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Floor bearing plate stud requirements

Release:     Release date:2019-05-18

1. The bolt Settings of floor slab and reinforced truss floor slab are also different. The distance between the bolt center of floor slab and the upper flange or embedded part of the steel beam should not be less than 35mm, and the distance between the upper flange of the concrete steel beam and the embedded part of the reinforced truss floor slab should not be less than 60mm

2. The spacing of studs along the beam axis shall not be less than 6 times the diameter of the stud rod, shall not be greater than 4 times the thickness of the floor bearing plate, and shall not be greater than 400MM, and the direction perpendicular to the beam axis shall not be less than 4 times the diameter of the stud rod, and shall not be greater than 400MM

3. When the bolt position is misaligned to the steel girder web, the diameter of the bolt rod shall not be greater than 1.51 times of the thickness of the upper flange of the steel girder in the tensile area of the upper flange of the steel girder, and 2.5 times of the thickness of the upper flange of the steel girder in the non-tensile area of the upper flange of the steel girder. The diameter of the bolt rod shall not be greater than 0.4 times the width of the groove of the pressed steel floor plate, and shall not be greater than 19MM

4. The bolt length of the steel truss floor plate shall not be less than 4 times of its rod diameter, and the height H of the bolt shall be greater than the height of the pressed steel floor plate plus 30MM, and shall be less than the height of the pressed steel floor plate plus 75mm

5. The thickness of the concrete protective layer on the top of the bolt shall not be less than 15mm, and the top surface of the steel reinforcement at the bottom of the pressed steel floor bearing plate on the lower surface of the bolt head shall not be less than 30mm

6. The method of welding studs for floor bearing plate is to switch on the power supply of welding gun of the welding machine, put studs on the welding gun, prevent arc seat ring and start the welding gun


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