QX/T 588-2020 in English
VALIDTechnical requirements for steel tower of weather radar
- Issued on:2020-12-29
- Implemented on:2021-04-15
- File Format:PDF
- Delivery:Via email within 1~3 business days
$224.00
| Standard No: | QX/T 588-2020 |
| Document status: | VALID |
| Title in English: | Technical requirements for steel tower of weather radar |
| Title in Chinese: | 天气雷达钢塔技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-12-29 |
| Implemented on: | 2021-04-15 |
| Professional Classification: | QX-Meteorology |
| Related Keywords: | steel tower
radar tower standard technical dimensions qx/t588-2020 requirements comparison technical requirements shanghai a steel tower project |
| Related Topics: | Gas phase technical requirements
Gas Phase + Technical Requirements Centennial Radar serial radar gas phase tower reach Centennial Radar Radar industry weather radar meteorology Radar level gauge installation requirements Medium frequency radar antenna Radar International Radar Enterprise qx/t-2020 qx/t 567-2020 |
Introduction
Analysis of core requirements of the standard
| Technical dimensions | QX/T588-2020 requirements | Comparison with GB50135-2019 | Key differences |
|---|---|---|---|
| Design reference period | 50 years | 30-50 years | Use upper limit standard |
| Structural form | Self-supporting space truss | Unrestricted form | Explicitly prohibit guyed towers |
| Displacement control | H/300 | H/250 | 20% accuracy improvement |
Key technologies for structural design
The standard requires that the steel tower adopt a polygonal space truss structure with an even number of sides, and the axis of the rods must intersect at the node. In actual projects, it is recommended to use a regular octagonal section, which has a wind load coefficient that is about 15% lower than that of a hexagonal section.
Case Study of Radar Tower on Chongming Island, Shanghai
A steel tower project of a C-band dual polarization radar was designed using this standard:
- Tower height 45m, foundation depth 8m
- Q355B steel material, node bolts grade 10.9
- The measured first-order frequency is 1.25Hz, which meets the requirement of >1Hz
Key points of seismic design
The standard stipulates that the seismic fortification category is generally Class C, but it should be noted that:
- The main structure influence coefficient must be considered when built on the top of a building
- Seismic verification of the foundation must be carried out
- Performance-based design refers to Chapter 17 of GB50017
Special requirements for construction acceptance
| Phase | Control indicators | Detection method |
|---|---|---|
| Pre-assembly | Node gap≤2mm | 3D laser scanning |
| Installation | Verticality≤H/1500 | Total station measurement |
| Acceptance | Azimuth deviation＜0.125° | Radar calibration test |
Implementation suggestions
Design stage
It is recommended to adopt BIM collaborative design, and focus on checking:
- Fatigue performance of the platform support structure and column connection nodes
- Electromagnetic compatibility of strong and weak current spacing in the power well
Construction phase
Wind-induced vibration monitoring must be carried out, and high-altitude operations should be suspended when the wind speed is greater than 10m/s. It is recommended to adopt:
- Tower crane attached climbing system
- Modular segmented lifting process
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