Evaluation of Vibration Limits and Mitigation Techniques for Urban Construction.

摘要

The overriding purpose of this research was to develop a comprehensive framework to address vibration issues prior to and during construction, including calculation of anticipated ground vibrations during project design, condition surveys of structures, vibration limits, mitigation strategies to control ground and structural vibrations from construction sources, and recommendations for improvement of current FDOT Specifications. Using the field data specific to Florida as collected and sorted over the course of this research, simple equations were developed to calculate the maximum peak particle velocity (PPV) of expected ground vibrations prior to construction operations. This research also provided a comprehensive review of and guidelines for pre-construction condition surveys, analysis of the effects of different factors on vibration limits, accompanied by a comparison of the criteria from diverse sources, a summary of the existing preventive and counteractive vibration mitigation techniques used by the industry, and a review of effective mitigation measures to decrease vibration effects from roadway and bridge construction operations in Florida. Finally, the relevant findings of this research were compiled under Recommendations for Improvement of FDOT Specifications. These recommendations cover a broad base, including pile driving operations and their vibration effects, survey of sites and structures, mitigation measures, calculation of PPV prior to construction, and vibration limits.