Structural Testing Case Studies

Case Study - 1

Structural Testing - Large Scale Multi-functional Structure Testing System

The large-scale multi-functional structure test system is mainly used for the structural performance test of full-scale structures of super-high buildings, subways, airport terminals, large-span bridges and other infrastructure components or large scale models below 1: 8 to obtain complete and reliable structural performance test data. It is can also be used in the field of structural seismic performance research and testing.

This 10,000kN computer-controlled electro-hydraulic servo large-scale multifunctional structure test system is specially customized for Hong Kong Polytechnic University. It has a vertical loading capacity of 1,000 tons and a horizontal loading capacity of 150 tons. The system is fitted with Popwil proprietary active follow-up control system that can compensate side load from both vertical and horizontal actuators.

Main Specifications:

Maximum vertical compression force: 5000kN - 12000kN; Maximum vertical tensile force: 2000kN - 4000kN
Maximum horizontal test force: ± 1500kN
Horizontal and vertical active follow-up servo actuators for side load compensation from main vertical and horizontal actutators.
Test space: 3200 × 2500 × (1000 ~ 4500 adjustable) mm
Easy test space height adjustment with the press of a button

User: Hong Kong Polytechnic University

Users of similar system

Zhejiang University of Technology

Shenzhen University

Shanghai University of Applied Sciences

Shenyang Jianzhu University

Case Study - 2

Structural Testing - 112,000kN Multi-functional Combined Loading Structure Test System

Main Specifications:

Maximum add-on compression force: 72,000kN;
Maximum add-on tensile force: 20,000kN;
Original compression force: 40,000kN;
Combined compression force: 112,000kN
The add-on 72,000kN compression loading system adopts a closed-loop control loading for 0 - 60,000kN. From 60,000kN - 72,000kN, the system adopts closed-loop differential pressure load control.
Equipped with front & back lateral force countering system as well as electro-hydraulic servo deflection control system for the main frame. It can prevent front & back roll as well as controlling the angle of left & right deflection.
Maximum height of test specimen: 5.15m;
Minimum height of test specimen: 4.15m;
the height of the piston in the middle position: 4.65m, the height of the loading space: 3.75m.
Maximum loading space: 1.3m (W) x 2m (L);
Actuator stroke: ± 500mm;
Speed: >5mm/min
System comes with specimen transport system for convenient test setup.

User: Beijing University of Technology

Extended application of 112000kN multifunctional combined loading structure test system

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Case Study - 3

Structural Testing - Omnidirectional Space Node Loading System

Main Specifications:

Fully enclosed spherical load-bearing reaction frame with guide rail system to adjust the installation position of the actuator in the spherical reaction frame. 6 ultra-high-pressure actuators provide a closed-loop control loading to the specimen.
Five loading actuators with a maximum compressive load of 6,000kN can be installed in anywhere in the 3-dimension space for the mechanical performance test on complex structures.
Maximum compression force in the vertical direction is 12,000 kN and the maximum tensile force is 8,000kN.
Remaining four actuators in any direction can achieve a maximum compressive force of 6,000kN and a maximum pulling force of 4,000kN.
The device uses a hollow sphere as a reaction force bracket. The test specimen inside the sphere can be setup to withstand loading in all directions. The direction of the applied load basically covers the entire space of the whole sphere, while leaving enough space for the test specimen, connection wires and hydraulic pipeline.

User: Zhejiang University

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Case Study - 4

Structural Testing - NUS 20,000kN Capacity Servo-hydraulic Testing System

Main function:

To achieve axial static compression or tensile loading test on column specimen.

Main Specifications:

Maximum compression force: 20,000kN;
Maximum tensile force: 6,000kN
Maximum speed: 30mm/min
Stroke: ± 250mm
Test space: 4000 × 2000 × (1500 - 4500) mm.
Adjustable crossbeam height (3 different configurations)

User: National University of Singapore

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Case Study - 5

Structural Testing - 500-2000 Tons Large Multi-functional Structure Test System

Main Specifications:

Maximum vertical compression force: 5,000kN - 30,000kN
Maximum vertical tensile force: 200kN ~ 6,000kN
Maximum horizontal thrust force: 200kN ~ 4,000kN
Test space: 4000 × 2500 × (1000 - 4500) mm;
Height adjustable
Can be customize according to test requirement

User: Shanghai Jiao Tong University, Nanjing Tech University, Changzhou Institute of Technology Xinbei Campus, Nantong University, Zhongzhou University

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Case Study - 6

Structural Testing - Large Scale Seismic Load Simulation Loading Device

Main Functions:

To achieve pseudo-static load testing when axial and lateral force acts on the test specimen simultaneously.
Lateral force loading is separated from the axial force loading.
Direct measurement of actual lateral force and axial force applied to test specimen.
Horizontal loading: ± 4,000kN (two 2,000kN servo actuators)
Stroke: ± 400mm
Vertical loading: Maximum compression force of 20,000kN (four 5,000kN servo actuators)
Stroke: 500mm

User: Hunan University

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Case Study - 7

Structural Testing - 500 Tons Large Scale Multifunctional Structure Test System

Main function:

This self-reaction frame structure is able to achieve stepless adjustment of the test space height through the use of hydraulic clamping device. The frame is capable of axial static loading and horizontal low-cycle repeated loading on beams, columns, walls, frames and node specimen.

Main Specifications:

Maximum compression force: 5,000kN;
Maximum tensile force: 3,000kN
Maximum horizontal force: ± 1000kN
Test space: 4000 × 2500 × (1000 - 4000) mm;
Stepless adjustment
Proprietary horizontal and vertical active follow-up servo actuators to compensate vertical and horizontal side load on the test specimen.

User: Xi'an Jiaotong-Liverpool University

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Case Study - 8

Structural Testing - Large Scale Multi-functional Structure Testing System

Main Function:

Vertical static compression and tensile loading test on beams, columns, slabs, walls, frames, nodes and other structural componenet.

Main Specifications:

Usage of load-bearing foundation to provide vertical reaction force, and reaction wall for lateral reaction force.
Maximum vertical compression force: 4,000kN;
Maximum horizontal thrust force: 1,000kN;
Test space: 4000 × 2000 × (1000 - 4000 adjustable) mm
Equipped with specimen loading aids.

User: China Academy of Building Research

Users of similar system

Xuzhou University of Technology

Xiamen University

Chang'an University

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Case Study - 9

Structural Testing - Self-reacting Electro-hydraulic Servo Loading System

Main Function:

Vertical static compression and tensile loading test on beams, columns, slabs, walls, frames, nodes and other structural componenet.

Main Specifications:

Usage of self-reacting load frame to provide reaction force support.
Maximum vertical compression force: 6,000kN
Maximum horizontal thrust force: 1,000kN
Test space: length 3,000mm × height 3,000mm
Equipped with specimen loading aids.

User: Beijing University of Civil Engineering and Architecture

Users of similar system

Shenyang University of Technology

Tongji University

Xingtai Polytechnic College

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Case Study - 10

Structural Testing - Feed-through Electro-hydraulic Servo Loading System

Main Function:

Tests for bending of normal section and destruction of diagonal section of reinforced concrete simply supported beams are completed.

Main Specifications:

Usage of feed-through electro-hydraulic servo actuator for vertical loading.
Usage of reaction wall for two directional loading on test specimen.
Maximum vertical compression force: 2,000kN / group
Maximum horizontal force: 1,000kN
Test space: Horizontal test space can be adjusted arbitrarily according to the test requirement; vertical test space can be adjusted arbitrarily by changing the feed-through screw length.

User: Tongji University

Users of similar system

Beijing University of Civil Engineering and Architecture

Shandong University of Science and Technology

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Case Study 11

Structural Testing - Educational Purpose Civil Engineering Testing Equipment

Main Function:

For either destructive or non-destructive bend test on reinforced concrete beam.

Main Specifications:

Convenient crossbeam height adjustment can be achieved with screw-type loading frame system
Maximum vertical compression force: 500kN
Maximum span: 2,000mm;
Maximum test height: 2,000mm
Electro-hydraulic servo control
Complete set of load frame for reinforced concrete beam testing (including distribution beams, span supports, anchorage, etc.)

User: Zhejiang University of Water Resources and Electric Power

Main Specifications:

Self-reactive load frame with height adjustable crossbeam
Maximum vertical compression force: 500kN
Maximum span: 2,500mm;
Maximum test height: 1,000mm
Electro-hydraulic servo control
Complete set of load frame for reinforced concrete beam testing (including distribution beams, span supports, anchorage, etc.)

User: Changzhou Institute of Technology Xinbei Campus

Main Function:

This self-reacting load frame is able to conduct structural static test and dynamic test.

Main Specifications:

Equipped with one 100kN vertical loading actuator and two 50kN horizontal loading actuators
10L/min servo-electric hydraulic system
Three channels electro-hydraulic servo controller
Maximum vertical compression force: 100kN
Maximum horizontal thrust force: 50kN

User: Xuzhou University of Technology

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Case Study - 12

Structural Testing - Single Degree of Freedom Electric Vibration Table

Main Function:

The single degree-of-freedom electric vibration table uses a computer-servo motor motion control system. The aluminum alloy table is installed on a linear guide rail with very low friction coefficient. The system can be used for teaching demonstration, as well as seismic testing on small structure.

Main Specifications:

Working frequency: 0.01Hz - 20Hz
Stroke: ± 100mm
Acceleration: up to 1g
Maximum load: 200kg - 2000kg
Output waveform: sine wave, random wave, earthquake simulation
Table size: length 1,000mm x width 800mm
(Can be customized according to test requirement)

User: Nanyang Technological University, Shenzhen University, Wuhan University of Technology, Jiangnan University, Zhejiang University of Technology, Anhui University of Science & Technology

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Case Study -13
Customization and Retrofit

Structural Testing - Heavy Duty Six Degrees of Freedom Swing Platform for Offshore Wind Power Operation and Maintenance Equipment

A proof of concept dual six DOF platform designed and manufactured by Popwil was officially accepted by the Ocean College of Zhejiang University in September 2019. That pave the way for a new joint research and development contract with a marine engineering company to design and manufacture heavy duty six degree of freedom sea state simulating platform.
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The heavy-duty 6-DOF swing platform is designed to testing other 6-DOF swing platforms which will be installed on the offshore wind power operation and maintenance ships which can work under degree 5 state of the sea on the Douglas sea scale. After test, qualified platform will be installed on ship to balance the ship movement due to the wave, and build a bridge from the ship to the offshore wind power tower or other offshore platform. The function of the bridge is to transfer people and goods with a six-degree-of-freedom wave compensation function. It is widely used in offshore wind power, offshore oil prospecting and military-civilian integration docking and rescue operations.

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