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Connecting system of prefabricated assembly type wood-concrete assembly structure

A prefabricated concrete slab and prefabricated assembly technology, which is applied to building components, building structures, bridge parts, etc., can solve the problems of high precision requirements, low construction efficiency, and insufficient ductility of prefabricated connectors, so as to improve efficiency and reliability , improve the sliding stiffness, reduce the effect of requirements

Pending Publication Date: 2019-12-13
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rebar-planted or steel-plated connectors have high slip stiffness and shear strength, but insufficient ductility
There are still problems such as high precision requirements and low construction efficiency in the research and application of fabricated connectors.

Method used

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  • Connecting system of prefabricated assembly type wood-concrete assembly structure
  • Connecting system of prefabricated assembly type wood-concrete assembly structure
  • Connecting system of prefabricated assembly type wood-concrete assembly structure

Examples

Experimental program
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as Figure 1-3 As shown, a connection system of a prefabricated wood-concrete composite structure, including a wooden beam 1, a prefabricated concrete slab 2, steel bars 3 inside the slab, and a prefabricated shear connector.

[0021] The assembled shear connector includes a special embedded part 4, an inclined hole 5 and an assembly screw 6; the special embedded part 4 includes an inclined steel sleeve 4-1, a trapezoidal steel plate 4-2, and a reinforcement hole 4- 3 and the cylindrical foam 4-4, the cylindrical foam 4-4 is glued to the top of the inclined steel sleeve 4-1, and a trapezoidal steel plate 4-2 is welded on the busbar of the inclined steel sleeve 4-1, and the trapezoidal steel plate 4-2 is pre-installed The reinforcement holes 4-3 are left, and the special embedded parts 4 are staggeredly embedded in the precast concr...

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Abstract

The invention discloses a connecting system of a prefabricated assembly type wood-concrete assembly structure. The connecting system comprises a wood beam, a prefabricated concrete board and an assembly type shear connector, wherein the assembly type shear connector comprises a special pre-embedded part, an inclined hole and an assembly bolt; the special pre-embedded part comprises an inclined steel sleeve, a trapezoidal steel plate, a penetrating rib hole and cylindrical foam; after prefabricated concrete board is cast and formed, the cylinder foam is damaged to form the inclined hole; the assembly bolt drills into the wood beam along the inclined hole and the inclined steel sleeve, so that bolt sinking needs to guarantee during drilling; and after the inclined hole is assembled, early-strength low-shrinkage cement mortar is adopted to fill up. A method of enabling the special pre-embedded part to match with the assembly bolt is utilized, so that connection of the prefabricated assembly type wood-concrete assembly structure is realized. The connecting system is low in construction difficulty, is high in assembly efficiency, has higher slippage rigidity compared with a cast-in-place type inclined bolt, and has better bearing ability and ductility performance.

Description

technical field [0001] The invention relates to a novel connection system of a prefabricated assembled wood-concrete composite structure, which is mainly used in the field of building structures, roofs and bridge structures. Background technique [0002] Wood is a renewable and recyclable natural resource with excellent properties such as high tensile strength and low strength-to-weight ratio. Precast concrete slabs are energy-saving and environmentally friendly, have high compressive strength, high rigidity, and low shrinkage, and can effectively avoid changes in wood moisture content caused by cast-in-place operations and reduce potential structural problems. At the same time, the precast concrete slab shrinks sufficiently, which can effectively reduce the creep characteristics of the wood-concrete composite structure. [0003] The existing cast-in-place connectors include pin type, planting bar type and planting plate type. Pin-type connectors have high shear strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/12E04B1/41E01D19/12E01D101/10E01D101/26
CPCE04B5/12E04B1/4121E01D19/125E01D2101/26E01D2101/10
Inventor 杨会峰陶昊天刘伟庆
Owner NANJING UNIV OF TECH
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