The Vibration Study Of Composite Steel-Concrete Slab Of BeiJing Yintai Center

Steel - concrete composite floor is a beam-slab system in which the beam and slab resist the load action together. The steel beam and the concrete slab is connected with the shear connector. Therefore, the tensile properties of steel and concrete compressive performance are made full advantage, and the combination of materials is much better than their own. Compared with the general cast-in-place concrete slab system, this floor can reduce its dead weight, reduce the cross-section size, increase the efficient use of space, save mode support processes, shorten the construction period, and increase the ductility of the components. And compared with the steel, the slab can reduce the amount of the steel, reduce costs, increase the stiffness, stability and integrity of the structure and enhance the durability and fire resistance.With the rapid development of high-rise buildings, steel- concrete composite floor has more advantages. The designing trend is to use the minimum weight of the structure across longer span, thus the steel beam high-span ratio is getting smaller and smaller, increasing span of human activities leading to the floor vibration problems are more and more people's attention. The vibration problem comes out with the changes of structure systems and building materials, which has great difference between the vibration of the traditional Machinery and Equipment impact on the concrete structure. Based on the traditional means of analysis, we found it is necessary to summarize the latest research results both at home and abroad on this issue, discard the dross and select the essential, and establish a complete domestic vibrating system of floor designing reflecting the real designing concept of "people-oriented"In this thesis, theoretical analysis and research is conducted on the application of steel - concrete composite floor in high-rise building. The main work is as follows:1. Review is made on steel - concrete composite floor vibration theory and methodology at home and abroad.2. Based on the current codes and calculating methods, the vibration is calculated of steel - concrete composite floor used in Beijing Yin Tai Center, and the results are compared with the field test. 3. Significant factors that affect the steel - concrete composite floor vibration performance are presented, and a simple discrimination method by calculating is proposed.In this thesis, the designing method from the comfort of human beings is expanded, combined with the requests of the related data in the United States, Britain, Japan, Australia, etc. the conclusions of the theoretical analysis in the steel - concrete composite floor vibration could be referred in the similar components, and may provide scientific basis to make out the design codes.