CN203904835U - Integrated external prestressing tendon steering saddle - Google Patents
Integrated external prestressing tendon steering saddle Download PDFInfo
- Publication number
- CN203904835U CN203904835U CN201420213712.7U CN201420213712U CN203904835U CN 203904835 U CN203904835 U CN 203904835U CN 201420213712 U CN201420213712 U CN 201420213712U CN 203904835 U CN203904835 U CN 203904835U
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- base plate
- turns
- plate
- external pre
- saddle
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims abstract description 6
- 238000000338 in vitro Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 239000011513 prestressed concrete Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Reinforcement Elements For Buildings (AREA)
Abstract
An integrated external prestressing tendon steering saddle, which comprises a clamped beam, a pair of clamp plates anchored with the clamped beam, a base plate horizontally arranged at the bottom of the beam and a steering curved plate arranged below the base plate; one end of the steering curved plate connected with the bottom surface of the base plate in a welding manner, and the other end of the steering curved plate is a free end; a support web plate is arranged between the steering curved plate and the bottom surface; an external prestressing tendon is tightly attached to the bottom surface of the steering curved plate so as to realize steering, the edge of the external prestressing tendon is parallel and level to or slightly shorter than the corresponding edge of the base plate, the steering bending angle is 10 to 15 degrees; the clamp plate is perpendicularly welded on the base plate; limit plates are arranged on the two sides of the base plate. According to the steering saddle, all plates are welded and connected into a whole; inlet and outlet of the external prestressing tendon in the two ends of the steering curved plate are processed with inverted curved angles to form a smooth transition, so that the external prestressing tendon is effectively prevented from being damaged as bends sharply, so that the concentrated load generated by the angular point is transferred to a concrete structure, which gives rise to a better realization of steering of the external prestressing tendon.
Description
Technical field
The utility model relates to the transfer field of external pre-stress bundle, and particularly a kind of external prestressing center sill saddle of integral type turns to saddle.
Background technology
In recent years, along with developing rapidly of China's prestressed concrete technology, aspect conventional prestressed reinforced concrete construction design and construction, accumulating higher technical know-how and abundant practical experience, and the application of the research on prestressed reinforced concrete construction is relatively less in vitro.Than conventional prestressed reinforced concrete construction, externally pre-stressed concrete structure has many good qualities, as little in prestressing force friction loss, prestressing force income is high, because external pre-stress bundle is arranged in web outside, reduced physical dimension and dead load, can in structure, in the operating period, detect, safeguard or change.The transfer of external pre-stress bundle is being undertaken the task that external pre-stress bundle turns to, it is one of most important Structural Tectonics in externally pre-stressed concrete structure, a kind of building structure external prestressing muscle occurring is in the recent period reinforced and is turned to saddle, adopt multiple Component composition to form, complex structure, connect insecurely, and need Assembling, waste time and energy; Adopt external power muscle stretch-draw L shape steel plate and turn to solid round steel to realize turning to of external pre-stress bundle, can not control flexibly steering angle, and the turning point bit architecture of external pre-stress bundle sharply very easily causes the damage of prestressing tendon, and knuckle point loading ratio is more concentrated, to component strength, require high.
Utility model content
The purpose of this utility model is to provide a kind of integral type external pre-stress bundle and turns to saddle, and the turning point bit architecture that turns to, can not control flexibly steering angle and external pre-stress bundle that solve to adopt external power muscle stretch-draw L shape steel plate and turn to solid round steel to realize external pre-stress bundle sharply very easily causes damage, the knuckle point point load of prestressing tendon effectively not to transmit and remove, exist stress hysteresis problem, cause component strength is required to a high-technology difficult problem; Also solve that the multiple Component composition of available technology adopting forms, complex structure, connection is insecure and the problem that needs Assembling, waste time and energy.
For realizing above-mentioned technical purpose, the technical scheme that the utility model is taked is:
A kind of integral type external pre-stress bundle turns to saddle, the external pre-stress bundle turning point of being located at beam body bottom, is characterized in that: comprise and be a pair ofly close to the curved slab that turns to below the base plate that arranges at the bottom of beam and base plate with clamping plate, the level of the two sides anchor connection of beam body respectively; Described clamping plate vertical welding is in the upper surface of base plate; The both sides vertical welding of described base plate is useful on the limiting plate of restriction external pre-stress bundle beat; Fit tightly with turning to the side of curved slab; The described curved slab that turns to is located between two limiting plates, is the rectangular slab of plate face bending, and the soffit of the entrance point of prestressing tendon limit and base plate is welded to connect in vitro, and a limit of the corresponding port of export is free end; Described turning to has between curved slab and base plate and base plate support webs isometric, that plate face and external pre-stress bundle be arranged in parallel, the top of described support webs is vertically welded on the bottom surface of base plate, bottom for the upper surface laminating that the turns to curved slab curved surface that spot welding is connected of going forward side by side; It is semifocal chord shape, and vertical height becomes greatly gradually from arrival end to the port of export of external pre-stress bundle, in the vertical height near the arrival end of external pre-stress bundle, is zero, at the port of export near external pre-stress bundle, reaches maximum; Described external pre-stress bundle is limited in and turns in the knuckle that curved slab and limiting plate cross and be close to the soffit that turns to curved slab.
As optimal technical scheme of the present utility model, the described four edges of curved slab and the corresponding edge of base plate of turning to keeps concordant on vertical, or is slightly shorter than the corresponding edges of base plate.
As further optimal technical scheme, described in turn to the steering angle that turns to angle of bend and external pre-stress bundle of curved slab to adapt, the scope that turns to angle of bend is 10～15 °.
As further optimal technical scheme, described in turn to the two ends external pre-stress bundle import and export of curved slab to carry out chamfered to form rounding off, can adopt Portable chamfering machine to turning to curved slab two ends rounding to process, chamfer radius is controlled at 5 ~ 10mm.
As further optimal technical scheme, the outside of described clamping plate is provided with 1～3 stiffening rib, and described stiffening rib is simultaneously perpendicular to base plate and clamping plate setting, and is welded to connect with the upper surface of base plate and the lateral surface of clamping plate respectively.
As further optimal technical scheme, the thickness of slab of described stiffening rib is 30mm, and the thickness of slab of all the other plates is got 10 ~ 15mm.
As further optimal technical scheme, described support webs has 1～3, and symmetrical, parallel is distributed in base plate and turns between curved slab, and plate face is parallel with external pre-stress bundle.
Compared with prior art, the utlity model has following characteristics and beneficial effect:
1, the finished product that is integrated welding turns to saddle, simple in structure, can batch production produce, and quality is guaranteed, flexible for installation, and constructing operation is convenient, meets construction safety requirement and the instructions for use of building headroom, construction condition is required low, and applicability is strong;
2, in the utility model, the point load that external pre-stress bundle produces at knuckle point is by turning to saddle to be passed to safely concrete structure, realized the turning function of external pre-stress bundle, transmitted better the horizontal and vertical power that prestressing tendon produces, prevent external pre-stress bundle in the region with turning to saddle to contact because extrusion friction causes damage, produce differential hardening or cause larger friction loss, compensated preferably and be removed the support force of post to beam body, can realize initiatively unloading, ubiquitous stress hysteresis problem while having overcome existing method reinforcing, guaranteed the cooperation of external pre-stress bundle and original structure.
The utility model provides technical support in the structural utilization of large-span concrete for external prestressing technology, reducing concrete structure amount of deflection and suppressing have reference significance aspect concrete cracking, can be widely used in externally pre-stressed concrete structure, as Prestressed Concrete Bridges engineering or Removing Columns strengthening and rebuilding engineering.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model;
Fig. 2 is the cross-sectional view of A-A section in Fig. 1;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the cross-sectional view of B-B section in Fig. 3;
Fig. 5 is the top view of Fig. 3.
Reference numeral: 1-base plate, 2-support webs, 3-clamping plate, 4-stiffening rib, 5-limiting plate, 6-turn to curved slab, 7-external pre-stress bundle, 8-connector, 9-beam body.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Fig. 1～5, a kind of integral type external pre-stress bundle turns to saddle, the external pre-stress bundle turning point of being located at beam body 9 bottoms, is characterized in that: comprise and be a pair ofly close to below the base plate 1 that arranges at the bottom of beam and base plate and turn to curved slab 6 for what realize that external pre-stress bundle 7 turns to clamping plate 3, the level of the 9 two sides anchor connections of beam body respectively, spacing between clamping plate 3 is got deck-siding according to actual conditions, described clamping plate 3 are fixedly connected with beam body 9 by connector 8, and after fill with epoxy structural rubber, described connector 8 is M24 crab-bolt, by chemically-planted steel bar, turn to saddle and beam body 9 fixing external prestressing saddle, and after fill with epoxy structural rubber, the described curved slab 6 that turns to is for the rectangular slab of plate face bending, its in vitro the soffit of limit in the updrift side of prestressing tendon 7 bearing of trends and base plate 1 be welded to connect, corresponding other end is free end, described turning to is provided with the support webs isometric with base plate 2 between curved slab and bottom surface, the top of described support webs 2 is vertically welded on the bottom surface of base plate, bottom for the upper surface laminating that turns to curved slab 6 curved surface that spot welding is connected of going forward side by side, it is semifocal chord shape, vertical height becomes large gradually from arrival end to the port of export of external pre-stress bundle 7, vertical height at the arrival end near external pre-stress bundle 7 is zero, at the port of export near external pre-stress bundle 7, reach maximum, in the utility model, the maximum height of support webs 2 is got 28mm, described support webs has 1～3, symmetrical, parallel is distributed in base plate and turns between curved slab, plate face is parallel with external pre-stress bundle, described external pre-stress bundle 7 is close to and is turned to the bottom surface turnover of curved slab 6 to turn to saddle to realize to turn to, described clamping plate 3 vertical weldings are in the upper surface of base plate 1, the both sides vertical welding of described base plate 1 is useful on the limiting plate 5 of restriction external pre-stress bundle 7 beats.The described edge of curved slab 6 that turns to is concordant with the corresponding edges of base plate 1, also can slightly be shorter than the corresponding edges of base plate 1.Described to turn to the angle of bend that turns to of curved slab 6 be 10～15 °, and described in the present embodiment, turning to the angle of bend that turns to of curved slab 6 is 13 °.Rounding processing formation rounding off is carried out in the described exit, two ends of curved slab 6 that turns to, and can adopt Portable chamfering machine to turning to curved slab two ends rounding to process, and chamfer radius is controlled at 5 ~ 10mm.The outside of described clamping plate 3 is provided with 1～3 stiffening rib 4, and described stiffening rib 4 arranges perpendicular to base plate 1 and clamping plate 3 simultaneously, and is welded to connect with the upper surface of base plate 1 and the lateral surface of clamping plate 3 respectively.The thickness of slab of described stiffening rib 4 is 30mm, the thickness of slab of all the other plates is got 10 ~ 15mm, and in the present embodiment, base plate 1 is of a size of (deck-siding+200mm) * 250mm, and clamping plate 3 are of a size of 100*250mm, stiffening rib 4 is of a size of 90*100mm, and limiting plate 5 is of a size of 140*250mm.The described curved slab 6 that turns to, described stiffening rib 4 thicknesss of slab are 30mm, all the other plate thicknesss of slab are 10mm.
In the construction application of the present embodiment, external pre-stress bundle adopts tri linear to arrange, two saddles turn to saddle to be arranged in Liang Tisi/mono-and Nodes, it is 8m that two saddles turn to the freedom length between saddle, meets < < unbonded prestressed concrete structure tecnical regulations > > and saddle is turned to the requirement of saddle.External pre-stress bundle, by turn to saddle place to form concentrated force upwards at saddle, has compensated and has been removed the support force of frame column to main beam in frame, has realized initiatively unloading, has overcome ubiquitous stress hysteresis problem while adopting other method to reinforce.First in factory, carry out the welding processing moulding that saddle turns to each plate of saddle, in manufacturing process, saddle turns to the radian of curved plate control that turns in saddle to want accurately, external pre-stress bundle can smoothly be turned to, avoid external pre-stress bundle to occur that sharply bending causes frictional resistance excessive loss, through bending controlling angle being discussed repeatedly at 13 °.Turn to exit, curved slab two ends to carry out chamfered and form rounding off, avoid external pre-stress bundle occur sharp-pointed turnover or sustain damage.According to on-site actual situations, at saddle, turn on the clamping plate of saddle and main beam in frame corresponding site and punch, implant M24 chemical anchor bolts, each 2 of every sides, bar planting can misplace when both sides chemical anchor bolts are fought.By chemical anchor bolts, at the bottom of saddle turns to saddle to be fixed on main beam in frame beam, after turning between saddle and main beam in frame, saddle fills with epoxy structural rubber, guarantee enough shearings resistance.After saddle turns to saddle install to complete, the anticorrosion and fireproof paint of surface spraying.Then carry out the laying of external pre-stress bundle, in the anchoring of main beam in frame two ends, at the bottom of main beam in frame beam, turn to saddle place to turn to the termination of external pre-stress bundle, finally carry out the stretch-draw of external pre-stress bundle, construct complete.
Claims (6)
1. an integral type external pre-stress bundle turns to saddle, the external pre-stress bundle turning point of being located at beam body (9) bottom, is characterized in that: comprise and be a pair ofly close to and turn to curved slab (6) below the base plate (1) that arranges at the bottom of beam and base plate with clamping plate (3), the level of beam body (9) two sides anchor connection respectively; Described clamping plate (3) vertical welding is in the upper surface of base plate (1); The both sides vertical welding of described base plate (1) is useful on the limiting plate (5) of restriction external pre-stress bundle (7) beat; Fit tightly with turning to the side of curved slab (6); The described curved slab (6) that turns to is located between two limiting plates (5), is the rectangular slab of plate face bending, and limit of the entrance point of prestressing tendon (7) and the soffit of base plate (1) are welded to connect in vitro, and a limit of the corresponding port of export is free end; Described turning to has between curved slab (6) and base plate (1) and base plate support webs (2) isometric, that plate face and external pre-stress bundle (7) be arranged in parallel, the top of described support webs (2) is vertically welded on the bottom surface of base plate, bottom for the upper surface laminating that turns to curved slab (6) curved surface that spot welding is connected of going forward side by side; Described external pre-stress bundle (7) is limited in and turns in the knuckle that curved slab (6) and limiting plate (5) cross and be close to the soffit that turns to curved slab (6).
2. integral type external pre-stress bundle according to claim 1 turns to saddle, it is characterized in that: described in turn to the four edges of curved slab (6) and the corresponding edge of base plate (1) to keep concordant on vertical.
3. integral type external pre-stress bundle according to claim 1 turns to saddle, it is characterized in that: described in turn to the steering angle that turns to angle of bend and external pre-stress bundle (7) of curved slab (6) to adapt.
4. integral type external pre-stress bundle according to claim 1 turns to saddle, it is characterized in that: described in turn to the both sides of the upper external pre-stress bundle entrance end of curved slab (6) all to have chamfered to form rounding off.
5. integral type external pre-stress bundle according to claim 1 turns to saddle, it is characterized in that: the outside of described clamping plate (3) is provided with 1～3 stiffening rib (4), described stiffening rib (4) arranges perpendicular to base plate (1) and clamping plate (3) simultaneously, and is welded to connect with the upper surface of base plate (1) and the lateral surface of clamping plate (3) respectively.
6. according to the integral type external pre-stress bundle described in claim 1～5 any one, turn to saddle, it is characterized in that: the thickness of slab of described stiffening rib (4) is 30mm, the thickness of slab of all the other plates is 10 ~ 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213712.7U CN203904835U (en) | 2014-04-29 | 2014-04-29 | Integrated external prestressing tendon steering saddle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213712.7U CN203904835U (en) | 2014-04-29 | 2014-04-29 | Integrated external prestressing tendon steering saddle |
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| Publication Number | Publication Date |
|---|---|
| CN203904835U true CN203904835U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213712.7U Expired - Lifetime CN203904835U (en) | 2014-04-29 | 2014-04-29 | Integrated external prestressing tendon steering saddle |
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| Country | Link |
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| CN (1) | CN203904835U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104746427A (en) * | 2015-03-24 | 2015-07-01 | 湖南大学 | External pre-stressing anchoring structure of ultra-high performance concrete thin-wall box girder |
| CN105133849A (en) * | 2015-07-29 | 2015-12-09 | 河海大学 | Prestress device for prestress FRP sheet material reinforced concrete beam and applying method |
| CN105297642A (en) * | 2015-11-06 | 2016-02-03 | 沈阳建筑大学 | Cover beam external prestressing reinforcing structure and construction method thereof |
| CZ306711B6 (en) * | 2016-04-20 | 2017-05-17 | Vysoké Učení Technické V Brně | A bolster for prestressing of supporting elements |
| CN107815977A (en) * | 2017-10-13 | 2018-03-20 | 中建三局第三建设工程有限责任公司 | Pre-stressed steel plate and presstressed reinforcing steel composite reinforcement large-span concrete beam construction method |
| CN109797984A (en) * | 2019-03-22 | 2019-05-24 | 东南大学 | A kind of multi-purpose transfer of the external prestressing steels of variable curvature |
-
2014
- 2014-04-29 CN CN201420213712.7U patent/CN203904835U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104746427A (en) * | 2015-03-24 | 2015-07-01 | 湖南大学 | External pre-stressing anchoring structure of ultra-high performance concrete thin-wall box girder |
| CN105133849A (en) * | 2015-07-29 | 2015-12-09 | 河海大学 | Prestress device for prestress FRP sheet material reinforced concrete beam and applying method |
| CN105297642A (en) * | 2015-11-06 | 2016-02-03 | 沈阳建筑大学 | Cover beam external prestressing reinforcing structure and construction method thereof |
| CZ306711B6 (en) * | 2016-04-20 | 2017-05-17 | Vysoké Učení Technické V Brně | A bolster for prestressing of supporting elements |
| CN107815977A (en) * | 2017-10-13 | 2018-03-20 | 中建三局第三建设工程有限责任公司 | Pre-stressed steel plate and presstressed reinforcing steel composite reinforcement large-span concrete beam construction method |
| CN109797984A (en) * | 2019-03-22 | 2019-05-24 | 东南大学 | A kind of multi-purpose transfer of the external prestressing steels of variable curvature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |