Connection node between the lower steel beam of the roof natural ventilator and the roof steel beam or steel roof truss

Abstract

The invention relates to a joint between a lower steel beam of a natural roof ventilator and a steel roof beam or a steel roof truss, which is used for a workshop with a roof bearing structure composed of steel beams or steel roof trusses. The joint comprises a lower ventilator steel beam, the lower flange of the lower ventilator steel beam is disposed on steel bracket bearing plates on two sides of a steel bracket vertical plate, lower ventilator steel beam webs on two sides of the steel bracket vertical plate are connected with an upper steel bracket stiffening rib through bolts, and the upper flange of the lower ventilator steel beam is connected with a steel bracket top plate through a connecting cover plate. No horizontal connecting beam can be disposed between two steel beam bearings below the ventilator, so that steel consumption is reduced greatly, and construction cost is lowered. In addition, according to the technical scheme, steel beam joints can be reduced greatly, and construction is facilitated.

Description

technical field [0001] The invention relates to a connection node between a lower steel girder of a roof natural ventilator and a roof steel girder or a steel roof truss, which is used for a factory building whose roof load-bearing structure is a steel beam or a steel roof truss. Background technique [0002] Roof natural ventilators have been widely used in factories in industries such as electric power, metallurgy, and chemical industry. Most of the roofs of these factories adopt steel beams or steel roof truss load-bearing structures. The connection between the ventilators and them is usually done by setting two parallel full-length ventilator lower steel beams 1 along the longitudinal direction of the factory building under the ventilator support, and the ventilator lower steel beams 1 are directly welded to the steel beams or steel roof trusses located on the roof The steel support 2 on the top, and at the same time, a horizontal connecting beam 3 is set between the two...

AI Technical Summary

Problems solved by technology

However, this approach has the following problems: ①Because the lower steel beam 1 of the ventilator not only acts on the vertical load transmitted from the support of the ventilator, but also the wind load acting on the ventilator is finally transmitted to the ventilator through the support Lower steel beam 1 upper flange

② Since the lower steel beam 1 of the ventilator is arranged along the longitudinal length of the factory building, the length is often longer, which requires setting up multiple splicing nodes, which increases a lot of welding workload and also improves the requirements for welding quality

③In this method, the horizontal connecting beam 3 must be installed at the support. When the longitudinal length of the factory building is long, the amount of steel is increased, resulting in a certain waste

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