堤防工程混凝土溢流堰底板与堰身结合处局部裂缝加固处理技术研究

Research on Reinforcement Technology for Local Cracks at the Joint of Concrete Overflow Weir Bottom Plate and Weir Body in Embankment Engineering

现有的加固处理技术沉降量分布不均匀,堰体抗滑稳定系数不符合标准,为此,文章深入研究了堤防工程混凝土溢流堰底板与堰身结合处局部裂缝的加固处理技术。具体而言,通过计算背水坡与迎水坡的边坡稳定性应力值,设置具体堤防允许值。处理裂缝表面,选择合适的钢板进行粘贴。根据裂缝的具体情况确定修补范围,将预先制备的砂浆灌入混凝土,在浆液中添加溶剂以增加浆液黏度,使填筑效果更明显。对钢筋进行除锈处理后涂抹防锈材料再填充密封材料修补裂缝。测试结果表明,5组测试的沉降量结果均在-30 mm以内,沉降变化较均匀。在不同工况下,堰体抗滑稳定系数均在规范安全系数参考范围(1~1.5)内,满足设计要求,达到了良好的加固效果,增强了堤防工程的防水性和耐久性。

The existing reinforcement treatment technology has uneven distribution of settlement,and the anti sliding stability coefficient of the dam body does not meet the standards.Therefore,this article conducts in-depth research on the reinforcement treatment technology of local cracks at the junction of the concrete overflow dam bottom plate and the dam body in embankment engineering.Specifically,by calculating the slope stability stress values of the upstream and downstream slopes,specific allowable values for embankments are set.Treat the surface of cracks and select suitable steel plates for pasting.Determine the repair scope based on the specific situation of the cracks,pour the pre prepared mortar into the concrete,and add solvents to the slurry to increase its viscosity,making the filling effect more obvious.After rust removal treatment,apply rust proof material to the steel bars and then fill with sealing material to repair cracks.The test results show that the settlement values of the 5 groups of tests are all within-30 mm,and the settlement changes are relatively uniform.Under different working conditions,the anti-skid stability coefficient of the dam body is within the reference range of the safety coefficient in the specification(1~1.5),meeting the design requirements,achieving good reinforcement effect,and enhancing the waterproofing and durability of the embankment project.