无梁楼盖把本来集中受力的梁变成许多疏散空间受力的工字结构系统(国外英文资料).doc

无梁楼盖把原来集中受力的梁变成无数分散空间受力的工字结构体系(国外英文资料) Flat beam floor originally concentrated force of the beam into numerous scattered space force system of h structure, make the clearance to the expansion of the higher floors of the building, save materials, improve the construction schedule, and quality of a material more dense, higher pressure resistance, resistance to vibration impact is stronger, the structure is more reasonable. Especially this kind of no girder floor makes the floor space to decorate the restriction of beam, become can be like a la carte to do what you want. Advantages: Flat slab structure for not set up the beam, board face load directly from the plate to column, has simple structure, power transmission path is simple, high utilization rate of clearance, aesthetically pleasing, is helpful for ventilation, easy to pipeline layout and construction of the advantages of. Disadvantages: No girders need thicker plates, stronger concrete and steel bars. In addition, from the structural performance aspect, the ductility of the slab is less ductile, and the damage of the plate in the column cap or the top of the column is the brittle impact. Coordinate structure - column cap The basement of the basement has no girders, and the structure of the cylinder is heavy. There is a conical column cap, common bent cap (epitaxial size is equal to the center of tapered column cap size 0.35) and with plate column cap (1/2) plate thickness of roof. Common floor form Common form of floor cover is: bi-directional mirial floor cover, well word floor cover, unbonded prestressed slab, floor cover and rib roof. Two-way ribbed floor: (1) the spacing is 600 ~ 1200 mm, ribs high 1/20 ~ 30 short span, is around the vertical and horizontal to the frame beam, the thickness of the appearance with 60 mm thick, usually also USES sound insulation block instead of shell mould, two-way ribbed floor has remarkable technical and economical advantages, widely used. (2) the tic-tac-toe floor: in th