The Research For The Control Technology Of Cracks Of Cave Dwellings

With the rapid development of economy, environmental pollution has been becoming more and more serious. Environmental degradation has become a worldwide problem, and more and more people began to realize the importance of protecting the environment and maintaining the harmonious development between man and nature. With the growing awareness of ecological issues, it has become an important theoretical and practical significance of the subject that how to make the construction of this living environment with better ecological adaptability.In the process of today's construction industry throughout the world to face the global energy shortage and environmental quality issues, and actively look for energy-saving architectural forms and construction, lots of foreign and domestic scholars and experts have been focusing on the pit courtyard because of its unique ecological advantage.The pit courtyard with local conditions, saving money, warm in winter and cool in summer, blocking the wind and the noise, preventing the shock, simple in construction and other characteristics, in line with ecological principles,is a natural energy-saving building. It is reasonable to create and build cleverly, and there is a natural,harmonious living, which is full of the harmony between human activities and the natural environment.But most pit courtyards also have some of its own structural weaknesses, such as the crack problem.When the crack developed to a certain extent it may lead to the collapse of cave, and endanger the lives and property safety of the residents, thus this paper is the research for crack control technology at the support of the national "Eleventh Five-Year" science and technology support projects(Issue number: 2006BAJ04A02-01),mainly doing the following work:(1)According to a large number of research, the author analyses the fracture characteristics and structural characteristics of the pit courtyard, and classifies all kinds of cracks. (2)Analysis of the form of destruction of cave and the crack formation mechanism is done;a analytical model of the pit courtyard is established according to the actual size of the pit courtyard, and the author analyses the state of the stress and the displacement of the cave, and also analyzes the cave's main structural parameters of the impact of caves.(3)the author analyses a variety of current different reinforced methods, and according to those proposes a new reinforced method, which is named embedded beam reinforced technique of the main research of this paper; the author describes the form of the construction of the embedded beam system in detail, and compares the effect of the reinforced construction with the unreinforced construction, and it has proved to be the validity of this method of reinforcement;and the author develops the construction method of the system of embedded beam.