Evaluation of Construction Loads in Multistory Concrete Buildings

摘要

Construction loads in a multistory flat plate concrete building were measured using strain-gaged metal shores and an analog recorder. The instrumented shores were placed within an interior bay of the third story under the formwork for the fourth story floor slab, and loads on the shores were measured continuously over a 24-hour period during the casting and partial curing cycle of that slab. The loads on some of these shores, when subsequently used as reshores in the same bay, were measured during an 8-hour period which included the casting of the fifth story floor slab. A time-lapse camera, operating synchronously with the load data acquisition system, gathered simultaneous photographic evidence of the construction activities during load monitoring periods. This report presents a complete documentation of the field data in compact form for subsequent use in related studies. The load data is interpreted and compared with construction load and design provisions of current standards.