Studies on Historical Development of Rational Building Design Theory and Pratice Trends Racionali konstrukcij projektavimo teorijos ir praktikos istorin s raidos bruo tyrimai

The basic problem that may be solved in designing of building is an ensuring of building liveliness. For achievement of this goal certain demands, terms, claims, etc. may be appreciated or estimated. There was a need for a long historical way of elaborating practical means for the achievement of these goals. Some time later this practical experience was formulated by grafo-analytic methods. But these methods as well as practical means are not possible to account for a specific for variety of characteristics related to preconditions, demands and initial data set to be used for building design. A number of them are contradictory by their nature. Consequently, the neglect of most influential contradictions set up a premise to depreciate results and partly, methods used for designing. Most of all, the significant part of contradictions and characteristics used for design of structures or related to design process in any other form have a probabilistic character. So, imitation models, used for design, may be adequate to these peculiarities as well as it is possible. With this intention there can be adapted methods based on minimax principle. Some directions of scientific researches for this goal are discussed in relation to rational building structures design historic evolution. It can be useful also from complexity point of view on account of using minimax based methods in building economy, technology, etc. Article in Lithuanian Statybos istorijoje ry kus siekis, kad statini konstrukcijos būt ir architektūri kai i rai kingos, ir racionalios s naud po iūriu. Did ioji dalis tam reikaling ini praeityje buvo gytos patirties keliu – bandym ir klaid “ metodu. Tam prireik labai dideli laiko, materialini i tekli ir kit vertybi s naud . Be to, med iag ir statybos s lyg vairov tur jo lemiamos takos racionali konstrukcij formoms ir parametrams. Galiausiai buvo sudaryti grafoanalitini taisykli rinkiniai, kuriais statini projektuotojai naudojosi ilgus metus. Tuo pat metu buvo pl tojami ir fizika (mechanika) paremti metodai. XX am iaus antroje pus je ie metodai pasiek kokybi kai nauj raidos faz . Buvo susintetintos ir apibendrintos med iagotyros, mechanikos ir matematikos teikiamos inios. Kompiuterin s technikos patobul jimas atv r naujas galimybes panaudoti ias inias. Tod l racionalioms konstrukcijoms projektuoti buvo galima adaptuoti tiesinio programavimo metodus. Pl tojant ias galimybes ir panaudojant irimo mechanikos, patikimumo ir ilgaam i kumo poveiki dyd io ir j tikimybinio charakterio tyrimo bei kitus pasiekimus, tiesinio progra