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原文传递 Field Performance of Timber Bridges. 19. North Yarmouth Stress-Laminated Truss Bridge; Forest Service research paper

题名：	Field Performance of Timber Bridges. 19. North Yarmouth Stress-Laminated Truss Bridge; Forest Service research paper
作者：	Dagher, H. J.; Altimore, F. M.; Caccese, V.; Ritter, M. A.
关键词：	Structural timber; Bridges; Load bearing tests; Performance evaluation; Maine; Design; Construction; Monitoring; Wood moisture; Truss
摘要：	The North Yarmouth bridge was constructed in the spring of 1994 in NorthYarmouth, Maine. The bridge is a single-span, two-lane, stress-laminatedtruss structure that is approximately 39 ft long and 32 ft wide. The truss laminations were produced using chromated-copper- arsenate-(CCA-)treated Southern Pine connected with metal plate connectors. This report includes information on the design, construction, and field performance of the bridge. Performance of the bridge was monitored for approximately 4 years, beginning shortly after bridge construction. During the field-monitoring program, data were collected related to the wood moisture content, the force level of the stressing bars, behavior under static truck loading, and overall structure condition. Based on 4 years of field evaluations, the bridge is performing well with no structural or serviceability deficiencies.
总页数：	26p
报告类型：	科技报告