Stackable Caisson with Interlocking Stiffeners for Erosion Resistance
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Solution Overview
Problem
Existing civil engineering structures such as retaining walls and embankments are prone to damage and erosion due to their lack of stability and mechanical strength, especially during climatic and geological phenomena, and they often require costly and environmentally impactful materials like rockfill, which limits their versatility and durability.
Innovation Solution
A prefabricated, stackable box system with vertical and horizontal stiffeners in reinforced concrete, featuring a multi-position interlocking device and recesses for modular assembly and reinforcement, allowing for the creation of stable structures that can withstand erosion and varied environmental conditions, and can accommodate different materials including polluted ones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional formwork methods and separate drainage parts are used, then construction flexibility is maintained, but structural stability and resistance to climatic phenomena deteriorate
Solution Approach 1:
The patent merges the facing elements, drainage systems, and embankment parts into a single integrated caisson structure. The caisson includes internal compartments for drainage materials, reinforced concrete stiffeners for structural stability, and face finishes for erosion protection, all combined in one prefabricated unit that eliminates the need for separate construction components.
Solution Approach 2:
The caisson is designed as a multi-functional element that simultaneously provides structural support, drainage, erosion protection, and embankment formation. The same caisson structure serves multiple purposes: the reinforced concrete stiffeners provide both structural rigidity and erosion resistance, while the internal compartments handle both drainage and material containment functions.
2Strength
If massive walls and prefabricated concrete blocks are used, then structural strength is improved, but adaptability to different uses and materials deteriorates
Solution Approach 1:
The caisson is divided into multiple internal compartments separated by vertical partitions, allowing different materials to be placed in different sections. The compartments can contain drainage materials, filled materials, or other contents as needed, while the external reinforced concrete structure provides overall strength and stability.
Solution Approach 2:
Different parts of the caisson have specialized properties: the external reinforced concrete stiffeners provide structural strength and erosion resistance, while the internal compartments provide material containment and drainage functions. The face finishes are specifically designed for erosion protection, while the internal partitions provide material separation.
3Adaptability or versatility
If gabions and flexible structures are used, then adaptability to terrain variations is improved, but mechanical resistance and structural stability deteriorate
Solution Approach 1:
The caisson combines flexible face finishes that can adapt to terrain variations with rigid reinforced concrete stiffeners that provide mechanical resistance. The composite structure allows the facing to conform to the ground while the internal reinforced concrete framework maintains structural stability and load-bearing capacity.
4Stability of the object's composition
If poured-in-place concrete structures are used, then structural continuity is improved, but vulnerability to corrosion and climatic hazards deteriorates
Solution Approach 1:
The reinforced concrete stiffeners are pre-installed within the caisson structure before the caisson is placed in service. This preliminary reinforcement placement ensures that the structure has built-in corrosion protection and structural continuity from the outset, rather than relying on post-construction repairs or additions.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates essentially to a parallelepiped box (1) defined by long (4) and short (5) vertical peripheral walls. The box (1) comprises internal compartments (2) separated by vertical partitions (3, 3c) and at least one inner central column (7) which is arranged at the junction of the internal partitions (3 and 3c) and extends from a multi-position interlocking device (8) located in the lower portion of the box (1) to an interlocking device (9) located in the upper portion of the box (1). The invention also relates to a civil engineering structure that comprises at least two such boxes (1).