Based on the principle of layer-wise summation method calculated settlement,a theoretical method has been deduced to calculate settlement and rotation of block wall of gravity quay for dry construction,and the calculated values of settlement and rotation are compared with measured values on trial section of gravity quay.The results show that calculated values are consistent with measured values of settlement and rotation of block wall;the values of settlement and rotation increase with the increase of blocks layers;after the wall backfill and the wall preloading load,the settlement of the toe of the wall continues to increase,and the settlement of the rear of the wall is decreased;the rotation of quay wall becomes greatest after preloading.In the project of gravity quay,the theoretical calculation method can be applied to calculate settlement and rotation and evaluate preloading effect of quay wall in advance,and estimate preset slope of cast-in-situ concrete blinding.