东平湖石洼分洪闸抗滑稳定加固设计

Stability Design Against Sliding of Dongping Lake Flood Diversion Sluice

石洼分洪闸闸室抗滑稳定加固是该闸除险加固设计的主要内容之一,通过分析闸室现有桩基水平承载能力及抗滑稳定计算复核得知,该闸抗滑稳定不满足设计要求,需采取加固措施。对比分析了接长底板打桩和重新将废弃的阻滑板与闸底板进行柔性连接两个加固方案,结果表明:阻滑板柔性连接方案通过对变形缝的综合处理和采取多项防水、防蚀措施,保证了连接的可靠性、灵活性和耐久性;与当前工程中常用的打桩加固方式相比,该方案在工程造价、施工方式以及技术可行性、措施的合理性和技术创新方面具有明显的特点和优势。

Stability design against sliding is one of the major contents of reinforcement of Dongping Lake flood diversion sluice. After calculation and analysis for the pile foundation＇ s horizontal bearing capacity, the stability against sliding was not satisfied the design requirements and needed to take reinforcement measures. By comparison study for two schemes that lengthening foundation floor with piling and soft-connection between ex- isting anti-sliding slab and foundation floor, the soft-connection seheme can ensure reliability, flexibility and durabihty by setting deformation joint with comprehensive treatment and taking several water proof and anti-erosion measures. The soft-connection scheme has significant characteristics and advantages on investment cost, construction mode and in technical feasibility, measure＇ s rationality and innovations.