Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs

A technology of prefabricated concrete and concrete columns, which is applied in the direction of architecture and building construction, can solve problems such as unclear node calculation models, unclear force transmission, and difficult construction, so as to achieve small prestress loss, broad application prospects, and high construction efficiency. fast effect

Active Publication Date: 2014-07-23
南京易蔚均科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many forms of existing CFST joints, most of which are complex in structure, difficult in construction, unclear in force transmission, and unclear in joint calculation models. Up to now, there is no relatively complete set of joint calculation theory and design methods in our country.

Method used

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  • Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs
  • Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs
  • Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Unbonded prestressed connection precast concrete beam circular concrete column joint structure as follows figure 1 Shown:

[0024] 1. Manufacture of circular steel pipe concrete and reinforced concrete beams

[0025] The circular steel pipe concrete column (1) and the reinforced concrete beam (2) are fabricated in the factory in strict accordance with the relevant specifications and drawings, and four corresponding tunnels are reserved during prefabrication. The metal bellows (4) is buried, and the ring plate (5) and the channel steel (6) are welded by surrounding welding at the connecting beam of the circular steel pipe concrete column (1).

[0026] 2. Assembly of beam-column joints

[0027] After the circular steel pipe concrete column (1) is positioned, the reinforced concrete beam (2) is hoisted and positioned by supporting.

[0028] 3. Tensile unbonded prestressed tendons

[0029] Wear the unbonded prestressed tendons (3) in the bellows (4), and stretch the unb...

Embodiment 2

[0033] See when it is a side column node figure 2 , other measures are the same as in Example 1, except that the unbonded prestressed tendons are welded to the ring plate (5) at the end of the side column, and this ring plate can be used as a pressure bearing plate when the unbonded prestressed tendons are stretched .

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PUM

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Abstract

The invention provides a node for connecting a prefabricated concrete beam with a round steel tube concrete column through unbonded prestressed ribs, and belongs to the technical field of building structures. The node comprises the round steel tube concrete column, the reinforced concrete beam, the unbonded prestressed ribs, an annular plate and channel steel. The round steel tube concrete column (1) and the reinforced concrete beam (2) are both prefabricated; the positions, corresponding to beam sections, of the reinforced concrete beam and of the round steel tube concrete column are provided with hole channels; metal corrugated tubes (4) are pre-buried in the hole channels; the portion, connected with the reinforced concrete beam (2), of the round steel tube concrete column (1) is provided with the annular plate in a welded mode; the channel steel (6) is welded to a round steel tube; the unbonded prestressed ribs (3) penetrate through the metal corrugated tubes (4) and are tensioned so that the beam and the column can be connected into a whole. The construction speed is high, the onsite welding process is needless, reliability of node connection can be guaranteed, good anti-seismic performance is achieved, the node connection mode can be used for a side column node in a structure and can also be used for a middle column node and application prospects are wide.

Description

technical field [0001] The invention relates to a joint of a prefabricated concrete beam circular steel tube concrete column connected by unbonded prestress, and belongs to the technical field of building structures. Background technique [0002] Concrete filled steel tubes have been used in construction projects for more than 100 years. Circular concrete filled steel tube has been valued by engineering circles because of its advantages of high bearing capacity, good plasticity and toughness, good economic effect and convenient construction. Circular concrete filled steel tubes can adapt to the needs of modern engineering structures to develop towards large spans, high towers, heavy loads and withstand harsh conditions, and meet the industrial requirements of modern construction technology, so they are being more and more widely used in single-story and multi-story industrial factory building columns , Equipment frame columns, trestle columns, piles, space structures, comme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/58
Inventor 李振宝王倩倩宋坤解咏平马华
Owner 南京易蔚均科技有限公司
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