CN109184077A - One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete and its construction method - Google Patents
One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete and its construction method Download PDFInfo
- Publication number
- CN109184077A CN109184077A CN201811209426.2A CN201811209426A CN109184077A CN 109184077 A CN109184077 A CN 109184077A CN 201811209426 A CN201811209426 A CN 201811209426A CN 109184077 A CN109184077 A CN 109184077A
- Authority
- CN
- China
- Prior art keywords
- concrete
- cased
- rolled steel
- steel section
- girder
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Joining Of Building Structures In Genera (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
It casts anchor the invention discloses one kind and applies prestressed girder with rolled steel section en cased in concrete and its construction method, girder with rolled steel section en cased in concrete includes column footing component, multiple structural columns are provided on the column footing component, the girder with rolled steel section en cased in concrete of single-layer or multi-layer is provided between the structural column, drop-down component is provided at the column root of the structural column, the drop-down component applies prestressing force to the fashioned iron in girder with rolled steel section en cased in concrete before casting concrete；Its construction method, comprising the following steps: the fashioned iron in construction column footing component, structural column and girder with rolled steel section en cased in concrete；Connection drop-down component makes the fashioned iron in girder with rolled steel section en cased in concrete generate downward power by applying pretension to drop-down component；Casting concrete removes the pretension of drop-down component, removes drop-down component after concrete reaches intensity；Construction is completed.The present invention can reduce the load that armored concrete part is born in girder with rolled steel section en cased in concrete, and the crack quantity and fracture width of girder with rolled steel section en cased in concrete is effectively reduced.
Description
Technical field
The invention belongs to civil construction project fields, and in particular to one kind cast anchor apply prestressed girder with rolled steel section en cased in concrete and
Its construction method.
Background technique
Girder with rolled steel section en cased in concrete because of the feature that its rigidity is big, bearing capacity is high, durability is good, fire protecting performance is good, be chiefly used in greatly across,
The high place of big load, space requirement.But the crack of girder with rolled steel section en cased in concrete is generally difficult to control, the size of the area of reinforcement is usual
It is also Crack Control, and fashioned iron, close to the middle part of beam section, stress can make it lower than the stress of steel bar stress on the outside of fashioned iron
The utilization rate of material reduces.
Summary of the invention
The present invention proposes in order to solve the problems existing in the prior art, the purpose is to provide one kind cast anchor apply it is prestressed
Girder with rolled steel section en cased in concrete and its construction method.
The technical scheme is that one kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, including column footing component,
It is provided with multiple structural columns on the column footing component, the steel reinforced concrete of single-layer or multi-layer is provided between the structural column
Beam is provided with drop-down component at the column root of the structural column, and the drop-down component is before casting concrete to girder with rolled steel section en cased in concrete
In fashioned iron apply prestressing force.
The structural column is the vertical applied force component for supporting girder with rolled steel section en cased in concrete.
The girder with rolled steel section en cased in concrete is the lateral stressed component for being used to support superstructure or roof slab, the girder with rolled steel section en cased in concrete
Including concrete, fashioned iron, longitudinal reinforcement and stirrup.
The lower end of the drop-down component is fixed at the column root of structural column, and the other end acts on the type of girder with rolled steel section en cased in concrete
In steel, the drop-down component is that can apply one of cable wire, steel tendon, high-strength steel bar of pretension.
The drop-down component is that single layer is arranged or cross-layer is arranged.
The drop-down component is to be symmetrical set or asymmetric setting.
The column footing component is foundation beam, the raft foundation, understructure that can balance drop-down modular level component
One of beam slab.
A kind of cast anchor applies the construction method of prestressed girder with rolled steel section en cased in concrete, comprising the following steps:
Firstly, the fashioned iron in construction column footing component, structural column and girder with rolled steel section en cased in concrete；
Secondly, after the completion of fashioned iron construction, and before casting concrete, connection drop-down component is pre- by applying to drop-down component
Pulling force makes the fashioned iron in girder with rolled steel section en cased in concrete generate downward power；
Again, the concrete for pouring girder with rolled steel section en cased in concrete removes the pretension of drop-down component, tears open after concrete reaches intensity
Except drop-down component；
Finally, construction complete girder with rolled steel section en cased in concrete Shaped Steel upward power is generated to armored concrete part, thus reduce or
Offset the internal force and crack that armored concrete part generates under downward load action.
The drop-down component is that single layer is arranged or cross-layer setting will pass through among it when drop-down component is that cross-layer is arranged
Floor in reserved opening.
The present invention can answer in advance girder with rolled steel section en cased in concrete application under the premise of not increasing additional counter prestressed component
Power, can less material utilization amount, reduce girder with rolled steel section en cased in concrete in armored concrete part bear load, fashioned iron coagulation is effectively reduced
The crack quantity and fracture width of Tu Liang, at the same increase in girder with rolled steel section en cased in concrete with respect to by middle part fashioned iron stock utilization,
The girder with rolled steel section en cased in concrete of the same stress in same section can have the dosage for reducing material using this technology.
Detailed description of the invention
Fig. 1 is that single layer applies prestressed elevation in the present invention；
Fig. 2 is that cross-layer applies prestressed elevation in the present invention；
Wherein:
1 structural column, 2 girder with rolled steel section en cased in concrete
3 drop-down 4 column footing components of component.
Specific embodiment
Hereinafter, referring to drawings and examples, the present invention is described in detail:
As shown in Figure 1 and 2, one kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, including column footing component 4, base under the column
It is provided with multiple structural columns 1 on plinth component 4, the girder with rolled steel section en cased in concrete 2 of single-layer or multi-layer, institute are provided between the structural column 1
It states and is provided with drop-down component 3 at the column root of structural column 1, the drop-down component 3 is before casting concrete in girder with rolled steel section en cased in concrete 2
Fashioned iron apply prestressing force.
The structural column 1 is the vertical applied force component for supporting girder with rolled steel section en cased in concrete 2.
The girder with rolled steel section en cased in concrete 2 is the lateral stressed component for being used to support superstructure or roof slab, the steel reinforced concrete
Beam 2 includes concrete, fashioned iron, longitudinal reinforcement and stirrup.
The lower end of the drop-down component 3 is fixed at the column root of structural column 1, and the other end acts on girder with rolled steel section en cased in concrete 2
Fashioned iron in, the drop-down component 3 be can apply one of cable wire, steel tendon, high-strength steel bar of pretension.
The drop-down component 3 is that single layer is arranged or cross-layer is arranged.
The drop-down component 3 is to be symmetrical set or asymmetric setting, the drop-down component 3 of the left and right sides meet at a little or
It is space crossed.
The column footing component 4 is foundation beam, raft foundation, the lower layer knot that can balance drop-down 3 horizontal component of component
One of structure beam slab.
The drop-down component 3 can be rigidity or flexibility, it is desirable to be able to bear design pretension.
The drop-down component 3 can be single, more arrangements, symmetrically or non-symmetrically, and the friendship on girder with rolled steel section en cased in concrete 2
Point can not be on one point.It, can cross-layer setting in the case that intermediate floor punches.
The column footing component 4 can bear to apply influence of the prestressing force to it, balance prestressed horizontal component.
A kind of cast anchor applies the construction method of prestressed girder with rolled steel section en cased in concrete, comprising the following steps:
Firstly, the fashioned iron in construction column footing component 4, structural column 1 and girder with rolled steel section en cased in concrete 2；
Secondly, after the completion of fashioned iron construction, and before casting concrete, connection drop-down component 4, by applying to drop-down component 4
Pretension makes the fashioned iron in girder with rolled steel section en cased in concrete 2 generate downward power；
Again, the concrete for pouring girder with rolled steel section en cased in concrete 2, after concrete reaches intensity, remove drop-down component 4 pretension,
Remove drop-down component 4；
Finally, construction complete 2 Shaped Steel of girder with rolled steel section en cased in concrete upward power is generated to armored concrete part, thus reduce or
Offset the internal force and crack that armored concrete part generates under downward load action.
The drop-down component 4 is that single layer is arranged or cross-layer setting will be worn among it when drop-down component 4 is that cross-layer is arranged
Reserved opening in the floor crossed.
The present invention can answer in advance girder with rolled steel section en cased in concrete application under the premise of not increasing additional counter prestressed component
Power, can less material utilization amount, reduce girder with rolled steel section en cased in concrete in armored concrete part bear load, fashioned iron coagulation is effectively reduced
The crack quantity and fracture width of Tu Liang, at the same increase in girder with rolled steel section en cased in concrete with respect to by middle part fashioned iron stock utilization,
The girder with rolled steel section en cased in concrete of the same stress in same section can have the dosage for reducing material using this technology.
Claims (9)
1. one kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, including column footing component (4), it is characterised in that: the column
It is provided with multiple structural columns (1) on lower basic component (4), the fashioned iron that single-layer or multi-layer is provided between the structural column (1) is mixed
It coagulates Tu Liang (2), drop-down component (3) is provided at the column root of the structural column (1), the drop-down component (3) is in casting concrete
The preceding fashioned iron in girder with rolled steel section en cased in concrete (2) applies prestressing force.
2. one kind according to claim 1, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the structure
Column (1) is the vertical applied force component for supporting girder with rolled steel section en cased in concrete (2).
3. one kind according to claim 1, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the fashioned iron
Beams of concrete (2) is the lateral stressed component for being used to support superstructure or roof slab, and the girder with rolled steel section en cased in concrete (2) includes coagulation
Soil, fashioned iron, longitudinal reinforcement and stirrup.
4. one kind according to claim 3, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the drop-down
The lower end of component (3) is fixed at the column root of structural column (1), and the other end acts in the fashioned iron of girder with rolled steel section en cased in concrete (2), institute
Stating drop-down component (3) is that can apply one of cable wire, steel tendon, high-strength steel bar of pretension.
5. according to right want 4 described in one kind cast anchor and apply prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the drop-down structure
Part (3) is that single layer is arranged or cross-layer is arranged.
6. one kind according to claim 4, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the drop-down
Component (3) is to be symmetrical set or asymmetric setting.
7. one kind according to claim 4, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete, it is characterised in that: under the column
Basic component (4) is one in the foundation beam, raft foundation, understructure beam slab for can balance drop-down component (3) horizontal component
Kind.
8. a kind of cast anchor applies the construction method of prestressed girder with rolled steel section en cased in concrete, it is characterised in that: the following steps are included:
Firstly, the fashioned iron in construction column footing component (4), structural column (1) and girder with rolled steel section en cased in concrete (2)；
Secondly, after the completion of fashioned iron construction, and before casting concrete, connection drop-down component (4), by drop-down component (4)
Apply pretension, the fashioned iron in girder with rolled steel section en cased in concrete (2) is made to generate downward power；
Again, the concrete for pouring girder with rolled steel section en cased in concrete (2) removes the prestretching of drop-down component (4) after concrete reaches intensity
Power removes drop-down component (4)；
Finally, girder with rolled steel section en cased in concrete (2) Shaped Steel that construction is completed generates upward power to armored concrete part, to reduce
Or offset internal force and crack that armored concrete part generates under downward load action.
9. a kind of cast anchor according to claim 8 applies the construction method of prestressed girder with rolled steel section en cased in concrete, feature exists
In: the drop-down component (4) is that single layer is arranged or cross-layer setting is when drop-down component (4) is that cross-layer is arranged will pass through among it
Floor in reserved opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209426.2A CN109184077B (en) | 2018-10-17 | 2018-10-17 | Steel reinforced concrete beam with prestressed lower anchor and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209426.2A CN109184077B (en) | 2018-10-17 | 2018-10-17 | Steel reinforced concrete beam with prestressed lower anchor and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184077A true CN109184077A (en) | 2019-01-11 |
| CN109184077B CN109184077B (en) | 2023-05-09 |
Family
ID=64945105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811209426.2A Active CN109184077B (en) | 2018-10-17 | 2018-10-17 | Steel reinforced concrete beam with prestressed lower anchor and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184077B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147589A (en) * | 1995-10-10 | 1997-04-16 | 陈彦平 | Prestressed reinforced concrete structure and its construction method |
| CN1414195A (en) * | 2002-09-28 | 2003-04-30 | 卓静 | Prestressed fibre reinforced steel concrete structure and its prestressed construction method |
| CN1528991A (en) * | 2003-09-30 | 2004-09-15 | 易志坚 | Mixed-tensioning process made pre-tensioning mansard prestressed concrete member and construction method thereof |
| CN1730858A (en) * | 2005-08-02 | 2006-02-08 | 上海市政工程设计研究院 | Preflex prestressed concrete channel beam and its making method |
| CN201284532Y (en) * | 2008-10-07 | 2009-08-05 | 晟元集团有限公司 | Cantilever type beam string canopy structure |
| CN101963002A (en) * | 2010-09-17 | 2011-02-02 | 浙江大学 | Masonry structure and method for enhancing collapse resistance and integrity under strong earthquake |
| CN102296751A (en) * | 2011-06-01 | 2011-12-28 | 马人乐 | Prestressing anti-fatigue girder |
| KR20130020494A (en) * | 2011-08-19 | 2013-02-27 | 삼표건설 주식회사 | Manufacturing method for pre-flex girder using prestressing |
| CN204000562U (en) * | 2014-06-28 | 2014-12-10 | 福州大学 | The compound rigid frame bridge of a kind of vertical prestressing steel-concrete |
| CN104314182A (en) * | 2014-11-03 | 2015-01-28 | 铁道第三勘察设计院集团有限公司 | Torsional cross beam column structure with thrust knuckle bearing node |
| CN205206116U (en) * | 2015-04-21 | 2016-05-04 | 张跃 | Prestressing force floor |
| CN107460972A (en) * | 2017-09-15 | 2017-12-12 | 江苏省建筑科学研究院有限公司 | A kind of assembled steel support frame Strengthened Masonry Walls load bearing wall and reinforced construction method |
| CN206859478U (en) * | 2017-02-21 | 2018-01-09 | 中国铁路设计集团有限公司 | A kind of overlapping reinforced concrete slab structure for bearing heavy duty |
| CN107858930A (en) * | 2017-11-21 | 2018-03-30 | 重庆建工市政交通工程有限责任公司 | The overlapping construction method of multilayer cast-in-situ box girder |
| CN108360690A (en) * | 2018-04-27 | 2018-08-03 | 中铁建工集团有限公司 | Bolumn cap is coupled reinforced contignation |
| CN108457195A (en) * | 2018-03-16 | 2018-08-28 | 广州市市政工程设计研究总院 | A kind of mixed composite beam bridge pre-bending construction method of steel- |
| CN209538521U (en) * | 2018-10-17 | 2019-10-25 | 中国铁路设计集团有限公司 | One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete |
-
2018
- 2018-10-17 CN CN201811209426.2A patent/CN109184077B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147589A (en) * | 1995-10-10 | 1997-04-16 | 陈彦平 | Prestressed reinforced concrete structure and its construction method |
| CN1414195A (en) * | 2002-09-28 | 2003-04-30 | 卓静 | Prestressed fibre reinforced steel concrete structure and its prestressed construction method |
| CN1528991A (en) * | 2003-09-30 | 2004-09-15 | 易志坚 | Mixed-tensioning process made pre-tensioning mansard prestressed concrete member and construction method thereof |
| CN1730858A (en) * | 2005-08-02 | 2006-02-08 | 上海市政工程设计研究院 | Preflex prestressed concrete channel beam and its making method |
| CN201284532Y (en) * | 2008-10-07 | 2009-08-05 | 晟元集团有限公司 | Cantilever type beam string canopy structure |
| CN101963002A (en) * | 2010-09-17 | 2011-02-02 | 浙江大学 | Masonry structure and method for enhancing collapse resistance and integrity under strong earthquake |
| CN102296751A (en) * | 2011-06-01 | 2011-12-28 | 马人乐 | Prestressing anti-fatigue girder |
| KR20130020494A (en) * | 2011-08-19 | 2013-02-27 | 삼표건설 주식회사 | Manufacturing method for pre-flex girder using prestressing |
| CN204000562U (en) * | 2014-06-28 | 2014-12-10 | 福州大学 | The compound rigid frame bridge of a kind of vertical prestressing steel-concrete |
| CN104314182A (en) * | 2014-11-03 | 2015-01-28 | 铁道第三勘察设计院集团有限公司 | Torsional cross beam column structure with thrust knuckle bearing node |
| CN205206116U (en) * | 2015-04-21 | 2016-05-04 | 张跃 | Prestressing force floor |
| CN206859478U (en) * | 2017-02-21 | 2018-01-09 | 中国铁路设计集团有限公司 | A kind of overlapping reinforced concrete slab structure for bearing heavy duty |
| CN107460972A (en) * | 2017-09-15 | 2017-12-12 | 江苏省建筑科学研究院有限公司 | A kind of assembled steel support frame Strengthened Masonry Walls load bearing wall and reinforced construction method |
| CN107858930A (en) * | 2017-11-21 | 2018-03-30 | 重庆建工市政交通工程有限责任公司 | The overlapping construction method of multilayer cast-in-situ box girder |
| CN108457195A (en) * | 2018-03-16 | 2018-08-28 | 广州市市政工程设计研究总院 | A kind of mixed composite beam bridge pre-bending construction method of steel- |
| CN108360690A (en) * | 2018-04-27 | 2018-08-03 | 中铁建工集团有限公司 | Bolumn cap is coupled reinforced contignation |
| CN209538521U (en) * | 2018-10-17 | 2019-10-25 | 中国铁路设计集团有限公司 | One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete |
Non-Patent Citations (2)
| Title |
|---|
| 信岩: "预弯组合梁简介" * |
| 袁晓冬;董红;: "浅谈预弯预应力梁的结构分析与应用" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109184077B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105887702B (en) | A kind of method of pre-stressed carbon fiber plate and steel concrete reinforced concrete beam | |
| CN202047377U (en) | Reinforcing structure of concrete box girder | |
| CN203007856U (en) | External prestressing reinforcement system for hollow slab girder bridge | |
| CN103046645B (en) | A kind of whole casting structure and construction method of Large-span Precast | |
| CN104947831A (en) | Prefabricated assembly type profile steel concrete shear wall and construction method thereof | |
| CN105821750B (en) | A kind of precast prestressed T plate and its application method | |
| CN205024882U (en) | Prefabricated assembled shaped steel concrete shear force wall | |
| CN102966050B (en) | Longitudinal connection method for steel-concrete combined beam and existing reinforced concrete T beam | |
| CN104652242B (en) | Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method | |
| CN107246085A (en) | Built-in soap-free emulsion polymeization steel plate concealed bracings prestressing force automatic reset concrete shear wall | |
| CN108374326A (en) | A kind of combined rigid structure steel plate girder bridge pier consolidation construction | |
| CN103422434A (en) | Corrugated sheet steel composite structure bridge deck system | |
| CN106948481B (en) | Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part | |
| CN108678225A (en) | The built-in steel plate combined shear wall of built-in presstressed reinforcing steel steel pipe concrete frame and the practice | |
| CN106499211B (en) | Newly-increased outrigger frame Baogang anchor daraf(reciprocal of farad) structure | |
| CN103711329A (en) | Method for reinforcing structure by means of method of externally attaching steel-reinforced concrete framework | |
| CN102561212A (en) | Method for strengthening vertical crack of single-pillar concrete pier | |
| CN108775084A (en) | Steel-concrete combines precast beam and prefabricated post connection structure and construction method | |
| CN106958319A (en) | Precast concrete post component and connected node | |
| CN105781142A (en) | Reinforcement structure and reinforcement method for column removal of top layer of building structure | |
| CN205531016U (en) | Precast concrete post component and connected node | |
| CN209538521U (en) | One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete | |
| CN207812307U (en) | The construction system of Cable stayed Bridge Main Tower and steel anchor beam | |
| CN109184077A (en) | One kind, which is casted anchor, applies prestressed girder with rolled steel section en cased in concrete and its construction method | |
| CN103216085B (en) | A kind of removable lining self-bearing type reinforcement bar truss mould plate |
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 |