CN1290798A - Hole drilling technology for cohesionless prestressed concrete roof board - Google Patents
Hole drilling technology for cohesionless prestressed concrete roof board Download PDFInfo
- Publication number
- CN1290798A CN1290798A CN 00129321 CN00129321A CN1290798A CN 1290798 A CN1290798 A CN 1290798A CN 00129321 CN00129321 CN 00129321 CN 00129321 A CN00129321 A CN 00129321A CN 1290798 A CN1290798 A CN 1290798A
- Authority
- CN
- China
- Prior art keywords
- hole
- presstressed reinforcing
- concrete
- reinforcing steel
- steel
- 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
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
The hole drilling includes the process of digging concrete floor board in the designed position to expose prestressed ribs to be cut, fixing the steel frame in required size in the hole, anchoring post-fitted anchor tackle to the prestressed ribs by usign a special extruder, fixing the anchor tackle onto the steel frame by using baffle plate with U-groove, depositing the hole edge and steel frame into integral steel-concrete frame and final cutting the prestressed ribs after tha concrete reaches its designed strength.
Description
The present invention relates to a kind of hole drilling technology for cohesionless prestressed concrete roof board field.
Punch at the unbonded prestressed concrete superstructure that has built up, traditional job practices is divided into three phases: the first step is treated the transformation superstructure earlier and is supported temporarily, simultaneously local stiffening is carried out at the position that punches.Chisel concrete floor system for second one, at the hole lateral dominance with work anchor with the prestressed reinforcement anchoring, cut off reinforcing bar then, put the tension prestress reinforcing bar.Reinforce the hole for the 3rd one, prestressed reinforcement of tensioning is removed the superstructure support system again.The major defect of this its existence of job practices is: the job practices complex procedures, corresponding engineering expense height is especially opened and stretch-draw once more putting of prestressed reinforcement, has not only prolonged the engineering time, increased engineering cost, and also will produce harmful effect for the stress performance of concrete floor system.
The objective of the invention is to invent a kind of hole drilling technology for cohesionless prestressed concrete roof board, it blocks the prestressed reinforcement operation behind anchoring prestressed reinforcement and the reinforcing hole and forms by punching, and makes job practices simple, and engineering cost reduces, and has shortened the engineering time.
The present invention is achieved in that at the design position and chisels concrete floor, and presstressed reinforcing steel to be blocked is come out, and the structural steel frame of making according to dimension of opening in advance is fixed on the place, hole; Adopt dedicated extruded facility that rear installed intermediate plate ground tackle is anchored on the presstressed reinforcing steel to be blocked; The band U-lag plate washer the rear installed intermediate plate ground tackle on the presstressed reinforcing steel is fixed on the structural steel frame, then the edge, hole is become the steel reinforced concrete frame with the structural steel frame integral cast, treat that concrete reaches design strength after, cut off presstressed reinforcing steel and finish the engineering that punches.
Advantage of the present invention is: job practices is simple, saves the duration 50%, saves construction costs 60% and since in work progress strong transfer all under the state of no relative displacement, finish, during as the installation ground tackle, do not have relative displacement between ground tackle and the presstressed reinforcing steel; When ground tackle is connected with structural steel frame, there is not relative displacement between the two yet; After cutting off presstressed reinforcing steel, presstressed reinforcing steel pulling force calmness is transferred to structural steel frame, and therefore, in whole superstructure punched transformation process, presstressed reinforcing steel and concrete stress state did not all change.
Below in conjunction with embodiment, the present invention will be further described:
Chisel concrete floor at the design position, presstressed reinforcing steel to be blocked is come out, the structural steel frame of making according to dimension of opening in advance is fixed on the place, hole; Adopt dedicated extruded facility that rear installed intermediate plate ground tackle is anchored on the presstressed reinforcing steel to be blocked; The band U-lag plate washer the rear installed intermediate plate ground tackle on the presstressed reinforcing steel is fixed on the structural steel frame, then the edge, hole is become the steel reinforced concrete frame with the structural steel frame integral cast, treat that concrete reaches design strength after, cut off presstressed reinforcing steel and finish the engineering that punches.
Claims (1)
1 one kinds of hole drilling technology for cohesionless prestressed concrete roof board is characterized in that: chisel concrete floor at the design position, presstressed reinforcing steel to be blocked is come out, the structural steel frame of making according to dimension of opening in advance is fixed on the place, hole; Adopt dedicated extruded facility that rear installed intermediate plate ground tackle is anchored on the presstressed reinforcing steel to be blocked; The band U-lag plate washer the rear installed intermediate plate ground tackle on the presstressed reinforcing steel is fixed on the structural steel frame, then the edge, hole is become the steel reinforced concrete frame with the structural steel frame integral cast, treat that concrete reaches design strength after, cut off presstressed reinforcing steel and finish the engineering that punches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129321 CN1121542C (en) | 2000-11-17 | 2000-11-17 | Hole drilling technology for cohesionless prestressed concrete roof board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129321 CN1121542C (en) | 2000-11-17 | 2000-11-17 | Hole drilling technology for cohesionless prestressed concrete roof board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1290798A true CN1290798A (en) | 2001-04-11 |
| CN1121542C CN1121542C (en) | 2003-09-17 |
Family
ID=4593401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00129321 Expired - Fee Related CN1121542C (en) | 2000-11-17 | 2000-11-17 | Hole drilling technology for cohesionless prestressed concrete roof board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1121542C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205765B (en) * | 2006-12-20 | 2010-12-08 | 上海市第一建筑有限公司 | Construction method for door opening of old structural underground wall |
| CN103147592A (en) * | 2013-03-25 | 2013-06-12 | 湖南省建筑工程集团总公司 | Re-anchoring and cut-off construction method of unbonded prestressed reinforcement during partial dismantling of existing building |
| CN103628698A (en) * | 2013-12-09 | 2014-03-12 | 中国建筑一局(集团)有限公司 | Construction method for holing pre-stressed floor slab in structural strengthening engineering |
| CN108425506A (en) * | 2018-03-19 | 2018-08-21 | 中冶建筑研究总院有限公司 | To the method that punches of existing prestressed structure plate |
| CN109441138A (en) * | 2018-12-20 | 2019-03-08 | 中冶建筑研究总院有限公司 | To the method that punches of existing prestressed structure plate |
| CN110778139A (en) * | 2019-10-21 | 2020-02-11 | 上海市政工程设计研究总院（集团）有限公司 | Local hole-opening construction method for unbonded prestressed tendon concrete slab |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307650B (en) * | 2004-06-09 | 2010-09-01 | 邱则有 | Open formwork element for concrete filling |
-
2000
- 2000-11-17 CN CN 00129321 patent/CN1121542C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205765B (en) * | 2006-12-20 | 2010-12-08 | 上海市第一建筑有限公司 | Construction method for door opening of old structural underground wall |
| CN103147592A (en) * | 2013-03-25 | 2013-06-12 | 湖南省建筑工程集团总公司 | Re-anchoring and cut-off construction method of unbonded prestressed reinforcement during partial dismantling of existing building |
| CN103147592B (en) * | 2013-03-25 | 2014-02-19 | 湖南省建筑工程集团总公司 | Re-anchoring and cut-off construction method of unbonded prestressed reinforcement during partial dismantling of existing building |
| CN103628698A (en) * | 2013-12-09 | 2014-03-12 | 中国建筑一局(集团)有限公司 | Construction method for holing pre-stressed floor slab in structural strengthening engineering |
| CN103628698B (en) * | 2013-12-09 | 2015-11-25 | 中国建筑一局(集团)有限公司 | The construction method that in structural fortification, pre-stress floor punches |
| CN108425506A (en) * | 2018-03-19 | 2018-08-21 | 中冶建筑研究总院有限公司 | To the method that punches of existing prestressed structure plate |
| CN109441138A (en) * | 2018-12-20 | 2019-03-08 | 中冶建筑研究总院有限公司 | To the method that punches of existing prestressed structure plate |
| CN110778139A (en) * | 2019-10-21 | 2020-02-11 | 上海市政工程设计研究总院（集团）有限公司 | Local hole-opening construction method for unbonded prestressed tendon concrete slab |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1121542C (en) | 2003-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103615053B (en) | Monolithic reinforced concrete structure post empiricism engineering method | |
| CN106088148B (en) | Pipe gallery template and its application | |
| CN1121542C (en) | Hole drilling technology for cohesionless prestressed concrete roof board | |
| CN203200745U (en) | Strengthening support of underground diaphragm wall in inverse construction method | |
| CN101550723A (en) | Construction method for codes of reserved structural column longitudinal steel bars | |
| CN208996442U (en) | A kind of working early-dismantling formwork system of cast-in-place concrete structure | |
| CN203347233U (en) | Tapered tie bolt for large steel formworks | |
| CN1200170C (en) | Construction method for longitudinally assembling prefabricated subsection of channel beam | |
| CN210013073U (en) | Assembled elevated expressway for loading and unloading ramps | |
| CN109057322A (en) | A kind of cast-in-place concrete early-dismantling formwork system and its construction method | |
| CN214828502U (en) | Prefabricated steel reinforcement cage hoist and mount construction equipment of culvert | |
| CN105755943B (en) | A kind of Arch Bridge Ribs block section and its construction method | |
| CN201507115U (en) | Stereotyped steel moulding plate with reinforcing steel bar reserve channels | |
| CN111677000B (en) | Method for simultaneously removing multiple connection parts of side wall of new and old subway station | |
| CN201526157U (en) | Concrete floor shaping lateral formwork | |
| CN200955154Y (en) | Tower-type crane '+' shaped steel structure base | |
| CN215948630U (en) | Embedded part reinforcing structure for high-truss laminated slab system | |
| JP3889497B2 (en) | Molding method for concrete basement | |
| KR20080005134U (en) | Precast panel for construction of retaining wall | |
| CN214117604U (en) | Embedded interface treating agent spraying device for building reinforcement operation | |
| CN1117202C (en) | Shutterings for prefabricating reinforced concretes of beams and columns for building frame and their installation technique | |
| CN1485502A (en) | Construction method of hanging module and cast-in-situ for ballast slab of channel beam | |
| KR19990033150U (en) | Guide Pipe for Rod Vibrator | |
| CN216475156U (en) | Multifunctional bridge support expansion foundation module | |
| CN217759545U (en) | Reinforced structure of precast concrete board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |