Research On The Performance And Microstructure Of Polyphosphoric Acid Modified Asphalt

Yunnan Province is one of the strong earthquake area in China, in recent years, large and small earthquake makes the engineering personnel directly facing the challenge of structural seismic.9 units of the joint including Yunnan Provincial Department of housing and urban rural construction, in the Yunnan deducing earthquake [2012] 131 document "Notice on further accelerating the development and application of seismic isolation technology of work " make a statement to further enhance the awareness of people in the earthquake prevention and disaster reduction, accelerate the popularization and application of seismic isolation technology in the construction of work in our province, and strive to make our province engineering technology to a new level, to make our province isolation technology R&D capability and the application of isolation technology in industry at the forefront of the country.The base isolation is a favorable means to resist earthquake, but for a long time, mainly used in low rise buildings, the reason can not be widely used in high-rise buildings is mainly due to the high structure to support the tension makes the isolation effect is relatively poor. Seismic simulation shaking table can be a true representation of the process of earthquake, seismic shaking table model test of seismic structure, is considered to be the most intuitive test, the results of seismic action results have good comparability, which has important reference value to the research and design of aseismic structures.In this paper, I set up the vibration table test of the scale model of shear wall structure at a proportion of 1:12.5, according to the specification, the two natural waves and one man-made wave on the scale model is similar with the prototype were analyzed by X, Y unidirectional earthquake wave excitation and mesa, acquisition, recording a large number of test data, through analysis, the collation of data, the performance parameters of the model structure, study on the dynamic characteristics of the scale model under different seismic fortification intensity, under the different earthquake waves. Through the experimental results and the analysis of experimental data, analysis of dynamic characteristics of data obtained by backstepping structure prototype of scale model, and by using the finite element software ETABS to establish structure model, through software simulation analysis of dynamic characteristics of data comparative analysis and experimental prototype demonstrates the backstepping structure, shear wall structure residential isolation can decrease once the fortification requirements to design.Finally I summarize the research work, point out some problems of seismic isolation analysis of shear wall structure, and put forward some corresponding suggestions.