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A steel pipe positioning device for connecting the embedded section at the arch foot of a steel tubular arch with the lifting segment_01
A Multi-directional Coordinated Rotary Fixed Bridge Bearing_02
A Multi-Directional Coordinated Rotating Fixed Bridge Bearing_01
A Multi-Directional Coordination Type Rotating Unidirectional Bridge Bearing_01
A Road and Bridge Crack Reinforcement Structure_01
A telescopic device with adjustable steel plate anchoring components 6729_1_01
Jia Kan Institute – An Intelligent Safety Cone for Use in Highway Tunnels and Its Method of Use_01
Safety Risk Early Warning and Digital Management Method for Tunnel Construction in Karst Cave Sections—South African Patent No. 01
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