Railway Engineering Research Institute of China Academy of Railway Sciences Corporation Limited

Other

Wang, Jijun

Jijun Wang

Yong Zhao

Cheng Jiang

Jia Fan

Weibin Liu

Xianggang Du

Ziqing Jiang

Meng Wang

Ruilin You

Youming Zhao

Lu Chunfang

Chunfang Lu

According to some embodiments of this disclosure, a smart sports protective apparatus comprises: a base body device for covering at least a part of a user's body to relieve an impact of an external force to at least the part of the user's body when the user is playing sports; a circuit device for collecting user data, including the user's biological data, motion status data, and body gesture data, from the user in real time when the user is playing sports, at least a part of the circuit device being arranged inside the base body device; and a power supply device for supplying an electric power to the circuit device, the power supply device being arranged inside the base body device.

Smart sports protective apparatus including user data collecting circuit

A ballastless track system comprises a base; a track slab arranged above the base; a poured-field layer arranged between the base and the track slab, the poured-field layer being formed by filling self-compacting concrete, emulsified asphalt cement mortar or resin mortar, and the inside of the poured-field layer being of a steel bar structure; a connecting piece, the first end of the connecting piece extending into the track slab, and the second end of the connecting piece extending into the poured-field layer; and two rows of rail-seat arranged on the track slab in parallel; and rails arranged on the rail-seat. The ballastless track system is high in reliability, good in durability, and easy in construction and maintenance.

Ballastless track system

Provided in the disclosure is a pre-stressed concrete track slab of slab-type ballast-less track, which includes a slab body (), on which fastening embedded casings () are arranged. At least one row of longitudinal common steel bars () and at least one row of transverse common steel bars () are arranged in the slab body () along a length direction and a width direction. The longitudinal common steel bars () are insulated from the transverse common steel bars (). At least one row of longitudinal pre-stressed steel bars () and at least one row of transverse pre-stressed steel bars () are fastened in the slab body () along the length direction and the width direction through anchor backing plates and fastener devices (). In the pre-stress directions of the longitudinal pre-stressed steel bars () and the transverse pre-stressed steel bars (), it is post-tensioned in both directions or it is pre-tensioned in one direction and post-tensioned in the other direction. Limiting structures () and grounding terminals () are also arranged on the slab body (). The pre-stressed concrete track slab has the characteristics of light structural dead weight, small structure height, low manufacturing cost and deformation resistance.

Pre-stressed concrete track slab of slab-type ballast-less track

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Beijing, China

Jijun Wang