Vertical Precast Concrete Formwork with Integrated Force Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in producing load-bearing, vertical precast concrete elements lies in the difficulty of inserting force-transmitting elements during horizontal production, which is time-consuming and costly, and the inefficiency in transmitting shear forces and heat conduction through composite joints.
Innovation Solution
A method involving a formwork element with integrated force transmission elements and a layered structure that includes heat-insulating and compressive layers, allowing for easier production and improved force transmission and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If force-transmitting elements are inserted through formwork elements during horizontal production, then the precast concrete element can be positively connected to basement ceiling or floor slab, but the production process becomes time-consuming and costly
Solution Approach 1:
The force-transmitting elements are pre-installed into the formwork elements before the concrete pouring process begins. This preliminary action allows the elements to be positioned and secured in advance, eliminating the need for time-consuming post-pour installation and enabling simultaneous progression of multiple production steps
Solution Approach 2:
The force-transmitting elements are integrated within the formwork elements during the production process. The formwork elements serve as temporary containers that hold the force-transmitting elements in their final positions, allowing both components to be manufactured and prepared together as an integrated assembly
2Reliability
If rod-shaped reinforcement elements are used for force transmission in composite joints, then positive connection is achieved, but thermal expansion differences cause cracking in the concrete
Solution Approach 1:
The formwork elements are constructed as composite structures with a concrete base body and integrated wooden formwork portions. This composite material approach allows combination of materials with different thermal expansion characteristics, reducing thermal stress and preventing cracking while maintaining force transmission capability
Solution Approach 2:
The formwork elements feature localized wooden formwork portions at specific locations where thermal insulation and crack prevention are most needed, while maintaining concrete structure in load-bearing areas. This local quality differentiation addresses thermal expansion issues without compromising overall structural integrity
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
This method enables efficient production of precast concrete elements with integrated force transmission, reducing installation time and costs, while enhancing shear force transmission and minimizing heat conduction through composite joints.
Implementation Method 1
the base body has, at least in sections, a layered structure made up of heat-insulating and/or compressive force-transmitting layers... The core layer is made of heat-insulating or heat-insulating and compressive force-transmitting material
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Method for the horizontal production of a load-bearing, vertical precast concrete element (5) comprising the following steps: a) providing a substantially horizontally oriented formwork panel with formwork fixed to the formwork panel and projecting from a plane of the formwork panel, wherein the formwork panel and the formwork define an interior area to be filled with concrete and the formwork comprises at least one formwork element (1) comprising: - a base body (2) with a first contact surface (21) facing the interior area for the concrete to be poured and a second contact surface (22) facing an outside of the formwork for the subsequent connection of a horizontal building element (6), in particular a basement ceiling or a floor slab, and - at least one force transmission element (31, 32, 33),which traverses the base body (2) from the first support surface (21) to the second support surface (22) and extends beyond the first support surface (21) and the second support surface (22), b) laying reinforcement in the interior area, c) pouring liquid concrete into the interior area, d) compacting the liquid and reinforced concrete, e) hardening the compacted, liquid and reinforced concrete, and f) stripping the hardened, compacted and reinforced concrete, wherein at least one formwork element (1) remains on the hardened concrete as permanent formwork; and a load-bearing, vertical precast concrete element (5).