Experimental Full-Scale Studies of Wooden Trusses on Metal Serrated Plates

Жидков, К. Е.; Зверев, В. В.; Капырин, Н. В.

doi:10.36622/vstu.2021.31.4.008

Stroitelʹnaâ Mehanika I Konstrukcii

2021

DOI: 10.36622/vstu.2021.31.4.008

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Experimental Full-Scale Studies of Wooden Trusses on Metal Serrated Plates

К. Е. Жидков¹,

В. В. Зверев²,

Н. В. Капырин³

Abstract: Описывается методика проведения натурных испытаний деревянных ферм на металлических зубчатых пластинах. Приводятся параметры испытанных стропильных ферм, схемы загружения конструкций. Получены результаты экспериментальных исследований при внеузловом приложении нагрузки. Определены характерные места возможного разрушения элементов. На основании результатов проведенных испытаний даны рекомендации по проектированию деревянных ферм на металлических зубчатых пластинах. … Show more

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Rational structural solutions for triangular trusses

Repin,

Lukina,

Usov

2023

Struct. Mech. of Eng. Const. and Build

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Wooden rafter structures have undoubted advantages, which determine their wide application. The object of the study is triangular rafter structures. The purpose of the research is to find the dependence of force values in the elements of the studied structure on the magnitude of its lifting boom. The calculation of a triangular truss using the Maxwell - Cremona diagram is presented. The efficiency of the proposed method was estimated on the basis of a study of the structure of a wooden truss of the “scissors” type. The following pattern has been established: the change in the coordinates of the points (abscissas) of the force diagram is inversely proportional to the change in f . It is determined the area of rational values of the lift (roof slope) at which the values of internal forces tend to a minimum. It was revealed that the values of force increments in the truss elements at each step increase from 27% to 2 times when the roof slope de-creases. Based on the graphical analysis of the obtained data the range of effective values of the roof slope at which the forces in the elements of the truss take minimum values was found. Using a graphic method of determining the forces, it is possible to check variants of the roof slope in the search for a rational solution of the “scissor” type truss structure. It follows that the proposed method contributes to the choice of the most economical structural solutions.

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Rational structural solutions for triangular trusses

Repin,

Lukina,

Usov

2023

Struct. Mech. of Eng. Const. and Build

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Parameterization of Maxwell - Cremona Diagram for Determining Forces in Elements of a Scissors Truss

Repin,

Lukina,

Strekalkin

2024

Struct. Mech. of Eng. Const. and Build

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An analysis of changing patterns of the values of member forces in a scissors truss, depending on the position of connections of its lower chords to the upper chords, is performed. Exploring effective truss structure designs in terms of balanced combination of maximum strength and minimum weight is a sustainable approach to a more rational use of building materials and the development of green construction. This determines the relevance of this area of research. The analysis of configurations of the truss under study was performed using the parameterized Maxwell - Cremona diagram. Such diagram is a visually informative tool in presenting the calculation results and it fully reflects the relationship between the member forces and the parameters of the structure. The research process was performed using the MS Excel spreadsheet editor. This eventually developed into a software tool for finding effective scissors truss designs, which has full potential for further improvement and development. Thus, the functionality of the tool can be easily expanded to designing scissors trusses made of various structural materials, as well as with various crosssectional shapes of its elements. The proposed approach to the calculation of such structures can serve as a basis for parameterization of trusses with other types of web.

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Experimental Full-Scale Studies of Wooden Trusses on Metal Serrated Plates

Cited by 2 publications

References 0 publications

Rational structural solutions for triangular trusses

Rational structural solutions for triangular trusses

Parameterization of Maxwell - Cremona Diagram for Determining Forces in Elements of a Scissors Truss

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