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Multi-cavity concrete-filled steel tube column with embedded separation-type reinforced steel and construction method thereof

A steel pipe concrete column and construction method technology, applied in the direction of columns, pier columns, pillars, etc., can solve the problems that the overall bearing capacity of the column cannot be guaranteed, the health of workers is injured, and the welding workload is large, so as to improve the earthquake resistance and ductility. Fireproof performance, reduced welding work volume, and fast construction speed

Inactive Publication Date: 2016-07-06
姚攀峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-cavity concrete-filled steel tube column embedded with separate steel frames and its construction method, to solve the problems of excessive welding deformation, excessive welding stress and excessive welding workload in the existing multi-cavity steel tube concrete technology. Large, too much poisonous gas will cause harm to the health of workers, and it also solves the technical problems of construction difficulties and the overall bearing capacity of the column cannot be guaranteed

Method used

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  • Multi-cavity concrete-filled steel tube column with embedded separation-type reinforced steel and construction method thereof
  • Multi-cavity concrete-filled steel tube column with embedded separation-type reinforced steel and construction method thereof
  • Multi-cavity concrete-filled steel tube column with embedded separation-type reinforced steel and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] Embodiment one sees Figure 1-2 As shown, a multi-cavity concrete-filled steel tube column embedded with separated steel frames includes an outer steel plate 1, an inner steel plate, a core steel frame 2 and concrete, and the core steel frame 2 is a welded I-beam. The inner steel plate includes two vertical transverse partitions 7 and two vertical longitudinal partitions 8, and each inner steel plate is provided with at least one concrete flow hole. The outer steel plate 1 and the inner steel plate are enclosed and connected to form five cavities 3, which are four small cavities and one large cavity respectively. The cavity is filled with concrete 4 .

[0044] In the four small cavities, each cavity is provided with a core steel frame 2 which runs through the cylinder and is separated from the outer steel plate and the inner steel plate, and one large cavity is provided with two core steel frames 2 .

[0045] The cavity 3 is provided with horizontal partitions 5 at in...

Embodiment 2

[0051] Embodiment two, see Figure 3-4 As shown, the difference from the first embodiment is that the outer steel plate 1 and the inner steel plate are surrounded and connected to form six cavities 3, which are six small cavities respectively. The cavity is filled with concrete 4 . Each cavity is provided with a core steel frame 2 that runs through the column and is separated from the outer steel plate and the inner steel plate.

[0052] A prefabricated reinforced reinforcement cage 6 is embedded in the concrete 4 , and the prefabricated reinforced reinforced cage 6 is non-penetratingly connected between adjacent horizontal partition plates 2 . In other embodiments, the prefabricated reinforcement cage 6 can also pass through the hole 9 and be arranged through the cavity.

[0053] The prefabricated reinforcement cage consists of longitudinal bars 6.1 and stirrups 6.2.

[0054] Further, the cross-section of the prefabricated reinforcement cage 5 is rectangular, and may also ...

Embodiment 3

[0055] Embodiment three see Figure 5-6 As shown, the difference from the first embodiment is that the outer steel plate 1 and the inner steel plate are surrounded and connected to form two cavities 3, namely a small cavity and a large cavity. The cavity is filled with concrete 4 . Each small cavity is provided with a core steel frame 2 that runs through the cylinder and is separated from the outer steel plate and the inner steel plate, and one large cavity is provided with four core steel frames 2 . The core steel frame 2 is welded L-shaped steel.

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Abstract

The invention discloses a multi-cavity concrete-filled steel tube column with embedded separation-type reinforced steel and a construction method thereof.The column comprises outer side steel plates, inner side steel plates, core reinforced steel and concrete.The reinforced steel is welded or rolled and is one or a combination of two or more of i steel, H-shaped steel, steel shaped like the Chinese character 'wang' and L-type steel, the outer side steel plates and the inner side steel plates are connected in an enclosing mode to form two or more cavities, a through column body and one piece of core reinforced steel separated from the outer side steel plates and the inner side steel plates are arranged inside at least one cavity, the cavities are filled with the concrete, and horizontal partitioning plates are arranged at intervals in the height direction of the column bodies inside the cavities.The construction method includes the steps of factory cutting manufacturing, horizontal partitioning plate fixing, standard knot machining, standard knot connecting, standard knot lifting, concrete pouring and others.The quantity of components for field welding is reduced, the health and personal safety of workers are guaranteed, bad influences caused by shrinkage and creep can be reduced, and the seismic ducility and fireproof performance of the column bodies are further improved.

Description

technical field [0001] The invention relates to a multi-cavity steel tube concrete column and a construction method thereof, in particular to a multi-cavity steel tube concrete column with internal and external steel frames separated and a construction method thereof. Background technique [0002] With the continuous increase in the scale of urban buildings and the requirements of anti-seismic technology, the application of multi-cavity steel pipe reinforced concrete structures has increased rapidly. Previously, in order to deal with the problems of shrinkage and creep in concrete and when the cross-section of the column was larger, the column itself had insufficient compressive capacity, insufficient ductility, and poor ability to withstand large earthquake loads. The Chinese patent with the publication number CN105133793A discloses a space-constrained multi-cavity tube-in-tube reinforced concrete giant column and its construction method. The concrete is separated to form ...

Claims

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Application Information

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IPC IPC(8): E04C3/34E04G21/14
CPCE04C3/34E04G21/14
Inventor 姚攀峰
Owner 姚攀峰