Experimental Studies Of The Earthquake Response For The Eight-floors & Big Space Construction Made Of Concrete Block

Account for the development of economy of our country, it has become inevitable trend for the hollow block a house to replace gradually the solid center glues the soil brick house. The time in our country to apply concrete block in construction engineering is shorter, in design, construction etc. aspect still had no mature experience, and in our country most of big and middle scale cities all locates in the area with strong earthquake level, the anti- earthquake ability of the house made of block is particularly focused on. Currently, to concrete the small scaled and hollow a restrict for structural anti- earthquake function research depth returning not enough, hence, homologous norm in our country to small scaled and hollow block in concrete constructing is stricter. By the anti- earthquake design norm( GB50011-2001) in our country, muti-floors block constructs located in 6 degree and 7 degree anti- earthquake defend area it is generally limited to establish only seven floors. Seeing from current domestic and international and actual engineering, applying a construction for constructing mostly at six ~ seven floors below, and the space is smaller, for the such muti-floors and high buildings, 100% injection efficiency is adopted. If the limit in norm to the floor number of the small scaled and hollow block in concrete a house can be loosened to eight floors above , the space is bigger, injection efficiency is just the right amount, it can save a lot of land and developments funds, and can enrich constructing type, hence , experiment studies of simulating earthquake vibration to eighth floors above and big open space ,the small scaled and hollow block in concrete a house will be very meaningful.In this paper, the house of eight layer, big open the small scaled and hollow block in a concrete is the research object, the main results are summarized as follow.In chapter 1, the research status about the studies and application of concrete block building in domestic and international field, as well as the development of experiment method of construction anti-earthquake. The model construction and experimental method to response to earthquake are established.In chapter 2, analogous relation of model structure , the material of prototype construction and model structure are established; Proceeding the model designs, computing material parameters of the prototype structure and structural and the analogous relation; The creation method of model structure is established.In chapter 3,the measure points are set, the load system of model experiment is defined, the development and distribution of crack on model wall are recorded, open degree, open position .earthquakes harm, the destroy mechanism of model structure are studied. The result expresses that the deformation alone X and Y direction are mainly bend.In chapter 4, the experiment data of three wave types under three work conditions are analyzed .The enlarge output factor of three kinds of earthquakes wave and predominance frequency of the top floor are analyzed and compared . Experimenting the result expresses that different earthquake wave has little influence to frequency. When the platform input is over 0.25 g, many cracks on the horizontal and vertical wall appears. The non-linear increases, predominance frequency decreases strongly .With increment of platform input, enlarge factor does not decrease strongly. This expresses that the model construction the function of anti- ability under the action of middle-strong earthquake is stronger. The proper frequency change of model structure is studied after variant earthquake level. It is shown that this model construction can satisfy 7 anti-s earthquake to defend the request.Through the above experimental studies, the valuable results are derived as follow:1. From the research of characteristic of earthquake for eight floors, big open space , hollow block , the analysis method for the anti-earthquake design are provided.2. experiment results provide the base for isolution design of big open space, hollow block ,and small scaled concrete house...