WO2018129983A1 - Structure de connexion d'une colonne préfabriquée en blocs de béton recyclés et son procédé de construction - Google Patents

Structure de connexion d'une colonne préfabriquée en blocs de béton recyclés et son procédé de construction Download PDF

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Publication number
WO2018129983A1
WO2018129983A1 PCT/CN2017/107725 CN2017107725W WO2018129983A1 WO 2018129983 A1 WO2018129983 A1 WO 2018129983A1 CN 2017107725 W CN2017107725 W CN 2017107725W WO 2018129983 A1 WO2018129983 A1 WO 2018129983A1
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WIPO (PCT)
Prior art keywords
column
concrete
vertical
prefabricated
block concrete
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Application number
PCT/CN2017/107725
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English (en)
Chinese (zh)
Inventor
吴波
魏之凯
Original Assignee
华南理工大学
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Application filed by 华南理工大学 filed Critical 华南理工大学
Publication of WO2018129983A1 publication Critical patent/WO2018129983A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements

Definitions

  • the invention relates to the technical field of waste concrete recycling, in particular to a joint structure of a precast recycled block concrete column and a construction method thereof.
  • Precast concrete components have been widely used in engineering construction due to fast construction speed and good construction quality.
  • Recycled concrete columns use a large number of waste concrete blocks, which meets the national strategy of energy saving and recycling economy.
  • the stratified placement of waste concrete blocks at the construction site leads to the construction speed of the recycled concrete columns compared to conventional concrete columns. Reduced.
  • assembling the joint structure is the key to affecting construction efficiency and structural safety.
  • the connection structure of precast concrete columns usually adopts wet connection.
  • This connection structure requires concrete to be poured on site.
  • the construction is relatively troublesome and has certain influence on the environment, which fails to fully reflect the advantages of industrialization of the building. For this reason, it is urgent to develop a connection structure of a precast concrete column which is simple in structure, safe and reliable, and convenient in construction.
  • the object of the present invention is to provide a joint structure of a prefabricated regenerated block concrete column and a construction method thereof.
  • the upper semi-column and the lower semi-column of the precast recycled block concrete column are connected by structural glue, and the construction is convenient, and the problems of long construction period and large environmental impact caused by wet connection are avoided, and the development requirements of the industrialization of the building are met.
  • the thickness of the concrete protective layer of the longitudinal rib after the bending treatment is significantly increased in the joint region of the structural adhesive, which can effectively delay The performance of the structural adhesive deteriorates at high temperatures, which in turn ensures good fire resistance of the column.
  • the invention is achieved at least by one of the following technical solutions.
  • a joint structure of prefabricated regenerated block concrete columns including prefabricated regenerated block concrete upper half column, prefabricated regenerative block concrete lower half column, standing rib, steel positioning plate, shear steel, vertical tunnel, vertical concave
  • the groove, the longitudinal rib and the stirrup; the steel positioning plate is located inside the upper half column, and the steel positioning plate is pre-drilled with holes, the number of holes is the same as the number of longitudinal bars of the upper half column, and each hole corresponds to one longitudinal rib, but each The position of the hole is closer to the center of the cross section of the upper semi-column than the position of the corresponding longitudinal rib; the lower part of each longitudinal rib of the upper semi-column is bent and passed through the corresponding hole in the steel positioning plate.
  • the above-mentioned connection structure of a prefabricated regenerated block concrete column, the prefabricated regenerated block concrete upper half column and the prefabricated regenerative block concrete lower half column are filled with waste concrete block and new concrete, waste concrete block and new
  • the mass ratio of concrete is 1:4 ⁇ 1:1; the new concrete is natural aggregate concrete or recycled aggregate concrete, and the waste concrete block is the block which is broken after the old building and structure remove all or part of the steel bar.
  • the characteristic size of the waste concrete block is not less than 60 Mm.
  • a construction method for a joint structure of a prefabricated regenerated block concrete column comprising the following steps:
  • the lower semi-column of the pre-formed regenerated block concrete is placed in position by the crane, and then the organic structural glue or the inorganic structural glue is poured into the vertical and vertical grooves of the lower semi-column, and finally utilized.
  • the crane stacks the upper half of the precast recycled block concrete on the lower half of the precast recycled block concrete, and ensures that the shear steel extending from the lower end of the upper half of the column and the longitudinal reinforcement after bending are inserted into the lower half of the column.
  • the vertical groove and the corresponding vertical hole, and the lower end surface of the upper half column is in close contact with the upper end surface of the lower half column.
  • the present invention has the following advantages and effects:
  • Fig. 1 is a schematic view showing the connection structure of a precast recycled block concrete column.
  • the figure shows: 1-precast recycled block concrete upper half column; 2-precast recycled block concrete lower half column; 3-vertical hole; 4-vertical groove; 5-ring rib; 6-steel positioning Plate; 7-stand ribs; 8-longitudinal ribs; 9-shear-resistant steel.
  • FIG. 1 it is a schematic diagram of the connection structure of a precast recycled block concrete column, including a prefabricated regenerated block concrete upper semi-column 1, a prefabricated regenerative block concrete lower half column 2, a standing rib 7, and a steel positioning plate 6 , shear-resistant steel 9, vertical tunnel 3, vertical groove 4, longitudinal rib 8, stirrup 5; steel positioning plate 6 is located inside the upper half of the column 1, the steel positioning plate 6 is pre-drilled with holes, the number of holes and the upper
  • the longitudinal bars 8 of the semi-columns are of the same number, and each hole corresponds to one longitudinal rib 8, but the position of each hole is closer to the center of the cross-section of the upper-half column 1 than the position of the corresponding longitudinal rib 8;
  • the lower portion of each longitudinal rib 8 of 1 is subjected to bending treatment, passes through a corresponding hole in the steel positioning plate 6, and extends vertically downward from the lower end surface of the upper semi-column 1; a part of the shear-resistant steel
  • the rubber; the shear steel 9 extending from the lower end surface of the upper half column 1 and the longitudinal reinforcement 8 bent after the bending are respectively inserted into the vertical groove 4 of the lower half column 2 and the corresponding vertical hole 3, and at the same time, the upper half column 1
  • the lower end surface is in close contact with the upper end surface of the lower half column 2.
  • the vertical groove 4 has a cross-sectional dimension of 260 mm ⁇ 260 mm ⁇ 15 mm ⁇ 20 mm and a depth of 210 mm; the vertical channel 3 has a diameter of 25 mm and a depth of 360 mm; and the longitudinal rib 8 has a diameter of 18 mm.
  • the diameter of 7 is 10 mm.
  • the lower portion of each longitudinal rib 8 of the upper semi-column 1 was subjected to an inward bending process, and the distance between the position of the longitudinal ribs 8 after the bending treatment and the position of the longitudinal ribs 8 before the bending treatment was 170 mm.
  • the cross-sectional dimensions of the prefabricated block concrete upper half column 1 and the prefabricated regeneration block concrete lower half column 2 are both 500 mm ⁇ 500 mm
  • the steel positioning plate 6 has a thickness of 10 mm
  • the shear type steel has a cross section size of 250 mm.
  • ⁇ 250mm ⁇ 9mm ⁇ 14mm H-shaped steel, H-shaped steel has a length of 400mm.
  • the steel positioning plate 6 is welded with the longitudinal ribs after the bending treatment, the shear steel 9 and the steel positioning plate 6 are spot welded; the vertical grooves 4 and the vertical of the prefabricated concrete bulk lower half 2 are vertical
  • the organic structural adhesive is filled into the tunnel 3; the shear-resistant steel 9 extending from the lower end surface of the upper semi-column 1 of the pre-formed regeneration block body and the longitudinal reinforcement 8 after the bending treatment are respectively inserted into the vertical groove 4 and the corresponding vertical tunnel 3 .
  • connection structure of the prefabricated regenerated block concrete column comprises the following steps:
  • the prefabricated block concrete lower half column 2 is first placed in position by a crane, and then the organic structural glue is poured into the vertical hole 3 and the vertical groove 4 of the lower half column 2, and finally utilized.
  • the crane stacks the prefabricated regenerated block concrete upper half column 1 on the prefabricated regenerative block concrete lower half column 2, and ensures the shear-type steel 9 extending from the lower end surface of the upper semi-column 1 and the longitudinal reinforcement 8 after the bending treatment.
  • the vertical grooves 4 and the corresponding vertical holes 3 of the lower half column 2 are inserted, respectively, and the lower end faces of the upper half columns 1 are in close contact with the upper end faces of the lower half columns 2.
  • the steel positioning plate 6 and the shear-resistant steel 9 are all made of Q345B steel, the welding rod is E50-shaped, the flux F4A0, and the weld quality grade is one level.
  • Both the longitudinal ribs 8 and the standing ribs 7 are made of HRB400 hot rolled steel bars.
  • the new concrete has a strength rating of C45, the cubic concrete has a compressive strength of 35 MPa, and the mass ratio of the waste concrete block to the new concrete is 1:2.
  • the present invention can be preferably implemented.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

Cette invention concerne une structure de connexion d'une colonne préfabriquée en blocs de béton recyclés et son procédé de construction. La structure de liaison comprend une demi-colonne supérieure préfabriquée en blocs de béton recyclés (1), une demi-colonne inférieure préfabriquée en blocs de béton recyclés (2), des barres d'érection (7), une plaque de positionnement en acier (6) et de l'acier résistant au cisaillement (9). Des canaux de trous verticaux (3) et des rainures verticales (4) sont ménagés près d'une face d'extrémité supérieure de la demi-colonne inférieure préfabriquée en blocs de béton recyclés (2), une colle structurale est versée dans les canaux de trous verticaux (3) et les rainures verticales (4), et les positions des canaux de trous verticaux (3) et des rainures verticales (4) correspondent respectivement aux positions de l'acier résistant au cisaillement (9) et de barres longitudinales (8) qui ont été pliées sur une face d'extrémité inférieure de la demi-colonne supérieure préfabriquée en blocs de béton recyclés (1). La structure de connexion présente une structure simple et elle est pratique à construire.
PCT/CN2017/107725 2017-01-16 2017-10-26 Structure de connexion d'une colonne préfabriquée en blocs de béton recyclés et son procédé de construction WO2018129983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710027182.5A CN106638987B (zh) 2017-01-16 2017-01-16 一种预制再生块体混凝土柱的连接构造及其施工方法
CN201710027182.5 2017-01-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025063A (zh) * 2018-08-01 2018-12-18 广州五羊建设机械有限公司 节段式钢管再生混合构件的制作方法及其使用的变位机
CN109944348A (zh) * 2019-04-04 2019-06-28 河南绿建建筑科技有限公司 槽钢上冲孔式钢砼组合管l型节点
CN115478696A (zh) * 2022-08-31 2022-12-16 重庆建工住宅建设有限公司 一种钢管混凝土叠合柱施工工法

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CN106638987B (zh) * 2017-01-16 2022-05-24 华南理工大学 一种预制再生块体混凝土柱的连接构造及其施工方法
CN109057502A (zh) * 2018-09-13 2018-12-21 福建瑞森水泥制品发展有限公司 一种装配式电杆及其装配方法
CN109356185A (zh) * 2018-10-30 2019-02-19 南昌大学 一种再生块体混凝土预制墩基础及其施工方法
CN109208823B (zh) * 2018-11-12 2024-03-08 安徽工程大学 一种可快速装配的内置钢箱式钢管混凝土柱及其生产工艺
CN113374174B (zh) * 2021-06-08 2022-09-13 华南理工大学 一种新型再生块体混凝土预制装配式构造柱及其施工方法

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JP2005139730A (ja) * 2003-11-06 2005-06-02 Taisei Corp 鉄筋コンクリート部材の接合方法
CN102995745A (zh) * 2012-12-27 2013-03-27 沈阳易筑建材经销有限公司 采用钢筋搭接方式的装配整体式混凝土结构体系
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025063A (zh) * 2018-08-01 2018-12-18 广州五羊建设机械有限公司 节段式钢管再生混合构件的制作方法及其使用的变位机
CN109025063B (zh) * 2018-08-01 2021-05-14 广州五羊建设机械有限公司 节段式钢管再生混合构件的制作方法及其使用的变位机
CN109944348A (zh) * 2019-04-04 2019-06-28 河南绿建建筑科技有限公司 槽钢上冲孔式钢砼组合管l型节点
CN115478696A (zh) * 2022-08-31 2022-12-16 重庆建工住宅建设有限公司 一种钢管混凝土叠合柱施工工法

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