摘要
为检验南水北调中线总干渠沙河渡槽结构质量、安全情况,按照预定方案开展了全段渡槽充水试验工作。试验共发现槽身裂缝、止水缝、施工缝及螺栓孔四类质量问题造成的渡槽质量缺陷72处,总体上混凝土施工与止水安装质量较好,发现的质量缺陷不影响工程结构安全,对其进行混凝土灌浆和表面封闭处理后,渡槽结构能够满足正常使用要求。充水试验期间,对渡槽变形及应力应变进行了全面监测,最大挠度2.90 mm,最大沉降量18.72 mm,最大沉降差5.53mm;沙河渡槽预应力槽身结构在各工况下均处于受压状态,普通钢筋混凝土槽身结构应力应变均在允许范围内。充水试验证明,沙河渡槽整体结构安全稳定,在各设计工况下均处于平稳运行状态。
The entire section of aqueduct water filling test work was carried out according to the scheduled plan for checking the quality and security of Shahe aqueduct structure of South-to-North Water Diversion Project. In the test,72 quality defects were found out caused by four types of quality problems,such as groove crack,water stop seam,construction seam and bolt hole. As a whole,the quality of concrete construction and sealing was good and quality defects did not affect on the engineering structure safety. Aqueduct structure could meet the requirements of normal use after comprehensive concrete grouting and surface processing. In the overall monitoring of aqueduct deformation and the stress-strain during the water filling test,the maximum deflection was 2. 90 mm,the largest settlement was 18. 72 mm and the maximum differential settlement was 5. 53 mm. Shahe aqueduct prestressed tank body structure was in compression state under various operating conditions,and the stress-strain of ordinary reinforced concrete tank body structure was within the scope of the permit. Water filling test shows that the whole Shahe aqueduct structure is security and stabile,and is operated smoothly under the design conditions.
出处
《人民黄河》
CAS
北大核心
2015年第8期126-128,共3页
Yellow River
关键词
充水试验
结构可靠性
沙河渡槽
南水北调中线工程
water-filling test
structure reliability
Shahe aqueduct
Middle Route Project of South-to-North Water Diversion
作者简介
陈晓光（1980-），男，河南西平人，工程师，主要从事水利水电工程设计工作。E—mail：36978840@qq．com
