LS/T 8012-2023
Design specification for air film reinforced concrete dome silo (English Version)

Standard No.

LS/T 8012-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Grain  CN  /  LS

Latest

LS/T 8012-2023

Introduction

Analysis of the core content of technical standards

Technical dimension	Traditional granary	Air-film reinforced concrete silo
Structural form	Brick-concrete/steel structure	Air-film formwork + reinforced concrete thin shell
Single silo capacity	≤5000t	≤10000t
Air tightness standard	500Pa/300s	500Pa/1200s

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Key design parameter requirements

According to Article 6.3.2, the foundation deformation control value must meet the following requirements:
- Average settlement ≤200mm
- Inclination ≤0.004
The structural safety level is designed as Level 2, and the seismic fortification category is Class C.

Key points of process design

The air film silo inlet and outlet system should be arranged symmetrically:
- The high-level release port is ≥5m from the ground
- The low-level release port is ≥0.8m from the ground
The ventilation system must meet the requirements of LS/T 1202, Technical Code for Ventilation of Grain Storage Machinery.

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Structural calculation specifications

Load combinations to be considered:
- Uneven additional load of shotcrete (≥0.75kN/m²)
- Grain load partial factor 1.3
Stability verification safety factor is 6.6 (Article 6.4.4)

Implementation suggestions

1. Ground-type warehouses with a diameter of ≥20m are preferred
2. Electrical equipment must meet IP65 protection level and anti-fumigation corrosion requirements
3. Storage groups should be arranged in single-row/multi-row form with a fire protection distance of ≥3m