预应力混凝土污泥消化池受力性能研究

为了研究总结圆柱形预应力混凝土污泥消化池的设计经验，对郑州市王新庄污水处理厂污泥消化池进行了预应力施工阶段和试水阶段的原型监测试验，并采用三维混凝土有限元方法进行了分析计算，结果表明：三维有限元分析计算和原型检测结果符合良好，池壁混凝土在预应力作用下沿高度方向和环向的应力分布规律与内水荷载作用下沿高度方向和环向的应力分布规律相同但拉压应力相反，预应力施工阶段和使用阶段池壁混凝土局部存在的拉应力值在设计允许的范围内，在满水闭气试验时池壁混凝土基本处于环向和竖向压应力状态，对影响池壁混凝土应力分布均匀性的主要因素进行了分析。

Study on behavior of prestressed concrete sludge digestion tank

To summarize the experiences from the design of the cylindrical prestressed concrete sludge digestion tank,the prototype test and the three-dimensional finite element analysis made on the sludge digestion tank during the construction stage of the prestress application to the concrete and the water filling test of Wangxinzhuang Sewage Treatment Plant in Zhengzhou City are introduced herein,and then the factors affecting the uniform distribution of the stresses along the height and circumferential direction of the concrete wall are studied as well.