The Measures On Control In Amount Of Steel Bar In Reinforced Concrete Structure Of Multi-storey And Tall Residential Buildings

Structural design for reinforced concrete structure of multi-storey and tall residential buildings should observe the principle of security, advanced technology, economic,and convenience for construction.At present, many real estate development companies sign the contract to design institutes, the additional content of the terms of concrete into the thickness, and per unit area of steel. They hope to reduce the volume of building materials, to lower construction cost, to reach the company in maximizing profits and productivity. The designers need to enhance the market service, the programme of economic analysis and comparison, to meet the investor's requirements of the technical and economic aspects.From the scheme and structural design of two phases, this dissertation summed up out of the measures on control in amount of steel bar in reinforced concrete structure of multi-storey and tall residential buildings. Plan period, the basic element in per unit area of steel is the shape of the building itself. Try to keep both the spindle of the direction of dynamic characteristic near. To regulate the height and width ratio meets the requirements. To be rule vertical shape, simple plain-form, the stiffness and bearing capacity distributed evenly. The axis net size should be even as far as possible. Adjust the shear wall to decline the reverse of the structure. Load transmits in the level structure by a simple path. If necessary, consider to adopt part and lower altitude transformational structure. Tall residential buildings adopt short pier shear wall structures or shear wall structures, multi-storey residential buildings adopt the specially shaped column frame and shear wall structures.Working drawings stage the main technical measures include: select suitable loads, appropriate to reduce the quantity of shear walls, the soleplate of basement in a tall building adopts flat slab, the anchor bar to work cooperatively with the soleplate of basement, structural members to use high-tensile steel bar and high strength concrete, etc.Through the analysis and comparison of some projects, after optimization design, in steel and concrete unilateral level reduce to a certain extent, and the structural safety will be more reasonable.