Development of guidelines for transportation of long prestressed concrete girders.
-
2016-12-01
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final report
-
Corporate Publisher:
-
Abstract:This research study investigates the behavior of two long prestressed concrete girders during lifting and
transportation from the precast yard to the bridge site, with a particular focus on cracking concerns
during transport. Different response measurements were recorded, including dynamic strains, dynamic
accelerations, rigid body motion measurements, thermal, and girder location using GPS tracking. The
monitoring results indicate that higher tensile strain events occurred during transport of the girders than
during lifting of the girders at the yard or bridge site. Local events during transportation of both girders
produced strains that exceeded the theoretical cracking strain determined by the research team. Potential
cracking events were not associated with high dynamic accelerations; instead, they occurred at lowspeed
(<10 mph) sharp turns (90 deg. with tight radii) where the jeep tongue was attached to the girder.
Based on analysis of the girders in this study and previous related research, cracking strains were
readily experienced during girder transport and prior to erection. This research presents technical data
obtained from two long prestressed concrete girders during transport and handling.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
File Type:
Supporting Files
-
No Additional Files
More +