摘要
受水荷载作用后,钢板桩围堰结构易产生渗水或大变形,导致施工难度增大,甚至引发工程事故.通过开展钢板桩围堰止水性能试验,对比分析了钢板桩在无止水材料、含沥青类材料或含膨胀性止水材料三种情况下的止水效果,结果表明:在透水层厚t=50 cm时,若钢板桩锁扣处无止水材,其换算透水系数为0.1~1 cm/s;若在锁口处涂抹止水材料,钢板桩整体换算透水系数小于1×10^(-6)cm/s,但钢板桩锁口处局部透水量有一定区别.结合某钢板桩围堰工程实际应用,针对钢板桩止水施工中可能遇到的问题,给出并实施了具体措施.
The seepage and large deformation will happen after the structure of steel sheet pile cofferdam receiving water loads. These may make engineering construction more difficult.Test of sealing performance for steel sheet pile cofferdam is carried out.There are three different ways of sealing in this test; they are pure steel sheet pile,steel sheet pile with gilsonite and similar sealing materials,steel sheet pile with expansible sealing materials. Thesealing effects of these sealing ways are contrasted.Results show： as the thickness of permeable bed is 50 cm,conversion coefficient of permeable is 0.1 ～ 1 cm / s in the condition of pure steel sheet pile,while it is less than 1×10-6cm / s in the condition of daubing sealing materials at the force shaft. Different force shafts hold different permeable capacity.According to an engineering practical application of steel sheet pile and some problems happened in sealing construction,some measures are provided and carried out.
出处
《南华大学学报（自然科学版）》
2016年第2期123-128,共6页
Journal of University of South China：Science and Technology
基金
贵州省科技厅工业攻关基金资助项目(黔科合GY字(2009)3029)
关键词
钢板桩
围堰
止水
室内试验
steel sheet pile
cofferdam
water seal
laboratory test
