Practical Study On Durability Of Open Type Wharf On Piles

The open type wharf on piles is a structure which is suitable for various complex foundation, which result in widely using in port engineering. However, it also has serious durability.A lot of structures has showed serious durability problems,which cause the structure can’t meet the requirements of bearing caPacity and which cause the displacement of structure can’t meet the requirements. At present, the study for the durability of reinforced concrete structure in material and component level is relatively mature, but the theory on the durability of whole structure is not perfect and there is no defined structure durability failure. The accurate methods which are based on the complex probability theory and mathematical derivation can not be mastered by general design personnels;The simpler methods which rely on expert’s subjective intention are not very accurate.Therefore,basing on the mature study for the durability of reinforced concrete structure in material,the Paper puts forward a practical assessment method of durability on the structure caPacity and deformation.Piled wharf three-dimensional model is established in each discrete point,which work out the structure internal force responses.In each discrete point,the response will generate the assessment index of the structure for the durability on safety and usability,which will conSolidate into the failure assessment diagrams of the structure for the durability on safety and usability.Then,it can date each envelope diagram form the failure assessment diagrams,which is the envelope diagram of the whole structure for the durability on safety and usability.Finally,the Paper work out the final envelope diagram form the front two envelope diagrams,which is used for durability evaluation of the whole structure.Also,the final envelope diagram can predicte service life of the structure by durability failure criterion.