In the movement of the position of the task table (or support between columns) of the steel structure factory building, the chemical quantity is the smallest department. Generally, the request of the steel column can be static with the progress of the output ground. In order for the steel column conflict to accurately respond to the steel plant engineering equipment, corresponding reinforcement measures must be taken. The steel column reinforcement currently in use now has inter-column support, tie rods, and member support. There are obvious characteristics in the range of conflict prevention characteristics. Replacing the sliding screw with a steel ball screw at the top of the feed system can also receive the same results.
1. The steel plant project says that the composite floor is an anisotropic version. To determine whether it is a one-way or two-way board, the effective (converted) side length should be calculated according to the anisotropic coefficient and the anisotropic coefficient. Whether it is a unidirectional board or a bidirectional board.
2. It is judged as a two-way plate. The reinforcement in the vertical rib direction is arranged on the wave crest and along the rib direction in the trough. However, it should be noted that there should be a protective layer of not less than 20 mm. The resistance calculation is based on the thickness of the concrete above the rib as the slab thickness in the direction of the vertical rib, and from the trough along the rib direction, that is, the thickness of the combined floor is the slab thickness.
3. When extending along the rib direction, the profiled steel plate (converting the profiled steel plate into rebar) can meet the requirements of the bearing capacity of the normal section and meet the requirements of the shear bonding capacity. Pay special attention to the calculation of the shear bond bearing capacity. The composite floor is generally controlled by the shear bond.
4. Whether it is continuous or articulated at the beam support in the direction of the rib is not dependent on the profiled steel plate, but depends on the negative bending moment steel bar, and the profiled steel plate is ignored under compression. The direction of the vertical ribs is generally considered to be articulated, but the workshop building with anti-cracking structural steel bars should be configured.
5. If calculated according to the bidirectional plate, the reinforcement at the peak must be configured, and the profiled steel plate has no effect in the direction of the vertical rib.
6. The vast majority of composite floor slabs are one-way slabs, which are very special. For example, the corners may be two-way slabs. Because there are inclined beams, the general span is very small, and the same configuration as other parts can be basically satisfied without calculation.
7. The distribution ribs on the top of the board must meet the requirements of GB50010.
8. Combined floor slabs are not required to be designed as composite beams, but there must be certain structural studs to ensure the integrity of the slab and beam.
9. If designing composite beams, the secondary beams are generally calculated as composite beams, and the main beam (frame beam) should not be calculated as composite beams, because the frame beams bear repeated loads, and the composite beams have no seismic test report-this is ignored by the code By the way, GB50017 is different from GB50010, and GB50017 has no anti-seismic content. The deflection of the main beam under the applied load can be calculated according to the composite beam (if the requirements of the composite beam are met).
At present, there is no case of steel structure plant project adopting steel ball screw drive locally. The reinforcement conflicts of steel structure workshop projects (especially the steel structure workshop projects of the open-loop system) originate to a large extent from the conflict of the feed drive chain. Unless the machining errors of the transmission cone and the ball screw are reduced, another major measure is to adopt a gapless transmission pair. For the cumulative error of the ball screw pitch, pulse compensation equipment is generally adopted to stop the pitch compensation.
In order to further reduce the life span and anti-conflict resistance of the steel structure plant project, the wear resistance of the steel structure configuration components should be fully considered in the design, especially the reaction speed of the engineering rail, the main optical axis component of the feed servo machine, etc. Important machine wear resistance. In the course of application, all components of the steel structure plant project should be ensured to be smooth and excellent.
In the processing of steel columns in steel structure workshops, auxiliary time (non-chip time) has a large ratio. To further increase the productivity of the project, it is necessary to take the most restrictive austerity drive. At present, few CNC projects have adopted multiple main optical axes, multiple tool holders, and active tool change equipment with tool magazines to reduce tool change time. Regarding the steel structure workshop project with longer chip consumption, the steel column organization must be beneficial to the wind resistance requirements.
Qingdao Yili Steel Structure professionally undertakes steel structure design, budget, dismantling and rendering. Factory, warehouse. Design blueprint stamping service. For more questions, please consult the customer service of steel structure for consultation.