Prestressed concrete culvert pipe with great cross-section and its making method

Application Number: 00102732
Application Date: 2000.02.22
Publication Number: 1271643
Publication Date: 2000.11.01
Priority Information:
International: B28B23/08
Applicant(s) Name: Feng Dabin
Inventor(s) Name: Feng Dabin;Wang Zhile;Chen Zhong
Patent Agency Code: 11100
Patent Agent: xu ning
Abstract A prestressed concrete culvert pipe with great cross-section is composed of the culvert pipe body formed with skeleton made of reinforcing bars and concrete, and features that the unbonded prestressing tendons are segmentally and longitudinally arranged on the said skeleton. Said prestressing tendon enhibits an ellipsoidal shape on the radial cross-section of culvert pipe body. Its major axis is positioned on horizontal central axis of culvert pipe body and its minor axis is on vertical axis. The ends of each prestressing tendon are in turn seal-fixed on two symmetrical points near the wall of culvert pipe body. Its advantages are simple technology, no need of large equipment, elongating service life of culvert pipe and low cost.