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Totally-prefabricated prestressed concrete floorslab structure and prestressed assembling method

A concrete and prestressed technology, applied in the direction of floor slabs, building components, building structures, etc., can solve the problem that the fully prefabricated floor slab is difficult to ensure the anti-leakage and connection integrity, and achieve sustainable social and economic development, good resistance The effect of crack resistance and high factory prefabrication rate

Inactive Publication Date: 2016-09-21
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a fully prefabricated prestressed concrete floor structure and a prestressed assembly method to solve the shortcomings of existing laminated floor systems that require a large number of on-site binding and cast-in-place operations, and Fully prefabricated floor slabs are difficult to guarantee leak resistance and insufficient connection integrity

Method used

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  • Totally-prefabricated prestressed concrete floorslab structure and prestressed assembling method
  • Totally-prefabricated prestressed concrete floorslab structure and prestressed assembling method
  • Totally-prefabricated prestressed concrete floorslab structure and prestressed assembling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 (assembly structure where prefabricated floor slabs are supported at shear walls)

[0045] Such as Figure 8 As shown, it is an assembly structure in which the prefabricated floor is supported at the shear wall, and the assembly objects are the prefabricated floor 1 , the lower shear wall 11 and the upper shear wall 12 . The prefabricated floor 1 is provided with the prestressed steel bar 4 at the bottom of the slab and the common steel bar 5 at the top of the slab, both of which protrude enough from the edge of the slab to ensure the required length of connection or anchorage; The cavity left between is filled by post-cast concrete 9 .

[0046] During assembly and construction, the prefabricated floor 1 must first be transported, hoisted and placed in place and the construction support must be prepared. The bottom surface of the floor is flush with the top surface of the lower shear wall 11, and the top surface of the floor is flush with the bottom surfac...

Embodiment 2

[0047] Embodiment 2 (assembly structure where prefabricated floor slabs are supported on composite beams)

[0048] Such as Figure 9 As shown, it is an assembly structure in which the prefabricated floor slab is supported at the composite beam. The assembly objects are the prefabricated floor 1 and the composite beam 13. The length of the slab edge is sufficient to ensure the connection or anchoring length; the composite beam 13 and the prefabricated floor 1 are connected by post-cast concrete 9 .

[0049] During assembly and construction, the prefabricated floor 1 must first be hoisted in place and the construction support must be prepared. The bottom surface of the floor is flush with the top surface of the prefabricated part of the composite beam 13; Temporary local load 10, the size of the load should be controlled according to its ability to roughly offset the anti-arch deflection caused by the prestressing effect of the prefabricated floor 1 during manufacture; The bot...

Embodiment 3

[0050] Embodiment Three (Assembly structure where prefabricated floor slabs are supported on complete beams)

[0051] Such as Figure 10 As shown, it is an assembly structure in which the prefabricated floor is supported on the complete beam. The assembly objects are the prefabricated floor 1 and the complete beam 14. The prefabricated floor 1 is provided with the prestressed steel bar 4 at the bottom of the slab and the common steel bar 5 at the top of the slab, both of which protrude from the edge of the slab Sufficient length to ensure connection or anchoring length needs; complete beam 14 and prefabricated floor 1 are connected by post-cast concrete 9 .

[0052] When assembling and constructing, the prefabricated floor 1 must be transported, hoisted and placed in place first, and the construction support must be prepared. The bottom surface of the floor is flush with the top surface of the complete beam 14; Local load 10, the size of the load should be controlled accordin...

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Abstract

The invention discloses a totally-prefabricated prestressed concrete floorslab structure and a prestressed assembling method. The structure comprises prestressed floor slabs, support members and post-casting concrete poured among the prestressed concrete floor slabs and support members. In each support grid formed by the support members (beams or walls) arranged criss-cross, a complete precast floor slab is contained. Prestressed rebars are arranged on the inner bottoms of the prestressed floor slabs. The tops of the prestressed rebars are equipped with ordinary reinforced steel bars. The prestressed rebars and the ordinary reinforced steel bars extend along slab edges. The assembling method comprises following steps: 1, making the prestressed floor slabs; 2, transporting, hoisting, constructing and supporting the prestressed floor slabs; 3, temporarily applying loads to the prestressed floor slabs; 4, post-casting concrete to slab joints and maintaining; 5, removing temporary and partial loads. The totally-prefabricated prestressed concrete floorslab structure and the prestressed assembling method have following beneficial effects: defects of a conventional laminated floor slab system such as a large number of bonding and pouring work on the spot are solved; and a totally-prefabricated prestressed concrete floor slab has great resistance to leakage and is connected integrally.

Description

technical field [0001] The invention relates to a fully prefabricated prestressed concrete floor structure and a prestressed assembly method, belonging to the technical field of construction engineering. Background technique [0002] Since the 21st century, with the continuous improvement of people's requirements for living conditions and living environment, the construction industry has developed rapidly. However, the development of the construction industry has caused serious resource consumption and environmental pollution, forcing people to seek a new way out of the construction industry. Building industrialization characterized by prefabricated concrete structures is one of the effective ways to realize housing industrialization and building energy saving and emission reduction. [0003] In prefabricated concrete structures, the prefabricated assembly rate of the floor slab has a decisive influence on the prefabricated assembly rate of the entire structure. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/02
CPCE04B5/02E04B5/023
Inventor 李富民杨泰黄朗郭震范力
Owner CHINA UNIV OF MINING & TECH
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