SU935582A1

SU935582A1 - Braceless guy-rope truss

Info

Publication number: SU935582A1
Application number: SU792893308A
Authority: SU
Inventors: Виталий Абрамович Файнштейн
Original assignee: За витель
Priority date: 1979-12-29
Filing date: 1979-12-29
Publication date: 1982-06-15

Description

1one

Изобретение относитс к строительству и может быть использовано в качестве несущих элементов покрытий зданий, вертикальных опор и мачт оазличного назначени и в мостостроении.The invention relates to construction and can be used as bearing elements for building coatings, vertical supports and masts for various purposes and in bridge construction.

Наиболее близким к предлагаемому вл етс безраспорна вантова ферма , включающа верхний и нижний вантовые по са, жесткий центральный элемент, выполненный составным из отдельных, соединенных между собой шарнирно стержней, жесткие распорки и диагональные гибкие подвес1 и. Достоинством фермы вл етс ее безраспорность , отсутствие необходимости воспри ти опорами горизонтального усили (распора) при действии вертикальной временной нагрузки и от собственного веса конструкции 1 }Closest to the present invention is an indistinct cable-stayed truss, including upper and lower cable-stayed cabs, a rigid central element made of a composite of separate, interconnected hinged rods, rigid struts and diagonal flexible hanger1 and. The advantage of the truss is its incontrovertibility, the absence of the need to perceive the supports of the horizontal force (expansion) under the action of the vertical temporary load and of the own weight of the structure 1}

Недостаток известной фермы наличие в конструкции большого количества жестких стержней и узлов со пр жени элементов (шарниров), следствием чего вл етс повышенный расход материала.The lack of a known truss is the presence in the construction of a large number of rigid rods and junctions with the shear of elements (hinges), resulting in an increased consumption of material.

Целью изобретени вл етс уменьшение расхода материала.The aim of the invention is to reduce the consumption of material.

Эта цель достигаетс тем, что в безраспорной вантовой форме, включающей верхний и нижний вантовые по са , жесткий центральный элемент, выполненный составным из отдельных соединенных между собой шарнирно This goal is achieved by the fact that in an indistinct cable form, including the upper and lower guy cables, a rigid central element made of a composite of separate interconnected hinges

10 стержней, жесткие распорки и диагональные гибкие подвески, жесткие распорки установлены в каждом четном узле центрального элемента, а диагональные подвески прикреплены одним 10 rods, rigid struts and diagonal flexible hangers, rigid struts are installed in each even node of the central element, and the diagonal hangers are attached by one

15 концом к каждому узлу вахтовых по .сов, а другими - к смежным нечетным узлам жесткого центрального элемента .15 by the end to each node of rotational shafts, and by others - to adjacent odd nodes of a hard central element.

Claims

Fig. 1 shows a diagram of a farm; in fig. 2-8 are diagrams of embodiments of cable yerms; in fig. 9 use case in the form of a mast. 393 The unconnected cable farm includes the upper 1 and lower 2 waits, the rigid central element 3 is made of a composite of individual hinges Q connected to each other, rigid struts 5 and diagonal flexible hangers 6. Moreover, the rigid central element is made of an even number of rigid rods , forming links of conjugate sequentially by hinges +, the number of which, taking into account the two end points, is one more than the number of links. According to sa. located on both sides of the central element, consist of n-1 number of links. Each node of the cable-stayed train is successively connected to the even nodes of the central element by rigid struts, and to adjacent odd nodes of the central element by flexible suspensions. The strength and stability of this scheme is provided as follows. A part of the truss (see Fig. 2) consisting of rods and flexible hangers connected by a hinge is geometrically unchangeable, and the whole truss is made up of a number of such unchangeable parts, with each subsequent part joining according to the principle of unchangeable hinge it is fastened to the previous part, shown in the diagram (Fig. 3) as a fixed support, and with the help of cable-stayed boards it is deprived of the remaining possibility of movement in the directions indicated by arrows. In this way, the structure is assembled (Fig. 1), all the elements of which are fixed one relative to the other. This structure consists of a smaller number of nodes and rods as compared to the known, i.e., it has an equal bearing capacity, is less labor-intensive to manufacture with less material consumption for hinges and 5 (strong rods. The proposed design depends on the working conditions (diagrams M , N and Q) can be designed in rational forms. For example, a truss, perceiving a bend according to the simple beam scheme, hinged at the ends, should look, as shown in Fig. Or Fig. 5. ac, with anchoring according to the complete restraint - as and Fig. 6 or Fig. 7 The console truss is shown in Fig. 8, the mast is shown in Fig. 9. Formula of the invention An indistinct cable-stayed farm comprising an upper and lower stayed cus, a rigid central element filled with a composite of separate, interconnected hinged rods , rigid louvers and diagonal flexible suspensions, characterized in that, in order to reduce material consumption, rigid struts are installed in each even node of the central element, and diagonal suspensions are attached at one ends to each node of cable-stayed boards, and other - to adjacent odd nodes of a rigid central element. Sources of information taken into account in the examination 1. USSR author's certificate number 63bZ 9, cl. E O B 3/08, 1976 (prototype).