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Fabricated frame strip steel bracket long column and construction method thereof

A prefabricated, steel corbel technology, applied in columns, piers, pillars, etc., can solve the problems of complex joint structure of prefabricated reinforced concrete frames, low comprehensive cost, difficult promotion and application, etc., to achieve reliable construction quality, use of steel The effect of small quantity, easy transportation and hoisting

Active Publication Date: 2014-02-05
CHINA AVIATION PLANNING & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a long steel corbel column of an assembled frame and its construction method, which not only solves the technical problems of complex joint structure and difficult installation of the existing assembled reinforced concrete frame, but also greatly improves the axial compression of the existing prefabricated column Bearing capacity and shear bearing capacity to solve the technical problem of poor seismic performance of the existing prefabricated reinforced concrete frame; also to make it fast in construction and low in comprehensive cost to solve the high comprehensive cost of the existing prefabricated reinforced concrete frame column, Technical issues that are difficult to popularize and apply

Method used

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  • Fabricated frame strip steel bracket long column and construction method thereof
  • Fabricated frame strip steel bracket long column and construction method thereof
  • Fabricated frame strip steel bracket long column and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Embodiment one, see Figure 1-4 As shown, this prefabricated frame with long steel corbel columns includes more than two layers of interstory columns 1 and more than two steel corbel nodes 2;

[0055] The steel pipe 1.2 at the interstory column 1 and the steel corbel joint 2 of the long column, the first pre-cast steel pipe inner concrete 1.3 and the column longitudinal reinforcement 1.4 bound outside the steel pipe are integrally penetrated, and the column longitudinal reinforcement 1.4 Column stirrups 1.5 are bound at intervals in the upper transverse direction;

[0056] The steel pipe 1.2 in the range of the interstory column 1 and the steel corbel joint 2 is poured with steel pipe outer concrete, and the steel pipe outer concrete is combined with the column longitudinal reinforcement 1.4 and column stirrup 1.5 to form the steel pipe outer reinforcement concrete 1.1;

[0057] The long column is a superimposed column composed of reinforced concrete 1.1 outside the st...

Embodiment 2

[0095] Embodiment two, see Figure 5 As shown, the cross-section of the steel pipe 1.2 is circular, the cross-section of the reinforced concrete 1.1 outside the steel pipe is circular, and the rest are the same as in the first embodiment.

Embodiment 3

[0096] Embodiment three, see Figure 6 As shown, the cross-section of the steel pipe 1.2 is square, and the cross-section of the reinforced concrete 1.1 outside the steel pipe is square, and the rest are the same as in the first embodiment. Steel pipe 1.2 is rectangular or square, although the restraint effect is reduced, but the rectangular or square cross-section covers a larger area than the circular one, thus containing more high-strength concrete, which is also very effective for improving the bearing capacity of long columns. The side length of the steel pipe 1.2 is 150-500mm.

[0097] Calculation example 3 , 500x500 side length of steel pipe concrete composite column, rectangular steel pipe □D300x7, using Q345, C80 concrete inside the pipe, C40 concrete outside the pipe; longitudinal reinforcement 12D20, steel reinforcement HRB400. The square or rectangular steel pipe does not count the effect of increasing the strength of the concrete restraint in the pipe.

[0098...

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Abstract

The invention discloses a fabricated frame strip steel bracket long column and a construction method of the fabricated frame strip steel bracket long column. The column body is a composite column consisting of three parts, namely steel pipe outer reinforced concrete, a steel pipe and steel pipe inner concrete; the steel pipe and the steel pipe inner concrete penetrate through the whole long column; the steel pipe inner concrete is subjected to primary prefabrication to form a steel pipe concrete column; concrete at a steel pipe outer joint or total concrete is poured in advance at the second time; a steel bracket is welded with the steel pipe. The long column has the advantages that 1, a multi-layer frame column is manufactured into a long column, the manufacture is simple, and the installation is convenient; 2, the column body is a composite column, the compression bearing capacity and shear capacity of the column are 2-4 times that of a reinforced concrete column with the same section, and the bearing capacity and anti-seismic property of the frame column are obviously improved; 3, the steel bracket is arranged and can be connected with a steel beam or a cast-in-place reinforcedconcrete beam, and the connection is convenient and reliable; and 4, high-strength concrete in the steel pipe is prefabricated in a factory, and the construction cost of the column is greatly reducedcompared with that of a conventional composite column. Therefore, the long column is suitable for various multi-story and high-rise prefabricated buildings and is wide in market prospects.

Description

technical field [0001] The invention relates to a frame column in an assembled building, in particular to a long column used in a multi-story assembled frame structure and a construction method thereof. Background technique [0002] Frame structure, frame-shear wall structure and frame-tube structure have flexible room layout and are widely used structural forms in modern buildings. Among them, frame columns play a very important role in various buildings. The prefabricated structure is produced intensively in the factory, which is a low-carbon and environmentally friendly structural form, and is the development trend of modern architecture. Prefabricated frame structures currently mainly include steel structures and prefabricated reinforced concrete structures. Steel structures have light weight and good ductility, but they are expensive and have poor fire resistance. The prefabricated reinforced concrete frame structure is low in cost, durable and good in fire resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34E04B1/58
Inventor 邹剑强付佳宏
Owner CHINA AVIATION PLANNING & DESIGN INST GRP
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