Analysis And Study On Energy Efficiency And Anti-Seismic Performance Of Complex Shear Walls System Without Demoulding Board

At present, energy-saving becomes one of the most important things in our nation, therefore, research on wall-reform and developing new structural systems have become one of emergencies in civil engineering field. Therefore, The Taiyuan University of Technology, associates with the Shanxi Province Constructs (Group) Main Corporation, Shanxi University and etc, research the complex shear walls system without demoulding board (natural science foundation project of shanxi province, serial number: 2006011050) . This structural system resolves the traditional shear wall structure's disadvantages such as poor heat preservation, large self-weight, strong stiffness, poor-ductility. The paper studies its properties of the heat preservation and the anti-seismic behavior.In the paper, we calculate the system heat preservation performance based on the hot working design theory and the finite element analysis procedure, and analyze its technical feasibility and the economical rationality.Based on the establishment of reasonable mechanics models and methodologies, the paper studies the complex shear walls system's anti-seismic performances and characteristics by the horizontal loading test, contrasts its break mode, intensity and ductility with the traditional shear walls.A new experimental building structure of this new structural system has built already. To provide referenced data, in this paper, analysis software ANSYS by finite element method is used to simulate the new experimental building structure in which of its anti-seismic characteristics, including modal analysis and dynamic time-history analysis, finally, the effects of the artificial vertical seams on the dynamic characteristics, anti-seismic performance and failure mechanism are analyzed.Therefore, we can draw some conclusions that:First, as a new complex wall system, complex shear walls system without demoulding board, not only has excellent capacity of heat preservation, but also has outstanding characteristics of anti-seismic. In the case of frequently occurred earthquake, like traditional shear walls, the new shear walls system has similar properties of anti-seismic, and the artificial vertical seams have little influence on structural periods, frequencies and vibration modes, what's more, the structure has strong stiffness and bearing capacity. In the case of seldom occurred earthquake, the connect girders break and quit work, the wall converted to several cross-slitted shear walls which has lesser stiffness, therefore, the shear-span ratio and self-shake period increased, meanwhile the yield intension ratio is enhanced, the break mode converted from brittleness shear break to bending break, obtained better anti-earthquake effect. The conclusion lays the foundation for the experiment and has great value of referring.Second, the base frequency of the experimental building structure is high, nearby the host mode shape, the distortion shape of other mode shape is respectively close. In the case of frequently occurred earthquake, it has upstanding characteristics of anti-seismic, contrasting with the stipulation, anti-seismic capability is favorable. These beneficially experience and the conclusion are favorable references to anti-seismic dynamic analysis and computation to this kind of structure.Ultra lightweight concrete remission and heat preservation mold patent is achieved for this thesis (Patent No.: ZL 200520117204.5), also formed in one piece and striping of lightweight concrete medium size mold patent is requested (Patent applying No.: 200410026118.8) .