Fabricated high-strength and high-ductility concrete sleeve-free connection structure and method

A high-ductility concrete and sleeve connection technology, which is applied to structural elements, building components, building structures, etc., can solve problems such as excessively long lap length, poor connection performance, and impact on the construction period, so as to shorten the lap length and solve the problem of Crowding of steel bars and improvement of seismic performance

Pending Publication Date: 2018-05-11
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, welding connection and mechanical connection are extremely difficult to be applied in the connection of fabricated structural members in practice due to the extremely difficult on-site construction; lashing lap joints are only used in prefabricated laminated panels and joints due to the long lap length and poor connection performance. The connection of steel bars in some beams; sleeve grouting connection and restraint oar-anchor connection are two connection methods available for prefabricated concrete structures at present, but due to the large size, heavy weight and c

Method used

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  • Fabricated high-strength and high-ductility concrete sleeve-free connection structure and method
  • Fabricated high-strength and high-ductility concrete sleeve-free connection structure and method
  • Fabricated high-strength and high-ductility concrete sleeve-free connection structure and method

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Example Embodiment

[0030] Example 1:

[0031] This embodiment provides a figure 1 The shown assembled high-strength and high-ductility concrete sleeve-free connection structure includes prefabricated reinforced concrete beams, the prefabricated reinforced concrete beams include a prefabricated reinforced concrete left beam 2 and a prefabricated reinforced concrete right beam 1, and the prefabricated reinforced concrete beams include hoops The reinforcement and the longitudinal reinforcement of the overlapping section arranged at the lower part of the beam, the upper part of the stirrup is exposed, and the outer side of the longitudinal reinforcement of the overlapping section is provided with a reserved stirrup 4;

[0032] The prefabricated reinforced concrete left beam 2 and the lower part of the prefabricated reinforced concrete right beam 1 are staggered and overlapped by the longitudinal reinforcement of the overlapping section, and the overlapping section of the longitudinal reinforcement i...

Example Embodiment

[0033] Example 2:

[0034] On the basis of embodiment 1, this embodiment provides a kind of figure 2 The shown assembled high-strength and high-ductility concrete sleeve-free connection structure also includes a prefabricated reinforced concrete upper column 10 and a prefabricated reinforced concrete lower column 11, and the prefabricated reinforced concrete upper column 10 is reserved with post-casting holes 8, and the lower A prefabricated core column 7 is prefabricated in the center of the end face, and the prefabricated core column 7 is used to support the prefabricated reinforced concrete upper column 10 during assembly, and the four corners of the prefabricated reinforced concrete upper column 10 and the prefabricated reinforced concrete lower column 11 are provided with overlapping Sectional longitudinal reinforcement, each end of the longitudinal reinforcement of the overlapping section is provided with an anchor plate 5, and the prefabricated reinforced concrete uppe...

Example Embodiment

[0040] Example 3:

[0041] On the basis of embodiment 1, this embodiment provides a kind of image 3 The shown assembled high-strength and high-ductility concrete sleeve-free connection structure also includes a prefabricated reinforced concrete upper column 10 and a prefabricated reinforced concrete lower column 11, and the prefabricated reinforced concrete upper column 10 and prefabricated reinforced concrete lower column 11 are respectively inverted steps shape and step shape, and the two steps are opposite to form two overlapping sections, the upper and lower steps of the prefabricated reinforced concrete upper column 10 and the prefabricated reinforced concrete lower column 11 are preset with longitudinal reinforcement of the overlapping section and reserved stirrups 4. Post-casting holes 8 are reserved on the prefabricated reinforced concrete upper column 10, leveling nuts 9 are provided at the ends of the longitudinal bars of the overlapping section of the prefabricated...

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Abstract

The invention provides a fabricated high-strength and high-ductility concrete sleeve-free connection structure and method. The fabricated high-strength and high-ductility concrete sleeve-free connection structure comprises prefabricated reinforced concrete beams, the prefabricated reinforced concrete beams comprise hoop ribs and lap joint section longitudinal ribs arranged on the lower portions ofthe beams, the upper portions of the hoop ribs are exposed, and reserved hoop ribs are arranged on the outer sides of the lap joint section longitudinal ribs. The lower portions of the prefabricatedreinforced concrete beams are lapped joint in a staggered mode through the lap joint section longitudinal ribs, and spiral hoop ribs are arranged at the staggered lap joints of the lap joint section longitudinal ribs. The upper portions of the prefabricated reinforced concrete beams are connected through the hoop ribs sequentially penetrating through the reserved hoop ribs and arranged in the prefabricated reinforced concrete beams, the high-strength and high-ductility concrete is post cast in a lap joint section, and the concrete is post cast on the upper portions of the prefabricated reinforced concrete beams. The lap joint length of rebars can be sharply shortened by utilizing the superhigh strength and the adhesive performance of the high-strength and high-ductility concrete, usage ofthe reserved hoop ribs is reduced or even omitted, anchor bending of beam rebars is avoided, and the problem of rebar overcrowding in a joint area is solved. Because a sleeve is not used, factory manufacturing is convenient, mounting is convenient, specialized personnel are not needed, and the quality is easy to control.

Description

technical field [0001] The invention belongs to the technical field of assembled concrete structures, and in particular relates to an assembled high-strength and high-ductility concrete sleeve-free connection structure and a connection method. Background technique [0002] Since the prefabricated components are prefabricated in the factory, the quality of the prefabricated components can be well guaranteed, and the safety of the prefabricated structure mainly depends on the connection between these components and the surrounding components. Reliable connection quality can realize the transmission of the specified internal force according to the design requirements, and will not cause problems in use and appearance. If there are defects in the quality of the joint connection, it will cause problems in use such as cracks and leakage, and it will affect the force transmission between components and components, components and supporting structures, causing problems in bearing ca...

Claims

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Application Information

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IPC IPC(8): E04C5/16C04B28/02
CPCE04C5/163C04B28/02C04B2111/00637C04B2111/00939C04B18/08C04B18/146C04B14/06C04B14/48C04B16/0625
Inventor 邓明科马福栋叶旺
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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