Optimization research of anchor block cavity thickness in pre-stressed pier

The pre-stressed pier anchor block cavity thickness has been carried on optimized analysis. Three kinds of different cavity thickness have been calculated. The stress of pier neck and anchor block cavity surface have been analyze. Anchor block was similar to two deep beam after seting cavity. Tensile stress of upstream surface increased with the thickness of deep beams decreased under arc door force. Tensile stress of downstream surface increased with the thickness of deep beams reduced under anchor force. The result indicated that cavity thickness can´t be set too large.