Consider Joint Load Transfer The Rigid Pavement Design Theory

Rigid pavement of airport consists of many cement concrete plates. The plates are joined by many joints. These joints can transfer load.In the structure designing of rigid pavement, if the capacity of transfer load of joints is considered, the criterion would be more reasonable and economical. It would be consistent with practice instance.This paper's mostly content is the theories and methods of designing the rigid pavement plates which traversed by moving load and based on elastic half-space foundations The paper also considering the transfer load of joints. Joints merely transfer shearing force and merely transfer moment is respectively considered.By assumption and predigest of foundation model, plates, moving load, a mechanics model of system can be gained. Then base on the model, the dynamic equation of rigid plates can be listed.According to thinking the joints of plates as elastic boundary supports to plates and by using of the method of separation of variables, Betti's reciprocal theorem of work, the solution of dynamic equation can be deserved.At last, the rigid modulus of elastic supports can be educed according to the deform numerical value of rigid plates which is measured in practice.