RU2387759C1 - Frame of multispan building - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: frame of multispan building includes foundation, columns, secondary girders, transverse structures and profiled decking. Columns are rigidly fixed on foundation. Secondary girders are hingedly rested on columns at the level of their upper belt. Transverse structures are arranged in the form of girders or beams. Profiled decking is laid onto upper belts of transverse structures to form a rigid disk. Lower belts of neighbouring secondary girders at least in two spans are joined by flexible prestressed joints with column.

EFFECT: reduced metal consumption for columns.

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Description

The invention relates to the field of construction, namely to metal steel frames of multi-span buildings for industrial and civil purposes.

The steel frame of a multi-span building is known, including columns rigidly fixed to the foundation, roof trusses and roof trusses and profiled flooring, while roof trusses are pivotally mounted on the columns [Auth. testimonial. No. 706501 of 03/27/78, M.cl. E0481 / 24, Bulletin No. 48 of 12.30.79].

A disadvantage of the known building frame is the large consumption of metal in the columns. This is due to the fact that when the trusses are hinged on the columns, their calculated length in the transverse direction according to SNiP P-23-81 * p. 6.10 * increases by more than 2 times.

Another metal frame of a multi-span building is known. The frame of the building includes columns, rigidly fixed to the foundation, trusses, runs rigidly fixed to the columns, and profiled steel flooring [book. Metal constructions. Under. Ed. Belenya E.I. M .: Stroyizdat. 1986, pp. 260-261, 269-271].

The drawback of the frame design is the complexity of the device for rigidly fastening the trusses to the columns, as well as the dependence of the forces in the columns and trusses on the settlement sediments.

Closest to the invention is a metal frame of a multi-span building, including columns rigidly fixed to the foundation, trusses pivotally supported on columns at the level of the upper girder, truss trusses and profiled flooring laid on the upper girders of trusses with the formation of a hard disk [A. Endizhevsky ., Nadelyaev V.D., Petukhova I.Ya. Frameworks of buildings from light metal structures and their elements. M .: DIA. 1998. p. 226-227].

A disadvantage of the known framework is the large consumption of metal in the columns, since their calculated length in the plane of the truss trusses is more than two times its geometric length.

The invention is aimed at reducing the consumption of metal on the columns of the frame of the building.

The result is achieved in that in the frame of a multi-span building, which includes columns rigidly fixed to the foundation, trusses, articulated on columns in the level of their upper belt, truss structures in the form of trusses or girders and a profiled floor laid on the upper zones of the truss structures with the formation hard drive, according to the invention, the lower belts of adjacent truss trusses, at least in two spans, are connected by flexible prestressed connections with the column.

Figure 1 shows the layout plan of the frame structures of a multi-span building; Figure 2 shows a cross section of the frame of a multi-span building section 1-1 in figure 1; Figure 3 shows the attachment point of the trusses to the column node A in figure 2.

The frame of a multi-span building consists of columns 1 installed with a step L in the transverse direction and with a step B in the longitudinal direction and rigidly fixed to the foundation. On the columns 1 are installed and pivotally fastened in the level of their upper belt to the roof trusses 2. The roof trusses 2 are installed on the truss trusses 2 in the form of trusses or girders. In the upper zones of the truss structures 3, a profiled flooring 4 is laid with the formation of a hard disk. The lower belts of adjacent trusses 2 are connected to the column 1 by flexible prestressed connections 5.

The frame of a multi-span building is mounted in the following sequence. Columns 1 are installed on the foundations and rigidly fixed, truss trusses 2 are installed on the top of the columns 1 and pivotally fixed using bolts. On the truss trusses 2, the truss structures 3 are laid in the form of trusses or solid section runs. In the upper zones of the truss structures 3 lay profiled flooring 4 with the formation of the hard drive. To reduce the estimated length of columns 1, the lower belts of adjacent truss trusses 2 are connected by flexible, prestressed, connections 5. Flexible connection 5 can be made of round steel, and its fastening at the ends to the lower zones of trusses 2 and columns 1 using eyelets 6. Preliminary the tension of the flexible connections 5 in this case, it is advisable to perform using a screw jack (lanyard) 7. The installation of flexible connections 5 in the lower zones of the truss trusses 2 between adjacent truss trusses, it is advisable to carry out in the middle of the building.

The frame of a multi-span building reduces the design length of the columns by 2 times, which leads to a decrease in metal consumption by 30%.

Claims (1)

The frame of a multi-span building, including columns rigidly fixed to the foundation, trusses pivotally supported on columns in the level of their upper girder, roof trusses in the form of trusses or girders and profiled flooring laid on the upper girders of roof structures with the formation of a hard disk, characterized in that the lower belts of neighboring truss trusses, at least in two spans, are connected by flexible prestressed connections with the column.

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