楼承板安装注意事项及楼承板的构造与使用方法

钢结构柱网间距一般为5~9.0m×8~15m，次梁间距为3M，彩涂楼承板支撑板下料长度为4.97~8.97m，运输安装困难。彩涂楼承板特别是地板支撑板难以从弧区垂直提升，次梁之间难以自上而下穿入，干扰了次梁的正常焊接过程。

如果将下料长度控制在3~6m，可以避免垂直运输时次梁之间无法起吊的问题。应使用专用软吊索起吊地板支承板。每次起吊时，彩涂楼承板检查软吊索是否撕裂或割伤。当地板支撑板放置在钢梁上时，应防止探头。摊铺时，操作人员应系好安全带，并确保在铺设时安全带固定在周围的安全绳上。焊接应采用熔透点焊。焊接前，应准备剩余材料的引弧焊接，并调整焊接电流。由于楼承板底部无水平模板和竖向支撑，混凝土浇筑时分布不应过于集中，应采用平板振捣器及时分布振捣。地板承重板的结构和使用方法地板承重板的外形为0.8mm、1.0mm、1.2mm、1.5mm、688mm~915mm、1025mm宽、51mm~76mm高。工程楼板承重板与钢筋混凝土结构共同作用，为组合结构。 彩涂楼承板支撑板铺设并与钢梁连接，板端与钢梁采用熔透点焊，中间通过螺柱与钢梁焊接；地板支承板用专用钳子夹紧压力孔连接；插头应与专用镀锌插头板、地板承重板和钢梁点焊。若为弧形区域地板承重板异形切割，则应采用等离子切割机切割，切口光滑，表面镀锌完整。地板支撑板采用手工电弧焊点焊。焊条为E4303，直径3.2mm，熔透焊点为16mm。原设计焊点间距为305mm，然后将焊点加倍，以保证操作人员行走时地板支撑板不变形，混凝土浇筑时地板支撑板端部不漏浆。当楼层结构标高变化不一致时，应采取焊接型钢的措施，使水平结构逐步过渡。当标高降低时，在工字梁腹板上焊接角钢；升高标高时，工字梁翼缘应与槽钢焊接。楼板上有预留洞口时，尺寸一般大于500mm×500mm时，应采取先开孔的措施，即钢梁与型钢龙骨焊接分离，以增加洞口的刚度，钢筋网应在孔处断开并与型钢焊接；开孔尺寸小于500mm×500mm处采取后开措施，即在楼板承重板上加一堵分格板，连接钢筋网，混凝土浇筑完毕后切断钢筋

The spacing of steel structure column grid is generally 5 ~ 9.0m × 8 ~ 15m, the spacing of secondary beams is 3M, and the blanking length of floor support plate is 4.97 ~ 8.97m, which is difficult to transport and install. In particular, it is difficult to vertically hoist the floor support plate from the arc area, and it is difficult to thread between the secondary beams from top to bottom, which disrupts the normal welding process of secondary beams. If the blanking length is controlled to be 3 ~ 6m, the problem that it cannot be lifted between secondary beams during vertical transportation can be avoided. Special soft slings shall be used for lifting the floor bearing plate. During each lifting, check whether the soft sling is torn or cut. When the floor support plate is placed on the steel beam, the probe shall be prevented. During paving, the operator shall fasten the safety belt and ensure that it is fixed on the surrounding safety rope while laying. Penetration spot welding shall be adopted for welding. Before welding, the pilot arc welding of leftover materials shall be prepared and the welding current shall be adjusted. Because there is no horizontal formwork and vertical support at the bottom of the floor bearing plate, the distribution shall not be too concentrated during concrete pouring, and the plate vibrator shall be used to distribute the vibration in time. Structure and application method of floor bearing plate the profile of floor bearing plate is 0.8mm, 1.0mm, 1.2mm, 1.5mm, 688mm ~ 915mm, 1025mm wide and 51mm ~ 76mm high. The engineering floor bearing plate acts together with the reinforced concrete structure and is a composite structure. The floor support plate is laid and connected with the steel beam, the plate end is welded with the steel beam through penetration spot welding, and the middle is welded with the steel beam through stud; The floor bearing plates are connected by clamping the pressure hole with special clamping pliers; The plug shall be spot welded with special galvanized plug plate, floor bearing plate and steel beam. If it is a special-shaped cutting of floor bearing plate with arc area, it shall be cut by plasma cutting machine, with smooth incision and complete surface zinc coating. The floor support plate is welded by manual arc spot welding. The electrode is E4303, with a diameter of 3.2mm, and the penetration welding point is 16mm. The original design welding point spacing is 305mm, and then the welding point is doubled to ensure that the floor support plate does not deform when the operator walks, and there is no slurry leakage at the end of the floor support plate during concrete pouring. When the elevation of the floor structure changes inconsistently, the measures of welding section steel shall be taken to make the horizontal structure transition in steps. When the elevation is reduced, angle steel shall be welded on the web of I-beam; When raising the elevation, the flange of I-beam shall be welded with channel steel. When there are reserved openings on the floor, the size is generally greater than 500mm × When 500mm, the measures of opening first shall be adopted, that is, the steel beam shall be welded with section steel joist for separation to increase the rigidity of the hole, and the mesh reinforcement shall be disconnected at the hole and welded with the section steel; The opening size is less than 500mm × Post opening measures shall be taken at 500mm, that is, a plug dividing plate shall be added on the floor bearing plate, the mesh reinforcement shall be connected, and the reinforcement can be cut off after concrete pouring