Advanced Materials Research Vols. 889-890

Abstract: The concept of ancient tiled structure is the basic condition of our traditional building with good seismic performance ; wooden frame structure with rigid and flexible dual characteristics is lightweight, high strength ductile frame structure , this architecture is to tenon use leading technologies to form a series of structural wood architecture seismic important technical defense to tenon technology form the basis for the brackets is a key component parts of ancient buildings earthquake disaster . In addition , bases and roofs of ancient buildings of good design is important to form an auxiliary seismic capacity .

Abstract: The interaction of a double-tube parallel tunnel excavation will have a larger additional shearing action on the adjacent pipelines. This paper, taking 202 Section of Line 2 on Dalian Metro as the background, uses the finite difference software to establish 3-D finite element analysismodel to simulate the double-tube parallel tunnel excavation. Deformation of adjacent pipelines is analyzed specially by numerical simulation of tunnel excavation and also the safety of the pipelines is forecasted. The conclusions and advices are important to design and guide the actual project construction safety.

Abstract: Concrete U-shaped beam consists of driving deck and the two side beams. Concrete U-shaped beam is a kind of low height bridge. The application of concrete U-shaped beam is in highway and city bridge. It has a good potential application in low for medium span highway construction and for the height of concrete girder bridge construction. To the continuous U-shaped beam,based on the nonlinear finite element method, with the help of appropriatel element to simulate the concrete and steel, prestressed effect can be achieved in the body. At the same time, the cracking, yielding and crushing of concrete nonlinear change could be described through appropriate criteria. Combined with practical engineering calculation results shows that common reinforced steel is pressed n the early period, but fastened in the late period. The deflection of prestressed reinforcement is in linear elastic growth in the early period, growth is small, but deflection develops rapidly in the later period until structural failure. In this paper, a reliable calculation method is provided by researching the mechanical properties for prestressed concrete continuous U-shaped beam.

Abstract: The historic centre of Morelia, Mexico has over a thousand architectonic monuments catalogued. This allowed the city to become part of the list of world heritage site by UNESCO in the 90s of 20th century. The location of Michoacan, the State in which Morelia is the capital, allowed it to have an abundance of acidic extrusive igneous rocks such as the ignimbrite quarry stones. The ignimbrites were carved into blocks to build vertical elements such as the walls and the foundations. Cases of carved and sculpted blocks were not designed to be coated with mortars, non sculpted ignimbrites were used in the case of buildings that were designed to carry coatings mortars and/or paintings; constructions in which the time to build was small, the money was scarce or the destination was not particularly important. These monuments are colonial ones, the European brought building techniques in vogue in Europe; books written by Vitruvius, Palladio and Alberti were adapted to local conditions as ethnic and regional materials and costumes. Ignimbrites, after exposed to the environment have begun to damage on the blocks posted as facades. In cases of severe exfoliation or acute devitrifying of the matrix in the ignimbrites, it is necessary to replace the damaged blocks by healthy rocks earned from the quarry stones of the surrounding places but it has not been able to find full match between rocks; sometimes do not match the resistance, porosity, durability, color or geographical location in the historical archives. Results to date show matches and the discrepancies between the different quarry stones and uses that are targeting in heritage buildings.

Abstract: Repairing of past earthquake-damaged members that are highly susceptible to future attack is necessary to prevent civil infrastructure destruction and consequent lives lose.Sprayed basalt FRP composite was tested and presented here as a promising solution.In this study, three 1/2 scaled reinforced concrete frame columns were used to investigate the effectiveness and feasibility.One column was damaged to failure and used as a reference specimen.The other two columns were damaged up to the yielding of main bars simulating deterioration of the structure due to seismic action to a control level.These two columns were repaired with sprayed basalt fiber reinforced polymer (BFPR) composite.Different thicknesses of sprayed BFRP composite were applied.Each specimen was subjected to lateral low-frequency cyclic loading and simultaneous constant axial load to simulate seismic action and dead load respectively.The test result analysis showed that sprayed BFRP can increase the load carrying capacity, enhance the energy absorption capacity, and can effectively restore the strength of past earthquakedamaged RC column.

Abstract: Steel-concrete composite beam prestressed with internal tendons (SCCPIT) is composed of prestressed concrete slab, steel beam and shear connectors, etc. At present, there is no calculation formula for crack width of SCCPIT in current design codes like European standard Eurocode 4 or American code ASSHTO LERD Bridge Design Specification (2004). In this paper, calculation formulas for crack width of nonprestressed steel-concrete composite beam provided in Code for Design of SteelConcrete Composite Structure (DL/T 50851999) were adopted as a basis for modification. On the basis of available test results, calculation formulas for uneven coefficient of reinforcement strain and average crack space were modified by consideration of concrete slab width and combined force ratio. Hence, empirical calculation formulas for crack width of SCCPIT under negative moment were proposed. In order to verify accuracy of proposed formulas, available test results including results of five simply supported SCCPITs previously conducted by author were introduced, and comparisons indicated that calculated values were in good agreement with test results.

Abstract: With the development of curtain wall in super high-rise buildings which promoting the application of embedded part. In this paper, the experimental research on the tensile, shear properties of a kind of channel type embedded part which has been disposed through a hot extrusion forming new technology. The mechanical properties, deformation and damage form of embedded parts were investigated.Experimental results indicate that it has good mechanical properties and favorable deformation performance under tensile and shear loads in normal work. Under effect of tension, the circular anchor nail was pulled-off from channel and the bottom junction between square anchor nail and channel was tore were the main failure forms. Otherwise, when under the effect of shear, the bolts were sheared fracture. The results of experiment could provide experimental basis for channel embedded part with wide application in engineering.

Abstract: The article mainly introduces the constructive measurements in order to achieve the Two-direction effects of concrete composited slab based on the single-direction thin slab poured concrete, through the describing of the slab form, the method and principle of reinforced and the formation of composited slab, etc. Some primary problems about the composited slab have been solved by the constructive measurements. The achievement of above has a promotion for the development of the structural element.

Abstract: With the increase of people’s living quality, entertainment has become an essential way of life in modern life, and thus it has become an important and significant research goal to design safe, functional, practical and aesthetic entertainment facilities. In the paper, a novel self-propelled air railcar has been designed on the basis of the characteristics of existing ones. According to the working principle of railcar, the paper adopted ergonomics, to design the seat’s position and height reasonably to ensure passengers’ comfort; adopted innovation design method of bionics, where the appearance modeling design combined the moon, clouds and stars to comply with the times; used 3D software to model and render the model, and thus to express the artistic conception and reality sense of product, then the product will get recognition by consumers in both function and aesthetics.

Abstract: Optoelectronic industry is one of the pillar cornerstone industries in the 21st century. For China optoelectronic enterprises, how to participate in the global competition by means of the world-class quality has become the survival or perish subject. Based on the analysis of optoelectronic products and its quality management characteristics, this paper proposed the product lifecycle quality management model which is customer demands-driven and six sigma process control targeted by emphasizing the process control based on fact and data. This paper suggested and illustrated the prototype system of optoelectronic product lifecycle quality management combined with the actual quality management for demonstrating the feasibility of model.