Telescopic Column Connection with Cap Plate Drainage
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Solution Overview
Problem
Multistory steel-framed buildings with telescopic column systems face issues of water intrusion and accumulation due to clogged weep holes, leading to structural damage and flooding, as existing connections fail to effectively prevent water from entering and draining through the columns.
Innovation Solution
A connection system using a horizontal cap plate and a vertical sleeve with a bore, where the second post's lower portion is slidingly received in the sleeve, preventing water intrusion and featuring a retainer for supporting the second post, and optional weep or drain openings for water management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If telescopic column connections are used for multistory building construction, then assembly efficiency and structural flexibility are improved, but water intrusion and accumulation occur leading to structural damage
Solution Approach 1:
The patent extracts the water drainage function from the telescopic connection system by adding separate weep holes and drain tubes. The cap plate with integrated weep holes and the drain tube extending to the bottom of the lower column create a dedicated water removal path, separating the structural telescopic function from the water management function to prevent water accumulation that would compromise structural integrity.
Solution Approach 2:
The cap plate serves as an intermediary component between the upper and lower columns. It provides a transition zone with integrated weep holes that allow water to escape from the telescopic connection, preventing water from accumulating within the column structure while maintaining the structural connection between columns.
2Object-affected harmful factors
If weep holes are drilled in columns to drain water, then water accumulation is reduced, but holes become clogged or are overlooked resulting in water damage
Solution Approach 1:
The patent implements preliminary action by pre-installing drain tubes that extend from the cap plate weep holes down to the bottom of the lower column during the initial assembly process. This ensures that water drainage pathways are established before water intrusion can occur, preventing clogging issues that would arise from attempting to clear holes after they become blocked.
Solution Approach 2:
The cap plate performs multiple functions: it provides structural support for the telescopic connection, incorporates weep holes for water escape, and serves as an anchor point for the drain tube. This multi-functionality ensures that water management is integrated into the structural component itself, making the drainage system more reliable and less prone to failure.
3Adaptability or versatility
If hollow posts are used for telescopic arrangement, then structural flexibility and assembly ease are improved, but water can intrude and accumulate causing freezing damage
Solution Approach 1:
The patent segments the hollow post system into separate functional zones by introducing the cap plate with weep holes at the connection point. This segmentation allows the upper and lower columns to maintain their hollow telescopic structure for flexibility while creating controlled openings at the connection interface to prevent water accumulation within the hollow sections.
Solution Approach 2:
The patent applies preliminary anti-action by providing weep holes and drain tubes before water can intrude and accumulate to harmful levels. The drainage system is built into the connection design from the outset, creating preemptive pathways that actively counteract the natural tendency of water to collect in the hollow telescopic sections, preventing freezing damage before it can occur.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents water intrusion and accumulation, enhancing the structural integrity of the columns and reducing the risk of flooding by isolating water within each post, thus protecting the building's foundation and maintaining the structural stability of the multistory building.
Implementation Method 1
The second post lower portion has an outer dimension that is slightly less than the connection sleeve inner dimension so that the second post lower portion is slidingly received in the connection sleeve bore
Implementation Method 2
The second post lower portion is slidingly received in the connection sleeve bore in an overlapping, telescopic arrangement
Implementation Method 3
water can intrude into the hollow posts or columns and drain by gravity all the way to the bottom of the bottom post
Data Source
AI summary
A first post has a lower portion at a first floor of a multistory building and an upper portion at a second floor, and a second post has a lower portion at the second floor and an upper portion at a third floor or building-top structure. A post connection includes a horizontal cap plate and a vertical sleeve extending upward from the cap plate and having a bore with an inner dimension. The cap plate attaches to and covers the first post upper portion to prevent water intrusion into the first post. The second post lower portion has an outer dimension that is slightly less than the connection sleeve inner dimension so that the second post lower portion is slidingly received in the connection sleeve bore in an overlapping, telescopic arrangement. A retainer may be installed for engaging and supporting the second post on the connection.