Bridge-building machine monitoring system: aerial ballet conductor with a thousand-ton beam body-Weite Technology Co., Ltd.

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1. The special challenges of tightrope walking at high altitude

2. The cliff evolution of core monitoring technology

3. Survival mechanism of extreme environments

4. Digital prophet of Intelligent Early Warning

5. Intelligent enchantment of Life Protection

At the scene of the high-speed bridge-building in Taihang Mountain, the monitoring screen suddenly flashed with red light: the reaction force of the front outrigger increased sharply by 218%! The system instantly activated the accident chain deduction-the leakage of the jacking cylinder of Pier 2 caused the cap beam to be overloaded. The intelligent hub performs a five-level response within 0.6 seconds: pause the beam falling action, activate the multi-point hydraulic balance, and enable the Beidou positioning check. When the emergency team opened the jacking mechanism, 15 liters of hydraulic oil had leaked, but the tilt of the beam body was controlled within 0.03°. This crisis intervention above the 100-meter deep valley interprets the spatial control of the modern bridge-building machine monitoring system. 

Bridge-building machine monitoring system

1. The special challenges of tightrope walking at high altitude

When the bridge-building machine erects a thousand-ton beam body between the cliffs and deep valleys, it faces a unique combination of risks.：

◉The "Three-body problem” of the outrigger system

Unbalanced four-point support: The load deviation of 0.5% produces 480 tons·meters of torque at a span of 40 meters.
Deformation trap of flexible piers and columns: The elastic deformation of the thin-walled high pier can reach 13 cm during the erection process
Accident on a canyon bridge: The front outrigger collapsed and the temporary support pad caused the bridge-building machine to overturn.

隐形 The invisible killer of wind vortex

Wind speed mutation in the canyon area: Level 3 wind jumps to level 7 within 10 seconds
Early warning of critical point of flutter: The risk of pneumatic instability of the main beam under a specific angle of attack has increased sharply

生死 Synchronization of life and death of multi-machine collaboration

When the dual-machine lifts the 700-ton T-beam, the lifting speed difference is >2 cm/min, which induces violent swing.
Yingtan Railway Bridge Incident: Synchronous failure caused the T-beam to collide in the air

2. The cliff evolution of core monitoring technology

▶ Spatial attitude perception matrix

Micron-level calibration in three-dimensional space

Beidou +laser combination positioning：
- Beidou positioning: plane accuracy ±3 mm, elevation accuracy ±5 mm
- Laser scanning: establish a three-dimensional point cloud model of the main beam, and the deformation monitoring accuracy is ±0.5mm
Inclination sensor array: 16 sets of biaxial inclinometers are arranged on the front and rear legs, with a resolution of 0.001°
Dynamic compensation for windy environment：

True coordinates =measured value +K×V2×sin (2φ) (V: Wind speed θ: wind direction angle)

▶Closed-loop monitoring of outrigger force flow

Digital balance for force balance

Split pressure sensor column: Strain rings are implanted in each outrigger cylinder, with a range of 0~5000 tons
Force flow equalization algorithm：
- Hydraulic compensation is triggered when the load difference of the outrigger is >3%
- Start attitude adjustment when the deformation and displacement difference is >5 mm
Application case of Qinghai-Tibet Plateau: Successfully cope with the fulcrum settlement caused by the melting of permafrost

▶ Optical surgery for beam body docking

Precise control of millimeter-level falling beams

Laser tunnel guidance technology: Establish parallel laser datums on both sides of the cover beam
Intelligent fine-tuning jacking system：
- X/Y position error>2 mm: start lateral hydraulic fine-tuning
- Elevation error>1 mm: start graded jacking
Actual measurement of Wuhan Yangtze River Bridge: The difference between the butt joints of the 2000-ton box girder is controlled at ±0.8mm

3. Survival mechanism of extreme environments

流体 Fluid game in the canyon wind field

Dynamic angle of attack control system

Boundary layer weather radar: Three-dimensional scanning of the structure of the 3-kilometer wind farm in front of you
Active pneumatic wing: Adjustable flaps are installed on the top of the main beam
- Wind speed>12m/s: expand the deflector to change the pneumatic shape
- Carmen vortex is detected: activate the energy-consuming damper
Hengduan Mountain Practice: Suppress the flutter effect and improve the wind resistance level 2

形 Deformation and domestication of flexible high piers

Digital mirror image of steel-mixed structure

Fiber grating sensor network: 384 monitoring points are implanted in the piers to capture micro-strain
Predictive jacking algorithm：

Compensation amount =Σ (cumulative deformation of the first 3 holes) ×0.83 +real-time temperature correction
Chongqing Mountain Case: Successfully offset the creep during the construction period of the thin-walled pier

光学 Optical revolution in night construction

Millimeter operation in dark night conditions

Laser depth of field enhancement system: Power 30W green laser penetrates rain and fog obstacles
Infrared thermal image positioning technology: Identify the edge of the cover beam through the difference in concrete heat dissipation
Zheng Wan's practice of High-speed rail: Complete the precise erection of the 12-hole box girder in the fog

4. Digital prophet of Intelligent Early Warning

▶ Multi-dimensional deduction of structural risks

Digital twin Catastrophe Sand Table
In the deep-middle channel bridge-building project, the system previewed thousands of accident scenarios：

Input parameters：

{Wind speed 12m/s, outrigger settlement 5mm, load 2400t}

Deduction result：

→ The stress overrun area of the rear outrigger: at the web of the lower beam

→ Safe operation threshold: load reduction by 15% + side shift speed limit by 50%

Automatically generate maintenance plans

▶ Sound and healthy acoustic diagnosis and treatment

Stress wave monitoring of high-strength bolts

Arrange piezoelectric ceramic sheet arrays at key nodes
Capture 1-5MHz stress wave propagation characteristics：
- Loose bolts: 0.8-1.2HZ characteristic frequency band energy surge
- Fatigue cracks: Increase in propagation delay ≥0.5µs
Hong Kong-Zhuhai-Macao Bridge Application: 48 hours in advance warning of loose main beam connection bolts

▶ Edge intelligence without fear of disconnection

Terminal system for autonomous survival

On-board communication backup: Beidou RDSS Short Message + Tiantong satellite dual channel
Local decision engine: Automatically execute the preset security policy when the network is disconnected
Sichuan-Tibet Railway case: The 3-hole beam frame is still completed after the communication in the canyon area is interrupted.

5. Intelligent enchantment of Life Protection

的 Energy barrier for border work

Three-dimensional anti-falling matrix in the air

Millimeter wave radar builds a virtual fence
Personnel approaching the danger zone by 1.5 meters: the equipment automatically slows down by 30%
Invade the 0.8-meter core area: trigger an emergency shutdown
Hangzhou-Shaoyong Expressway Project: 2.3 million consecutive working hours with zero falling accidents

智能 Intelligent guardian of hypoxia on the plateau

Linkage control of vital signs

The cab is equipped with blood oxygen monitoring cushion
Altitude>3500 meters and blood oxygen
Continuous operation for more than 2 hours: forced into rest mode
Practice on the Qinghai-Tibet Plateau: The accident rate of altitude sickness decreased by 92%

Conclusion：Bridge-building machine monitoring systemIt is a symphonic poem of science and technology between the abyss and the canyon. 

During the erection of the Nu River Bridge in 2024, there was a sudden risk of damage to the support sand box. The system completes the extreme intervention within 0.8 seconds: Beidou positioning captures the settlement of the front outrigger by 27 mm, the hydraulic balance system instantly raises the counterweight of 600 tons, and the laser guidance corrects the beam body displacement. When the kiloton beam hovers over the broken support pad, the displacement sensor shows that the settlement has exceeded 80 mm-this is a precise intervention of 1 second, creating a safety myth of modern bridge construction.

From the millimeter beating of the Beidou coordinates to the micron compensation of the hydraulic cylinder, this system allows the steel giant arm to have a “digital instinct” in the clouds and canyons. When the last hole beam landed accurately in the morning mist, the sound of the collision of Helong on the bridge deck not only announced the completion of the project, but also a safety declaration in the era of intelligent construction. It carries the dream of a transportation powerhouse, and a monument of wisdom has been erected among the deep gullies and giant gullies.