Dislocation-free expansion joint node for box type profiled steel sheets

Abstract

The invention discloses a dislocation-free expansion joint node for box type profiled steel sheets. The dislocation-free expansion joint node comprises a rigid connecting strip and two transitional connecting members, wherein the transitional connecting members are used for the end surfaces of the box type profiled steel sheets respectively arranged at two sides of an expansion joint, one end of the rigid connecting strip is fixed on one transitional connecting member and used as a fixing end, and the other end of the rigid connecting strip horizontally extends out along the longitudinal direction of the box type profiled steel sheets, is used as a free end and extends into a longitudinal sliding chute in the other transitional connecting member, so that the free end of the connecting strip can move along the longitudinal sliding chute. According to the dislocation-free expansion joint node, the vertical dislocation at the expansion joint of the two box type profiled steel sheets can be eliminated, meanwhile, free expansion and withdrawal of the longitudinally adjacent two box type profiled steel sheets can be ensured, and therefore the phenomenon that the two box type profiled steel sheets at two sides of the expansion joint are vertically staggered and pulled apart is effectively avoided on the premise of ensuring that box type profiled steel sheets freely expand and withdraw, and therefore a roof boarding can be effectively prevented from leaking.

Description

technical field [0001] The invention relates to a building component node, in particular to a box-shaped profiled steel plate non-dislocation expansion joint node. Background technique [0002] At present, box-shaped profiled steel plates have been widely used in large-span roof load-bearing steel structures, such as Figures 1 to 4 As shown in the figure, the existing box-shaped profiled steel roof does not need to be provided with purlins. It generally includes a truss 1, a box-shaped profiled steel plate 2, a roof panel and insulation cotton (the latter two are not shown in the figure), etc. In general The span of the box-shaped profiled steel plate can reach more than 15 meters, and the existing box-shaped profiled steel plate 2 is specifically formed by the upper and lower profiled steel plates 21 and the lower profiled steel plate 22 butted up and down, see image 3 , 4 , According to the actual stress situation of the box-shaped profiled steel plate, the H-shaped ste...

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Problems solved by technology

[0003] Since a single box-shaped profiled steel plate often cannot meet the length requirements of the roof in the length direction, it is often necessary to splice box-shaped profiled steel plates in the length direction, that is, in the longitudinal direction. Two longitudinally adjacent box-shaped profiled steel plates are usually The form of double cantilever is adopted, and there is an expansion joint 4 between the butt ends of the two box-shaped profiled steel plates, in order to meet the relative displacement of the box-shaped profiled steel plate itself due to thermal expansion and contraction due to temperature changes, see figure 2 , at present, in the construction process, the treatment of expansion joints is generally limited to reserved gaps as expansion joints, and no other measures are taken. , under the force of wind load, ground subsidence, inclination and earthquake load, the box-shaped profiled steel plates on both sides of the expansion joint are prone to vertical dislocation (or called vertical dislocation), so that the roof panel fixed on it will be directly pulled In severe cases, the roof panel may even be pulled off, causing damage to the roof panel and leakage

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