A precast beam tensioning anti-collapse chamfering device
By using a combination of detachable chamfered modules and strain sensors during the tensioning process of precast beams, the problem of concrete spalling caused by stress concentration at the bottom of the precast beam ends was solved. This increased the load-bearing area at the beam ends and dispersed the stress, improving the quality and production efficiency of precast beams. It also features reusability and real-time monitoring capabilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN ROAD & BRIDGE CONSTR GROUP
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-03
AI Technical Summary
During the tensioning process of precast beams, stress concentration at the bottom of the beam ends can cause concrete to crack. Existing technologies are difficult to prevent this effectively and also have problems such as complex installation, high cost, and poor reusability.
The detachable chamfered module is fixed to the bottom of the beam end of the template body through connectors. The chamfered module is a right triangle with the beveled surface forming an inclination angle of 15°-60° with the template body. The segmented combination structure, combined with the auxiliary anchoring system and strain sensor, realizes stress dispersion and real-time monitoring.
It significantly increases the stress-bearing area at the bottom of the beam end during precast beam tensioning, effectively preventing concrete spalling, improving the quality and production efficiency of precast beams, reducing production costs, and providing reusability and data support functions.
Smart Images
Figure CN224446347U_ABST