Large-span reinforced concrete orthogonal-diagonal open-web floor and manufacturing method thereof

A technology of reinforced concrete and a manufacturing method, which is applied to floors, building components, buildings, etc., can solve the problems of uneven force on the floor, waste of materials and cost, and save the thickness of the floor, reduce the project cost, and achieve uniform force. Effect

Inactive Publication Date: 2015-09-23
WEIFANG CHANGDA CONSTR GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When floor plane size L x / L y For a narrow and elongated plane >1.5 or larger, if the orthogonal grid is used, the stress on the floor will be extremely uneven, resulting in waste of materials and increased cost

Method used

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  • Large-span reinforced concrete orthogonal-diagonal open-web floor and manufacturing method thereof
  • Large-span reinforced concrete orthogonal-diagonal open-web floor and manufacturing method thereof
  • Large-span reinforced concrete orthogonal-diagonal open-web floor and manufacturing method thereof

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Embodiment Construction

[0034] In the embodiment, the large-span reinforced concrete is placed vertically and obliquely on the hollow floor, and the perimeter of the building floor is an isosceles triangle grid, and the middle is along the perimeter of 45 0 The corner is a square fasting grid, the size a of the right-angled side of the surrounding isosceles triangle and the length of the hypotenuse of the isosceles triangle a 1 for a=a 1 × sin45° relationship, that is, the surrounding grid a 1 After being determined, the size of the internal square grid a along the 45° direction is also determined.

[0035] by figure 1 The shown floor is taken as an example to describe in detail. There is a reinforced concrete girder every 7.2m in the length direction, and a secondary beam every 3.6m. The surrounding concrete connecting beams are connected with the girders as a whole, forming 43.2m×21.6m=933.12 m 2 The large-area floor of this traditional structure causes high engineering costs and hinders the de...

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Abstract

The invention relates to a large-span reinforced concrete orthogonal-diagonal open-web floor. An isosceles triangle mesh is provided on the periphery, a square open-web mesh 45 degrees angled to the periphery is arranged in the middle, the length a of the right-angle side of the isosceles triangle of the isosceles triangle mesh and the length a1 of the hypotenuse of the isosceles triangle meet the relation: a=a1*sin45 DEG, namely after the mesh a1 on the periphery is determined, the size a of the square open-web mesh along the 45-degree direction in the middle is determined; if a ratio of the length Lx of a building to its span Ly is greater than 1.5, the open-web mesh is placed in an orthogonal-diagonal manner; one-way force transmission of the floor can be changed into two-way force bearing (at 45 degrees), the floor can bear the force evenly, building materials are saved, and engineering cost is lowered; compared with the traditional large-span framed structures, the large-span reinforced concrete orthogonal-diagonal open-web floor saves concrete by 25% to 30% and steel by 20% to 25%; the open-web mesh plates are formed by open-web beams placed in the orthogonal-diagonal manner, the open-web part serves as an air conditioner and pipeline set layer of the floor, and floor thickness is greatly reduced.

Description

technical field [0001] The invention relates to a reinforced concrete hollow floor with a narrow and long plane, in particular, to a floor covering lengthwise (L x ) with span dimensions (L y ) ratio L x / L y The invention relates to a large-span reinforced concrete orthogonal oblique hollow floor with a value of >1.5 or greater and a manufacturing method thereof, belonging to the technical field of construction. Background technique [0002] For a long time, reinforced concrete structure engineering has been restricted by traditional structural systems. For floors with a span of (18m-30m), the only solution is the reinforced concrete primary and secondary beam structure, such as figure 1 The floor plan shown, its longitudinal dimension L x =6×7.2m=43.2m, the short direction is the span direction L y =3×7.2m=21.6m, using primary and secondary beams to arrange floor area 43.2m×21.6m=933.12m 2 , floor use load 4kN / m 2 , floor concrete grade is C30, and the designed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/38
Inventor 马克俭徐鹏强张华刚朱九洲肖建春房海魏艳辉王维奇卢亚琴王丰娟栾焕强陈靖袁波姜岚
Owner WEIFANG CHANGDA CONSTR GROUP
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