How to minimize construction risk in structural steelwork?

2025-03-27 16:37:30

Construction risk control of Steel Structure project is a systematic project involving the whole life cycle, which needs to build a multi-level protection system from four dimensions: design optimization, process innovation, intelligent monitoring and management synergy. Below are the six core control strategies and specific implementation paths:

I. Digital preview and design optimization

BIM Collision Detection

Autodesk Navisworks is used to conduct 3D model collision detection, discovering and eliminating more than 90% of structural conflicts in advance. The Hong Kong-Zhuhai-Macao Bridge project reduces on-site rework by 35% through digital preassembly, and a super-high-rise steel structure project uses this technology to compress the installation error from ±10mm to ±3mm.

Finite element simulation analysis

ANSYS is used to simulate the stress of complex nodes and optimize the connection of components. During the construction stage of Shanghai Center Building, 27 node designs were corrected through simulation analysis to eliminate the risk of stress concentration.

Intelligent Mold Matching System

AI-based automatic formwork generation system was developed, which was applied to the Hangzhou Asian Games Stadium steel structure project to reduce the amount of overhead mold-supporting work by 40% and reduce the risk of falling.

Material and process innovation

Automated Welding Technology

With the introduction of six-axis welding robot cluster, the U-rib welding of Hsu-Su-Tong Yangtze River Bridge realizes 100% full-penetration weld, which reduces the welding defect rate from 5% to 0.2%. Equipped with infrared thermal imaging real-time monitoring system, which can instantly capture temperature anomalies.

High-precision Positioning Technology

Adopting the intelligent measurement and control system of Beidou+5G, the steel tower lifting of Nanjing Jiangxinzhou Yangtze River Bridge realizes millimeter-level positioning, and the verticality deviation is controlled within 1/4000.

Modularized Integral Installation

The Shenzhen-Zhongshan Corridor project adopts a 12,000-ton floating crane to carry out the overall lifting of 4,000-ton steel box girders, which reduces the length of overhead work by 70% compared with the traditional segmental installation, and avoids 80% of the risk of adjacent work.

Intelligent Monitoring and Early Warning System

Structural Health Monitoring (SHM)

Optical fiber grating sensors are deployed at key nodes to monitor stress and deformation data in real time. 5,000+ monitoring points are set up during the steel structure construction phase of Canton Tower, and the early warning response time is shortened to 15 seconds.

Drone Inspection System

Equipped with thermal imaging + LiDAR drone cluster, full-dimensional scanning is completed 3 times a week during the steel structure construction of Ping An Financial Center in Shenzhen, and crack detection efficiency is increased by 20 times.

AI Risk Early Warning Platform

Developing a risk prediction model based on machine learning, a project of China Construction realized 72-hour advance warning of collapse, fire and other major risks through historical data training.

Standardization of safety protection

Assembled Protection System

Promoting standardized steel operation platforms, a Chongqing Raffles project applies modular protection racks to reduce the accident rate of falling from height by 60%. Equipped with intelligent safety belts with positioning and vital signs monitoring functions.

Intelligent lifting control

Developing intelligent anti-collision system for lifting machinery, establishing a three-dimensional safety protection network through UWB positioning technology, reducing lifting accidents by 90% after application in a shipyard project.

Environmental monitoring linkage

Establishment of wind speed, temperature, humidity multi-parameter warning mechanism, Shanghai Hongqiao Hub project set up 15 weather stations, when the wind speed exceeds 8 automatically suspend lifting operations.