混凝土裂缝化学灌浆压力模拟与合适压力探讨

摘要

在混凝土裂缝灌浆过程中，为了解灌浆压力在裂缝中的分布情况，将混凝土裂缝化学灌浆看作一个流体力学问题来求解。根据流体力学的基本原理，采用目前国际上广泛应用的fluent软件，对灌浆过程中裂缝不同部位的压力分布状况进行了数值模拟。结果显示，在不同灌浆方式和离灌浆口不同距离的条件下，灌浆压力的沿程衰减和压力大小是不同的，据此对合适灌浆压力进行了探讨。该成果可在一定程度上用于指导灌浆施工。%In the grouting of concrete cracks, to understand the distribution of grouting pressure in cracks, the chemical grou-ting is considered as a hydrodynamic issue. According to the basic theories of hydrodynamics, the stress distribution in different parts of the cracks was simulated and analyzed by using the widely applied Fluent software. The result showed that under different grouting modes, the pressures are different and attenuate with the distance from grouting outlet. On the basis of the simulation a-nalysis, the suitable grouting pressure is discussed.