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1 工程概况 东路渡槽位于锦绣川干渠东路村北,距水库8km处,渡槽全长131m,高36m,系C40钢筋网水泥砂浆U型薄壳渡槽,渡槽支承排架C20钢筋砼结构。 渡槽于1970年建成,经过30多年的运行,槽身排架已程度不同地存在着因保护层碳化引起的筋、网锈蚀病害。2002年5月26日在对该工程进行日常检查时,发现大部分排架因渗漏产生的冻融,造成大面积剥落和纵向顺筋裂缝,4#、5#、6#行排架尤为严重。顺筋裂缝最大宽度达1.2cm,纵向裂缝长为2.57m,深达5～8cm不等。严重影响了工程的正常使用,直接威胁锦绣川水库城市供水和农业灌溉生产。 为使东路渡槽排架加固修复方案切实可行,水库会同山东省水利科学研究院、济南市建设站和历城区
1 Project Overview East Road aqueduct is located in the village north of the village of Jinqu Xichuan canal, 8km away from the reservoir. The aqueduct is 131m long and 36m high. It is a C40 reinforced concrete mortar U-shaped shell aqueduct and a C20 reinforced concrete aqueduct. The aqueduct was completed in 1970. After more than 30 years of operation, there have been different degrees of corrosion of tendons and nets caused by the carbonization of the protective layer in the trough body. On May 26, 2002, during daily inspection of the project, most of the shelves were found to freeze and thaw due to seepage, resulting in spalling in a large area and cracks along the longitudinal direction. The 4 #, 5 #, and 6 # rows were especially well- serious. The maximum width of the incision is up to 1.2cm, and the longitudinal crack length is 2.57m, ranging from 5 to 8cm deep. Seriously affecting the normal use of the project, a direct threat to the Jinxiuchuan reservoir urban water supply and agricultural irrigation. In order to make the Dongfang aqueduct truss reinforcement and restoration plan practicable, the reservoir will cooperate with Shandong Academy of Hydraulic Research, Jinan Construction Station and Licheng District