CN205134664U - A upper and lower double -deck concrete slab structure for girder steel - Google Patents

Abstract

An upper and lower double-layer concrete slab structure used for steel beams. The upper reinforced concrete slab supporting angle steel is welded on both sides of the upper end of the steel beam, and the permanent formwork is placed on the upper concrete slab supporting angle steel; the lower end of the steel beam is also equipped with a lower reinforced concrete slab. The supporting angle steel of the lower concrete slab is welded on the steel beam, the suspension steel bar and the supporting steel bar are arranged at intervals, and the two ends are respectively welded on the steel beam and the supporting steel plate. The utility model adopts double-layer reinforced concrete floor slabs. For steel beams, it is difficult to arrange reinforced concrete slabs on the lower floor, so it is handled by adding supporting steel plates. The supporting steel plate is welded to the lower flange of the steel girder web by means of suspension reinforcement, so that the lower concrete slab will not have adverse effects on the lower flange of the steel girder. It can be seen that compared with the multi-cell single-layer concrete slab used for steel beams, the upper and lower double-layer concrete slabs used for steel beams make the whole room have only one cell, obtain a closed and flat roof of the room, reduce the complexity of the ventilation system, and facilitate Discharge the accumulated hydrogen, meet the functional requirements, eliminate hidden dangers in operation, and have good comprehensive benefits.

Description

A structure of upper and lower double concrete slabs for steel beams

technical field

The utility model relates to a concrete slab structure in a power plant, in particular to an upper and lower double-layer concrete slab structure used for steel beams.

Background technique

The battery room of the power plant is generally located in the main workshop or the centralized control room. Sometimes hydrogen overflows from the battery room and accumulates on the ceiling of the battery room. Usually, there is a ventilation system in the battery room to discharge the accumulated hydrogen in time. Therefore, the ceiling of the battery room is required to be flat, and a suspended ceiling is not suitable. The battery room arranged in the main factory building or centralized control room is generally not on the top floor, and its ceiling is not a roof, and there are other rooms on it. If the secondary beam of the ceiling is turned up, it will affect the upper room. In addition, because the horizontal and vertical secondary beams divide the ceiling of the battery room into multiple compartments, the accumulated hydrogen gas is divided into multiple parts, resulting in complex design of the ventilation system and hidden dangers in operation. Even if the secondary beam of the roof is turned up, because the roof of the battery room is also the ground of the previous floor, it is also required to be flat. Even if it is filled with light materials, it will increase its own weight and increase the cost. Due to the existence of floor deflection, the upper floor is prone to cracking and the appearance is not good.

Utility model content

The purpose of this utility model is to provide an upper and lower double-layer concrete slab structure for steel beams, so as to achieve the purpose of obtaining a closed and flat ceiling, reducing the complexity of the ventilation system, eliminating hidden dangers in operation, and improving comprehensive benefits.

In order to achieve the above purpose, the utility model provides an upper and lower double-layer concrete slab structure for steel girders, including steel girders and upper reinforced concrete slabs, characterized in that: both sides of the upper end of the steel beams are welded with upper reinforced concrete slab supporting angles, The permanent formwork rests on the supporting angle steel of the upper concrete slab; the lower end of the steel beam is also equipped with a lower reinforced concrete slab, and the supporting angle steel of the lower concrete slab is welded on the steel beam, and the suspension steel bars and supporting steel bars are arranged at intervals, and the two ends are respectively welded to the steel beam and the steel beam. on the supporting steel plate.

In order to prevent the force displacement of the supporting steel plate, the supporting steel bars are arranged obliquely.

The utility model adopts double-layer reinforced concrete floor slabs. For steel beams, it is difficult to arrange reinforced concrete slabs on the lower floor, so it is handled by adding supporting steel plates. The supporting steel plate is welded to the lower flange of the steel girder web by suspending steel bars, so that the lower concrete slab will not have adverse effects on the lower flange of the steel girder. The supporting steel bars are arranged obliquely. If a lateral force is generated on the supporting steel plate during construction, it can play a supporting role and prevent the supporting steel plate from being displaced.

If lightweight materials are used to fill the top of the lower concrete slab to the required elevation and serve as a template for the upper concrete slab, the self-weight of the entire floor will be increased, and the stress on the upper and lower concrete slabs is also unclear. If the profiled steel plate is used as the permanent base form, the cost is relatively high, and it must be purchased separately, which is inconvenient for construction. The support angle steel is welded on the steel beam, and the wooden formwork is placed on the support angle steel as a permanent formwork. It is very convenient to bind the upper concrete slab reinforcement and pour concrete.

It can be seen that compared with the multi-cell single-layer concrete slab used for steel beams, the upper and lower double-layer concrete slabs used for steel beams make the whole room have only one cell, obtain a closed and flat ceiling of the room, reduce the complexity of the ventilation system, and facilitate Discharge the accumulated hydrogen, meet the functional requirements, eliminate hidden dangers in operation, and have good comprehensive benefits.

Description of drawings

Figure 1 is a plan view of the upper and lower double-layer concrete slabs used for steel beams;

Figure 2 is used for the upper and lower double-layer concrete slab section A-A structural section of the steel beam;

Fig. 3 is a detailed diagram of the structure of the upper and lower double-layer concrete slabs of the steel beam.

detailed description

Referring to Fig. 1, referring to Fig. 2, referring to Fig. 3, the utility model comprises a steel beam 1, a lower concrete slab supporting angle steel 2, an upper concrete slab supporting angle steel 3, a lower concrete slab supporting steel plate 4, a suspension steel bar 5, a supporting steel bar 6, The lower reinforced concrete slab formed by the lower slab steel bars 7 and the lower slab concrete 8 , the upper reinforced concrete slab formed by the upper slab steel bars 10 and the upper slab concrete 11 , the permanent formwork 9 , and the partition wall 12 . During installation, first install the steel beam 1, and then weld the supporting angle steel 2 of the lower concrete slab on the steel beam 1. The suspension reinforcement bars 5 and the support reinforcement bars 6 are arranged at intervals, and the two ends are welded on the steel beam 1 and the support steel plate. Next, the formwork is supported, the lower deck reinforcement 7 is bound, and then the lower deck concrete 8 is poured. Next, the support angle steel 3 of the upper concrete slab is welded on the steel beam 1, and the permanent formwork 9 is rested on the support angle steel 3. Bind the upper deck steel bar 10, and then pour the upper deck concrete 11. After the strength of the lower floor plate meets the requirements, the formwork is removed, and the partition wall 12 is built by masonry.

Claims (2)

1. for a Dual-layer concrete board constructions for girder steel, comprise girder steel, top reinforcement concrete slab, it is characterized in that: both sides, girder steel upper end are welded with top reinforcement concrete slab supporting angle steel, permanent template is shelved on the concrete slab supporting angle steel of upper strata; Girder steel lower end is also provided with lower floor's armored concrete slab, and lower-layer concrete plate supporting angle steel is welded on girder steel, and suspention reinforcing bar and bearing bar interval are arranged, two ends are welded on girder steel and supporting steel plate respectively.

2. a kind of Dual-layer concrete board constructions for girder steel according to claim 1, is characterized in that: the oblique layout of bearing bar.