CN108487462B - Anchoring method for steel bars in concrete frame node - Google Patents
Anchoring method for steel bars in concrete frame node Download PDFInfo
- Publication number
- CN108487462B CN108487462B CN201810250217.6A CN201810250217A CN108487462B CN 108487462 B CN108487462 B CN 108487462B CN 201810250217 A CN201810250217 A CN 201810250217A CN 108487462 B CN108487462 B CN 108487462B
- Authority
- CN
- China
- Prior art keywords
- length
- main
- bar
- anchoring
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005452 bending Methods 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 26
- 230000007547 defect Effects 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 8
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention belongs to the technical field of buildings and discloses a (anti-seismic) anchoring method for steel bars in concrete frame nodes, which comprises the following steps of: cutting 5d (diameter of longitudinal bar) short steel bar, welding with main bar and determining main bar La(LaE) Length and bending point, bending, etc. The 5d (diameter of longitudinal bar) short steel bar is cut and welded with the main bar in a sticking mode, construction cutting waste is fully utilized, the advantage of mechanical anchoring is played, and the quality of a welding seam needs to be ensured; the calculation main rib La(LaE) Length and bending point, main rib La(LaE) The length can be shortened to 0.6Lab(0.6LabE) And is beneficial to the convenience and flexibility of site construction. By implementing the construction method, the length of the straight anchor of the beam longitudinal bar in the column is improved to be not less than 0.4Lab(0.4LabE) A defect of conditional restriction; the defect of the current unicity of the anchoring method of the main reinforcement in the beam column node is overcome; the phenomenon of inconvenient construction is avoided, waste materials are consumed, and energy and trouble are saved.
Description
Technical Field
The invention mainly relates to an anchoring method of steel bars in concrete frame nodes, and belongs to the technical field of buildings.
Background
According to the requirements of construction specifications and design of building structures, the concrete and the steel bars can be effectively combined together, respective advantages are brought into play, human benefits are brought, and the purposes of research and use are achieved. The reinforcing steel bars and the concrete can be combined into a whole, and the reinforcing steel bars and the concrete have enough anchoring length to play a role of tensile resistance, otherwise, the concrete and the reinforcing steel bars must be separated and cannot work together, namely, the members are damaged.
In engineering design, for the end node of the middle layer of the frame, when the beam rib 90 is adopted in the anchoring of the longitudinal reinforcing steel bar of the beam at the position of the column node0When bending and anchoring, the length of the vertical bar of the beam extending into the column is required to be not less than 0.4Lab(0.4LabE) The parameters are related to the size of the cross section of the column, the diameter and strength grade of the anchoring steel bar, the strength of the concrete, the type of the steel bar and the like. In practice, the length of the vertical anchor extending into the column by the longitudinal bar of the beam at a local position is often less than 0.4Lab(0.4LabE) Generally, the method for processing the condition is to replace longitudinal bars in the beam with small-diameter longitudinal bars, but the method often causes the condition that the number of the reinforcing bars at the beam-column joints is too large, and sometimes the beam-column joints are seriously influencedIn the construction of concrete, if the long reinforcing steel bars are replaced by the long reinforcing steel bars, namely, the long reinforcing steel bars are overlapped, a lot of inconvenience is brought to the construction, the workload of construction reinforcement is increased, and steel is wasted.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the prior defect and provides a (anti-seismic) anchoring method for steel bars in concrete frame joints, wherein the total anchoring length is L by adopting a method of sticking and welding anchor bars on one side of a main bara(LaE). The anchoring method improves the condition that the length of the vertical anchor extending into the column by the longitudinal bar of the beam is not less than 0.4Lab(0.4LabE) A defect of conditional restriction; in addition, by adopting the anchoring method, the phenomenon of excessive steel bars at the beam column node caused by steel bar replacement is avoided, the phenomenon of construction inconvenience caused by the steel bar replacement is also avoided, the workload of construction reinforcement allocation is reduced, some redundant steel bar short ends on a construction site are consumed, energy and trouble are saved, the flexibility of handling the anchoring matters on the construction site is improved, and the problems in the background technology can be effectively solved.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention mainly provides a (anti-seismic) anchoring method for steel bars in concrete frame nodes, and the components or work required to be installed and completed in the method comprises the following steps: calculating, measuring and cutting 5d (diameter of longitudinal bar) short steel bar, welding short steel bar and main bar, and calculating main bar La(LaE) Length of (2) and determining bending point, bending main rib (90)0) And installing and binding main ribs and the like. The calculation, measurement and cutting of the short steel bar with the length of 5d (the diameter of the longitudinal bar) are necessary in a mechanical anchoring method, the short steel bar with the length of 5d (the diameter of the longitudinal bar) is an accessory of the anchoring mode, and by adopting the anchoring mode, the local extrusion effect of an anchor head at the end part of the stressed steel bar on concrete can be utilized to increase the anchoring bearing capacity; the short reinforcing bar head and the main bar are welded, the cut short reinforcing bar head and the cut main bar are welded, and the method is a mechanical anchoring methodAnd the welding quality; the calculation main rib La(LaE) Is determined by the length of (1) and the bending point is determined as La(LaE) The total anchoring length of the main reinforcement is required to be determined, and according to the standard requirement, when the mechanical anchoring length is adopted, the main reinforcement La(LaE) Can be shortened to 0.6Lab(0.6LabE) I.e. anchor length correction factor ζaThe bending point of the main rib can be 0.6, and the bending point of the main rib is determined according to the factors such as the section size of the column, the diameter of the column rib and the like; the bent main rib (90)0) Applying 90 to the main ribs according to the determined bending points0Bending; the installation and binding of the main ribs are realized by placing the bent main ribs into corresponding positions and fixing the bent main ribs.
As a preferred technical scheme of the invention, the 5d (diameter of longitudinal bar) short steel bar is calculated, measured and cut, and the short steel bar head is adopted, so that the cutting waste material of a construction site is fully utilized, the energy and trouble are saved, the cost is saved, and the investment cost is saved.
As a preferred technical scheme of the invention, the short steel bars and the main steel bars are welded in a sticking mode, and a mechanical anchoring mode is adopted, and the anchoring bearing capacity is increased by utilizing the local extrusion effect of anchor heads at the end parts of stressed steel bars on concrete, so that certain straight anchor length and welding quality need to be controlled.
As a preferred technical scheme of the invention, the calculation main reinforcement La(LaE) The length and the bending point are determined, the mechanical anchoring mode is adopted, and the main rib La(LaE) Can be shortened to 0.6Lab(0.6LabE) I.e. anchor length correction factor ζaCan be 0.6, not only increases the flexibility of handling the anchoring matters on the construction site, but also saves energy and trouble.
As a preferred technical scheme of the invention, the bent main rib (90)0) Is due to the presence of more than 0.2Lab(0.2LabE) The main ribs with the length can not be directly anchored in the column and can only be processed by bending anchors, and meanwhile, the safety storage of the anchoring mode is increased.
Compared with the prior art, the technical scheme of the invention can achieve the following beneficial effects:
1. by adopting the mode of combining the bent anchor with the unilateral welding mechanical anchor, the length that the longitudinal bar of the beam stretches into the column and the straight anchor is not less than 0.4L in the prior art is improvedab(0.4LabE) A conditional limitation.
2. The short steel bar head with the length of 5d is welded on one side, so that the defects that field cutting waste cannot be used fully and reasonably and a main bar anchoring form is single in the prior art are overcome.
3. The main rib L adopts the mode of combining the bent anchor with the single-side welding mechanical anchora(LaE) Can be shortened to 0.6Lab(0.6LabE) The method is between two anchoring modes in the prior art, and overcomes the defects that the anchoring matters are not flexible enough, and the materials and the labor are wasted in the prior art.
4. By adopting the mode of combining the bent anchor with the single-side welding mechanical anchor, the defect of insufficient safety reserve of the anchoring mode in the prior art is overcome.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention.
In the drawings:
figure 1 is a plan view of a method of (seismic) anchoring of reinforcement bars in concrete frame joints according to an embodiment of the present invention;
fig. 2 (section 1-1) is a plan view of a method of (seismic) anchoring of reinforcement bars in concrete frame joints according to an embodiment of the present invention.
Reference numbers in the figures: 1. 5d (diameter of longitudinal bar), welding the short steel bar with the longitudinal bar; 2. longitudinal ribs on the upper part of the beam; 3. bending points of the longitudinal ribs on the upper part of the beam; 4. a concrete column; 5. a concrete beam.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it is to be understood that the preferred embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example (b): referring to fig. 1 and 2 (section view of 1-1), the present invention is a (anti-seismic) anchoring method for steel bars in concrete frame nodes, and the method is implemented by the following components or work: calculating, measuring and cutting 5d (diameter of longitudinal bar) short steel bar (1), welding short steel bar with main bar (2) and calculating main bar La(LaE) The length of the beam column is determined, the bending point is determined and the beam column is bent (3), and main ribs (4) and (5) are installed and bound in the beam column. The method has the advantages that 5d (diameter of longitudinal bar) of short steel bar (1) is calculated, measured and cut, cutting waste materials of a construction site are fully utilized, energy and trouble are saved, cost is saved, investment cost is saved, and the current situation of the construction site about the singleness of an anchoring construction mode is changed; the short steel bars and the main steel bars are welded (2) in a sticking mode, so that the local extrusion effect of anchor heads at the end parts of the stressed steel bars on concrete is facilitated to increase the anchoring bearing capacity, and a certain straight anchor length and welding quality need to be controlled, so that the mechanical anchoring mode is realized; the calculation main rib La(LaE) And determining the bending point and bending (3), and adopting the mechanical anchoring mode, the main rib La(LaE) Can be shortened to 0.6Lab(0.6LabE) I.e. anchor length correction factor ζaCan be taken as 0.6, not only is the construction convenience and flexibility of the construction site facilitated, but also the energy is saved and the trouble is saved; the beam column is internally provided with and bound with the main ribs (4) and (5), which are necessary to complete the binding of the main ribs in the beam column and are beneficial to preventing the main ribs from moving.
By implementing the construction method, the length of the vertical anchor extending into the column by the longitudinal bar of the beam is improved to be not less than 0.4Lab(0.4LabE) A defect of conditional restriction; in addition, by adopting the anchoring method, the defect of the single anchoring method of the main reinforcement in the beam column node in the field construction is improved; meanwhile, the phenomenon of construction inconvenience caused by the construction is avoided, the workload of construction reinforcement is reduced, some redundant short reinforcing steel bars on a construction site are consumed, energy and trouble are saved, and the flexibility of handling the anchoring matters on the construction site is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, and correction made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A method for anchoring steel bars in concrete frame joints is realized by the following structural parts or work required to be completed: calculating, measuring and cutting 5d short steel bars (1), wherein d is the diameter of the longitudinal bar, the short steel bars are welded with the main bar in an adhering mode (2), and the main bar L is calculatedaOr LaEThe length of the beam and the determined bending point are bent (3), and main ribs (4) and (5) are installed and bound in the beam column, and the beam column is characterized in that the length of a longitudinal rib at the upper part of the beam extending into the column and a straight anchor is less than 0.4LabOr 0.4LabE。
2. The method of claim 1, wherein the main reinforcement ends are mechanically anchored by welding on one side, the welded short reinforcement length is 5d, and d is the diameter of the longitudinal reinforcement.
3. A method of anchoring reinforcing bars in concrete frame joints according to claim 1, wherein the total anchoring length of the upper beam main bars in the columns is 0.6LabOr 0.6LabEThe total anchor length refers to the projected length.
4. A method of anchoring reinforcing bars in a concrete frame joint according to claim 1, wherein the distance from the upper beam main reinforcement to the inner side of the column after the upper beam main reinforcement is bent into the column is: the column width is-60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250217.6A CN108487462B (en) | 2018-03-26 | 2018-03-26 | Anchoring method for steel bars in concrete frame node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250217.6A CN108487462B (en) | 2018-03-26 | 2018-03-26 | Anchoring method for steel bars in concrete frame node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108487462A CN108487462A (en) | 2018-09-04 |
| CN108487462B true CN108487462B (en) | 2020-09-01 |
Family
ID=63337484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810250217.6A Expired - Fee Related CN108487462B (en) | 2018-03-26 | 2018-03-26 | Anchoring method for steel bars in concrete frame node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487462B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339228A (en) * | 2018-10-10 | 2019-02-15 | 湖南大学 | A kind of bolt fastening structure of full prefabricated concrete structure bean column node |
| CN113006279B (en) * | 2021-03-19 | 2022-05-06 | 山东建筑大学 | Inorganic adhesive composite bamboo-wood structure middle beam-column connection node, frame structure and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617483A (en) * | 1992-07-03 | 1994-01-25 | Taisei Corp | Composite beam |
| JPH10292483A (en) * | 1997-04-15 | 1998-11-04 | Mitsui Constr Co Ltd | Fixing method of beam reinforcement |
| CN1161525C (en) * | 2002-05-09 | 2004-08-11 | 张晓萌 | Method for lapped joint or anchoring of reinforcing bars in reinforced concrete member |
| JP2004316322A (en) * | 2003-04-18 | 2004-11-11 | Takenaka Komuten Co Ltd | Construction method of column-beam skeleton by precast concrete member |
| CN202187283U (en) * | 2011-07-20 | 2012-04-11 | 天津市市政工程设计研究院 | Structure of combined beam-concrete beam combined section |
| CN103061452B (en) * | 2012-08-16 | 2017-04-19 | 杨众 | Anti-seismic prestressed precast beam |
| CN203716304U (en) * | 2013-08-20 | 2014-07-16 | 浙江精工钢结构集团有限公司 | Flat-plate type embedded part |
| CN104131631B (en) * | 2014-08-15 | 2016-06-08 | 重庆大学 | A kind of construction method of earthquake-proof frame top story knee joint structure |
| CN204475530U (en) * | 2015-01-06 | 2015-07-15 | 北京艾梦海洋科技有限公司 | A kind of horizontal anchor structure of reinforcing bar short distance of new concrete beam |
| CN105239670A (en) * | 2015-09-28 | 2016-01-13 | 沈阳建筑大学 | Non-planar beam-wall connection structure |
-
2018
- 2018-03-26 CN CN201810250217.6A patent/CN108487462B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108487462A (en) | 2018-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107476476B (en) | One kind is greatly across steel bar truss floor support plate and reinforced beam combination constructing method thereof | |
| US10161090B2 (en) | Method for launching/constructing bridge using assembly of precast bottom plate and concrete-filled steel tube truss girder | |
| WO2018233440A1 (en) | Node connection structure for prestressed prefabricated concrete frame and construction method thereof | |
| CN105736017B (en) | A kind of positive and negative arrangement arch frame structure of Tunnel asymmetric cell | |
| CN207633612U (en) | A kind of special full precast floor slab of assembling type steel structure | |
| CN108487462B (en) | Anchoring method for steel bars in concrete frame node | |
| CN207512622U (en) | A kind of road and bridge crack ruggedized construction | |
| WO2019149271A1 (en) | Assembled concrete pier system having mixed configuration of frp ribs and regular steel ribs | |
| WO2021083299A1 (en) | Method for shear-resistant reinforcement of oblique section of wide hollowcore slab | |
| CN103498524A (en) | Overlaid plate/beam with enhanced steel bar truss and connecting method of support of overlaid plate/beam | |
| CN102635177A (en) | Un-bonded concealed bracing type shear wall for reinforced concrete frame and construction method thereof | |
| CN110258789A (en) | A kind of beam-column connection and its construction method that energy consumption rod iron is replaceable | |
| CN104831818A (en) | Connection node of precast reinforced concrete beam and laminated column | |
| CN110965841A (en) | Reinforcing method of power transmission angle steel tower | |
| CN107795056A (en) | A kind of special full precast floor slab of assembling type steel structure | |
| CN201474095U (en) | Combined connection device of reverse construction concrete beam steel bar and positive construction type steel column | |
| US9469993B2 (en) | Point-supported element or flat concrete ceiling | |
| CN204753836U (en) | Connected node of precast reinforced concrete roof beam and coincide post | |
| CN111577336A (en) | Section steel and sprayed concrete combined stiff structure tunnel supporting system and construction method | |
| KR101258842B1 (en) | On-site Joint of the Prefabricated Re-bar Column to Re-bar Girders | |
| CN104863267A (en) | Novel beam-column reinforced joint with variable-thickness flange at end part of beam | |
| CN104929279B (en) | Pre-cast shear wall vertical rebar centralized restraint lap joint construction | |
| CN105133786A (en) | Hollow type combination beam for quick construction and construction method | |
| CN103061357A (en) | Connection joint between basement base plate and underground diaphragm wall | |
| CN205259072U (en) | Hollow mound of railway formwork support system that binds |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |