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Semi rigid mounting joints of glued laminated timber elements are connections that are fully assembled on construction site and capable to handle bending moments, axial and shear forces. The need for new type of semi rigid timber elements’ connection is obvious. The manufacturing possibilities of glued laminated timber elements’ are wide: straight element's length may extend up to 40 m or curved axis elements with dimensions of up to 10 meters in height, therefore, manufacturers, erectors and others face with transportation problems of non-standard, oversized elements. Semi-rigid mounting joints are used to solve this problem. In factory non-standard, oversized, glued, laminated timber elements are cut into standard transportation dimensions and fully mounted into integral element on construction site, using semi rigid mounting joints. In this article semi-rigid, glued, laminated timber elements’ joints which are used as beam to beam, beam to column and column to foundation connections are analysed. Also the main design principles of semi-rigid joints are discussed. The new type of semi rigid beam to beam connection is proposed and experimentally analysed. The experimentally and theoretically analysed connection is composed of welded steel details which are anchored into timber element. The main experiment is four point bending; the analysed connection is in the middle of the span. The beam's span is 3.20 m; the dimensions of the timber element's cross section are: width 200 mm; height 400 mm; mounting bolts are M16. Glued laminated timber strength class is GL24h. The tight contact between timber element and steel detail is created by anchoring steel detail's T shape part into timber element. The initial movement between timber element and steel detail is eliminated using fillers. Two types of fillers are used in these experiments: two component polyurethane and cement based filler with polymer fibres. Two joints with different fillers are tested in laboratory experiments. Bending bearing capacity and stiffness (displacements) of the joints’ are determined in laboratory. Experimental bearing capacities are compared with theoretical calculations according to European (EC5) and Lithuanian timber structures design codes. Conclusions and recommendations are presented for further experiments and computer simulations. Santrauka Straipsnyje analizuojami pusiau standūs montuojamieji klijuotosios medienos konstrukcijų mazgai, kurie naudojami elementams sujungti per ilgį, rėmų kampinėms jungtims tarp kolonos ir sijos bei jungtims tarp kolonos ir pamato. Aptariami pagrindiniai pusiau standžių montuojamųjų medinių konstrukcijų mazgų konstravimo principai. Pasiūlytas ir eksperimentiškai tirtas per ilgį sujungtų lenkiamųjų klijuotosios medienos sijos elementų mazgas. Mazgas įrengiamas naudojant plienines detales, suvirintas iš lakštinio plieno, kurios inkaruojamos medienos elementuose. Kontaktas tarp medienos ir metalo užtikrinamas ir pradinis mazgo slankumas panaikinamas užpildant tarpus tarp medienos ir metalo užpildu. Pasirinkti du skirtingo pagrindo (sudėties) užpildai: dviejų komponentų poliuretano ir cementinis, kurio sudėtyje yra polimerinių plaušų. Nustatytas cementinio užpildo lekiamasis ir gniuždomasis stipriai. Eksperimentinės jungčių laikomosios galios palyginamos su teoriniais skaičiavimais pagal Lietuvos ir Europos medinių konstrukcijų projektavimo normas. Pateikiamos išvados ir rekomendacijos tolesniems tyrimams. Reikšminiai žodžiai:klijuotosios medienos elementų jungtys,elementų sujungimas per ilgį,sijos elementų tarpusavio jungtys,klijuotosios medienos rėmai

The paper reviews the importance of the evaluation of actual Joints’ behavior during the designing and manufacturing of frame constructions. In this paper an overview of methods for evaluation of Joints’ characteristics is presented. The component method, used in Eurocode 3 is introduced in more detail. In addition, a Short overview of beam-to-columns joints’ components is made.Beam-to-column joint can be split into two components: the web panel and the connection zone. In most cases, the column web panel is a highly significant part that affects joint's characteristics. Internal forces of the joint can deform the column web panel and dismantle it. Therefore, the column web panel can not only affect the initial rotational stiffness of the joint, but also the design moment resistance.The article presents the results of the three types of joints’ calculations that illustrate the influence of the behavior of the column web panel for the joint characteristics. Calculations were performed with same cross-sections and steel grade of the elements. The difference is that one joint's column web panel was stiffened, while the other one was not.Welded beam-to-column joint (case 1) with transverse stiffeners becomes more rigid, because after using the stiffeners, no components that could be deformed remain. When the web panel was only stiffened with transverse stiffeners, the design's moment resistance increased by 28%, when diagonal stiffeners were added, design's moment resistance increased by 64%.If the weakest component of the joint is the column web panel in shear, compression or tension, design resistance of these components can be increased using stiffeners. Then the design moment resistance of the joint increases as well. In the performed calculations (cases 1, 2 and 3), the transverse stiffeners increased the design moment resistance by 28, 30 and 13% respectively, while the use of transverse and diagonal stiffeners together increased the design moment resistance by 64, 67 and 16% respectively.When components of connection area are sufficiently rigid (case 2; bolts M24; end-plate thickness is 20mm; two rows of bolts are in tension), using column web stiffeners causes the beam-to-column joint to become rigid. In this case, the use of transverse stiffeners increased initial torsional stiffness by 330%. In case 3, when the connection components were relatively rigid (bolt M24; end-plate thickness is 20 mm), using stiffeners the initial rotational stiffness has increased by 153%, but due to its geometry the joint is not stiff enough to satisfy the requirements for a rigid joint with it's behavior. In addition, the transverse and diagonal stiffeners for joints in cases 2 and 3 were no longer increasing the initial rotational stiffness.When components of connection area are more flexible (cases 2 and 3; Bots are M16 and the end-plate thickness is 10 mm), using stiffeners can increase the initial rotational stiffness of the joint 2–3 times, but the joint won't be stiff enough to be considered rigid. Article in Lithuanian. Kolonos sienelės elgsenos poveikis sijos-kolonos mazgo lenkiamosios galios ir standžio rodikliams Santrauka.Straipsnyje apžvelgta tikrosios mazgų elgsenos įvertinimo svarba projektuojant ir gaminant plienines rėmines konstrukcijas, nagrinėjami mazgų rodiklių nustatymo metodai, plačiau pristatytas Eurokode 3 taikomas komponentų metodas ir aptarti sijos-kolonos mazgų komponentai. Ypatingas dėmesys skirtas vienam mazgo komponentui – kolonos sienelei. Tirta kolonos sienelės elgsenos svarba ir poveikis viso mazgo rodikliams. Aptartos įvairios konstrukcinės galimybės kolonos sienelei sustandinti. Pateikti kolonos sienelės poveikį mazgo standžiui ir lenkiamajai galiai iliustruojantys skaičiavimo rezultatai. Skaičiuota nesustandinus kolonos sienelės ir ją sustandinus. Gautieji rezultatai patvirtina lauktą rezultatą, kad sienelė – labai svarbus mazgo komponentas, o nuo jos elgsenos gali priklausyti mazgo sukamasis standis ir laikomoji galia. Kolonos sienelės plokštę sustandinus, visais skaičiuotais atvejais mazgo standis ir lenkiamoji galia padidėjo. Reikšminiai žodžiai:plieninės konstrukcijos,pusiau standūs mazgai,plieninės kolonos sienelė,komponentų metodas,standis,laikomoji galia,lenkiamoji galia,Eurokodas 3

Mokomojoje knygoje pateikiama plonasienių, šaltai suformuotų elementų ir lakštų skaičiavimo teorija ir jų projektavimo metodika pagal standartą Eurokodas 3. Knygoje pateikiamas plonasienių elementų ir lakštų apibūdinimas, jų skaičiavimo specifika, kuri atsiranda dėl elemento lakštų didelio pločio ir storio santykio. Didelis dėmesys skiriamas plonasienių elementų stabilumo supratimui ir skaičiavimui, kadangi tai didžiąja dalimi lemia šių elementų sėkmingą projektavimą. Knygoje taip pat pateikiamas trumpas aprašymas šaltai suformuotų elementų ir lakštų gamybos būdų bei jų taikymas pastatų ir statinių plieninių konstrukcijų projektavimui. Mokomoji knyga skirta statybos inžineriją studijuojantiems magistrantams ir besispecializuojantiems modernių plieninių konstrukcijų projektavimo srityje. Knyga taip pat naudinga praktikams konstruktoriams.

The operation of industrial, construction and agricultural enterprises as well as work efficiency and public opinion largely depends on reliability and effective performance of transport and telecommunication. The qualified specialists of Lithuanian universities educated in transport engineering and telecommunication engineering are highly appraised in the European Union countries and others countries. The present paper deals with the higher education system of Lithuania, also describes a system of joint admission to Lithuanian higher schools, which is being already used for several years in this country. The problems of selecting applicants to the Lithuanian universities and the level of knowledge of the applicants admitted to study the programmes in transport engineering and telecommunication engineering, and other study programmes are also discussed in the present paper.