Influence of anchor bolts on engineering quality of steel structure

The embedment quality of anchor bolts directly affects the installation quality of steel structure engineering. It is very important to control the position, verticality, length and elevation of anchor bolts to reduce reaming and adjusting workload and improve the quality of steel structure engineering. Before pouring the foundation concrete,. The supervision engineer who strictly checks the rationality and reliability of the embedded bolt construction method needs to do the prerequisite work of carefully checking whether the index is beyond the reasonable range.

One e of the important sub-projects in the production and installation project of steel structure engineering is welding project, welding process and finished product inspection. The quality control of welding engineering is the preparatory work that supervision engineers need to do. Manual welding has many welding quality problems. Such as welding nodulation, slag inclusion, porosity, incomplete welding, edge biting, dislocation, weld size deviation, unnecessary arc welding plate, welding deformation is incorrect, spatter is not clean, etc. Welding engineering is one of the important parts of steel structure fabrication and installation engineering. The e supervision engineer shall be engaged in the preliminary preparation, welding process and finished product inspection, as well as the quality control of the welding project. There are many welding quality problems in manual welding, such as welding nodulation, slag inclusion, porosity, incomplete welding, edge biting, dislocation, large weld size deviation, unnecessary arc welding plate, incorrect welding deformation, unclean spatter, etc.

High strength bolt connection engineering is also one of the important sub-projects of steel structure engineering, but also one of the weak links of construction quality at present, which is mainly shown in :1. High strength bolts shoddy; 2. The surface treatment of high strength bolt connection fails to meet the specification requirements, including surface treatment, smooth and tight binding, bolt hole quality, etc. 3. Do not tighten the high-strength bolts according to the specifications, such as ignoring the initial and final screws to complete in one time, etc. Supervision engineers need to work with a high sense of responsibility. Urge contractors to improve quality awareness, strengthen quality management, implement quality assurance measures, and actively adopt on-site supervision, parallel inspection and other working methods. Only in this way can the construction quality of high strength bolt connection engineering be guaranteed.

The rust removal and coating of steel structure is easily neglected by the contractors of steel structure engineering at present, and it is also the weak link in the construction of steel structure engineering. If this phenomenon is not corrected, it will have a great impact on the construction quality of the steel structure, because the quality of rust removal and painting will directly affect the maintenance cost of the steel structure in the future service life, as well as the service life, structure safety and fire resistance time in the case of fire. The lack of understanding of the importance of painting work by the relevant personnel of the contractor, coupled with the lack of quality responsibility, is the reason for the frequent quality problems of painting engineering.