| 摘要 |
The contemporary society has a big variety of functional requirements. Subsequen tly, the construction is called to accomplish structural spans of several ranges. The bea ms provide the spans and represent the first technological and financial problem of the constru ction. The bending moment of a beam is proportional to the second power of the span. It means, the magnification of the bending moment is exponential in relation to the increase o f the span. In case of a span increase, the bending resistance of the beam must follow the magnifica tion of the bending moment. The bending resistance must magnify exponentially too. That is w hy, now, the beams of different span ranges have different constitutions -full-web beams: re ctangular beam, I-beam, box-girder etc.; open-web beams: Virendel-type, trussed beam, space fram es etc.. The construction provides a high variety of beam types, it means - a high technologi cal variety. In case of a serial production, the unit price decreases proportionally to the size of the series, it means - proportionally to the technological homogeneity. Otherwise, the unit pri ce increases proportionally of the technological variety. The general contemporary situation could be described as a high technological va riety, about its maximum, of the execution of the beams, a substantial organizational difficultie s in the building sites, an aesthetic noncompatibility among the beams and a high price per constr uctional volumetric unit. The present invention offers a modular combinatorial resolution of the problem. The modulation allows to subdivide the beam to modules smaller than its entire size. The smalle r module is more flexible. The flexibility allows to endow the module with combinatorial qualitie s. It is possible, combining the same module, to increase the span of the beam and to increase its deepness keeping up the concentration of the material in the beam's section extremities. The concentration in the section extremities means keeping up a strong moment of inertia in confor mity with the span. The bending resistance of the beam is proportional to the moment of inerti a. According to the process of combinatorial magnification the bending resistance of the beam ma gnifies exponentially in conformity with the magnification of the bending moment. The embodiment of the invention contains one trapezium-shaped combinatorial modu le, which constitutes beams, one rectangular module of several lengths, which constitutes floors, and one module, which constitutes stairs. The combinatorial power of the trapezium-shape d module provides beams of several span ranges per one level of hierarchical combinatoria l reproduction and one open succession of hierarchical combinatorial reproductions. The inventi on ensures the functional-structural variety by the help of one module-type only. The technolog ical homogeneity is about its maximum, the unit price - about its minimum The general situation, based on a modular, combinatorial, multispan system, coul d be described as a high technological homogeneity of the execution of the beams, an organizati onal simplicity in the building sites, an aesthetic compatibility among the beams and a low relativ e, in relation to the relevant multitude of traditional technologies, price per constructional volumet ric unit.
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