Advanced Materials Research Vols. 368-373

Abstract: Gypsum-adobe wall structure is a new type of green earth building. The feature of its structure is that the wall uses adobe and plaster as its main materials.The wall is erected by putting rods or stems of plants between layers of adobe, and is poured gypsum slurry into the gaps between adobe bricks and on the wall surface. Then adobe and plaster solidify and come to a composite wall structure. Finally，Gypsum and adobe bricks interact and bear stress together. This paper focuses on fully describing the shaking table test of a 1/4 scale house model of the structure. The Test results and engineering practice show that the single-storey gypsum-adobe wall structure has a good seismic performance and is worth promoting in residential construction of the drought areas.

Abstract: To study the anti-seismic performance of the viscous damper and the E shaped steel bearing on the continuous girder bridge, two models of the Taibai bridge located in Xi’an are analyzed by the nonlinear time-history method and the Midas/Civil software, considering the interaction between pile and soil. The related data are obtained through the two computational models. The results show that the bending moments and shear forces of the bottom of the fixed pier are reduced and it is effective to reduce the displacements of the top of the fixed pier and the end of the girder. And, the viscous damper and the E shaped steel bearing form the large hysteresis loops, dissipate the earthquake energy and reduce the earthquake response of the bridge.

Abstract: using fixed concrete slump method,the carbonation resistance of concretes with high-volume fly-ash and ground granulated blast-furnace slag had been studied, and make an approach to size- effect .The results show that the more fly-ash joined in,the more carbonation depth is deeper . The carbonation resistance of concretes with high-volume fly-ash and ggbs is better than only with high-volume fly-ash’s. Size effect on carbonation depth of concretes is also important . Carbonation depth will become deeper as soon as the block size improving .and the early improvement is bigger than the late .The more concretes with high-volume fly-ash and ground granulated blast-furnace slag,the size-effect on carbonation depth of concretes will be more evident.

Abstract: The finite element model about greenhouse canopy of seismic analysis was setted up, The finite element analysis software ANSYS was used to study structure displacement, stress analysis on greenhouse shed. The results showed that the dangerous part of the canopy were located on upper chord members,lower chord members, web members of the framework and the lower and upper, the inside of both sides of the wall with seismic load.Corresponding to this results ,the main destroied form were the framework damage caused by the bending deformation of upper chord members, lower chord members and the upper web members and the unstability caused by the distortion of both sides of the wall.

Abstract: Axial pullout test on ductile iron buried pipelines with MTS testing machine was carried out, the relation curve between axial tension and flexiable joint displacement was gotten, the functional failure mechanism of flexible joint of buried pipeline was discussed. The results indicate that there is relative displacement between pipe and soil under seismic action, meanwhile, the acting force between pipe and soil is the viscous damping force which is related to pipe-soil relative speed.

Abstract: In the southwest mountains, a lot of dangerous rock bands are widely distributed, whose formation conditions are complex, which are diverse, specially located and dangerous. How to reinforce such complex unstable rock band In this paper, the treatment of typical dangerous rock band is taken as an example, the classification investigation and one by one evaluation is performed first, and then each block composing the complex and dangerous rock band is analyzed and calculated. According to the site conditions and calculated results of each block composing the dangerous rock, using clearing risk - repairing - reinforcement- landscaping and other technology portfolio approach, forming a comprehensive treatment program to conduct a thorough treatment for each dangerous rock, it is proved that such a reinforcement technique has good effects with the management of dangerous rock.

Abstract: To study the feasibility of impact compaction on the foundation and subgrade compaction in Yellow River flooded area and explore construction process and control parameters that could ensure good compaction results, experiment was conduct on impact compaction. By way of detecting the influence of impact compaction on settlement, moisture content and degree of compaction in different construction technology to analysis the feasibility of impact compaction on the foundation and subgrade compaction in Yellow River flooded area. By evaluating the effect of compaction of different construction techniques, appropriate construction technology and control parameters of impact compaction on foundation and subgrade in the Yellow River flooded area was summarized. Research results showed that impact compaction had a good compaction effect on foundation and subgrade in Yellow River flooded area. For foundation compaction, discontinuous impaction construction should be adopted and control parameters should use degree of compaction and settlement and the best impaction times should be 12 -14 times. For subgrade compaction, the thickness of the loose layer should be 80cm and the best impaction times should be 25-30 times.

Abstract: A new method to diagnose the damage of masonry structure using artificial network is brought forward. The frequencies and the ratio of change for any two orders various frequencies is chosen as a damage indicator and is used to train the BP neural network, which can diagnose the damage of masonry structure. The result of the numerical computation shows that the BP neural network can diagnose the damage of masonry structure.

Abstract: Removed due to Plagiarism. Original was published by Nicola Caterino, Mariacristina Spizzuoco, Antonio Occhiuzziexperimental Comparison of Control Algorithms for Semi-Active Control Withmagnetorheological Dampersin the Proceedings of ANISIS2009, Bologna

Abstract: Using general analysis software ANSYS establish non-isolated and isolation steel villa structure model, selecting a reasonable seismic wave and obtaining this via seismic excitation time-history analysis: sliding isolated structures can reduce seismic upload, slip shift seismic isolation layer absorbs most of the energy, can reduce seismic response of 23.1%~78.8% compared with ordinary anti-seismic structure. the level of isolation effect is remarkable.