CN102051984A - Method for strengthening node of structural members in building - Google Patents

Method for strengthening node of structural members in building Download PDF

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Publication number
CN102051984A
CN102051984A CN201010575572.4A CN201010575572A CN102051984A CN 102051984 A CN102051984 A CN 102051984A CN 201010575572 A CN201010575572 A CN 201010575572A CN 102051984 A CN102051984 A CN 102051984A
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China
Prior art keywords
steel band
node
groove
building
reinforcement means
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CN201010575572.4A
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Chinese (zh)
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CN102051984B (en
Inventor
杨勇
薛建阳
黄慧萍
韩晓赢
弓欢学
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Yang Yong
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Xian University of Architecture and Technology
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Priority to CN2010105755724A priority Critical patent/CN102051984B/en
Publication of CN102051984A publication Critical patent/CN102051984A/en
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Publication of CN102051984B publication Critical patent/CN102051984B/en
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Abstract

The invention discloses a method for strengthening a node of structural members in a building. Over two structural members are crossed at a common node; a structural member having most crossed surfaces with other structural members is defined as a main structural member, and other structural members are defined as auxiliary structural members; parts on the main structural member crossed with all the auxiliary structural members are provided with equidistant grooves vertical to the length direction of the main structural member; then steel belt hoops are closed around the main structural member along the grooves; the distance between every two grooves is same as the distance between every two steel belt hoops, the width of each groove is equal to or slightly larger than that of each steel belt hoop; and the grooves can be also replaced with holes. The invention can effectively improve the shearing resistance and the vibration resistance of the core region of the node and has the advantages of convenience for construction, simpleness for operation, low cost and favorable performance.

Description

Component node reinforcement means in the building
Technical field
The invention belongs to field of civil engineering, relate to component node reinforcement means in the building.
Background technology
Node is the position that the building structure beam column links to each other, it is the crucial hinge member of beam column power transmission, destruction of a node will cause total to be destroyed, therefore, in structure design, pay much attention to design of node, and all follow " the weak rod member of strong node " design principles, promptly when design, will must guarantee that at first node is better than members such as beam column, guarantee that node can not destroy prior to the beam column rod member.Owing to the building function of use changes, the building aseismicity demand improves and build reasons such as old, building is repaired, is reinforced, especially building aseismicity reinforce very necessary, and wherein in the building bean column node repairing and reinforcement and seismic hardening particularly important.Owing to node is the continuous position of beam column rod member, and often link to each other with many beams at the position of joints post, therefore, node area reinforcing and repairing construction be difficulty very, at present, does not still have ripe reinforcement means and reinforcing technique, and joint reinforcing is an important difficult problem in the building reinforce.At present, carried out outer subsides carbon cloth, outer sticking steel plate both at home and abroad and paste the carbon fiber board reinforcing technique outward node is reinforced, but in general, consolidation effect is not ideal, and the unusual trouble of construction, the ripe application still do not obtained.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide component node reinforcement means in the building, can effectively improve joint cores shear behavior and anti-seismic performance, have easy construction, simple to operate, with low cost, the characteristics of function admirable.
To achieve these goals, the technical solution used in the present invention is:
Component node reinforcement means in the building, plural member intersects at common node, with other member the definition of the component of maximum cross surfaces mutually being arranged is main member 1, other is a secondary member 2, on main member 1, the position of intersecting with each secondary member 2, length direction perpendicular to main member 1, open equally spaced groove, the groove that steel band hoop 3 edges are opened seals around main member 1 then, and the spacing of described groove is identical with steel band hoop spacing, groove width equals or is slightly larger than the width of steel band hoop 3, also can substitute described groove with the hole.
If have two members to intersect, then on the phase cross surface of arbitrary member, perpendicular to the length direction of this member, open equally spaced groove, the groove that steel band hoop 3 edges are opened seals around this member then, the spacing of described groove is identical with steel band hoop spacing, and groove width is slightly larger than the width of steel band hoop 3.
At the secondary member 2 and the corresponding position of slotting, also split an emissions groove mutually.
Described groove is opened on each secondary member 2, the position of intersecting with main member 1.
Steel band hoop 3 by pass in slotting after, adopt pneumatic baling press to install, with packing detain 4 forever seal fixing.After treating that the steel band packing installs formation steel band hoop 3, sulculus is tamped with the grouting material.
Described steel band hoop 3 materials are the steel band that turns blue, stainless steel band, galvanized steel or carbon fiber tape.
Described node is the node of concrete component and concrete component, masonry member, wood members, the perhaps node of masonry member and masonry member, wood members, the perhaps node of wood members and wood members.
The present invention compared with prior art has the following advantages:
(1) consolidation effect is good.
(2) easy construction.
(3) good endurance.
(4) draw materials conveniently, with low cost.
(5) applied range, good in economic efficiency.
Description of drawings
Fig. 1 is the structural representation that utilizes the node of the method for the invention reinforcing, and one has five members meets at node, and main member has four cross surfaces mutually with secondary member.
Fig. 2 is the vertical view that utilizes the node of the method for the invention reinforcing, and one has five members meets at node, and main member has four cross surfaces mutually with secondary member.
Fig. 3 is the lateral view that utilizes the node of the method for the invention reinforcing, and one has five members meets at node, and main member has four cross surfaces mutually with secondary member.
Fig. 4 is the vertical view that utilizes the node of the method for the invention reinforcing, and one has four members meets at node, and main member has three cross surfaces mutually with secondary member.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
Embodiment one
As shown in Figure 1, one has five members, main member 1 and secondary member 2 intersect at node, main member 1 has four cross surfaces mutually with secondary member 2, main member 1 and secondary member 2 all are concrete component, on the face that main member 1 and secondary member 2 intersect, length direction perpendicular to main member 1, open equally spaced groove, groove width slightly is wider than steel band hoop 3 width, slot thickness is slightly thicker than steel band hoop 3 thickness, and the groove that steel band hoop 3 edges are opened is packed around the pneumatic baling press of main member 1 usefulness then, it is 40% of steel band ultimate tensile strength that the packing elasticity of adjusting given atmospheric pressure value control steel band hoop makes the steel band tension stress, forever seal fixingly with packing button 4, the width of steel band hoop 3 equates that with groove width its material is a stainless steel band, also can adopt carbon fiber tape, the galvanized steel or the steel band that turns blue, its intensity is more than 800MPa, and thickness is 0.5~1.5mm, and present embodiment is selected 1.2mm.
Embodiment two
In the present embodiment, one has five members, main member 1 has four cross surfaces mutually with secondary member 2, main member 1 is the masonry member, secondary member 2 is the masonry member, on the face that main member 1 and secondary member 2 intersect,, open equally spaced groove perpendicular to the length direction of main member 1, groove width slightly is wider than steel band hoop 3 width, slot thickness is slightly thicker than steel band hoop 3 thickness, and the groove that steel band hoop 3 edges are opened is packed around the pneumatic baling press of main member 1 usefulness then, it is 35% of steel band ultimate tensile strength that the packing elasticity of adjusting given atmospheric pressure value control steel band hoop makes the steel band tension stress, forever seal fixingly with packing button 4, the width of steel band hoop 3 equates that with groove width its material is a stainless steel band, also can adopt carbon fiber tape, the galvanized steel or the steel band that turns blue, its intensity is more than 800MPa, and thickness is 0.5~1.5mm, and present embodiment is selected 1.2mm.
Embodiment three
In the present embodiment, one has five members, main member 1 has four cross surfaces mutually with secondary member 2, main member 1 is a wood members, secondary member 2 is a timber compoment, on the face that main member 1 and secondary member 2 intersect,, open equally spaced groove perpendicular to the length direction of main member 1, groove width slightly is wider than steel band hoop 3 width, slot thickness is slightly thicker than steel band hoop 3 thickness, and the groove that steel band hoop 3 edges are opened is packed around the pneumatic baling press of main member 1 usefulness then, it is 25% of steel band ultimate tensile strength that the packing elasticity of adjusting given atmospheric pressure value control steel band hoop makes the steel band tension stress, forever seal fixingly with packing button 4, the width of steel band hoop 3 equates that with groove width its material is a stainless steel band, also can adopt carbon fiber tape, the galvanized steel or the steel band that turns blue, its intensity is more than 800MPa, and thickness is 0.5~1.5mm, and present embodiment is selected 0.9mm.
Embodiment four
In the present embodiment, one has four members, intersect at node, in this case, on the phase cross surface of arbitrary member, length direction perpendicular to this member, open equally spaced groove, groove width slightly is wider than steel band hoop 3 width, and slot thickness is slightly thicker than steel band hoop 3 thickness, then with steel band hoop 3 along the groove of being opened, around the packing of the pneumatic baling press of main member 1 usefulness, it is 20% of steel band ultimate tensile strength that the packing elasticity of adjusting given atmospheric pressure value control steel band hoop makes the steel band tension stress, with packing detain 4 forever seal fixing, the width of steel band hoop 3 equates with groove width, its material is a stainless steel band, also can adopt carbon fiber tape, the galvanized steel or the steel band that turns blue, its intensity is more than 800MPa, thickness is 0.5~1.5mm, and present embodiment is selected 1.2mm.
Among all embodiment, groove can be opened on secondary member, also can all be slotted on main member and secondary member, also can come instead of grooves with aperture simultaneously, aperture can construction easily on the node structure of moulding.
After packing is finished, with mortar or coating aperture or groove are sealed, and then whole node outer brush japanning or coating, can protect the steel band hoop, prevent to get rusty.
The present invention improves beyond the intensity realize increasing force-summing element (encased steel strap) by pneumatic packaging technique, most important part is to rely on the bailing band hoop to concrete in the member, timber or brick, stone material produces very large horizontal restrain prestressing force, make old material (concrete in institute's strenthening member, timber or brick, stone) be subjected to good active lateral constraint, can effectively improve the strength and deformation ability of the member that is tied, and effectively limit or delay (or the timber of concrete in the member, brick, stone) cracking, thereby greatly improve institute's strenthening member deformation performance and energy dissipation capacity, improved the antidetonation and the shear behavior at node place.
Existing all kinds steel band is as the steel band that turns blue, stainless steel band, galvanized steel and carbon fiber tape etc., its ultimate strength all can be up to more than the 900MPa, wherein carbon fiber tape intensity is especially up to more than the 2000Mpa, therefore consolidation effect of the present invention is very good, simultaneously, utilize pneumatic baling press to construct, convenient and easy.Steel band material among the present invention can be chosen according to different needs, and its durability is good.
The present invention is applicable to the joint reinforcing in various material types and various cross sections, draw materials conveniently, with low cost, be applicable to civilian construction, industrial premises, bridge node etc., provide economic, effective, practical reinforcing technique for solving at present a large amount of engineering structures reinforcing reparations, effectively improve the functional performance and the application life of existing engineering structures, the antidetonation that effectively the improves existing engineering structures ability of taking precautions against natural calamities has great social significance.

Claims (10)

1. component node reinforcement means in building, plural member intersects at common node, with other member the definition of the component of maximum cross surfaces mutually being arranged is main member (1), other is secondary member (2), it is characterized in that, on main member (1), with the crossing position of each secondary member (2), length direction perpendicular to main member (1), open equally spaced groove, the groove that steel band hoop (3) edge is opened seals around main member (1) then, the spacing of described groove is identical with steel band hoop spacing, and groove width equals or be slightly larger than the width of steel band hoop (3).
2. component node reinforcement means in building, two members intersect at common node, it is characterized in that, on the phase cross surface of arbitrary member,, open equally spaced groove perpendicular to the length direction of this member, then with steel band hoop (3) along the groove opened, around this member sealing, the spacing of described groove is identical with steel band hoop spacing, and groove width is slightly larger than the width of steel band hoop (3).
3. according to component node reinforcement means in the building of right 1 requirement, it is characterized in that,, also split an emissions groove mutually at the secondary member (2) and the corresponding position of slotting.
4. according to component node reinforcement means in the building of right 1 requirement, it is characterized in that described groove is opened at the position that each secondary member (2) is gone up and main member (1) intersects.
5. according to component node reinforcement means in right 1, the 3 or 4 described buildings, it is characterized in that, steel band hoop (3) by pass in slotting after, adopt pneumatic baling press to install, detain (4) with packing and forever seal fixing.
6. component node reinforcement means in the building according to claim 5 is characterized in that, treat steel band packing install form steel band hoop (3) after, expect sulculus is tamped with grouting.
7. according to component node reinforcement means in claim 1, the 3 or 4 described buildings, it is characterized in that, also can substitute described groove with the hole.
8. component node reinforcement means in the building according to claim 1 is characterized in that, the intensity of described steel band hoop (3) is more than the 800MPa, and thickness is 0.5~1.5mm.
9. component node reinforcement means in the building according to claim 1 is characterized in that, described steel band hoop (3) material is the steel band that turns blue, stainless steel band, galvanized steel or carbon fiber tape.
10. component node reinforcement means in the building according to claim 1, it is characterized in that, described node is the node of concrete component and concrete component, masonry member, wood members, the perhaps node of masonry member and masonry member, wood members, the perhaps node of wood members and wood members.
CN2010105755724A 2010-12-02 2010-12-02 Method for strengthening node of structural members in building Expired - Fee Related CN102051984B (en)

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CN102051984B CN102051984B (en) 2012-06-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239676A (en) * 2015-10-30 2016-01-13 华南理工大学 Reinforcement structure for frame beam column joint and construction method thereof
CN105257014A (en) * 2015-09-11 2016-01-20 浙江理工大学 Bearing platform-beam column joint replacement advance reinforcement hoop structure
CN110485263A (en) * 2019-08-09 2019-11-22 南昌大学 A kind of multidirectional limit energy consumption anti-seismic stop structure of Self-resetting
CN111441469A (en) * 2020-04-23 2020-07-24 华南理工大学 FRP hoop node of thin-wall circular steel tube regenerated block concrete structure
CN113294007A (en) * 2021-05-25 2021-08-24 上海建工一建集团有限公司 Existing concrete column reinforcing structure and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2723551Y (en) * 2004-07-13 2005-09-07 建研科技股份有限公司 Frame beam and pole node reinforcing device
CN101004108A (en) * 2007-01-18 2007-07-25 广州大学 Method for reinforcing space nodes of beam column built from concrete
FR2902814A1 (en) * 2006-06-22 2007-12-28 Jean Louis Desbordes Earthquake resistant portico support node for building, has joints connecting node with cross-pieces and comprising core constituted of cables passing on pulleys, and case comprising dampening bar that dampens voltage peaks of cables
CN101649678A (en) * 2009-07-24 2010-02-17 天地金草田(北京)科技有限公司 Structure for strengthening node of beam column by section increase method and construction method thereof
CN101748900A (en) * 2009-12-10 2010-06-23 华侨大学 Reinforcement method of reinforced concrete beam column node

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2723551Y (en) * 2004-07-13 2005-09-07 建研科技股份有限公司 Frame beam and pole node reinforcing device
FR2902814A1 (en) * 2006-06-22 2007-12-28 Jean Louis Desbordes Earthquake resistant portico support node for building, has joints connecting node with cross-pieces and comprising core constituted of cables passing on pulleys, and case comprising dampening bar that dampens voltage peaks of cables
CN101004108A (en) * 2007-01-18 2007-07-25 广州大学 Method for reinforcing space nodes of beam column built from concrete
CN101649678A (en) * 2009-07-24 2010-02-17 天地金草田(北京)科技有限公司 Structure for strengthening node of beam column by section increase method and construction method thereof
CN101748900A (en) * 2009-12-10 2010-06-23 华侨大学 Reinforcement method of reinforced concrete beam column node

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257014A (en) * 2015-09-11 2016-01-20 浙江理工大学 Bearing platform-beam column joint replacement advance reinforcement hoop structure
CN105239676A (en) * 2015-10-30 2016-01-13 华南理工大学 Reinforcement structure for frame beam column joint and construction method thereof
CN110485263A (en) * 2019-08-09 2019-11-22 南昌大学 A kind of multidirectional limit energy consumption anti-seismic stop structure of Self-resetting
CN111441469A (en) * 2020-04-23 2020-07-24 华南理工大学 FRP hoop node of thin-wall circular steel tube regenerated block concrete structure
CN113294007A (en) * 2021-05-25 2021-08-24 上海建工一建集团有限公司 Existing concrete column reinforcing structure and method

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Effective date of registration: 20201222

Address after: 224000 factory building No.5, ChenLiang Town Industrial Park, Funing County, Yancheng City, Jiangsu Province (n)

Patentee after: Yancheng Desheng boring and milling machining Co.,Ltd.

Address before: 710055 No. 13, Yanta Road, Shaanxi, Xi'an

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Address after: 710000 Room 601, building 45, No. 13, middle section of Yanta Road, Beilin District, Xi'an City, Shaanxi Province

Patentee after: Yang Yong

Address before: 224000 factory building No.5, ChenLiang Town Industrial Park, Funing County, Yancheng City, Jiangsu Province (n)

Patentee before: Yancheng Desheng boring and milling machining Co.,Ltd.

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Granted publication date: 20120627