Abstract: Aiming at the hard condition of effectively control in the concrete cracks of pier wall in hydraulic structure at the water gate, the ship lock and others. The necessity of the anticrack design was expounded, and the design method of the anticrack hidden beam was discussed by calculation and analysis of the temperature stress of the pier wall. The engineering implementation result shows that to configure pier wall hidden beam rationally can control the concrete cracks effectively in the penetrating cracks in especial .It is an anticrack design method with obvious effects.

Key words: hydraulic structure, pier wall, concrete crack, temperature stress, hidden beam, anti-crack design