Construction of the main building for thermal power plant of every floor structure, design the profiled steel concrete beam slab structure, this structure in order to strengthen the integrity of steel beam and slab, steel anchor bar or shear studs are designed to strengthen the overall beam plate. In order to meet the design requirements, the traditional construction process is implemented in two forms: one is to weld the "U" anchor bar on the steel beam; the other is to use the welding technology to weld the shear studs on the steel beam; two.
The first construction process is time-consuming, has basically been eliminated; second kinds of construction technology of mechanical automatic welding, high work efficiency greatly, the construction cost is relatively lower, has been part of the construction project.
At present, the emergence of non fixed shear stud welding technology, namely the Hilti shear nails fixed, the main plant in Laicheng Power Plant 3, 4 machine each floor structure of profiled steel concrete profiled plate fixation with Hilti shear stud technology. The main building of every floor structure of profiled steel concrete profiled plate fixation with Hilti shear stud technology, its advantages are as follows:
A operation is simple, non special type of work can be completed, the traditional construction process and mechanical automatic welding, operation must be qualified welder to be competent. As a type of ordinary laborers can operate independently, unit labor costs low, 12.53 yuan / day, mechanical automatic welding for each class is two days, labor costs 24.22 yuan 2=48.44 yuan to the welder * / day.
The B force nail uses a special gun without additional force. The equipment is easy to operate and carry, without construction preparation. Automatic mechanical welding, each class must be mechanical positioning, power wiring and other construction preparation, must have power, power, configuration.
C gains the shear studs high work efficiency, 500 / day; 200 / number of automatic welding machine. The impact force of shear studs, using special anchors to shear nails and steel beam connection, not on the pressure plate and steel corrosion produced burns; mechanical automatic welding of profiled steel sheet and steel beam burns, corrosion damage, must be repaired.
D Hilti shear pin device into a small, an automatic welding machine cost can purchase 8 shear studs special gun, the same work capacity, automatic welding input to shear nails special gun 20
Times. In the application of Hilti shear nails before construction of personnel training, the training content for the use and maintenance of the shear nails special gun.