The Large And Complex Grid Lifting Design And Installation Sequence Simulation

With economic development and technological progress, large-span spatial structure inour country more widely, span structure also will be growing, increasing the height of thestructure in the form of more exotic. At the same time to bring a lot of construction workproblems, in particular structural morphology in the construction process and the differentstages of the construction and design of the mechanical characteristics of the course wassignificantly different, this has resulted in changing the structure of displacement and stress ofeach construction stage, Therefore, large-span spatial structure analysis and mechanicalsimulation study the whole construction process is essential.In this paper, a large complex roof truss grid for the study, in the existing ceiling gridstructure of basic research at home and abroad on the installation and construction, for theconstruction of the project to do the research in the following areas:（1）Through the analysis of grid points of the main factors in several blocks liftingprocess to determine the detailed engineering hoisting installation program.（2）With space steel structure design software3D3S11.0to formulate lifting schemedoor frame and the middle area of the first ten and eleven common roof the main grid hoistingprocess is simulated, according to the results of the simulation software, rationality ofconstruction safety programs analyzed, for which the individual stress ratio overrun reinforcingrods made recommendations, to ensure the smooth implementation of the project provides astrong theoretical support.（3）Using finite element analysis software MIDAS/GEN8.21sequence ofengineering isavailable in three different installation plan has carried on the simulation, according to theresults of the simulation software, Choose a structure deformation and stress smaller installationprogram has been improved, finally, improved installation scenarios were simulated andanalyzed, after a detailed analysis of the simulation program to improve the installation process,Force structure at each step of the construction and deformation, further illustrate the improved safety and feasibility of installing the program, and establishing as large and complex roof trussgrid construction and installation program.