first approach is to reinforce the materials to improve the ductility. For example, the self-tapping screws (STSs), [12,13] the self-drilling dowels, [14] as well as the coach screws [15] were used to strengthen the timber perpendicular to grain to avoid early splitting. Besides, splitting could also be postponed by bonding the glulam elements with the reconstructed bamboo along the vertical direction.…”

Section: Noveltymentioning

confidence: 99%

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Shu

Ning

Chen

et al. 2022

Earthq Engng Struct Dyn

Self Cite

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Currently, there is no "timber moment frame structural system," as the basic glulam beam-to-column connections (usually represented by the bolted connections with slotted-in steel plates) offer limited rotational stiffness such that they are usually treated as pin connections. This paper proposes an innovative type of moment-resisting glulam beam-to-column connection reinforced by long steel rods with screwheads (LSRSs) and long self-tapping screws (STSs). The motivation is to provide a stiff yet resilient beam-to-column connection that could possibly be used for the mid-rise timber moment frame structural system without the need of shear walls or braces. Six specimens with different diameters of LSRSs were designed and experimentally tested to explore their rotational stiffness, moment-resisting capacities, hysteretic moment-rotation responses, and the associated failure modes. Results indicated that the proposed connection could provide not only a satisfying moment resistance, but also the energy dissipation and fast repairability that is related with structural seismic resilience. The design procedures and recommendations for the proposed connection were also provided based on the tested results. The presented experimental study serves as a handy reference for future designs and applications of the proposed connection in practical engineering projects.

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“…Along with the promotion of new processes, new technologies, and the extensive use of new materials, much of the current research is focused on analyzing the performance of mechanical joining technology. For example, He et al [9] investigated the mechanical properties of glued laminated timber beam-column connections with screws as fasteners. Lee et al [10] investigated the mechanical properties of PFRP materials when used for single-bolt connections.…”

Section: Introductionmentioning

confidence: 99%

Innovation technology opportunity identification of civil aircraft mechanical connections based on generative topographic mapping

Feng,

Zhang,

Wang

et al. 2023

PLoS ONE

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In order to advance civil aircraft manufacturing to higher levels, there is an urgent need to identify technological innovation opportunities to help new technology development. This paper first analyses the current state of the research field and determines the topic. It preprocesses papers and patents within the research topic to obtain a base database. Then, the database is analyzed using the LDA (Latent Dirichlet Analysis) cluster analysis method. The TF-IDF (Term Frequency-Inverse Document Frequency) algorithm processes the data to obtain critical technical words. The abstracts of patents and papers are processed to construct a binary-based vector of technical keywords. The papers and patents are visualized in a two-dimensional space technology map by generative topographic mapping (GTM) to create a technology map to identify technology blank dots. The combination of technologies characterized by each technology blank dot is obtained by GTM inverse mapping. Finally, technology opportunities with a high probability of development are identified to achieve innovation opportunity identification. It also provides countermeasures for the research institution, enterprise, sector, and industry. After research and analysis, the future in the mechanical connection technology of civil aircraft is necessary to strengthen basic technology development and improve the study of intelligence, integration, and flexibility. Technology such as sensors and lasers can improve the precision and efficiency of mechanical connections.

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Mechanical performance of glulam beam-to-column connections with coach screws as fasteners

Cited by 6 publications

References 31 publications

Challenges That Impact the Development of a Multi-Generational Low-Carbon Passive House in a Small City

Challenges That Impact the Development of a Multi-Generational Low-Carbon Passive House in a Small City

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Innovation technology opportunity identification of civil aircraft mechanical connections based on generative topographic mapping

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