Study On Monitoring Theory And Analysis Method With Morbid Change & Damage Concrete Dam

Dam safety monitoring model is important to analyze and evaluate the operation properties of the dam. In this paper, it is studied on monitoring theory and analysis method with morbid change & damage concrete dam.1) Dependability of survey data is more influence the result of analysis data in dam safety monitoring. They are important in evaluating and monitoring dam safety that analyzing gross error of data and correct choosing its model. It is efficiency to detect gross error of data with gray-regression and time series-combination model. Precision of fitting the data's curve is higher, when it is treated with the model. It is more reasonable for explaining and evaluating of the behavior of dam archetype structure.2) The essence of concrete's morbid change and damage will reduce concrete material's mechanics ability. Deduced it, it is possible to expatiate its evolvement rule and principle. From material microstructure, it is of real signification that is based on model of concrete temperature and damage under the temperature load.3) The concrete temperature damage model is presented by method of studying concrete rupture mechanics and microcosmic mechanics. In the view of the concrete's minute construction, cement and mortar encircled bone, there is tiny crack on interface of bone and mortar under temperature load. And then it is provided in temperature field the equation of concrete damage and temperature evolvement.4) Damage finite element, which can be calculated by rupture-damage finite element program, is applied to arch dam to calculate damage field and stress field with damage character considered. In this program temperature damage developing equation is presented.3) The determinacy model of crack on the basis of the advanced theories, mathematics and mechanics principle in concrete dam. After analyzing observation data in space-time, calculating construction and analyzing models in practice project, it is analyzed that the cracks of concrete appear principle and enlarge rule.