CN102852281B - A kind of have the prestressing force precast main beam of shelving breach - Google Patents
A kind of have the prestressing force precast main beam of shelving breach Download PDFInfo
- Publication number
- CN102852281B CN102852281B CN201210291532.6A CN201210291532A CN102852281B CN 102852281 B CN102852281 B CN 102852281B CN 201210291532 A CN201210291532 A CN 201210291532A CN 102852281 B CN102852281 B CN 102852281B
- Authority
- CN
- China
- Prior art keywords
- beam body
- breach
- embedded
- precast main
- precast
- 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.)
- Active
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of have the prestressing force precast main beam of shelving breach, comprise Liang Tihe and be embedded in prestress wire as main muscle in described beam body, stirrup is provided with in described beam body, the part of described stirrup stretches out in the upper surface of described beam body, it is characterized in that: described beam body is at least longitudinally provided with some breach in its top, side.Precast beam of the present invention stays the portion of setting a trap to shelve breach compared with unnotched prestressed girder, the construction stage supporting capacity of precast beam can not reduce substantially, thus the overall height of superposed beam can be reduced, simultaneously girder at secondary beam lay-down position by burying joint bar underground and steel plate makes the shear strength of the old and new's concrete bonding surface improve, the globality raising that primary-secondary beam combines.
Description
Technical field
The present invention relates to a kind of building prefabricated components, particularly relate to a kind of reinforced concrete precast beam for the employing pretensioned prestressing in building.
Background technology
Traditional precast main beam usually adopt reduce precast beam back height or stay the way of breach solve the secondary beam construction stage shelve problem temporarily, this method can increase the overall height of superposed beam, or girder amount of reinforcement can be controlled by the construction stage, when especially not establishing prop under construction stage beam, the deck-molding of girder is large, arrangement of reinforcement is large, architectural space clear height is caused to reduce and reinforcing bar waste, applicant is published in addition a kind ofly establishes the patent of wearing secondary beam steel strand through hole in girder, precast beam puts stage beam stress performance at prestressing force can be reduced, make also more difficult, a kind of local of staying is shelved breach and is not established the precast main beam of wearing secondary beam steel strand through hole to be intended to solve the problem.
Summary of the invention
Technical problem to be solved by this invention is the deficiency overcoming above-mentioned prior art, provide a kind of facilitate precast beam install and easy construction, prestressing force precast main beam that cost is low.
A kind ofly the prestressing force precast main beam of shelving breach is had according to provided by the invention, comprise Liang Tihe and be embedded in prestress wire as main muscle in described beam body, stirrup is provided with in described beam body, the part of described stirrup stretches out in the upper surface of described beam body, described beam body is at least longitudinally provided with some breach in its top, side, laterally embedding in square beam body under described breach have some joint bars, joint bar exposes beam sides certain length, is embedded with at least one piece of anti-shear steel plate in the beam body between described joint bar and breach.
A kind ofly the prestressing force precast main beam of shelving breach is had also to have following attached technical characteristic according to provided by the invention:
Described beam end of body bight is embedded with angle steel built-in fitting, and angle steel is welded with anchor bar.
In described beam body, joint bar is vertically placed between steel strand or on steel strand, and at least one end of joint bar is that right angle upwards bends and is embedded in beam body side surface, and flush with beam sides outside joint bar, joint bar diameter is less than
Described anti-shear steel plate stretches into or through beam body, steel plate vertically stretches out beam body side surface certain length, and steel plate end is hypotenuse.
Described anti-shear steel plate at least one end is level right angle bending, and bending part steel plate external surface is equal with beam body side surface.
Described beam body upper notch bottom surface is provided with steel strand, and steel strand pre-tensioning system is constructed.
Under breach, be embedded with U-shaped in described beam body and hang muscle, hang muscle upper end and expose beam upper surface certain length.
The described prestress wire part cover as main muscle has sleeve pipe, and sleeve pipe is embedded in beam end.
The end lower of described beam body is embedded with the additional anticracking power consumption reinforcing bar of certain length, and reinforcing bar stretches out the end certain length of beam body.
Described beam body is shelving the upper longitudinal of gap position place beam to being embedded with shaped steel or stiffener.
According to provided by the invention a kind of have shelve breach prestressing force precast main beam compared with prior art tool have the following advantages: first, precast beam stays the portion of setting a trap to shelve breach compared with unnotched prestressed girder, the construction stage supporting capacity of precast beam can not reduce substantially, thus can reduce the overall height of superposed beam; Secondly, girder at secondary beam lay-down position by burying joint bar underground and steel plate makes the shear strength of the old and new's concrete bonding surface improve, the globality raising that primary-secondary beam combines; Again, the built-in process dug out again after the pre-buried form removal of first bending of steel bar concrete anti-shear steel plate, not only makes formwork support process simplify, and the degree of roughness of digging out rear the old and new's concrete bonding surface increases, and the normal section shear behavior of bonding surface improves; Finally, because this method secondary beam shelves good stability, as design strength is allowed, temporary support under beam can not be established, greatly facilitate floor height large or establish the building engineering construction of prop condition difference.
Accompanying drawing explanation
Fig. 1 is front view of the present invention
Fig. 2 is arrangement of reinforcement of the present invention
Fig. 3 is section of the present invention and arrangement of reinforcement
Fig. 4 is pre-buried shear resisting board work progress figure of the present invention
Detailed description of the invention
See Fig. 1 to Fig. 4, what provide in the present invention a kind ofly has in the embodiment of the prestressing force precast main beam of shelving breach, the prestress wire 2 comprising beam body 1 and be embedded in as main muscle in described beam body, stirrup 11 is provided with in described beam body 1, the part of described stirrup stretches out in the upper surface of described beam body, and described beam body 1 at least its top, side is longitudinally provided with some breach 12.Laterally embedding in square beam body under described breach have some joint bars 13, and joint bar 13 exposes beam sides certain length, is embedded with at least one piece of anti-shear steel plate 14 in the beam body between described joint bar 13 and breach 12.The primary-secondary beam junction on beam body 1 top is established breach 12 to be convenient to secondary beam and is shelved, but precast beam does not reduce at construction stage stressed height, thus reduce superposed beam overall height, joint bar 13 and the lower rebar of secondary beam overlap and the whole concrete that waters is linked to be entirety, greatly can improve the overall performance of primary-secondary beam, if anti-shear steel plate 14 stretches in secondary beam as increasing the normal section shear strength of the old and new's concrete bonding surface.
See Fig. 1, Fig. 3, in above-described embodiment that the present invention provides, described beam body 1 upper notch 12 bottom surface or and symmetrical two breach between beam top be equipped with steel strand 3, steel strand pre-tensioning system is constructed, the upper steel twisted wire 3 avoiding breach 12 can balance recurvation square when bottom steel strand 2 are put and antiarch, makes beam top there will not be crack.
See Fig. 2, in above-described embodiment that the present invention provides, prestress wire part cover as main muscle has sleeve pipe 21, sleeve pipe 21 is embedded in beam end, beam-ends low portion and steel strand 3 overlap the sleeve pipe 21 of certain length, can eliminate the bonding of concrete and steel strand 3, and discharge prestressing force, the stress that minimizing beam-ends produces because of prestressing force is concentrated, and reduces the Stress superposition of superposed beam operational phase under hogging moment effect simultaneously.
See Fig. 1, Fig. 2, in above-described embodiment that the present invention provides, beam-ends bottom is embedded with the additional anticracking power consumption reinforcing bar 5 of certain length, reinforcing bar 5 stretches out beam-ends certain length, anchor into the additional anticracking power consumption reinforcing bar 5 in post, can solve because elongation rate after steel strand 3 sleeve pipe 21 is bigger than normal, and make the problem that beam ftractures ahead of time under positive bending moment effect, the additional bar of low-yield can also enter plastic state ahead of time and increase the power consumption of beam-ends " plastic hinge " simultaneously.
See Fig. 1, in the embodiment that the present invention provides, bight, described beam body 1 end is embedded with angle steel built-in fitting 4, angle steel is welded with anchor bar, angle steel built-in fitting 4 can weld with built-in fitting post shelved a little, guarantee the stability and security of beam, this built-in fitting can also prevent beam corner crack and damage simultaneously.
See Fig. 2, Fig. 3, in the embodiment provided in the present invention, described in shelve the beam upper longitudinal of gap position to being embedded with shaped steel or stiffener 16, be for strengthening the compressive strength of the most weak area of this resistance to compression in the construction stage.
Claims (10)
1. one kind has the prestressing force precast main beam of shelving breach, comprise Liang Tihe and be embedded in prestress wire as main muscle in described beam body, stirrup is provided with in described beam body, the part of described stirrup stretches out in the upper surface of described beam body, it is characterized in that: described beam body is at least longitudinally provided with some breach in its top, side, laterally embedding in square beam body under described breach have some joint bars, joint bar exposes beam sides certain length, is embedded with at least one piece of anti-shear steel plate in the beam body between described joint bar and breach.
2. precast main beam as claimed in claim 1, is characterized in that described beam end of body bight is embedded with angle steel built-in fitting, angle steel is welded with anchor bar.
3. precast main beam as claimed in claim 1, is characterized in that in described beam body, joint bar is vertically placed between steel strand or on steel strand, and at least one end of joint bar is that right angle upwards bends and is embedded in beam body side surface, and flush with beam sides outside joint bar, joint bar diameter is less than
4. precast main beam as claimed in claim 1, is characterized in that described anti-shear steel plate stretches into or through beam body, steel plate vertically stretches out beam body side surface certain length, and steel plate end is hypotenuse.
5. precast main beam as claimed in claim 1, it is characterized in that described anti-shear steel plate at least one end be level right angle bending, bending part steel plate external surface is equal with beam body side surface.
6. precast main beam as claimed in claim 1, it is characterized in that described beam body upper notch bottom surface is provided with steel strand, steel strand pre-tensioning system is constructed.
7. precast main beam as claimed in claim 1, is characterized in that under breach, being embedded with U-shaped in described beam body hangs muscle, hangs muscle upper end and exposes beam upper surface certain length.
8. precast main beam as claimed in claim 1, it is characterized in that the described prestress wire part cover as main muscle has sleeve pipe, sleeve pipe is embedded in beam end.
9. precast main beam as claimed in claim 1, it is characterized in that the end lower of described beam body is embedded with the additional anticracking power consumption reinforcing bar of certain length, reinforcing bar stretches out the end certain length of beam body.
10. precast main beam as claimed in claim 1, is characterized in that described beam body is shelving the upper longitudinal of gap position place beam to being embedded with shaped steel or stiffener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210291532.6A CN102852281B (en) | 2012-08-16 | 2012-08-16 | A kind of have the prestressing force precast main beam of shelving breach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210291532.6A CN102852281B (en) | 2012-08-16 | 2012-08-16 | A kind of have the prestressing force precast main beam of shelving breach |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102852281A CN102852281A (en) | 2013-01-02 |
| CN102852281B true CN102852281B (en) | 2015-12-30 |
Family
ID=47399223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210291532.6A Active CN102852281B (en) | 2012-08-16 | 2012-08-16 | A kind of have the prestressing force precast main beam of shelving breach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102852281B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179251B (en) * | 2014-07-28 | 2017-01-11 | 南京长江都市建筑设计股份有限公司 | Connection joint of primary precast beam and secondary precast beam comprising T-shaped shear-resistant steel plate as well as connection method |
| CN105256891B (en) * | 2015-09-17 | 2018-02-06 | 东南大学 | High-strength bottom muscle Precast Concrete Frame |
| CN105544736B (en) * | 2015-12-02 | 2018-08-21 | 上海欧本钢结构有限公司 | A kind of connection structure of concrete prefabricated beam and girder steel |
| CN106592865B (en) * | 2016-11-17 | 2019-04-09 | 重庆建工第三建设有限责任公司 | Prefabricated concrete lintel |
| CN112458925A (en) * | 2020-12-02 | 2021-03-09 | 中交路桥建设有限公司 | Segment precast beam structure and construction method for splicing and combining bridge thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023567A (en) * | 2005-07-14 | 2007-02-01 | Ohbayashi Corp | Connection structure of precast concrete beam members, and connection method for the same |
| WO2010131995A1 (en) * | 2009-05-15 | 2010-11-18 | Makarov Andrey Georgievich | Joint assembly of an interfloor connection of the elements of a three-dimensional building frame |
| CN201785941U (en) * | 2010-09-28 | 2011-04-06 | 杨峰 | Pretensioned prestressed reinforced concrete precast beam |
| CN102418401A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Pretensioning prestressed reinforced concrete precast beam |
| CN102418400A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Pretensioning prestressed reinforced concrete precast beam |
| CN202831386U (en) * | 2012-08-16 | 2013-03-27 | 杨众 | Prestressed prefabricating main beam with laying notches |
-
2012
- 2012-08-16 CN CN201210291532.6A patent/CN102852281B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023567A (en) * | 2005-07-14 | 2007-02-01 | Ohbayashi Corp | Connection structure of precast concrete beam members, and connection method for the same |
| WO2010131995A1 (en) * | 2009-05-15 | 2010-11-18 | Makarov Andrey Georgievich | Joint assembly of an interfloor connection of the elements of a three-dimensional building frame |
| CN201785941U (en) * | 2010-09-28 | 2011-04-06 | 杨峰 | Pretensioned prestressed reinforced concrete precast beam |
| CN102418401A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Pretensioning prestressed reinforced concrete precast beam |
| CN102418400A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Pretensioning prestressed reinforced concrete precast beam |
| CN202831386U (en) * | 2012-08-16 | 2013-03-27 | 杨众 | Prestressed prefabricating main beam with laying notches |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102852281A (en) | 2013-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202831203U (en) | Assembly type concrete frame-shear wall split assembling structure and fabricative structure | |
| CN102852281B (en) | A kind of have the prestressing force precast main beam of shelving breach | |
| CN104153287B (en) | There is the section assembling concrete frame bridge pier system and method for self-resetting capability | |
| CN103088915B (en) | A kind of cast-in-place post with cap and construction method | |
| CN101787733A (en) | Prefabricated vertical member | |
| CN103510639B (en) | A kind of can the overlaid plate type shear wall of restore funcitons and implementation method thereof | |
| CN102900168A (en) | Splitting and assembling structure and assembling connecting method of assembled type concrete frame-shear wall | |
| CN207194006U (en) | A kind of prefabricated concrete retaining wall | |
| CN104234192A (en) | Prestress concrete groove type plate with bent steel bars at upper part and framework structure system | |
| CN101793075A (en) | Semi-precast beam | |
| CN105220792B (en) | A kind of prefabricated concealed bracings energy-consuming shear wall and its assemble method | |
| CN103726589A (en) | H-shaped steel and steel pipe framework assembly shear wall with protruding interfaces and bent steel bars and manufacturing method | |
| CN201794217U (en) | Pretensioned prestressing reinforced concrete precast beam | |
| CN103088962B (en) | A kind of pretensioned prestressing reinforced concrete precast beam | |
| CN202831386U (en) | Prestressed prefabricating main beam with laying notches | |
| CN102852279B (en) | A kind of prestressed reinforced concrete composite beam of convex-concave superposed surfaces | |
| CN102852280B (en) | The prestressing force precast beam of head shelved by a kind of band | |
| CN208563658U (en) | A kind of prefabricated lattice compound shear wall assembly monomer | |
| CN106337512A (en) | The bottom reinforced concrete-filled steel tubular frame high-strength concrete composite shear wall and manufacturing method | |
| CN105839912A (en) | Molding bracket for shear wall of building | |
| CN102852277A (en) | Pre-tensioned deformed reinforced concrete precast main beam | |
| CN202831389U (en) | Pre-tensioning method deformed reinforced concrete pre-cast primary beam | |
| CN202831387U (en) | Prestressed reinforced concrete composite beam with concavo-convex composite surface | |
| CN201794216U (en) | Reinforced concrete prefabricated beam pre-stressed by pre-tensioning method | |
| CN202831390U (en) | Prestressed precast beam with shelved head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Jiangdong District Baizhang road 315000 in Zhejiang province Ningbo City Exhibition Center No. 168 28C Applicant after: Yang Zhong Applicant after: Yang Feng Address before: 315000, AUX Road, No. 757 Li RI Road, Yinzhou District, Ningbo, Zhejiang, 502 Applicant before: Yang Zhong Applicant before: Yang Feng |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |