Advanced Materials Research Vols. 926-930

Abstract: In this paper, the Beijing 10-line New Gongzhufen station close-attached undercrossing the existing Subway Line 1 Station is taken as engineering background, and studying on the application of the flat-top straight wall Cross Diaphragm (CRD)+ multiple pre-top bracing concealed excavation construction method in the large cross-section metro station closely-attached undercrossing the existing station. The result shows that the construction method can effectively control settlement of the existing station and satisfy the 3mm settlement control indicators of the bottom of the existing station. So the construction method is an applicable value in the construction of the strictly close-attached passing through the existing buildings.

Abstract: In order to study the strength change of high strength concrete shaft lining structure in underground complex environment resisting composite salt damage erosion, C70 high strength concrete test specimens were made and composite salt disaster solutions of different concentrations were compounded. The test results show that the coefficient of compressive strength and flexural strength of high strength concrete increase in early corrosion and then decline. The strength of specimen declines more quickly in higher corrosion solution concentration in latter time. The change law of the flexural strength is more complex than the compressive strength. Composite salt disaster solutions have little effect for no damage high strength concrete.

Abstract: In order to effectively ascertain the failure mechanism of piled wharf affected by slope deformation in earthquake, numerical analysis is conducted by Finite Element Method in this paper. In the computational model, elastic plastic characteristic of subsoil, discontinuous behavior of pile soil interface, and nonlinearity of structure material are considered to conduct seismic computation in time domain. Numerical results show the possible locations of wharf structure which generate cracks and plastic hinges. Some conclusions are drawn and can be reference for engineering design and practical project.

Abstract: With the urban industrialization transforming to post-industrialization development, the negative effect brought about by the removal of old industrial buildings is the ignorance of the history of industrial development, thereby resulting in a waste of resources. With the development of computer technology, information technology and network technology, in the face of the old industrial areas losing produce production capabilities causes a lot of waste idle constructions, people can integrate information through digital means, renovate and reuse resources under complete information processing mechanism and systematically collect information. The application of intellectual and digital technology combined with each other provides a good foundation for the recycle of old industrial buildings resources, so that these representative old buildings resources can be used more widely and efficiently.

Abstract: take the construction of the steel structure work of a certain stadium as an example, summarize the contents such as project general situation, project characteristic and project management, emphatically introduce the general idea of the construction, the construction and management measures of the setting technology of the support tower and the installation technology of the awning steel structure in an effort to guide the similar engineering construction.

Abstract: Setting the late poured band is to solve different settlement between high-rise buildings and to settle the reinforced concrete body temperature--contraction stress. In addition, it effectively avoids the harmful cracks caused by the reinforced concrete body. So it is vital to set the late poured band and organize the correct construction. This paper aims at elaborating types of post pouring belt, construction preparation, construction technique, quality and so on.

Abstract: According to the geological conditions and the surrounding area, the economic and reasonable foundation pit project was carried out, which has obtained favorable supporting effect. The problems in the construction should be found and solved reasonably in time, which was to ensure the normal construction and safety of the foundation pit.

Abstract: The paper discusses the factor and mechanism of the surface deformation caused by shield construction and introduces the process of design and implementation of intelligent prediction system of the surface deformation using BP neural network. It researches the system prediction precision and shows that it is a feasible method to predict the surface deformation.

Abstract: With the maturity of 2D GIS technology, and the development of 3D GIS and digital city, Not only can it browse roaming system, but it is more important in spatial analysis ability. The development of digital city technology for urban planning provides an effective way, with the 3D visualization technology, virtual reality technology and the applied 3D GIS spatial analysis function of 3D digital city construction. The development of the digital city faces the opportunity in this paper under the background of this 3D digital city is put forward the development and implementation of query analysis system.

Abstract: Based on the investigation of a single layer steel structure industry workshop in Baoshan Steel Incorporated Company, the effect of dust overload on the security of single layer steel structural workshop is analyzed, which is the basis of maintenance and monitor of the building. The results show that the dust-load overload 16%, the ratio of resistance-load of roof truss, bracket and framework column separately reduce 4%,4%,0.5%. If the dust-load overload 100%, the ratio of resistance-load of roof truss, bracket and framework column separately reduce 20%, 20%,1%.