Bridge Foundation Research: Dynamic File Monitoring, Karst Conditions and Flowable Backfill. Executive Summary

摘要

The report summarizes the findings of a three-year research project to enhance bridge foundation design and construction by PennDOT. It was determined that PennDOT should be conducting dynamic pile monitoring using the Pile Driving Analyzer to improve monitoring procedures. A qualified testing agency should conduct the testing to provide the appropriate level of operator proficiency. Specifications were prepared for use of dynamice pile monitoring on PennDOT projects. A guide was prepared for foundation engineering which delineates appropriate exploration and foundation selection approaches for structures inthe karst areas of Pennsylvania. It was concluded that flowable backfills are a good approach to backfilling excavations, trenches, and structures. Specifications were prepared for use.