Fireproof Plate Groove Fixation for Tunnel Integrity
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Solution Overview
Problem
Existing fireproof materials for undersea tunnels have inadequate fire resistance, short lifespan, and are prone to aging and falling off, posing risks to tunnel integrity and safety.
Innovation Solution
A fireproof material composed of aluminosilicate, magnesium oxide, silica, calcium carbonate, binder, and curing agent, forming particles of 0.5-8 mm diameter at high temperatures, mixed with bentonite and pressed into a mold under high pressure and temperature to create a fireproof plate with a groove-type connecting member for secure fixation, offering high strength, low density, and self-cleaning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fireproof plate is fixed on the tunnel concrete member using a hanging element, then the fireproof plate can be installed, but it is prone to aging and falling off with short life span
Solution Approach 1:
The invention removes the hanging element from the system entirely. Instead of fixing the fireproof plate to the concrete member through a separate hanging component, the fireproof plate is directly formed as an integral part of the concrete member during the concrete pouring process, eliminating the aging and failure issues associated with separate fixing components
Solution Approach 2:
The fireproof plate and concrete member are merged into a single integrated structure. The fireproof plate is embedded within the concrete member during construction, creating a unified composite structure where the fireproof plate and concrete work together as one system, improving both reliability and service life
2Reliability
If fireproof coating is applied on the concrete surface, then fireproofing is provided, but it has poor fireproofing effect and is easy to fall off
Solution Approach 1:
The invention uses a composite structure where the fireproof plate is made of fireproof material and is embedded within the concrete member. This composite construction provides reliable fireproofing effectiveness while the integral bonding eliminates adhesion issues that cause coatings to fall off
Solution Approach 2:
The invention removes the separate fireproof coating layer from the system. Instead of applying a coating that can detach, the fireproof function is integrated directly into the structural concrete member through the embedded fireproof plate, eliminating the adhesion problem entirely
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
The solution provides a fireproof plate with high strength, low density, and long service life, ensuring high temperature resistance, corrosion resistance, and meeting requirements for waterproofing, fireproofing, and heat insulation, while being easy to install and maintain, and environmentally friendly.
Implementation Method 1
the mixture of aluminosilicate, magnesium oxide and silica forms particles with diameters of 0.5-8 mm at 900° C.-1250° C.
Implementation Method 2
the above-mentioned particles are then mixed with calcium carbonate, the binder and the curing agent, and then poured into a forming mold, heated and pressed to form the material
Data Source
AI summary
Disclosed are a fireproof material, a fireproof plate, a fireproof wall structure for tunnels and a construction method. The fireproof material includes the following components in weight ratio: 20-35 parts of aluminosilicate; 10-25 parts of calcium carbonate; 5-15 parts of magnesium oxide; 5-15 parts of silica; 20-40 parts of a binder; and 5-10 parts of a curing agent, the binder includes at least one of lithium silicate, potassium silicate and sodium silicate in combination with at least one of quartz sand and industrial sugar; and the curing agent is at least one of lithium oxide and magnesium oxide. In the preparation, firstly forming the mixture of aluminosilicate, magnesium oxide and silica into particles at 900° C.-1250° C., and then mixing the particles with calcium carbonate, the binder and the curing agent, and then pouring same into a forming mold and heating and pressing to form the fireproof material.