Calculation Theory And Finite Element Analysis On Crack Of Concrete Component

There lies some problem in the calculation of concrete crack width, nowadays. The calculation of concrete crack width is very complex, and there are many factors to the cracks, including cracks caused by loads and no-loads. There are not only cracks formed before concrete coagulation, but also formed after concrete coagulation. What's more, nowadays, the cracks caused by no-loads more and more influenced the use and economic performance of modern construction. So many departments do some researches in this place. The former calculation equations are mainly derived from experiments, that is to say the equations depend too much on experiments, but scare systematic theoretic analysis. Just as engineering college of Nanjing, they did plenty of experiments, and calculation equations they deserved from experiments date fits for majority condition. But it is experimental after all. Because the experiments are limited by experiment condition, load-on method, material nature, etc. So there is no equation can reflect all the practical conditions. If we statistic lots of experiments results together, then the dispersion degree is too high. So many norms adopt the minimum value as the calculation equation to ensure safety. As a result, it requires combing theoretic analysis to be more practicalThe articles generalizes research results of the recent 50 years, and put forward calculation theory on concrete components based on concrete mechanics, also apply finite element method to do some analysis. Then apply the result to the construction of text on concrete mechanics, in order to provide a flat form for future study and exchange. The main objective regarding to the concrete structure is to build the curriculum into the reflection on concrete structure newest research results, manifests national level registration structural engineer to take a test, and adapts "the big construction" about the career development, has the bilingual education function high-quality goods curriculum. The present paper research content should be as follows.The first part is namely summarize, which has done the simple introduction of the background and study method of this article, and has put forward the research meaning of the subject.The second parts is the concrete component crack computation mechanics analysis, apply the constitutive equations and slipping theory of concrete, and so on, carries on the entire process analysis from mechanics angle to the concrete component crack computation;The third part is based on the standard and the experimental achievement research, mainly introduced the design method and the structure request of the standard, and carries on the comparison with this article method, simultaneously uses the ANSYS careful analysis, in addition also introduced the domestic and foreign concrete standard design side and the structure request as well as its diversity;The fourth part is the network curriculum text design as well as its development significance and the method of "Concrete mechanics", uses the existing tool and the correlation technology, founds " Concrete mechanics" initially the curriculum website, provides the debarkation system and the forum, and so on, the interactive content, and proposed the website construction tentative plan with a unit under pressure knowledge structure drawing;The fifth part is the conclusion and the forecast, the achievement which makes to this article makes the further summary, and asks the pending research question.