Precast Concrete Formwork for Trestle Construction
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Solution Overview
Problem
The construction period for concrete platforms is extended due to the need for form and support structures, which require setup and removal, and the use of steel forms necessitates additional supports and high transportation costs.
Innovation Solution
A process involving the formation of concrete forms with concrete side walls and a bottom slab, set on piers, where the form is not removed after concrete pouring, and a connecting member is used to maintain precision and prevent deformation, allowing simultaneous form and pier construction at different sites, reducing construction time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional form and support structures are used for concrete platform construction, then the structural integrity during pouring is ensured, but the construction period is extended due to setup and removal requirements
Solution Approach 1:
The form structure is merged with the final concrete platform structure. The form walls become integral parts of the concrete platform, eliminating the need for separate support structures and form removal operations. This combining of temporary formwork with permanent structure resolves the contradiction by maintaining structural integrity during construction while eliminating time-consuming setup and removal phases.
Solution Approach 2:
The form structure is constructed in advance as a separate entity (precast concrete walls) before the main concrete pouring operation. This preliminary preparation allows the form to be ready for immediate use, reducing on-site construction time while ensuring structural integrity is pre-established through factory-controlled manufacturing.
2Productivity
If steel form is used to reduce construction period, then fabrication time is reduced, but additional separate supports are required and transportation costs increase
Solution Approach 1:
The invention uses precast concrete form walls that are designed to be left in place as part of the final structure, replacing expensive steel forms that require complex support systems and transportation infrastructure. The concrete form walls are economical to produce locally and eliminate the need for additional support structures, resolving the contradiction between construction speed and device complexity.
3Manufacturing precision
If embedded metal parts are set with prescribed accuracy requirements, then the structural precision is ensured, but the construction period is extended further
Solution Approach 1:
Embedded metal parts are pre-positioned and fixed to the precast concrete form walls in the factory before delivery to the construction site. This preliminary positioning ensures prescribed accuracy is achieved under controlled factory conditions, while the actual construction process is accelerated since no time-consuming on-site adjustment is required.
Data Source
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AI summary
Provided is a process for producing a concrete platform to which an object to be supported is fixed, including: a step of forming form having a pair of concrete side walls and a concrete bottom slab that connects the pair of side walls (S2); a step of setting the form on a plurality of piers (S3); and a step of pouring concrete into the form that is set on the plurality of piers (S6).