Slip Form Assembly With Sliding Forms Reducing Lifting Load
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Solution Overview
Problem
Existing construction systems for concrete structures are costly and sensitive to weather conditions, particularly when using tilt-up panels or vertical form systems, which require high lifting capacity and are not economically viable for small to midsize structures.
Innovation Solution
A slip form assembly comprising a lifting pole, an inner form, and an outer form that are slidably coupled, allowing independent lifting and movement along the pole, reducing the total load on lifting mechanisms and enabling simultaneous lifting, pouring, and casting processes across different parts of the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tilt-up panels are used for constructing concrete walls, then construction speed is improved, but equipment cost and weather sensitivity increase
Solution Approach 1:
The construction system is divided into multiple independent slip form assemblies, each capable of operating autonomously. Each assembly includes its own lifting pole, forms, and concrete pouring system, allowing parallel construction of different wall sections without requiring centralized heavy equipment coordination.
Solution Approach 2:
The slip form assemblies incorporate movable forms that can slide vertically along the lifting pole as concrete hardens. This dynamic adjustment allows continuous construction without stopping to reposition forms, maintaining high productivity while using lighter, more economical equipment compared to static tilt-up panel systems.
2Adaptability or versatility
If vertical form systems are used for pouring concrete walls, then construction flexibility is improved, but lifting capacity requirements and equipment cost increase
Solution Approach 1:
The vertical form system is segmented into multiple independent slip form assemblies, each handling a portion of the wall. This segmentation reduces the lifting capacity required for each individual assembly compared to a single comprehensive form system, while maintaining overall construction flexibility through coordinated operation of multiple units.
Solution Approach 2:
Each slip form assembly is designed to handle only the concrete pouring and forming for its specific section rather than the entire wall. This partial action approach allows each assembly to use smaller, more economical lifting equipment while the collective system maintains the flexibility needed for various wall configurations.
3Reliability
If traditional form systems are used for small to midsize structures, then construction completeness is improved, but equipment cost and complexity increase
Solution Approach 1:
The construction system uses multiple independent slip form assemblies instead of a single complex form system. Each assembly is relatively simple in design but collectively they provide complete wall construction capability, reducing overall system complexity while maintaining construction completeness for small to midsize structures.
Solution Approach 2:
Each slip form assembly is self-contained with its own lifting mechanism, forms, and concrete pouring system. This self-service capability eliminates the need for complex centralized equipment and coordination systems, reducing equipment complexity while ensuring complete and reliable construction of each wall section.
Data Source
AI summary
A slip form assembly and a slip form construction system are provided. The slip form construction system includes a first slip form assembly including a first lifting pole extending longitudinally, a first inner form slidably coupled to the first lifting pole, and a first outer form slidably coupled to the first lifting pole opposite the first inner form such that a first cavity for casting a first portion of a wall is defined therebetween. At least one panel is coupled to at least one of the first inner form and the first outer form such that the at least one panel forms at least a partial inner surface of at least one of the first inner form and the first outer form wherein concrete poured into the first cavity engages the panel and is prevented from engaging an inner surface of either the first inner or outer forms.