Function of A:
– Provides rigid extension and connection between prefabricated columns or between prefabricated columns and foundations.
– Transfers all forces from the column to the supporting structure, such as the foundation.
Implementation Process of B Connection:
– Prefabricated columns are secured to anchor bolts embedded in the base structure.
– Connection and fixation are achieved using nuts and washers on the anchor bolts.
– Columns are installed at the correct height and aligned both horizontally and vertically.
– The gap between the column base and the underlying structure is promptly grouted.
– The connecting components and grouting layer work together to form a reinforced concrete system.
Quantity C: Determined by the column size, applied stress, concrete grade, and type of column base connection.
Size D and Bearing Capacity: Correspond to the specifications of the associated bolts.
Application Limitations and Design Principles (E):
Restrictions:
– Bearing capacity is calculated based on static loads.
– For dynamic and fatigue loads, larger safety factors must be applied on a case-by-case basis.
– For temperatures below -20°C, consider using steel plates with enhanced resistance to cold impact.
Design Principles:
– Calculate bearing capacity of the connection during the installation phase.
– The position and thickness of the grout layer define the height from the concrete surface to the top of the bolt.
– Account for bending and buckling of bolts caused by wind and permanent loads during installation; if current sizes are insufficient, use larger column base connectors and bolts.
– Grouting at the joints should be performed as soon as possible after installing the prefabricated columns.
On-site Installation of F Prefabricated Columns:
The installation level is defined by the top surface of the nut or the steel plate placed beneath the column.
– Once bolts are tightened with a torque wrench, the crane can be released from the column.
– Installation must strictly follow the approved installation plan.
– Use non-shrink grout for joint filling; the grout strength must be at least 70% of the specified concrete grade for the column.
Example Image
Supplier:
Peck Building Accessories (Zhangjiagang) Co., Ltd
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