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上庄新闸闸室基础为砂含卵砾石层,地震时存在液化问题;同时砂层渗透性较强,砂颗粒在高水头的长期作用下,容易沿底板产生接触冲刷流失,从而危及建筑物安全。两岸翼墙基础为粉质黏土、砂质粉土,抗剪强度较低,墙体存在不均匀沉降、抗滑稳定等问题。就以上问题提出闸基采取振冲碎石桩、混凝土防渗墙及CFG桩等处理措施。
On the base of the sandstone gate lock chamber, there is liquefaction problem during the earthquake. At the same time, the permeability of the sand layer is strong. Under the long-term action of the sand head, the sand particles are likely to cause contact erosion loss along the bottom plate, thus endangering the building safety . The foundation of the two wings is silty clay, sandy silt, low shear strength, uneven settlement of the wall, anti-skid stability and other issues. Based on the above questions, we propose that the foundation be treated with vibro-impact gravel piles, concrete cutoff walls and CFG piles.