Research On High-rise Prefabricated Concrete Box-type Multi-tube Structure Orthogonally Placed

The new type of concrete orthogonal skew box multi-barrel structure(hereinafter referred to as the new structure)belongs to the new box type structure system.The floor of the structure is an open sandwich panel,and the frame part is a mesh format wall frame composed of a dense column and two intermediate beams.The grid formed by the wall frame can be filled with industrial waste phosphorous gypsum,which is energy-saving and environmentally friendly,and can reduce its own weight.The amount of concrete material can be assembled,the structure plane is more regular,and at the same time,due to the small cross-section of the components,they can be divided into prefabricated units at the points where the wall frame pillars are inverted and at the midpoint between the beams.This structure not only has a large span,but also has a great advantage in the free division of rooms and the like.The new structure is characterized by the arrangement of the two sides of the oblique oblique grid box frame tube and the middle shear wall tube in parallel with the font layout.At present,the structural performance(structural response spectrum,distribution law of structural forces,structural elastoplasticity,structural assembly,and economic technology)of a high-rise,energy-saving residential building with a single-story,fourfamily,one-story,small-family and small-scale structure has not been studied.Therefore,in order to popularize and apply the new structure in large area in the future,this paper uses the structural model model of the finite element program to analyze,and focuses on examining and comparing the response spectrum characteristics,shear distribution characteristics,static pushing performance,and the general frame structure.Assembly type feasibility analysis.The results show:(1)The new cartridge type multi-tube structure mechanics principle is feasible.(2)The results of response spectrum analysis of the new cassette-type multi-barrel structure are better,and the structural form is reasonable.(3)Comparing the new structure with the common frame-tube structure,the new structure has lighter weight and less internal force under the same conditions such as the floor displacement index and the layer displacement angle.(4)Study the effect of horizontal seismic load on the cooperating performance of the grid frame tube and the intermediate shear wall tube of the new structure with different stiffness characteristics.By analyzing the distribution law of the structural floor shear force,overturning moment,share rate,etc.,the new structure has better performance of coordinated work,uniform internal force distribution of the bar,and reliable and effective frame cylinder.(5)Through a push analysis of a proposed new type of high-rise structure,and compare a conventional frame-tube structure.Both structures can obtain performance points,can achieve large earthquakes,and the new structure shows that the plastic hinge develops a smaller number of later.(6)Introduced the new structure and assembly type construction technology and advantages,listed through the enumeration of the vertical network format wall frame unit and the empty floor cover unit,as well as its assembly sequence and lifting requirements,calculation requirements.Comparing with the conventional box-tube structure assembly construction,the new structure assembly process is simple,assembly and lifting and transportation are convenient,and it has better assembly type utilization value.