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Large-span floor slab reinforcing method

A floor slab and polyethylene board technology, applied in building maintenance, construction, building construction, etc., can solve problems such as stress loss, high frictional resistance, poor tensioning effect of prestressed tendons, etc., to reduce stress loss and reduce friction The effect of resistance

Active Publication Date: 2013-11-20
浙江嘉苑园艺景观有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the prestressed tendons arranged in broken lines have a large frictional resistance during stretching, which can easily lead to stress loss, resulting in poor stretching effect of the prestressed tendons. Effective measures should be taken to reduce stress loss

Method used

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  • Large-span floor slab reinforcing method

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Embodiment Construction

[0020] The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0021] figure 1 It is a schematic diagram of the reinforcement structure of a long-span floor. In this embodiment, a diverter 1 is arranged in the middle of the concrete floor 6 between the wall 9 and the concrete beam 7, and a diverter 1 is arranged in the middle of the concrete floor 6 between the concrete beam 7 and the concrete beam 7, and a polyethylene plate is pasted on the top of the diverter 1. 2. The thickness of the polyethylene board 2 is 4 mm, and the top surface of the polyethylene board 2 is made into an arc with a radius of 550 mm. The top of the steering gear 1 is provided with a polyethylene plate 2, and the prestressed tendons 3 in the concrete floor 6 are distributed in a folded shape. The diameter of the prestressed tendons 3 is 14mm. A high-strength plastic sleeve is embedded inside. The diameter of the high-strength plastic sleeve is 35-40 m...

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Abstract

The invention discloses a large-span floor slab reinforcing method. The large-span floor slab reinforcing method is characterized in that a diverter is arranged in the middle of a concrete floor slab between a wall and one concrete beam, a diverter is arranged in the middle of a concrete floor slab between every two adjacent concrete beams, a polyethylene board adheres to the top of one diverter, the thickness of each polyethylene board is 4mm, the top face of each polyethylene board is made to be a circular arc, the polyethylene boards are arranged at the tops of the diverters, prestressed tendons in the concrete floor slabs are distributed in a zigzag shape, preformed holes are formed in the concrete floor slabs, high-strength plastic casing pipes are embedded into the preformed holes, the diameter of each high-strength plastic casing pipe is 35-40mm, the prestressed tendons are arranged inside the high-strength plastic casing pipes, the inner sides of the high-strength plastic casing pipes are coated by molybdenumdimanganese, and a fine stone concrete layer is arranged on the concrete floor slabs.

Description

technical field [0001] The invention relates to a large-span floor, in particular to a method for reinforcing a large-span floor. Background technique [0002] It is difficult for the concrete floor to form an integral body with the reinforcement layer. The present invention achieves the joint load bearing purpose of the concrete floor and the reinforcement layer by stretching the prestressed tendons. The shear stress on the concrete floor is relatively large in the case of a large span, and it is difficult for the linear prestressed tendons to Effectively bear the shear stress. The prestressed tendons arranged in broken lines can provide preshear force to the concrete floor to solve the problem of large shear stress of the concrete floor in the case of long spans. In addition, the prestressed tendons arranged in broken lines have relatively large frictional resistance during stretching, which can easily lead to stress loss, resulting in poor stretching effect of prestresse...

Claims

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Application Information

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IPC IPC(8): E04G23/02
Inventor 叶香竹
Owner 浙江嘉苑园艺景观有限公司
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