Installation and inspection of steel construction corridor foundation in steel structure factory

Steel structure corridor is a structural mainly made of steel, and it is one of the main building structure types. The characteristics are steel beams, steel columns, steel trusses and other components made of section steel and steel plates. The structure of welding, bolt or rivet connection between components or parts is one of the main building structure types. Compared with other steel structures, the steel structureal of steel structure factory has advantages in application, design, construction and comprehensive economy. It has low cost and can be moved at any time.

Many steel structure corridors need embedded devices, so civil engineering is often required. In particular, the construction of some plants and warehouses requires civil engineering, embedded reinforcement and concrete pouring. Therefore, it is necessary to do a good job in the disposal of civil engineering devices, so that the later structural devices of steel structure engineering will not be in place.

The steel construction corridor of the steel structure factory shall place the column in place, and the axis shall be elastically measured on the outside of the column base. When the steel base plate is used as the support plate, the area of the steel base plate shall be calculated and determined according to the compressive strength of the foundation concrete, the load accepted by the column bottom before the secondary grouting under the column base plate and the fastening tension of the anchor bolt. The contact between the base plate and the bottom surface of the foundation and the bottom surface of the column shall be flat and tight.

The elevation of concrete column base is generally reserved for 50 ~ 60mm (compared with the design elevation of steel column bottom), and the device is leveled with steel base plate or grout bearing plate in advance.

Before the installation of steel construction corridor, the positioning axis, foundation axis and elevation, anchor bolt specification and position of the building shall be rechecked, and the handover acceptance shall be thoroughly inspected and handled. If the anchor bolt needs to recheck the axis and elevation of each bolt, corresponding remedial measures must be taken for those exceeding the standard requirements. For example, increase the size of the column base plate, and re drill holes on the column base plate according to the actual bolt position.

When the foundation works are handed over in batches, each handover acceptance shall not be less than the column foundation bottom of one device unit that can form the spatial stiffness, and shall comply with the following rules: the strength of foundation concrete shall meet the design requirements; Backfill and tamp around the foundation; The axis mark, elevation and datum point at the foundation are accurate and complete; The top surface of the foundation bottom shall be flat, the surface of the foundation bottom at the secondary pouring shall be roughened, and the anchor bolts shall be intact.

The embedded civil foundation quality device of the steel structure factory corridor has passed the inspection, so that the later devices can be carried out quickly. Ensure that the component device will not show displacement and dislocation, and the safety and stability of the structure can be guaranteed.