Anti-seismic Research Of Mild Steel Damper On The Technology Of Adding Steel Storeys On The Top Of Frame-shear Wall Storeys Structure

Steel structure directly add layer technology with its unique advantages, Often iswidely used in home add layer reconstruction，but a common steel structure directlyafter add layer structure under firm on soft phenomenon. What’s more, add layer part ofthe lateral stiffness of steel frame structure is limited, so when the building height ishigher and the level of larger efforts, the structure of the lateral deformation will belarger, can’t well meet the requirements of the corresponding specification, According tothe Building seismic design code（GB50011-2010）, this kind of composite structurebelong to vertically irregular structure. As a frequent earthquake country in our country,the research of anti-seismic property of adding stories structure is of great importance.The main content of this essay is as below:（1）Illustrates the layer structure transform technology and the application status athome and abroad and its development prospects：The stiffness mutations and whiplasheffect caused by the present of the steel structure added layer; the applications ofstructural damping control and various control methods, expounding the energydissipation principle and application and development of mild steel damper and theproblem which can solved by it.（2）The time history analysis about different system add layers in the frame-shear wallstructure: For a10-layer reinforced concrete frame structure of the existing buildingextended to steel directly added layer structure, the support is not installed add-layerstructure, equipped with common support structure and installed additional layersenergy dissipation device (mild steel damper) plus layer structure. By adding theoriginal structures and different layer structures under rare earthquake time-historyrespond, comparative analysis of mild steel energy dissipation devices add layers ofdifferent systems play an important role in the earthquake.（3）Illustrates the mild steel shock absorbing device energy consumption underdifferent arrangement position, in which the rare earthquake damping effect the reactionprocess, the calculation results provides a preliminary assessment about the applicationthat the mild steel damper used in the practial engineering scientific and reasonablearrangement of mild steel damper, the mild steel damper to maximize the effect ofenergy consumption. （4）The structure in combination with the energy dissipation dampers are generallythrough the support, the support in the form of different have different mechanicalperformance, can affect the damper’s damping effect, will also affect the use function ofthe building, the reasonable support form can make mild steel dampers play better theeffect of shock absorption. In view of the above factors, this topic research the differentsupport type of mild steel damper in frame shear structure and the damping effect oflayer system, for the mild steel damper in the application of steel frame shear structuremodification to provide certain reference.