Bridge & Tunnel logo Bridge & Tunnel Engineering Hanoi University of Civil Engineering

Bridge testing and consulting

Load testing, inspection and monitoring of bridges and tunnels since 1959: more than 500 bridges tested and inspected by the group, with its own laboratory since 2005.

Bridge and Tunnel Engineering Laboratory, Hanoi University of Civil Engineering
Bridge and Tunnel Engineering Laboratory, set up in 2005

Services

Static and dynamic load testing

Assess the load-carrying capacity of a bridge with real test loads; measure stresses, deflections and dynamic characteristics.

When: Acceptance of new bridges, after repair or strengthening, or to set the permitted traffic load.

You receive: Test programme, measurement and assessment report, recommended service load.

Inspection and assessment of bridges in service

Condition survey, detection and assessment of damage, re-calculation of structural capacity.

When: Deteriorated bridges, after incidents, load upgrading, maintenance and repair planning.

You receive: Inspection report, condition and remaining-life assessment, repair or strengthening proposals.

Structural health monitoring

Monitoring of vibration, strain and cable force with vibrating-wire sensors, computer vision and UAVs.

When: Cable-stayed and long-span bridges, underground structures during construction or service.

You receive: Monitoring plan, periodic data, analysis reports and alerts.

Material and structural testing

Laboratory tests of material samples and members, including ultra-high performance concrete (UHPC).

When: Verifying new materials, members or structural solutions before use.

You receive: Test records and reports.

Design consulting and design review

Advice on bridge and tunnel structural solutions, independent design review to TCVN 11823:2017.

When: Projects needing an independent expert opinion, a new structural solution or special construction methods.

You receive: Review report, expert opinion, consulting documents as agreed.

Commissioned research

Research on industry problems: deep-learning damage detection, digital twins, cable-force identification, UHPC.

When: Companies developing technology, technical guidelines or new products for infrastructure.

You receive: Proposal, research report, products and technology transfer under contract.

How we work

  1. 1
    Send a request

    Fill in the form below, email or call us.

  2. 2
    Discussion and site survey

    Clarify objectives and available documents; site survey when needed.

  3. 3
    Programme and quotation

    Technical programme, schedule and quotation for your review.

  4. 4
    Execution

    Load testing, measurement, monitoring or laboratory tests to the agreed programme.

  5. 5
    Report and acceptance

    Delivery of the report, explanation of results and acceptance.

From Phủ Lỗ Bridge to Rạch Miễu Bridge

The group has load-tested and inspected more than 500 bridges. Some of the structures the group has designed, built, load-tested or inspected:

Load testing, inspection

Mỹ Thuận Bridge

Took part in the design, load testing and inspection.

Load testing, inspection

Thuận Phước Bridge

Inspection and load testing.

Load testing, inspection

Other major structures

Took part in the design, load testing and inspection of the Cần Thơ, Bãi Cháy, Thanh Trì and Nhật Tân bridges and the Hải Vân tunnel.

Inventions, technology · 2005⁠–⁠2006

Rạch Miễu Bridge

Equipment for erecting the spans and pylons. First Prize of the Ministry of Transport Youth Creativity Award; Second Prize of VIFOTEC.

Inventions, technology · 1996

Rubber expansion joints

Made in Vietnam for the first time.

Design, construction · 1998⁠–⁠2000

Sông Hàn swing bridge

Took part in the design of the swing span.

Design, construction · 1992

Bến Chang Bridge

Carried out the internal-force adjustment of the composite bridge.

Design, construction · 1974⁠–⁠1976

Đakrông Bridge

Took part in building the first cable-stayed bridge in Vietnam.

Design, construction · 1960⁠–⁠1962

Phủ Lỗ Bridge

Took part in the design and construction; the first prestressed concrete bridge in northern Vietnam.

Equipment, staff and standards

The Bridge and Tunnel Engineering Laboratory was set up in 2005 for load testing, monitoring and inspection of bridges and tunnels. Lecturers of the group sit on the State Acceptance Council for construction works.

Standards and guidelines applied and drafted: TCVN 11823:2017; technical guidelines for UHPC bridges.

  • Strain and stress measurementSDA-830C dynamic strain meter, TDS 303 static strain data logger (30 channels), P-3500 strain indicator and SB-10 switch and balance unit.
  • Deflection and displacement measurement
  • Vibration and dynamic-property measurement
  • Cable and stay-cable force measurementVibrating-wire sensors, identification of cable forces.
  • UAV and computer-vision surveys
  • Material and member testingOriginal Schmidt rebound hammer, Tico ultrasonic tester, Profometer 5 rebar detector, ELE crack-detection microscope.
Selected project record

Testing of a strut-supported box-girder segment (Ring Road 2 project)

ProjectProject to build the elevated road along Ring Road 2, Vĩnh Tuy Bridge – Ngã Tư Sở section, under a BT (build–transfer) contract.
InvestorVingroup Joint Stock Company.
Project management consultantProject Management Unit 2.
Design consultantVietnam Expressway Consultant Joint Stock Company (VECC).
Supervision consultantAsia Pacific Engineering Consultant Company (APECO).
Construction contractorJoint venture of Trung Nam Erection and Construction JSC (Trung Nam EC) and Trung Chính Trading and Construction Co., Ltd.

Technology: the project applies a new technology — prestressed concrete box girders whose top-flange cantilevers are widened using inclined steel struts — used for the first time in Việt Nam.

Scope of inspection: checking the construction technology for prestressed concrete box girders with flanges widened by inclined steel struts; checking the requirements for concrete mix design and girder concrete grade, and checking that construction complies with the specified dimensions and technical specifications.

Original post (VI)

Laboratory equipment

Main instruments of the laboratory, used for load testing, inspection and monitoring of bridges.

Original Schmidt rebound hammer

Model: Original Schmidt · Quantity: 2 · Origin: Proceq, Switzerland

  • Measuring range: 10 MPa – 70 MPa
  • Weight: 1.5 kg
  • Impact energy: 2.207 Nm (Type N) and 0.735 Nm (Type L)

ELE 35-2505 crack detection microscope

Model: ELE 35-2505 · Quantity: 1 · Origin: ELE International, United Kingdom

  • Measuring range: 4 mm
  • Scale division: 0.02 mm
  • Magnification: ×40
  • Dimensions: 40 × 90 × 150 mm
All specifications (5)
  • Weight: 550 g

Tico ultrasonic instrument

Model: Tico · Quantity: 1 · Origin: Proceq, Switzerland

  • Display: 128 × 128 LCD screen
  • Memory: 250 readings
  • Measuring range: 15 – 6550 µs
  • Resolution: 0.1 µs
All specifications (9)
  • Input impedance: 1 MΩ
  • Operating temperature: −10 °C to +60 °C
  • Power supply: 6 × 1.5 V batteries, for 30 hours of use
  • Dimensions: 325 × 295 × 105 mm
  • Weight: 3.4 kg

SDA-830C digital dynamic strain meter

Model: SDA-830C · Quantity: 1 · Origin: TML, Japan

  • Number of channels: 8 channels
  • Measuring range: ±25000 ×10⁻⁶ strain
  • Frequency range: 10 kHz
  • Operating temperature: −10 °C to +50 °C
All specifications (6)
  • Dimensions: 298 × 100 × 260 mm
  • Weight: 6 kg

TDS-303 static strain data logger

Model: TDS 303 · Quantity: 1 · Origin: TML, Japan

  • Number of channels: 30 channels, expandable to a maximum of 1000 channels
  • Memory: up to 130000 data points
  • Measuring range: ±160000 ×10⁻⁶ strain
  • Measuring speed: 0.06 or 0.08 s/channel
All specifications (8)
  • Accuracy: ±(0.05% rdg + 1 digit)
  • Operating temperature: 0 °C to 45 °C
  • Dimensions: 320 × 140 × 440 mm
  • Weight: 9 kg

Profometer 5 rebar detector (cover meter)

Model: Profometer 5 · Quantity: 1 · Origin: Proceq, Switzerland

  • Display: 128 × 128 LCD screen
  • Memory: 40,000 readings stored in 63 test files
  • Operating temperature: −10 °C to +60 °C
  • Probe cable length: 1.5 m
All specifications (8)
  • Data cable length: 1.5 m
  • Power supply: 6 × 1.5 V batteries, for 45 hours of use
  • Dimensions: 463 × 365 × 107 mm
  • Weight: 2.6 kg

SB-10 switch and balance unit

Model: SB-10 · Quantity: 1 · Origin: Vishay, USA

  • Number of channels: 10
  • Dimensions: 228 × 152 × 152 mm
  • Weight: 2.5 kg

P-3500 portable strain indicator

Model: P-3500 · Quantity: 1 · Origin: Vishay, USA

  • Measuring range: ±19,999 µε at gauge factor < 6.000; ±(6.000/GF) × 19,999 µε at gauge factor > 6.000
  • Compatibility: suitable for 120 Ω and 350 Ω strain gauges
  • Accuracy: 0.5%
  • Resolution: 1 µε
All specifications (8)
  • Number of channels: 5
  • Power supply: battery or 220 V mains
  • Dimensions: 228 × 152 × 152 mm
  • Weight: 2.9 kg

Send a request

Contact details
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