Bean column node unequal strength concrete replacing structure and its construction method

A technology of beam-column joints and concrete, which is applied in the direction of building structure and construction, can solve the problems of slow construction speed and complicated construction technology of beam-column joints, and achieve the effects of simplifying construction technology, speeding up pouring speed and improving work efficiency

Inactive Publication Date: 2005-03-02
北京建工一建工程建设有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a beam-column joint unequal-strength concrete replacement structure and its construction method, which solves the problems of complex construction technology and slow construction speed of beam-column joints

Method used

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  • Bean column node unequal strength concrete replacing structure and its construction method
  • Bean column node unequal strength concrete replacing structure and its construction method
  • Bean column node unequal strength concrete replacing structure and its construction method

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Experimental program
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Effect test

Embodiment 1

[0029] Embodiment one sees Figure 4 , 5 : The structure is composed of reinforced concrete columns 1 on the upper floor, reinforced concrete beams 2, and reinforced concrete columns 3 on the lower floor to form beam-column nodes 4 at the intersections, and rhombus-shaped enlarged haunches 9 are added around the beam-column nodes to increase thickness, and the side length of the rhombus-shaped enlarged haunches is the same as that of the columns The diagonal of the cross section is vertical. The concrete strength of the enlarged haunch is the same as that of the beam, and the height of the enlarged haunch is the same as the height of the highest beam at the joint. A project is a reinforced concrete frame structure, the concrete strength of the frame column is C40, and the cross-sectional size is 800mm×800mm, the concrete strength of the frame beam is C30, and the cross-sectional size is 400mm×800mm; the rhombus is used to expand the axillary nodes, and the structural reinforc...

Embodiment 2

[0031] Embodiment two see Figure 6 , 7 : the shape of the enlarged ax is rectangular, and the side length of the rectangular enlarged ax 10 is parallel to the side length of the column. A project is a reinforced concrete frame structure, the concrete strength of the frame column is C40, and the cross-sectional size is 1000mm×1000mm, the concrete strength of the frame beam is C30, and the cross-sectional size is 400mm×800mm; use rectangular axillary expansion nodes, and the structural ribs are smooth circles with a diameter of 10mm. The side length is 1200mm, the stirrup is threaded, and the diameter is 25mm; the anti-seismic hook length of the structural reinforcement is 100mm, and the hook length of the stirrup is 375mm. At this time, the beam-column joints are poured together with the beam, and the concrete strength grade is C30.

[0032] When the beam-column joints are formed into a rectangular enlarged axillary, the shape of the structural reinforcement is "mouth" shape ...

Embodiment 3

[0033] Embodiment three see Figure 8 , 9 : the shape of the expanded axillary is circular, and the diameter of the circular enlarged axillary 11 is the same as the length of the diagonal line of the column cross section. The local frame column of a certain project has a circular cross-section with a diameter of 800mm, the concrete strength of the frame column is C40, the concrete strength of the frame beam is C30, and the cross-sectional size is 400mm×800mm; the circular enlarged axillary node is used, and the diameter of the circular enlarged axillary part is 1000mm; The structural reinforcement is a smooth circle with a diameter of 10mm, and the stirrup is threaded with a diameter of 25mm; the length of the anti-seismic hook of the structural reinforcement is 100mm, and the length of the hook of the stirrup is 375mm. At this time, the beam-column joints are poured together with the beam, and the concrete strength grade is C30.

[0034] When the beam-column joint is formed ...

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Abstract

The beam-column node construction method is to form beam-column node in the intersection point of beam and column and features that the beam-column node has expanded axils of concrete in the same strength as that of the beam around the node. The expanded axils have height the same as that of highest beam in the node. The node concrete has strength equal to or lower than that of beam; and the expanded axils are diamond shaped, rectangular or circular. The node may be deposited together with the beam. The present invention aims at facilitating beam-column node construction and speeding beam-column node construction.

Description

(1) Technical field [0001] The invention explores a beam-column node structure in a reinforced concrete structure and a construction method thereof. (2) Background technology [0002] With the efficient use of urban land and limited space and the continuous improvement of modern building technology, the number of floors and heights of buildings are gradually increasing. In high-rise buildings with cast-in-place concrete frame structure, the frame columns bear the vertical load transmitted from the upper multi-storey building, and the concrete strength is generally relatively high, while the beam or slab only bears the load of this layer and considers the beam end or slab The strength of concrete is relatively low due to the seismic effect of "strong column weak beam" or "strong column weak slab". In this case, the concrete pouring of beam-column or slab-column joints has always been a headache for construction units. Conventional methods such as figure 1 , 2 , 3, the lowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/20E04B1/58
Inventor 蔡鹏程文玲
Owner 北京建工一建工程建设有限公司
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