SU1548390A1 - Large-span industrial building - Google Patents

Abstract

The invention relates to large-span industrial buildings. The purpose of the invention is to reduce material consumption. The columns of the building have different stiffness and are installed on crane racks. The columns with greater rigidity are placed on the overpass with the articulated support of the gantry crane, and with less rigidity - on the overpass with the rigid support. 1 il.

Description

The invention relates to the construction of a large-span building equipped with a heavy-duty gantry crane with rigid and hinged supports.

The purpose of the invention is to reduce material consumption.

The drawing shows a large-span industrial building, a cross-section.

The large-span industrial building includes columns 1 and 2, trusses of 3 roofs, crane racks 4 and 5, gantry crane 6 with rigid 7 and hinged 8 supports on rails 4 and 5. Columns 1 and 2 are installed on racks 4 and 5. Columns 2 with larger stiffness mounted on the rack 5 with a hinged support 8 gantry crane 6, and columns 1 with less rigidity mounted on the rack 4 with a rigid support 7 gantry crane 6.

During operation, the building is subject to horizontal lateral braking forces of the gantry crane 6, wind and vertical loads. In order to optimally solve the building framework, taking into account that its columns 1 and 2 are installed on crane racks 4 and 5, each ramp 4 and 5 should be affected by an equal load.

In the gantry crane 6 with rigid 7 and hinged 8 supports, the lateral braking force is perceived only by the rigid support 7. Columns 1 and 2 of different rigidity perceive wind forces in proportion to their linear rigidity (the greater the linear rigidity of the column, the greater the proportion of total wind loads it perceives) .

Taking these circumstances into account and in order to preserve the uniformity of the impact of the loads on each racks 4 and 5, it is necessary that the columns 1 and 2 of the building be made of different rigidity, while the columns 2 are a larger gesture (L

ate

J

00

with

WITH

The bones must be mounted on the overpass 5 with the hinged support 8 of the crane 6, and the columns 1 of lesser rigidity must be installed on the overpass 4 with the rigid support 7 of the crane 6.

In this case, the overpass 5 perceives the major share of wind loads, and the overpass 4 perceives loads from the lateral braking forces of the crane 6 and an insignificant share of wind loads. By altering the stiffness ratio of columns 1 and 2, it is possible to achieve almost equal effects of horizontal and bending moments of loads on racks 4 and 5.

The vertical loads on ramps 4 and 5 are almost equal to each other.

Ensuring that the vertical and horizontal loads are equal for each of the ramps 4 and 5 significantly reduces the material consumption of racks 4 and 5 and the foundations of the building. This is explained as follows. Taking into account that on each ramp 4 and 5 there are vertical loads P from the weight of coating 9, crane 6, walls 10, etc., and on each of racks 4 and 5 this load is approximately the same, as well as the moment M from wind turbines loads and brakes of the crane 6, then the forces in the branches x of each trestle 4 and 5 are equal

 |

M

+ ъ

and

N -Z -Ґ

And "- 2 b

where b is the width of racks 4 and 5.

The cross section of the racks 4 and 5 is selected by the maximum force in the branch x, t,

and P

 2

five

on.

Then the friend branch of the underweight

value - characterizes the inequality

The numbering of the loading of the racks 4 and 5. In connection with this, a compressive force arises in one of the branches, and a squeezing force in the other, i.e. uneven loading of branches leads to a double increase in the consumption of materials.

To reduce this unevenness with equal vertical loads.

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20 25 here

P on columns 1 and 2 should be leveled and moments, which is the optimal solution. In this case, in the branches of racks 4 and 5, there are no tearing forces, thereby more economically consumed material.

In the absence of tearing-off efforts in the branches of bridges 4 and 5, when designing the foundations separately for each, the branch of bridges 4 and 5 achieves significant savings in materials for the creation of foundations and pile foundations.

The implementation of columns 1 and 2 of different stiffness and, therefore, different widths also leads to a decrease in material consumption due to the fact that rigid columns 2 more significantly unload the trusses 3 of the coating due to the framing of their joints with column 2 with greater rigidity.

Since the total stiffness of columns I and 2 of the building increased, the building’s deformability decreased, i.e. The working conditions of coating 9, walls 10, and their junctions have improved.

One of the advantages of the invention

is ..

35

.

40

45

50

no so-called so as the width of the crane

dead zones 6 are equal to the width of the technological hall, and the volume of crane racks is fully used to accommodate the building energy supply devices, which reduces the total area of the building, i.e. reduces the cost of general construction works.

Claims (1)

Invention Formula A large-span industrial building that includes columns, roof trusses, crane racks with rigid and articulated supports of the gantry crane, characterized in that, in order to reduce material consumption, the columns have different stiffness and are installed on crane ramps, with the columns with greater rigidity installed on the crane an overpass with an articulated gantry crane support, and a lower-stiffened axle on a crane overpass with a rigid gantry crane support.