Construction method and structure of four-direction unbonded prestressed crossed beam-column joint

A beam-column joint and construction method technology, applied in structural elements, building structures, building components, etc., can solve the problems of long construction period, high construction difficulty, poor safety of component connection nodes, etc. The effect of improving the strength of column-beam joints

Inactive Publication Date: 2021-03-12
NANTONG SIJIAN CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's construction demand is large and the construction speed is fast. It is necessary to develop prefabricated buildings, so the requirements for the structure of prefabricated structural nodes are getting higher and higher, but there are generally long construction periods, difficult construction, and the safety of component connection nodes. Bad guarantee, etc.

Method used

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  • Construction method and structure of four-direction unbonded prestressed crossed beam-column joint
  • Construction method and structure of four-direction unbonded prestressed crossed beam-column joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A four-direction unbonded prestressed cross-beam-column joint construction method, the construction process includes:

[0035] (1) Hoisting construction of assembly structural columns. In order to better cooperate with the accurate piercing operation of the superimposed T-beam under the slab and the protruding unbonded prestressed tendons, before hoisting the assembly structure column, the elevation of the bottom position of the composite beam should be marked on the corresponding side of the assembly structure column with a "spring line" Well, during the hoisting process of each assembled structural column, use four-sided inclined adjustable steel supports, and ensure that the assembled structural column grouting material cannot be removed before it is completely solidified.

[0036] (2) The vertical two superimposed T-beams under the slab are hoisted in place, and the outstretched non-bonded prestressed tendons are cross-punctured. After the hoisting of the assembled...

Embodiment 2

[0044] On the basis of the implementation of Example 1, a four-direction unbonded prestressed cross-beam-column joint structure, such as figure 1 , 2 As shown, it includes prefabricated column 1, laminated T beam under the slab 2, prestressed tunnel 3, unbonded prestressed steel bar 4, pressure plate with spiral reinforcement 5, and anchorage 6; the laminated T beam under the slab 2 vertically crosses It is arranged around the top of the prefabricated column 1 , that is, the top of the prefabricated column 1 is vertically provided with under-slab laminated T beams 2 in four directions. The T-shaped section of the laminated T-beam 2 under the slab is only partially set, and the T-shaped section of the laminated T-beam 2 under the slab is attached to the prefabricated column 1; The end of the T-shaped section of the lower superimposed T-beam 2 is pre-embedded with a spiral reinforcement pressure plate 5; the unbonded prestressed steel bars 4 pass through the prestressed tunnel ...

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Abstract

The invention discloses a construction method and structure of a four-direction unbonded prestressed crossed beam-column joint. The construction method comprises the following construction technological processes: a, hoisting construction of an assembly structure column; b, hoisting two longitudinal overlapped T beams under a plate in place, and carrying out crossed perforating operation on overhung unbonded prestressed tendons; c, hoisting two transverse overlapped T beams under the plate in place, and carrying out crossed perforating operation on the overhung unbonded prestressed tendons; d,connecting the longitudinal and transverse overlapped T beams under the plate with column steel bars; e, hoisting overlapped plates in place, and anchoring overhung steel bars of the overlapped plates into the overlapped beams; f, pouring and maintaining concrete on the whole surface layer of a post-pouring section; g, mutually crossing, tensioning and anchoring the unbonded prestressed tendons of the longitudinal and transverse overlapped T beams under the plate at the end parts of the sections of the T beams; and h, grouting prestressed ducts. According to the construction method and structure, the strength of the beam-column joint is improved, the earthquake resistance is good, and the construction method and structure play an important role in promoting the better construction of theconstruction industry in China.

Description

technical field [0001] The invention relates to the field of assembly building construction, more specifically, it relates to a construction method and structure of four-directional unbonded prestressed cross beam-column joints. Background technique [0002] With the continuous development and progress of new building technologies and materials, prefabricated buildings have been widely used. In many countries with developed building industrialization, prefabricated buildings have experienced long-term experiments and applications. Modern prefabricated building products can already highly integrate various functions of buildings, and the forms and components of buildings are very delicate. my country's construction demand is large and the construction speed is fast. It is necessary to develop prefabricated buildings, so the requirements for the structure of prefabricated structural nodes are getting higher and higher, but there are generally long construction periods, difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/21E04B1/22E04C5/12E04C5/08
CPCE04B1/21E04B1/22E04C5/08E04C5/12
Inventor 张卫国徐卓陈学军丁伟王斯海蔡铭
Owner NANTONG SIJIAN CONSTR GRP
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