Reliability Analyse Of Harbor Engineering Structures

According to the requirements of 《The unified standards of reliability design of harbor engineering》 ,it need a reliability analyse for reinforced concrete structure,sheet-pile wharf and gravity wharf of harbor engineering building. First of all, the reliability of reinforced concrete element of harbor engineering with different safety classes,permanent load properties (favorable or unfavorable) and a combination of variable loads are caculated , and the difference of calculated values of reliability index which the structure resistance is expressed with compand random variables and with basic random variables. Comparison results show that the shear reliability of reinforced concrete element is low, and that the difference between reliability of class Ⅱ and class Ⅰ element as well as class Ⅲ and class Ⅱ element is approximately 0.5. The reliability with favorable permanent load is lower than that with unfavorable permanent load for the element with the identical safety class, and the difference is apparent for element when a different resistant expression is used. And then it analyse sheet-pile wharf by using of elastic line method and elastic foundation beam method. By computing four index which involved security of sheet-pile,including extend strength of anchor arm,bend strength of sheet-pile and skirt stability .It can get different result by using of different design method for one caculational example. It list the distribution of moment with different design water level and different load combination. Then analyse the connection of sheet-pile depth in the dust .Reliability level of one calculational example can be calculated by use of two different methods,and find it's result is different too much.But the result can supply theory gist for analyse reliability of sheet-pile wharf and choose a suit of harmonize coefficient.In the last, the dissertation analyse the antidumping stability and antiskid stability for caisson quaywall and then calculate their reliability index.It analyse the difference of reliability between boundary design when load be equal to resisting force and the first design.All of these will provide a reference for design standard and criterion of harbor engineering.