Thermal Insulation Structure with Low-Conductivity Rebars

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Solution Overview

Problem

Conventional thermal insulation methods for buildings, particularly in areas like verandas or balconies, suffer from thermal bridging due to high thermal conductivity rebars, leading to heat loss and potential mold growth, and existing thermal breaks are inadequate in preventing heat leakage and providing sufficient compressive force.

Innovation Solution

A thermal insulation structure that includes connection tension rebars with different thermal conductivity passing through a thermal insulation unit, shear rebars for support, and auxiliary shear rebars to enhance shear force, along with coupling covers for fire resistance, connecting floor and balcony slabs to prevent thermal bridging and reinforce structural stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional rebars with high thermal conductivity are used to provide reinforced support in verandas or balconies, then structural strength is improved, but thermal bridging occurs leading to heat loss

Engineering Contradiction:

Improvestructural strengthVSAvoidheat loss

Core Design Contradiction:

StrengthVSLoss of energy

Solution Approach 1:

The patent changes the thermal conductivity parameter of the rebars by using materials with different thermal properties. The first rebars have high thermal conductivity for structural strength, while the second rebars have low thermal conductivity to prevent thermal bridging, thus resolving the contradiction between strength and heat loss.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite reinforcement structures combining different rebar materials with distinct thermal conductivities. This composite approach allows the structure to simultaneously achieve the mechanical strength needed for support while minimizing thermal bridge formation through the use of thermally insulating rebar components.

Inventive Principle:

Principle #40Composite materials

2Loss of energy

If thermal breaks are installed to prevent thermal bridging, then heat loss is reduced, but structural support capability is weakened

Engineering Contradiction:

Improveheat lossVSAvoidstructural support

Core Design Contradiction:

Loss of energyVSStrength

Solution Approach 1:

The patent segments the reinforcement structure into multiple functional zones: first rebars embedded in the wall provide thermal breaking, while second rebars extend into the veranda/balcony to provide structural support. This segmentation allows each component to specialize in either thermal insulation or structural function, resolving the contradiction between heat loss prevention and structural support.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary reinforcement structure consisting of second rebars that connect the veranda/balcony slab to the wall. These intermediary rebars work in conjunction with the first rebars to simultaneously achieve thermal breaking at the wall interface while maintaining structural continuity and support capability through the extended reinforcement.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If shear rebars are coupled to compression modules to provide support, then structural stability is improved, but coupling weakness occurs leading to insufficient compressive force

Engineering Contradiction:

Improvestructural stabilityVSAvoidcompressive force

Core Design Contradiction:

Stability of the object's compositionVSStrength

Solution Approach 1:

The patent merges the shear rebar function with the compression module by having the shear rebars extend into and integrate with the compression module. This merging creates a unified structural element that simultaneously provides shear resistance and compressive strength, eliminating the weak coupling interface and ensuring adequate compressive force transmission.

Inventive Principle:

Principle #5Merging (Combining)

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

Effectively reduces heat loss, enhances structural stability, and prevents thermal bridging by using low thermal conductivity connection tension rebars and shear rebars, while also providing fire resistance through coupling covers.

Implementation Method 1

connection tension rebars which have different thermal conductivity from the first and second tension rebars and that connect the first and second tension rebars

Methodology Applied

Scientific EffectThermal conductivity: Conduction (thermal)

Implementation Method 2

a thermal insulation unit provided between a floor slab and a balcony slab

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS11655631B2Thermal insulation structure having shear rebars and tension bars integrally formed in thermal insulation unit

Publication Date: 2023.05.23 JEONGYANG SG

AI summary

A thermal insulation structure comprises a thermal insulation unit provided between a floor slab and a balcony slab. Tension rebars are formed in parallel in the floor slab and the balcony slab, but are not in the thermal insulation unit. Connection tension rebars which are parallel with each other pass through the thermal insulation unit and connect the tension rebars in the floor slab and the balcony slab. Shear rebars are formed inside the thermal insulation unit to connect and support the connection tension rebars. Auxiliary shear rebars horizontally connect the shear rebars to reinforce support.