Soil-Covered Vertical Tank Buffering Layer Design
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Solution Overview
Problem
Current fully-vertical tank soil-covered structures face instability and poor anti-explosion performance due to complex stress conditions and large soil volume, leading to potential collapse and damage during explosions, with no effective measures to address these issues.
Innovation Solution
A fully soil-covered structure design incorporating a base layer, slope body filling soil, and a buffering layer, where the buffering layer provides enhanced energy absorption and stress reduction, ensuring stability and anti-explosion protection by absorbing shock waves and counteracting static pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complete soil covering is adopted for the vertical tank body, then the anti-explosion performance and protection effect are improved, but the side slope becomes steeper and the stress condition of the overall structure becomes more complex, leading to potential instability and collapse
Solution Approach 1:
The patent divides the filling soil into two distinct segments: slope body filling soil forming the outer slope structure, and buffering layer material filling the gap between the tank body and slope body. This segmentation allows each material to be optimized for its specific function - the slope body for structural stability and the buffering layer for stress absorption and tank body protection.
Solution Approach 2:
The buffering layer acts as an intermediary element between the tank body and the slope body filling soil. It absorbs and buffers the stress changes transmitted from the soil to the tank body, preventing direct stress transmission that would cause damage to the tank structure while maintaining the integrity of the complete soil covering.
2Reliability
If complete soil covering is adopted for the vertical tank body, then the protection effect is improved, but the stress load on the tank body increases, causing deflection and damage
Solution Approach 1:
The buffering layer serves as a stress-absorbing intermediary between the slope body and tank body. It has higher energy absorption efficiency and buffers stress changes, preventing the full stress load from the complete soil covering from being transmitted directly to the tank body, thereby reducing deflection and damage risks.
Solution Approach 2:
The patent changes the physical parameters of the filling materials by using different materials with different properties for the slope body and buffering layer. The buffering layer material is specifically selected for its higher energy absorption efficiency and ability to buffer stress changes, fundamentally altering how stress is transmitted to the tank body.
3Reliability
If complete soil covering is adopted for the vertical tank body, then the anti-explosion effect is improved, but the soil-covered structure is prone to fracture, collapse and sedimentation
Solution Approach 1:
The patent segments the filling soil into slope body filling soil and buffering layer material, allowing each segment to be optimized for its specific requirements. The buffering layer is specifically designed to prevent fracture and collapse by absorbing stress changes, while the slope body provides the bulk protective coverage.
Solution Approach 2:
The patent employs a composite structure combining two different filling materials: slope body filling soil for structural support and buffering layer material for stress absorption and protection. This composite approach enhances the overall strength and stability of the soil-covered structure, preventing fracture, collapse, and sedimentation while maintaining anti-explosion effectiveness.
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 design enhances the integrity and stability of the soil-covered structure, effectively reducing stress loads on the tank body, preventing deflection and damage, and ensuring a robust anti-explosion effect, while maintaining structural stability and preventing collapse.
Implementation Method 1
a buffering layer, the buffering layer being formed in the first filling gap and the second filling gap, a buffering material filling the first filling gap and the second filling gap to wrap an outer surface of the vertical tank body, and the buffering layer having higher energy absorption efficiency than the slope body filling soil and being used for buffering a stress change between the vertical tank body and the slope body filling soil
Data Source
AI summary
A soil completely-covered structure includes a base layer, slope body filling soil and a buffering layer; the base layer is arranged around a vertical tank body and is made of a base material located on a ground floor, and a first filling gap is formed between the base layer and an outer wall of the vertical tank body; the slope body filling soil is arranged on the base layer, a second filling gap is formed between the side of the slope body filling soil and the outer wall of the vertical tank body, and a side slope surface is formed on the outer side of the slope body filling soil; and the buffering layer is formed in the first filling gap and the second filling gap, and the buffering material fills the first filling gap and the second filling gap to wrap the surface of the vertical tank body.