纵向增强体设计理论在水库工程中的应用

Application of Longitudinal Reinforcement Design Theory in Reservoir Engineering

基于工程实际与设计理论,提出一种由土石坝与混凝土结构组成的新结构,该结构不仅能提高结构的稳定性,还能降低结构的渗透性。针对这种结构,对其强度进行验算,并提出其设计方法。结果表明,坝顶沉降量为3.78 m,最大沉降量为5.98 m。增强体心墙竣工及蓄水时挠度分别为-0.097、4.683 cm,竣工及蓄水时转角分别为-0.005 4、0.037 6 rad,符合设计规范。完建安全系数为1.089,蓄水期安全系数为1.61,小于规范所规定的最小值;增强体心墙安全系数为3.21,安全系数满足规范所规定的最小值,说明在水位骤降期间,增强体心墙的稳定性较好。增强体心墙底部所受应力为0.978 MPa,所受压应力为1.02 MPa,小于规范规定的最小值。

In this paper, a new structure is proposed, which is composed of earth-rock dam and concrete structure. This structure can not only improve the stability of the structure, but also reduce the permeability of the structure. The strength of the structure is checked and the design method is put forward. The results show that the settlement of the dam crest is 3.78 m, the maximum settlement is 5.98 m. The deflection of the reinforced core wall is-0.097 and 4.683 cm when it is completed and stored, and the corner angle is-0.005 4 and 0.037 6 rad when it is completed and stored, which meet the design specification. The Factor of safety is 1.089 and the storage period is 1.61, which is less than the minimum value specified in the code. The factor of safety is 3.21. The factor of safety meets the minimum specified in the code, indicating that the reinforced core wall is stable during the sudden drawdown of water level. The stress at the bottom of the reinforced core wall is 0.978 MPa, and the compressive stress is 1.02 MPa, which is less than the minimum value specified in the code.