Latticing Drop Panel Structure Reducing Slab Sagging
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Solution Overview
Problem
Conventional drop panel structures require larger and thicker girders or slabs to minimize sagging, which increases construction costs and is inefficient.
Innovation Solution
A latticing drop panel structure with a connecting member featuring four unit rods surrounding a concrete drop panel, where the unit rods are parallel to the column sides and cross at the same level, reducing sagging displacement without the need for increased thickness or size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the effective length of the girder or slab is reduced to minimize sagging, then the sagging displacement is reduced, but the cost of the girder or slab increases due to requiring larger thickness and size
Solution Approach 1:
The connecting member is divided into four separate unit rods that are positioned at the corners and connected to form a lattice structure. This segmentation allows the load-bearing function to be distributed across multiple smaller elements rather than requiring a single large thick girder, thereby reducing sagging without proportionally increasing material cost.
Solution Approach 2:
The invention introduces a spatial configuration where unit rods are arranged in three-dimensional space around the drop panel, forming a lattice structure that extends vertically and horizontally. This dimensional arrangement provides structural support without requiring increased thickness in a single plane, thus reducing the need for expensive thicker girders while有效控制 sagging.
2Manufacturing precision
If the thickness of the girder or slab is increased to reduce sagging, then the sagging displacement is reduced, but the cost increases greatly
Solution Approach 1:
Instead of using a single thick girder, the structure is segmented into multiple unit rods arranged in a lattice pattern. Each unit rod is thinner and less expensive, but collectively they provide the necessary structural support to reduce sagging, avoiding the need for large quantities of thick material.
Solution Approach 2:
The connecting member combines different structural elements (unit rods, drop panel, lattice configuration) into a composite structure that achieves high structural efficiency. This composite approach allows the structure to carry loads effectively without requiring large quantities of any single material, thus reducing overall material consumption and cost.
3Quantity of substance
If a lattice structure is used instead of a solid girder, then the quantity of material is reduced, but the structural complexity increases
Solution Approach 1:
The lattice structure is formed by segmenting the girder into discrete unit rods positioned at specific locations (corners and midpoints of sides). This segmentation simplifies the manufacturing process compared to casting a solid complex shape, as each unit rod can be produced separately and then assembled, reducing overall structural complexity despite the lattice configuration.
Solution Approach 2:
The unit rods serve multiple functions: they provide structural support, define the lattice geometry, and can be standardized components that are easily manufactured and assembled. This multi-functionality reduces the variety of components needed, simplifying the overall structure while maintaining material efficiency.
Data Source
AI summary
A latticing drop panel structure includes a plurality of columns (100 or 101) or walls, and a connecting member (210) including a concrete drop panel (219) having a cross-section area larger than that of the column (100 or 101) or the wall, wherein the connecting member (210) having four unit rods 212, surrounded around the drop panel (219) in a latticing form, wherein the unit rods (212) are parallel with the respective sides of the column and cross at the same level, whereby sagging displacement of the slab is reduced due to the existence of the drop panel.