Beam Mount Welding on Tubular Columns
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Solution Overview
Problem
Long tubular steel columns used in building frames are prone to warping and deformation due to heat-induced welding processes, making precision placement and attachment of beam mounts challenging, especially in multi-story structures.
Innovation Solution
A method and apparatus utilizing a jig structure with swing-arm yokes and a carriage system that allows for precise, heat-free deployment and attachment of beam mounts along the length of tubular steel columns, using idler rollers and guide rings to maintain column stability and facilitate rotation, enabling off-site precision welding without on-site workers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding operations are performed on tubular steel columns to attach beam mounts, then beam mounts are securely attached to the column, but heat-induced warping and deformation of the column occurs
Solution Approach 1:
The invention applies preliminary action by pre-attaching beam mounts to beam ends at a controlled manufacturing environment before delivery to the construction site. This preliminary attachment allows for precise positioning and controlled welding conditions, eliminating the need for on-site welding of beam mounts to columns. The beam-end attaching components are pre-positioned on beam ends with high precision, and the entire assembly is delivered ready-for-connection to the column, thus avoiding heat-induced deformation during on-site installation.
Solution Approach 2:
The invention introduces an intermediary element - the beam-end attaching component with collar structure that mediates between the beam and column. This collar-form interconnect structure acts as a buffer that receives the beam and positions it against the column face, allowing the connection to be made without direct welding heat application to the column. The intermediary collar structure absorbs the thermal impact and provides a mechanical interface that simplifies the connection process.
2Productivity
If multiple column-to-column connections are made to achieve full building-frame height, then the structure is complete, but assembly time increases significantly
Solution Approach 1:
The invention applies segmentation by dividing the building frame into modular components - specifically, columns with pre-attached beam-mount clusters at predetermined intervals. This segmentation allows each column to be independently prepared with multiple beam mounts already positioned and attached, eliminating the need for multiple separate connection operations. The modular columns can be rapidly assembled vertically, reducing the number of on-site welding operations required to achieve full building height.
Solution Approach 2:
The invention applies preliminary action by pre-attaching multiple beam mounts to columns at the manufacturing facility before delivery to the construction site. This preliminary preparation of columns with pre-positioned beam mounts at predetermined intervals eliminates the need for multiple on-site welding operations. The columns arrive ready-for-connection with all beam mounts precisely positioned, allowing for rapid assembly and significantly reducing on-site assembly time and complexity.
3Manufacturing precision
If beam mounts are attached precisely at predetermined intervals along the column, then structural accuracy is improved, but the attachment process becomes more complex and time-consuming
Solution Approach 1:
The invention applies preliminary action by performing the complex precision attachment of beam mounts to columns at the manufacturing facility before delivery to the construction site. This preliminary action allows for the use of specialized equipment and controlled environments to achieve precise placement of beam mounts at predetermined intervals along the column. The complex positioning and attachment operations are completed in advance under optimal conditions, and the columns arrive at the construction site ready-for-connection, eliminating the need for complex on-site positioning operations.
4Ease of operation
If on-site welding is performed to attach beam mounts to columns, then the structure can be assembled, but heat-induced deformation and warping occurs
Solution Approach 1:
The invention applies the taking out principle by extracting the welding operation from the on-site assembly process. Instead of performing welding operations at the construction site, the beam mounts are pre-attached to columns at the manufacturing facility. This extraction removes the harmful welding heat source from the on-site environment, eliminating heat-induced deformation and warping of columns during construction. The on-site assembly is reduced to simple mechanical connections of pre-assembled components.
Solution Approach 2:
The invention applies preliminary action by completing the welding and attachment operations at the manufacturing facility before delivery to the construction site. This preliminary completion of welding operations eliminates the need for on-site welding, thereby preventing heat-induced deformation and warping of columns during construction. The columns arrive at the construction site as finished products with all beam mounts securely attached, ready for rapid mechanical assembly.
Data Source
AI summary
A method and related apparatus for precision deploy-attaching beam-mount structure to the outside of an elongate column at plural, defined attachment sites that are distributed and spaced along the length of the column. The method involves (a) preparing an elongate column to act as a travel way for a carriage which is designed to transport and deploy beam-mount structure, shifting such a carriage progressively along the column from defined attachment site to defined attachment site, and at each such site, deploy-attaching from the carriage to the column the carriage-carried beam-mount structure.