科研之友
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摘要
Laboratory equipment was designed and implemented to study the effect of water pressure on reinforced concrete structures. They included a pressure vessel, a video monitoring system, and a pressurizing system. Then, the hydraulic testing facility at the University of Toronto was brought into operation. The facility is capable of testing model offshore structures under high water pressure. A one-seventh-scale model of a buoyancy compartment of a small offshore oil platform was designed and constructed as a pilot specimen. Two pilot tests were carried out using the same pilot specimen to study its behavior. The failure water pressure was approximately three times the design pressure. At failure pressure, a major circumferential crack in the cylindrical shell near the slab-shell connection was formed. At this pressure, uncontrollable water leakage through large concrete cracks associated with steel yielding occurred. The concrete in compression was capable of preventing water flow through concrete cracks until the steel yielded. Post-yielding capacity of a section was unreliable in preventing water flow.
- 出版日期2016-10
