Development of Blast Response Limits for Load-Bearing Prestressed Concrete Panels Using Full-Scale Shock Tube Test Data

摘要

Blast response limits have traditionally been used for predicting the level of protection that structural components provide to buildings susceptible to explosion effects. These limits are usually derived from a combination of post-incident damage indicators, test data, and supporting dynamic analysis. Such limits do not exist for load-bearing prestressed wall panels, largely due to the lack of available full-scale test data. This paper presents design response limits for load-bearing prestressed concrete wall panels based on a series of full-scale shock tube tests and dynamic analysis. The panels tested included 6-inch thick solid prestressed concrete panels and prestressed concrete insulated panels with 3-inch thick wythes separated with two inches of rigid insulation. Static axial loads were sustained on the top of the panels in the dynamic shock tube tests, ranging from 5 and 10 percent of the gross static axial capacity of each wall. The proposed limits are intended for use with non-linear single degree of freedom analysis methods.