Title: Measurements of rotational stiffness for precast concrete girder transport vehicles, part 2
Date Published: July - August 2024
Volume: 69
Issue: 4
Page Numbers: 30 - 44
Authors: C. Shawn Sun, Adam D. Sevenker, and Mostafa Abo El-Khier
https://doi.org/10.15554/pcij69.4-03

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Abstract

This paper presents field measurements of the rotational stiffness of three transport vehicles equipped with different types of suspensions: leaf, combined air and leaf, and hydraulic suspensions. The rotational stiffness was determined by measuring the tilts of the vehicles when a girder or known weights were placed on them at various eccentricities. One of the tested vehicles, which featured transversely expandable wheel spacings varying from 6 to 18 ft (1.8 to 5.5 m), exhibited an increase in rotational stiffness from 78,181 to 134,584 kip-in./radian (8833 to 15,206 kN-m/radian). This paper summarizes the rotational stiffness for all the vehicles tested by the authors. The field measurements conducted have enriched the existing database on vehicle rotational stiffness in the United States.