Before laying the reinforcing steel mesh, the layout plan of reinforcing steel mesh should be drawn up. When laying the steel mesh, it should be placed on the spot according to the actual needs of the site. When the steel mesh is thin, the Z deion function of the steel mesh can be used. First, the middle part of the grid is twisted so that both ends can be pierced into the beam, and then the grid is laid.
When the reinforcing bar net can not bend, 1-2 reinforcing bars can be welded at the end of the welding net, and then the two ends are inserted into the beam, using the straight bar method and the field combination method. In the connection of cutting horizontal bar, steel bar and welding net, the connection mode of steel wire rope should be selected. There are two ways to set and fill the bottom grid. The surface network of bidirectional reinforcing bar should be selected by plane lap joint. Lower forces should be set at the quarter span of the girder edge. The length of the circle should be no less than 30dd and the diameter of the reinforcing bar should be no less than 2.5m.
The lap length of the minimum steel bar lap joint should not be less than 1.3 times of the minimum anchorage length between the last two welded joints, it should not be less than 200 areas, and the distance between each bar welding network and bar welding network should not be less than 1, and the distance between the two bars should not be less than 50. The minimum lap length of the web should be 1.3 times of the minimum anchorage length and should not be less than 300. The lap band is one of the two kinds of steel fabrics without transverse reinforcement.
The main technology of steel mesh pavement is: welding steel mesh should be positioned and screened according to the design drawings. The first-order steel mesh is the bottom mesh of equipment - additional buffer mesh or steel bar - support surface mesh laying - vertical and horizontal mesh laying - Additional mesh and steel bar. When laying the bottom mesh, the main stress steel bar should be located below the mesh hole. After laying the net, the main reinforcement bar should be above the net hole.