RU2196209C2 - Supporting system to reinforce industrial buildings - Google Patents

Abstract

FIELD: construction industry, reconstruction of tower industrial buildings. SUBSTANCE: supporting system to reinforce industrial buildings includes frame made of supporting members and bracing units. Frame comes in the form of truncated one into which building is inscribed and includes inclined supporting members arranged in circle joined by means of bracing units placed in horizontal plane. Adjacent supporting members are positioned in symmetry one relative another and are made fast with upper ends one to another, their lower ends are linked fast to lower ends of following supporting members. Bracing units are also installed in intermediate sections of frame in addition to existing bracing units. Additional inclined supporting members rigidly made fast one to another with upper ends and to intermediate bracing unit of proper story and with lower ends to lower ends of key supporting members are placed in pairs in each story. EFFECT: development of supporting system making it feasible to reinforce spatial rigidity of building. 5 dwg

Description

 The invention relates to construction, is used in the reconstruction of tower industrial buildings or structures of circular cross-section in plan, in particular, can be used to amplify fan cooling towers.

 Known support systems for replacing a casing of a blast furnace, including shaft columns connected by a platform with a dome part and connections between each other, the platform being made of intersecting beams with cantilever protruding ends passed through the openings formed from the dome part, while the ends of the beams are rigidly connected to the dome part curvilinear overlays, and mine columns - in pairs [1] (analog).

 Known support systems do not provide sufficient strength and stiffness of the columns, since the latter are arranged vertically.

 It is also known a device for reinforcing a one-story industrial building, including a frame in the form of transverse frames made up of metal columns and a coating resting on them, longitudinal bonds between metal columns, crane beams fixed to metal columns, and connection elements connecting below the crane crane beams fixing columns and the base and located at an angle to the base, and the communication elements are installed in pairs on one side of the frame and made rigid, while paired bond elements are located symmetrically relative to the plane of the transverse frame and are connected to the metal columns with sheet diaphragms [2] (prototype).

The specified device has the following disadvantages:
a) it is intended to strengthen only industrial buildings of rectangular cross-section in plan;
b) the device does not have sufficient spatial rigidity and has weak torsional rigidity;
c) it is difficult to install the device on industrial buildings with a horizontal cross section of variable diameter vertically, especially if the diameter of the base is larger than the diameter of the upper part of the building, which makes it impossible to install vertical columns;
d) the presence of numerous transverse frames, metal columns and communication elements increases the intensity of the device.

 The purpose (objectives) of the present invention is to increase the spatial rigidity and strength of the system, increase the manufacturability of installation and reduce metal consumption.

 These tasks are achieved by the fact that in the support system for strengthening industrial buildings, which includes a frame of supporting elements and communication elements, the frame is made in the form of a truncated cone into which the building is inscribed, and consists of equally inclined support elements rigidly connected by communication elements in horizontal plane. Adjacent support elements are mounted symmetrically to each other and are rigidly connected to the upper ends with each other, and their lower ends are rigidly connected to the lower ends of subsequent adjacent supporting elements. Communication elements are made in the form of a round rim or an equilateral polygon, the sides of which are composed of rods. Communication elements are usually located in the upper and lower parts of the frame and form the base of the truncated cone of the frame. If necessary, reinforcement of the frame or taking into account the features of the configuration of the building, they can be installed in intermediate sections of the frame in addition to the existing ones. When the frame is executed, multi-tier communication elements are installed in the intermediate sections of the frame without fail and in each tier additional inclined support elements are installed in pairs, rigidly joined to each other by the upper ends and the intermediate communication element of the corresponding tier, and the lower ends with the lower ends of the main supporting elements. If necessary, additional stops, protrusions or anchor ties can be made on the supporting elements and communication elements of the frame to take the load of the building's gravity.

 In FIG. 1 shows a diagram of the proposed support system in a single-tier design; figure 2 shows a top view of the support system of figure 1 with communication elements in the form of a round rim; figure 3 is the same, with communication elements in the form of an equilateral polygon; figure 4 shows a diagram of the support system in a three-tier version; figure 5 shows a diagram of a support system in a two-tier design, designed to support an industrial building of circular cross-section in plan, for example, for a collapsing cooling tower.

 The support system for reinforcing industrial buildings includes a frame made in the form of a truncated cone. The frame covers the outside of the building (Fig. 5), that is, the building is inscribed in the support system, the overall contour of which is a geometric figure in the form of a truncated cone. The frame consists of inclined support elements 1 and 2 equally spaced around the circumference (in the circumferential coordinate), rigidly connected by communication elements 3 and 4, which are located in the horizontal plane. Adjacent support elements 1 and 2 are mounted symmetrically to each other and are rigidly connected by their upper ends to each other. Their lower ends are rigidly connected to the lower ends of subsequent adjacent supporting elements. Communication elements 3 and 4 are made in the form of a round rim or an equilateral polygon, the sides of which are composed of rods 5 and 6. The number of sides of the polygon corresponds to the number of docking nodes of the support elements. Communication elements 3 are located in the upper part of the frame and form the upper base of the truncated cone of the frame. Communication elements 4 are located in the lower part of the frame and form the lower base of the truncated cone of the frame. When implementing communication elements in the form of a polygon (Fig. 3), the rods 5 form the upper base, and the rods 6 form the lower base. To strengthen the frame, additional coupling elements 7 can be installed in intermediate sections of the truncated cone in addition to the existing ones.

 When the frame is multi-tiered (FIGS. 4 and 5), tier communication elements, for example, 8 and 9 for a three-tier frame, are mounted in the intermediate sections of the frame. In each tier, additional inclined support elements 10 and 11 for the middle tier and inclined support elements 12 and 13 for the lower tier are installed in pairs. The supporting elements 10 and 11 are rigidly joined to each other by the upper ends and to the intermediate tiered communication element 8, and the lower ends to the lower ends of the main supporting elements 1 and 2. The supporting elements 12 and 13 are rigidly joined to each other by their upper ends and to the intermediate tier the communication element 9, and the lower ends with the lower ends of the main supporting elements 1 and 2.

 The building (or structure) to be strengthened has the ability to rely on the docking nodes of the support elements, as well as directly on the horizontal communication elements (rim 3, polygon rods 5 and longline communication elements 8, 9). If necessary, additional supports, protrusions, fastenings or anchor ties 14 and 15 can be made on the supporting elements and communication elements of the frame to take the load of the gravity of the building (structure) 16. The frame of the supporting system is based on the foundation 17.

 The support system operates as follows.

 The frame of the support system can work in two versions. In the first embodiment, the frame is mounted without preliminary loading and it is included in the work with the possible further destruction of the building or structure, that is, it performs the safety role. In the second embodiment, the frame is mounted with a preload, providing the perception of part of the load (from gravity, from the wind, etc.) of the building or structure of the supporting system at the time of installation. Thus, in both versions, part of the load from the gravity of the building or structure with the equipment is transmitted through contact points (additional stops, protrusions or anchor links) 14 and 15 and communication elements 3, 4, 5, 6, 8, 9 to the supporting elements 1, 2, 10, 11, 12, 13 of the frame and further to the foundation 17 of the frame. At the same time, the communication elements serve to connect the supporting elements into a single structure and provide the perception of transverse loads and tensile forces.

 The proposed support system has high spatial rigidity, since the elements of the system form rigid triangles. The system provides the perception of part of the load acting on the building or structure, preventing its destruction (fall, etc.). The frame design has low metal consumption, since its elements work mainly on compression and tension, and not on bending, and the use of massive metal columns is not required. The shape of the support system allows you to set the foundation of the system at some distance from the zone of weakened foundation of the structure, thereby ensuring the strength, stability and reliability of the support system itself.

 The annual economic effect is approximately 3 thousand to 1 million or more conventional monetary units, depending on the type of structures.

Sources of information taken into account
1. Copyright certificate of the USSR 1216311 according to M. Kl. - E 04 G 23/00, publ. 03/07/86, Bull. 9.

 2. Copyright certificate of the USSR 1357526 according to M. Kl. - E 04 G 23/00, publ. 12/07/87, Bull. 45.

Claims (1)

 A support system for reinforcing industrial buildings, including a frame made of rigidly connected supporting elements and communication elements located in a horizontal position, characterized in that the frame is made in the form of a truncated cone into which the building is inscribed, while the supporting elements are made inclined and equally spaced around the circumference, moreover, the adjacent support elements are mounted symmetrically to each other and are rigidly connected to each other by the upper ends, and their lower ends are rigidly connected to the lower ends of the subsequent support elements nt, while the communication elements are installed in intermediate sections of the frame in addition to the existing ones, with the formation of tiered communication elements, and additionally inclined support elements are installed in pairs, rigidly joined by the upper ends to each other and the intermediate communication element of the corresponding tier, and the lower ends to the lower ends of the main supporting elements.

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