Floor Deck (steel bearing plate,construction steel sheeting) is cold-formed of galvanized steelsheet by roll forming, cross-section into a V-shaped, U-shaped,trapezoidal or similar shape of these types of waveforms used aspermanent formwork also can be selected for otherpurposes.
(A) it is called:
Combination of floor, floorboards, steel bearing plate, pressure plate, floor plate, the steelfloor boards, the combination of floor plate, galvanized steelbearing plates, galvanized floor plate, galvanized floor boards,the combination of floor boards, the combination of floor, floorsteel bearing plate, construction steel sheeting, composite slabs,etc., are divided into: opening the floor boards, the whole closedfor floor boards, dovetail floor boards etc.
(B) the mainfeatures:
1: to adapt to the rapidconstruction of the main steel structure, to provide a firmplatform for the job in a short period of time, and can use morethan one floor laying pressure plate, stratified flow constructionfor pouring the concrete slab.
2: use the stage floor boards asa concrete slab tensile reinforcement, but also improve thestiffness of the floor, saving the amount of steel andconcrete.
3: The pressure plate surfaceembossed to produce the greatest binding force between the floorboards and concrete, so that the two form an overall, together withthe stiffener, so that the floor plate system with high-strengthbearing capacity.
4: the conditions of thecantilever under the floor boards only as a permanent template.Cantilever the length of the section properties of the floorboards. In order to prevent the cracking of the cantilever plate,need the supports of the Structural Engineers of the design coupledwith negative reinforcement.
5: the floor boards of theCompany by the National fixed fire extinguishing systems andfire-resistant component quality inspection center fire resistancetesting, as a combination of floor boards do not need to fire thespray, thus greatly reducing the project cost.
(C) Application:
The products are widely used inpower plants, electrical equipment company, car showroom, steelplant, cement warehouse, steel structure office, airport terminals,railway stations, stadiums, concert halls, Grand Theatre, a largesupermarket, logistics center, the Olympic venues, sports venuesand other steel construction.
(D) of producttesting
a dynamic loading test,qualified for floor boards is subject to several groups of dynamicload test, draw the shear of the composite board - bondcoefficient, test out Even for the board and concrete bindingcapacity obtained in the large span bear on the designload.
b, fire test, the floor threegroups in the fire-resistant laboratory 1.5 hours, two hours andthree hours to load fire test for simultaneous measurement oftemperature distribution within the slab, test out Even Deckwhether the insulation requirements, refractory phase of thepositive moment resistance.
(E) Floor Deck Construction anduse
Profiles thick, floor boards,0.75mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm wide and 688mm ~ 678mm ~ 600mm ~750mm ~ 915mm ~ 1025mm high 5 1 mm ~ 76mm ~ 75mm long projectrequirements customized. Engineering floor mezzanine deck andreinforced concrete structure together, the composite structure.Laying floor boards to steel beam connections, the board ends andthe steel beam penetration welding, intermediate studs with steelbeam penetration welding; between the floor boards with specialclamping clamp occlusion pressure Kong connection; with specialplug galvanized plug boards and floor boards and steel beam spot.If it is with the arc of floor boards profiled cutting and plasmacutting machine cutting, smooth the cut surface of galvanized layerintegrity. Floor plate welding using manual arc welding electrodefor the E4303, 3.2mm diameter, the penetration welding point is16mm. The original design of a pad pitch of 305mm after the solderis increased by 1, to ensure that the operator walking floor boardsdeformation, the end of pouring concrete when the floor boardsslurry leakage. When the elevation change of floor layer structureis inconsistent, plus welding steel measures taken, the levelstructure showed a step transition, when the elevation of the lowerI-beam webs plus welding angle; uplift elevation joist flange andweld channel. Encountered floor reserved for the hole size isgenerally the first open hole measures more than 500mm × 500mm, theincrease in the steel beam welding steel joists separated toincrease the hole stiffness, mesh reinforced disconnect in thehole, and welding steel; hole size of less than 500mm × taken 500mmwhen open hole measures, namely the partition plate in the floorboard to increase the plug, mesh reinforced through, cut reinforcedconcrete pouring molding
(F) Floor Deck InstallationNotes
Steel column gateway from thegeneral 5 to 9.0m × 8 ~ 15m, the secondary beam spacing of 3m,cutting the length of the floor plate is 4.97 ~ 8.97m, transportand install than those in difficulties, especially with verticallifting floor from the arc zone for the board, from top to bottomto wear in the secondary beam Hazama sets is more difficult, anddisrupted the normal beam welding process. Control the cuttinglength is 3 ~ 6m, you can avoid the problem of verticaltransportation between the secondary beams can not be lifted. Thefloor board when lifting using a dedicated soft sling. Each liftingshould check soft sling is torn, cut off phenomenon. The floorboards shelved on steel beams should be to prevent the probe. Shopmaterials, the operator should wear a seat belt, and to ensure thatthe side laying the edge of fixed ropes in the perimeter security.Welding penetration spot welding, the welding should be prepared toscrap arc test welding and adjusting welding current leveltemplates and vertical support for the bottom of the floor boards,cloth when pouring concrete should not be too concentrated, the useof flat-panel vibrators timely assessed vibrators.
