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岗南水库增建溢洪道的挑坎基础抗滑桩属于大体积混凝土结构物。在设计中,按照极限平衡法,采用具有双斜滑动面的抗滑稳定计算公式进行计算;在施工中,由于采取综合温度控制措施,故较好地解决了温度应力问题。通过结构模型试验、埋设观测仪器监测和三维有限元温度应力分析,揭示了抗滑桩桩体温度及应力的分布规律,为今后大体积混凝土基础工程的设计和施工提供了有益的经验数据。岗南工程成功的实践表明,抗滑桩是解决基础深层抗滑稳定的一项有效工程措施。
Gangnan reservoir spillway to build additional spillway foundation anti-slide piles belong to the mass concrete structure. In the design, according to the limit equilibrium method, the sliding stability calculation formula with double inclined sliding surface is used for calculation. In the construction, due to the integrated temperature control measures, the temperature stress problem is solved well. Through the structural model test, embedded observation instrument monitoring and three-dimensional finite element temperature stress analysis, the distribution rule of anti-slide pile temperature and stress is revealed, which provides useful empirical data for the design and construction of massive concrete foundation engineering in the future. The successful practice of Gangnan Project shows that anti-slide piles are an effective engineering measure to solve the deep foundation anti-sliding stability.