The Principle And Experiment Of Anchoring For Steel Ring In Wind Power Foundation

The wind generating foundation is assembled by steel ring and concrete, the steel ring isthe most important part of composition, as supporting structure, the tower and foundationmust bear great wind power which must bear a great number of loads.Based on the unique bonding anchor characteristic between steel ring and concrete, thearticle studied bond and anchor experiment in detail. According to the theoretical analysis ofcalculating anchor length of reinforced steel in Code for Design of Concrete Structures, thearticle determined the depth and tested the bonding stress and distribution law by pulling-outexperiment. Following on from this article since the research on the anchor theoreticalanalysis and experiment of:Chapter one analyzed the research and development of constituted structure by shapedsteel and concrete. The wind generating foundation belongs to constituted structure, becauseits bonding stress transfer and distribution is similar with shaped steel and concreteconstituting structure. By means of the theory and researched achievement, contrasted thewind power foundation, analyzed problems which are presencing in wind power wind powerfoundation structure.Chapter two studied on steel ring embedded in concrete mechanism. The bonding stressbetween steel ring and concrete along the embedded length were analyzed which proved thatthe bonding stress that composited by three parts and which bear shear power by end steelplate of steel ring.Chapter three studied experiment on the bonding stress between steel ring and concreteof wind foundation. According to the theoretical analysis of calculating anchor length ofreinforced steel in Code for Design of Concrete Structures, the article determined the depthand tested the bonding stress and distribution law by pulling-out experiment which providedimportant reference for the design of detail structure and finite element simulation.The fourth Chapter used ANSYS finite element simulation, the article studied the steelring and concrete performance. According to the material basic mechanical parameters ofconcrete and steel ring. Analyzed calculating the internal bonding stress transfer anddistribution law, provided important reference to calculate anchor length by comparison withthe experiment data, putting forward the method which is used to calculate the depth of steelring according to the Code for Design of Concrete Structure about the reinforcementanchorage length is feasible. By comparison with the experiment data, verified the modelbased on material basic mechanical parameters can truly reflect basic mechanical feature ofwind power generating foundation.The fifth chapter summaries the whole thesis and puts forward the problems that theauther expect to solve.The researched achievement provided theory foundation of wind foundation design; The result of numerical simulation can be used as finite element analysis.It is necessary to perfectand improved the theory of structure for the every force situation which would be used to thedesign of wind foundation structure.