CN2591121Y - One structure of prestress steel reinforced concrete ultralong structure - Google Patents
One structure of prestress steel reinforced concrete ultralong structure Download PDFInfo
- Publication number
- CN2591121Y CN2591121Y CN 02288790 CN02288790U CN2591121Y CN 2591121 Y CN2591121 Y CN 2591121Y CN 02288790 CN02288790 CN 02288790 CN 02288790 U CN02288790 U CN 02288790U CN 2591121 Y CN2591121 Y CN 2591121Y
- Authority
- CN
- China
- Prior art keywords
- prestressing
- concrete
- ater
- casting
- reinforced concrete
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a structure of a prestressing reinforced concrete ultralong structure, which is composed of a prestressing tendon in a prestressing overlapping tendon main body plate, a concrete main body plate and a post-pouring belt. The utility model solves the problems that the structure is ultralong and applies pressure stress to floor plates through reasonably arranging the post-pouring belt by matching the prestressing tendon in the main body plate and the prestressing overlapping tendon in the post-pouring belt, pouring post-pouring belt concrete and the tension of the overlapping tendon, etc.
Description
The utility model belongs to the building floor technical field.
According to existing " Code for design of concrete structures " (GB50010-2002), because the influence of thermal stresses, reinforced concrete structure shrinkage joint maximum spacing is: cast-in-place frame construction indoor or native in for 55m, be 35m in the open; The corresponding situation of cast-in-place shear wall structure is got 45m, 30m respectively, and after standard also allowed " adopting special prestressing measure " simultaneously, the shrinkage joint can exceed the limit value of afore mentioned rules.Nowadays build towards the increasing development of planar dimension, by the requirement of standard the shrinkage joint being set brings a lot of inconvenience for the construction and the use of building, therefore, the distance that as far as possible increases shrinkage joint and shrinkage joint of how employing new technology even cancellation shrinkage joint, engineering design and construction is all had positive meaning.
The purpose of this utility model provides a kind of a kind of structure of prestressed reinforced concrete super-long structural.This structural form can reduce the influence of thermal stresses to structure self, reaches the structure overlength and eliminates the purpose at shrinkage joint.Enforcement of the present utility model all plays a driving role to the raising of design and construction level, has excellent economy and applicability.
The utility model is realized in such a way.In building prestressed reinforced concrete overlength floor process, the ater-casting is set rationally.The interval of ater-casting is a 40-60 rice.The overlength floor must be provided with an ater-casting along its length if several center of rigidity (shear wall concentrated area) are arranged between then every adjacent two center of rigidity at least, and ater-casting two back gauges five equilibrium roughly; Presstressed reinforcing steel is joined at the main board position.Join unbonded prestressing tendon in the main board on both sides, ater-casting.After concrete strength reached 100% in the main board, stretch-draw presstressed reinforcing steel wherein made concrete shrink, the creep compressive stress loss that causes itself as far as possible little.The pre-buried prestressing force overlap joint muscle that passes through the ater-casting in the main board of two ends, ater-casting.Overlap joint muscle short more good more (burying the long 4-7 rice that is) after satisfying basic prestressing force delivery request length.The purpose of overlap joint muscle is that concrete applies compressive stress in the ater-casting in order to give, but it is to cut down the compressive pre-stress that added in the main board of both sides as cost (reduction value is substantially equal to the overlap joint muscle and buries length/both sides main board presstressed reinforcing steel length overall).The overlap joint muscle is short more, and that compressive stress is cut down is few more.Build with expansive concrete the ater-casting, reaches the intensity post tensioning prestressing force overlap joint muscle that allows stretch-draw when concrete.The overlap joint muscle adopts the mode of oblique ejecting plate face stretch-draw.Because the overlap joint muscle is very short, the influence of ground tackle retraction counter stress loss is very big.In order to reduce stress loss as far as possible, must use the jack tension overlap joint muscle of band hydraulic pressure jack unit, the damage control of ground tackle retraction is in 2mm.
Below in conjunction with accompanying drawing the utility model is described further.Fig. 1 is the utility model partial plan layout.Fig. 2 is Fig. 1 position sectional drawing.With reference to accompanying drawing, the utility model overlaps presstressed reinforcing steel (2) in muscle (1), the main board, concrete main body plate (3), ater-casting (4) by prestressing force and forms.Presstressed reinforcing steel (2) is a unbonded prestressing tendon in prestressing force overlap joint muscle (1) and the main board.Prestressing force overlap joint muscle (1) is short as far as possible, is provided with in the mode of oblique ejecting plate face stretch-draw.Build with expansive concrete ater-casting (4), is preferably in when ground temperature is colder and builds, and can ensure the quality of products better like this.
Enforcement of the present utility model all plays a driving role to the raising of design and construction level, has excellent economy and applicability.
Claims (2)
1, a kind of a kind of structure of prestressed reinforced concrete super-long structural, form by presstressed reinforcing steel (2) in prestressing force overlap joint muscle (1), the main board, concrete main body plate (3) and ater-casting (4), it is characterized in that presstressed reinforcing steel (2) is a unbonded prestressing tendon in prestressing force overlap joint muscle (1) and the main board, prestressing force overlap joint muscle (1) length range is a 4-7 rice, and be provided with in the mode of oblique ejecting plate face stretch-draw, the ater-casting is an expansive concrete.
2, a kind of structure of prestressed reinforced concrete super-long structural according to claim 1, the interval that it is characterized in that ater-casting (4) are 40-60 rice or between adjacent two center of rigidity and two back gauges five equilibrium roughly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288790 CN2591121Y (en) | 2002-12-09 | 2002-12-09 | One structure of prestress steel reinforced concrete ultralong structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288790 CN2591121Y (en) | 2002-12-09 | 2002-12-09 | One structure of prestress steel reinforced concrete ultralong structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591121Y true CN2591121Y (en) | 2003-12-10 |
Family
ID=33748551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288790 Expired - Lifetime CN2591121Y (en) | 2002-12-09 | 2002-12-09 | One structure of prestress steel reinforced concrete ultralong structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591121Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988217A (en) * | 2017-04-07 | 2017-07-28 | 中交第二公路勘察设计研究院有限公司 | Super-length prestressed steel beam, which interlocks, anchors arrangement and construction method |
| CN107299711A (en) * | 2017-08-08 | 2017-10-27 | 浙江华展工程研究设计院有限公司 | The late poured band structure of prestressed concrete panel |
| CN107762156A (en) * | 2016-08-18 | 2018-03-06 | 上海宝冶建设工业炉工程技术有限公司 | Prestressing force plate face angle-changing extension method |
| CN109024875A (en) * | 2018-07-24 | 2018-12-18 | 山东建筑大学 | A kind of assembled integral concrete component and construction method |
| CN109296116A (en) * | 2018-09-10 | 2019-02-01 | 重庆大学 | Centralized transverse prestress binding masonry and its method for applying prestressing force built in one kind |
-
2002
- 2002-12-09 CN CN 02288790 patent/CN2591121Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762156A (en) * | 2016-08-18 | 2018-03-06 | 上海宝冶建设工业炉工程技术有限公司 | Prestressing force plate face angle-changing extension method |
| CN106988217A (en) * | 2017-04-07 | 2017-07-28 | 中交第二公路勘察设计研究院有限公司 | Super-length prestressed steel beam, which interlocks, anchors arrangement and construction method |
| CN106988217B (en) * | 2017-04-07 | 2020-03-13 | 中交第二公路勘察设计研究院有限公司 | Staggered anchoring arrangement mode and construction method for ultra-long prestressed steel bundles |
| CN107299711A (en) * | 2017-08-08 | 2017-10-27 | 浙江华展工程研究设计院有限公司 | The late poured band structure of prestressed concrete panel |
| CN109024875A (en) * | 2018-07-24 | 2018-12-18 | 山东建筑大学 | A kind of assembled integral concrete component and construction method |
| CN109296116A (en) * | 2018-09-10 | 2019-02-01 | 重庆大学 | Centralized transverse prestress binding masonry and its method for applying prestressing force built in one kind |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2004520511A (en) | Prestressed synthetic truss girder and method of manufacturing the same | |
| CN101672070B (en) | Slowly-bonded prestressed prefabricated integral frame joint system | |
| CN209323367U (en) | Steel reinforced concrete composite beam bridge panel assembly seam construction based on early strong high performance concrete | |
| CN109898714A (en) | The close spelling connection structure of fibre sheet material concrete bidirectional laminated slab and implementation method | |
| CN2477701Y (en) | Connecting structure of bridge having simple support varied as continuation | |
| Russell | Impact of high strength concrete on the design and construction of pretensioned girder bridges | |
| CN2591121Y (en) | One structure of prestress steel reinforced concrete ultralong structure | |
| KR20040006564A (en) | Composite Deck having Frame and Concrete | |
| CN209353550U (en) | A kind of sandwich loss of weight superimposed sheet | |
| CN106012806B (en) | Cored slab hinge seam Shear connection construction and construction technology | |
| CN111118997A (en) | Prefabricated assembled type lane plate | |
| CN203096949U (en) | Pre-tensioning method prestressing force superposed beam structural system | |
| JP3610828B2 (en) | High-strength lightweight composite girder bridge and its construction method | |
| CN105155690A (en) | Connection node of precast slabs and construction method for spliced precast slabs | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN202450676U (en) | Composite slabs connected by using steel reinforcing bar 180-degree bending anchors and spiral bars in one span | |
| CN215406581U (en) | Buckle type connecting structure, prefabricated plate body structure adopting same and prefabricated plate-beam integrated structure | |
| CN108691381A (en) | A kind of novel architecture laminated floor slab | |
| CN2749966Y (en) | Overlong concrete building structure equipped with connector and prestressed tendon | |
| CN212865473U (en) | Prefabricated assembled type lane plate | |
| KR100966541B1 (en) | Continuous Construction of Prestressed Steel Bridge with Double Wed filled Concrete | |
| KR101342894B1 (en) | Trust type prestressed concrete girder, manufacturing method for the same and constructing method of continuation bridge using the same | |
| KR100777566B1 (en) | Reinforcing of tsc beam with wire tension method | |
| CN201581496U (en) | Retard-bonded prestressed assembling integral frame node system | |
| CN202248303U (en) | Steel-concrete combined assembly integrated girder slab column node structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121209 Granted publication date: 20031210 |
|
| DD01 | Delivery of document by public notice |
Addressee: Xu Yan Document name: Notification of Expiration of Patent Right Duration |