| There are amount of advantages in the building projects through making use of the Dynamic Consolidation Method in order to consolidate the groundwork which may be of mass land-filling, large tracts of land, or loose structure and uneven thickness. Those advantages can be approached by simple technique, quick constructing speed, saving materials and project expenses, as well as improving the effect, therefore, the better economical and social effects can be realized through utilizing the Dynamic Consolidation Method. However, until recently related theoretical researches which have been done are not only few but immature, and the designing calculating is still on the level of depending on former experience and determining the nature. Then it is natural to realize that there is important theoretical and practical value and significance in conducting insight research on the theory and application of consolidating the land groundwork which is transformed from stones on the hill.The major research focuses and achievements of this thesis on the base of existing research results are displayed in the following lines:(1)The thesis utilizes the vague superioroption thoeries and provides its thoery, model and specific applying procedures. The analyses are taken in the handling schemes of the given practical groundwork by integrating with specific project samples, and the subjective elements of the assessing shemes are transformed into mathematical form, which possesses a high level of reliability as it takes the importance of all target elments into consideration and has been given different weight value.(2) The thesis analyses the structure and construction features as well as the features of engineering bearing power of breaking pieces of stones on the hills used to fill in the ground. And then it analyses macroscopic and microcosmic consolidating theories from the perspective of three waves produced by powerful pounding and presents the schematic diagrams. The analyses display different waves make contributions to consolidate breaking pieces of stones used to fill in the ground, however, the contributing methods are different. Therefore, the analyses should be taken a whole and consider the cooperative effect of three waves.(3) The thesis presents that, on the basis of analysing the nature determination theoretically, the more heavily the tamper hits the ground, the more power it gets, and the longer the shake lasts during the whole hit process, the more easily the granule framework tends to change and become dense. Through specific project trials, when the power of beating and the parameter is fixed, applying different hammer weight and dropping height to make a quantifying analysis, then the hammer weight can be known. It is suggested that the minimum hammer weight should be presented clearly.When the single beating power of the hammer is fixed, the heavy hammer should be used to the greatest extent, because the design requirement can not be reached if the beating weight is light.(4) It comes to an conclusion that in deeper research status quo the powerful beatings of the tamper can consolidate the groundwork which is formed by small broken stones in the mountainous area. On the basis of analysing the major influencing factors, applying the power measuring theories, the estimating formula, can be got, and then the formula γd≥20kN/m3will be deduced with the help of standard, which can be considered as the judging criterion of strengthening depth effectively. Compared with the formulas deduced by other researchers, the case study of projects has proved that the result error of this formula is minimum and the larger the underside area of the tamper is, the smaller the effective consolidating depth is. Therefore, it is suggested that the criteria should provide the reasonable range of the diameter of tamper, and when the single beating power of the tamper is fixed, the underside area of the tamper is different, the effective consolidating depth is different. |
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