Bulkhead System with Tendon Slots for Concrete Casting
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Solution Overview
Problem
The existing bulkhead systems in concrete casting beds require manual labor and pose safety hazards due to the need for workers to individually thread stressing tendons through each bulkhead, and subsequent disassembly is costly and labor-intensive.
Innovation Solution
A bulkhead system with a pair of base track members and form walls that include tendon slots, allowing tendons to be pulled along the length of the bed without individual threading through bulkheads, and enabling easy assembly and disassembly without manual destruction of bulkheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bulkheads are used in concrete casting beds, then structural separation is achieved, but labor cost increases and safety hazards occur due to manual threading of tendons
Solution Approach 1:
The bulkhead is divided into upper and lower sections with a tendon slot positioned between them, allowing tendons to pass through the slot without requiring manual threading through the entire bulkhead structure. This segmentation enables tendons to be pulled along the casting bed while maintaining bulkhead structural integrity.
Solution Approach 2:
The tendon slot acts as an intermediary element that facilitates tendon passage through the bulkhead. Instead of threading tendons through complex bulkhead structures, the slot provides a dedicated pathway that simplifies the operation and reduces safety hazards associated with manual threading.
2Productivity
If traditional bulkheads are used in concrete casting beds, then panel separation is achieved, but disassembly requires manual removal of screws or bolts increasing labor and material cost
Solution Approach 1:
The bulkhead system transitions from a static, permanently fastened structure to a dynamic, removable system. The upper bulkhead section can be detached from the lower section without requiring manual removal of multiple screws or bolts, enabling quick disassembly and reuse of bulkheads for subsequent casting operations.
Solution Approach 2:
The bulkhead components are designed to be temporarily positioned during casting and then easily removed and recovered for reuse. The detachable design allows bulkheads to be discarded from the casting bed after panel formation and recovered for use in the next casting cycle, reducing material costs and improving productivity.
3Strength
If traditional bulkheads require individual threading of tendons, then structural integrity is maintained, but labor cost and time consumption increase significantly
Solution Approach 1:
By segmenting the bulkhead into upper and lower sections with an intermediate tendon slot, the system maintains structural integrity where needed while providing a dedicated pathway for tendons. This eliminates the time-consuming process of individually threading tendons through the entire bulkhead structure.
Solution Approach 2:
The tendon slot is pre-formed as part of the bulkhead structure during manufacturing, eliminating the need for on-site tendon threading operations. Tendons can be directly pulled through the pre-prepared slot, significantly reducing the time and labor required during casting operations.
Data Source
AI summary
A bulkhead system for a concrete casting bed includes a pair of base track members spaced apart from one another along a longitudinal direction and a pair of form walls each removably attached to one of the base track members. Each of the form walls has a lower end abutting one of the base track members and an upper end opposite the lower end in a vertical direction perpendicular to the longitudinal direction. Each of the form walls has a tendon slot extending into the form wall in the vertical direction from at least one of the upper end and the lower end. The tendon slot receives a tendon extending in the longitudinal direction.