CN205012238U - A letter T roof beam anchor based on violently open prestressing force - Google Patents
A letter T roof beam anchor based on violently open prestressing force Download PDFInfo
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- CN205012238U CN205012238U CN201520801819.8U CN201520801819U CN205012238U CN 205012238 U CN205012238 U CN 205012238U CN 201520801819 U CN201520801819 U CN 201520801819U CN 205012238 U CN205012238 U CN 205012238U
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- girders
- steel
- anchor
- junction plate
- wire
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Abstract
The utility model discloses a letter T roof beam anchor based on violently open prestressing force exists for overcoming prior art that stretch -draw end space is narrow and small, loss of prestress big and turn to the complicated problem of device. The anchor including 4 anchor steel member (14) that the structure is the same, 2 prestressing force strand (16) that supporting steel cushion (18) is the same with 2 root structure that the structure is the same, 4 anchor steel member (14) that individual structure is the same utilize high strength bolt to install the both ends of propping up T web (20) of T roof beam both sides in the letter symmetrically, 2 the supporting steel cushion (18) that individual structure is the same utilizes high strength bolt to install the middle department of propping up T web (20) of T roof beam both sides in the letter symmetrically, the both ends of prestressing force strand (16) that 2 root structure is the same are passed through the heading anchor and are fixed respectively on anchor steel member (14), the middle department of prestressing force strand (16) that 2 root structure is the same and the top contact of 2 supporting steel cushions (18) that the structure is the same.
Description
Technical field
The utility model relates to a kind of reinforcing special purpose device of bridge, and or rather, the utility model relates to a kind of Simple T-Girders anchor device based on transverse tension prestress.
Background technology
Along with the prolongation of bridge construction service time, the safety of bridge construction and durability will certainly reduce, and with regard to entail dangers to traffic safety after it is damaged to certain degree, tend becomes " bottleneck " in traffic network.Theoretical and the fact all shows that it will be very uneconomical for rebuilding it, is also irrational, and conventional method is keeped in repair them, reinforces and upgrades.External prestressing strengthening technology is that one is comparatively commonly used and comparatively effective active enforcement technology, and external prestressing strengthening technology has the supporting capacity significantly improving bridge construction and the advantage reducing crack width.Traditional external prestressing construction technology needs intending the two ends erection tensioning equipment of reinforcement, but usually has end diaphragm herein and close to pier, stretch-draw space be restricted, affect constructing operation.So, often stretching end is moved a segment distance to span centre, and the length of prestressed reinforcement will certainly be reduced like this, make loss of prestress comparatively large, thus cause consolidation effect not good.For this problem, people also been proposed and are applied in old bridge reinforcement by transverse tension prestress technology, and it can well overcome the defect that traditional external prestressing exists.But when there is also stretch-draw, jack is not easily put, the more difficult setting of steering.Therefore, propose a kind of easy construction, quick, and the good external prestressing strengthening engineering method of consolidation effect just seems very urgent.
Summary of the invention
Technical problem to be solved in the utility model overcomes prior art to there is stretching end narrow space, loss of prestress is large and transfer is complicated problem, provides a kind of Simple T-Girders anchor device based on transverse tension prestress.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize: the described Simple T-Girders anchor device based on transverse tension prestress includes the identical anchoring steel beam column of 4 structures, prestressed strand that support steel cushion block that 2 structures are identical is identical with 2 root architectures;
The anchoring steel beam column that 4 structures are identical utilizes high-strength bolt to be installed on the two ends of T web of Simple T-Girders both sides symmetrically, the support steel cushion block that 2 structures are identical utilizes high-strength bolt to be installed on the middle of the T web both sides of Simple T-Girders symmetrically, the two ends of the prestressed strand that 2 root architectures are identical are separately fixed on anchoring steel beam column by bulb-end anchorage, and the tip contact of the support steel cushion block that respectively with 2, the middle of the prestressed strand that 2 root architectures are identical is identical is connected.
Anchoring steel beam column described in technical scheme is by flat base, junction plate, gripper shoe, supporting steel pipe and floor that 2 block structures are identical.Described flat base is slabbed construction part, flat base is provided with equably 4 bolts hole, described junction plate is the slabbed construction part of rectangle, and the center of junction plate is provided with one for inserting the round tube hole of prestressed strand, described gripper shoe is the slabbed construction part of isosceles triangle, junction plate is vertically fixed on the center position of flat base, the gripper shoe that 2 block structures are identical is fixed on the flat base at junction plate two ends, the gripper shoe that 2 block structures are identical is vertical with junction plate, simultaneously vertical with flat base again, supporting steel pipe is arranged on junction plate side and is fixedly connected with it, the axis of rotation conllinear of the round tube hole for inserting prestressed strand of the axis of rotation of supporting steel pipe and the center of junction plate, the floor of booster action has been provided with between the bottom of supporting steel pipe and flat base upper surface, supporting steel pipe is connected with flat base by floor.
Support steel cushion block described in technical scheme is made up of upper support bar, retracting cylinder and round bottom seat; Described upper support bar is the structural member of a top for the fork-shaped of fixing prestressed strand, and the bottom of cramp bar is provided with the external screw thread for being connected with the upper end of retracting cylinder; Described retracting cylinder is that an inside is provided with internal thread and outside is the straight barrel type structural member of 6 limit shapes; Described round bottom seat is made up of circular discs and base support bar, circular discs is provided with 4 equally distributed No. 2 bolts hole, base support bar is provided with external screw thread, base support bar is arranged on the center of circular discs vertically, between the two for being fixedly connected with, the centre of gyration line conllinear of base support bar and circular discs; Base support bar in round bottom seat is threaded with the lower end of retracting cylinder, and the upper end of retracting cylinder is connected with the lower thread of cramp bar.
Bulb-end anchorage described in technical scheme is made up of anchor slab, compressor wire and steel wire pier nose; Described anchor slab is circular or rectangular plate type structural member, and anchor slab is evenly distributed with the steel wire through hole that 5 to 150 structures of prestressed steel wire are identical, the axis of rotation of each steel wire through hole is parallel to each other, and and the symmetrical centre line parallel of anchor slab; Described compressor wire is form the intrafascicular individual wire of prestress steel; One end of every root individual wire that prestress steel is intrafascicular and compressor wire steel wire through hole from 1 anchor slab is inserted, and stretch out from the other end of steel wire through hole, then the cheese head adopting pier head machine to become to prevent firm silk from extracting by the external part pier of each compressor wire and steel wire pier nose.
Compared with prior art the beneficial effects of the utility model are:
1. the Simple T-Girders anchor device based on transverse tension prestress described in the utility model utilizes bulb-end anchorage to be anchored in by prestressed reinforcement on anchoring steel beam column, utilize high-strength bolt to be fixed on T beam by anchoring steel beam column simultaneously, make in stretching process and after stretch-draw, loss of prestress is minimum;
2. the less stretching force of tensioning equipment applying based on adopting in the Simple T-Girders anchor device of transverse tension prestress described in the utility model just can make prestressed strand reach the pulling force of design, thus can simplify stretching process;
3. described in the utility model based in the Simple T-Girders anchor device of transverse tension prestress T beam reinforce section can select arbitrarily according to Scheme of Strengthening, be convenient to practical operation;
4. the Simple T-Girders anchor device based on transverse tension prestress described in the utility model utilizes the mode of web bilateral symmetry stretch-draw, can not produce additional lateral bending and shearing after making reinforcing to structure;
5. the Simple T-Girders anchor device based on transverse tension prestress described in the utility model can utilize pier head machine that anchoring steel beam column and prestressed strand are linked to be entirety on the ground, is beneficial to operation and saves man-hour;
6. tensioning equipment can be placed on T beam water chestnut or web by the Simple T-Girders anchor device based on transverse tension prestress described in the utility model, is convenient to stretch-draw and carries out, reduce difficulty of construction and increase work efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the transverse tension prestress principle schematic of the Simple T-Girders reinforcement means based on transverse tension prestress described in the utility model;
Fig. 2 be have employed described in the utility model based on the stressed schematic diagram of the equivalence of T beam under transverse tension prestress effect after the Simple T-Girders reinforcement means of transverse tension prestress;
Fig. 3-a is the front view of the anchoring steel beam column structure composition based on adopting in the Simple T-Girders reinforcement means of transverse tension prestress described in the utility model;
Fig. 3-b is the attached view of the anchoring steel beam column structure composition based on adopting in the Simple T-Girders reinforcement means of transverse tension prestress described in the utility model;
Fig. 3-c is the right view of the anchoring steel beam column structure composition based on adopting in the Simple T-Girders reinforcement means of transverse tension prestress described in the utility model;
Fig. 4-a is the front view of the support steel cushion block structure composition based on adopting in the Simple T-Girders reinforcement means of transverse tension prestress described in the utility model;
Fig. 4-b is the sectional view at B-B place in Fig. 4-a;
Fig. 5 is the front view of the bulb-end anchorage structure composition based on adopting in the Simple T-Girders reinforcement means of transverse tension prestress described in the utility model;
Fig. 6. for described in the utility model based on the schematic diagram of state before T girder tensioning in the Simple T-Girders reinforcement means of transverse tension prestress;
Fig. 7-a has described in the utility modelly reinforced the front view of rear state based on T beam in the Simple T-Girders reinforcement means of transverse tension prestress;
Fig. 7-b is the sectional view at C-C place in Fig. 7-a;
Fig. 8 is the FB(flow block) of the Simple T-Girders reinforcement means based on transverse tension prestress described in the utility model;
In figure: No. 1.1 bolt hole, 2. junction plate, 3. gripper shoe, 4. supporting steel pipes, 5. flat base, 6. floor, 7. upper support bar, 8. retracting cylinder, 9. round bottom seat, No. 10.2 bolts hole, 11. anchor slabs, 12. compressor wires, 13 steel wire pier noses, 14. anchoring steel beam column, No. 15.2 anchoring steel beam column, 16. prestressed strands, No. 17.2 prestressed strands, 18. support steel cushion blocks, No. 19.2 support steel cushion blocks, 20.T web, 21.T beam centre of form face.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is explained in detail:
Better be applied in the reinforcing of T-shaped beam to enable the Simple T-Girders reinforcement means based on transverse tension prestress described in the utility model, make T beam in reinforcing or reinforce after loss of prestress little, and can realize repeatedly repeating to reinforce, be provided with the anchor device that will adopt, described anchor device includes anchoring steel beam column 14, support steel cushion block 18 and prestressed strand 16.
Consult Fig. 3-a to Fig. 3-c, the firm component 14 of anchoring is made up of 6 parts, namely by flat base 5, gripper shoe 3 that junction plate 2,2 block structure is identical, supporting steel pipe 4 and floor 6;
Described flat base 5 is the slabbed construction part for being connected to by anchoring steel beam column 14 on T beam, flat base 5 is provided with equably 4 bolts hole 1,
Described junction plate 2 is the slabbed construction part of the rectangle for being connected with anchoring steel beam column 14 by prestressing tendon 16, and the center of junction plate 2 is provided with one for inserting the round tube hole of prestressed strand 16.
The identical gripper shoe 3 of 2 described block structures is in order to fully be fixed on the slabbed construction part of the isosceles triangle on flat base 5 by junction plate 2, junction plate 2 is vertically fixed on the center position of flat base 5, the gripper shoe 3 that 2 block structures are identical is fixed on the flat base 5 at junction plate 2 two ends, the gripper shoe 3 that 2 block structures are identical is vertical with junction plate 2, simultaneously vertical with flat base 5 again.
Described supporting steel pipe 4 is the cylinder mode part making prestressed strand 16 and junction plate 2 fully fix with flat base 5 better, supporting steel pipe 4 is arranged on junction plate 2 side and is fixedly connected with it, the axis of rotation conllinear of the round tube hole for inserting prestressed strand 16 of the axis of rotation of supporting steel pipe 4 and the center of junction plate 2, be provided with the floor 6 of booster action between the bottom of supporting steel pipe 4 and flat base 5 upper surface, supporting steel pipe 4 is connected with flat base 5 by floor 6.Floor 6 is in order to the better plate armature part be connected with flat base 5 by supporting steel pipe 4 thus.
Consult Fig. 4-a and Fig. 4-b, described support steel cushion block 18 is made up of 3 parts, is namely made up of with round bottom seat 9 upper support bar 7, retracting cylinder 8.
Described upper support bar 7 is the structural member of a top for the fork-shaped of fixing prestressed strand 16, and the bottom of cramp bar 7 is external screw thread, for being connected with the upper end of retracting cylinder 8;
Described retracting cylinder 8 is the straight barrel type structural member that an inside is provided with screw thread, outside is 6 limit shapes;
Described round bottom seat 9 is T-shaped structural member support steel cushion block 18 being fixed on T web 20, round bottom seat 9 is made up of circular discs and base support bar, base support bar is arranged on the center of circular discs vertically, between the two for being fixedly connected with, the centre of gyration line conllinear of base support bar and circular discs, base support bar is provided with external screw thread, circular discs is provided with 4 equally distributed No. 2 bolts hole 10, round bottom seat 9 is connected with the lower end of retracting cylinder 8 by this screw thread.
Consult Fig. 5, described bulb-end anchorage is made up of anchor slab 11, compressor wire 12 and steel wire pier nose 13.
Described anchor slab 11 is circular or rectangular plate type structural member, and anchor slab 11 is evenly distributed with the steel wire through hole that 5 to 150 structures of prestressed steel wire 12 are identical, the axis of rotation of each steel wire through hole is parallel to each other, and and the symmetrical centre line parallel of anchor slab 11.
Described compressor wire 12 is the individual wire in adopted prestressed strand 16, during use, many individual wire and compressor wire 12 are resolved in the end of prestressed strand 16, one end of every root individual wire and compressor wire 12 steel wire through hole from 1 anchor slab 11 is inserted, and stretch out from the other end of steel wire through hole, the cheese head then adopting special equipment pier head machine to become to prevent firm silk from extracting by each compressor wire 12 external part pier and steel wire pier nose 13;
The step of the Simple T-Girders reinforcement means based on transverse tension prestress described in the utility model is as follows:
1., according to the current condition of T beam, in conjunction with design specifications, calculate the stretching force meeting structural-load-carrying capacity ultimate limit state and serviceability limit state lower prestress steel bundle 16.
2., according to design stretching force, the prestressed strand 16 that two root architectures needed every sheet Simple T-Girders are identical, carry out processing and fabricating for the support steel cushion block 18 that anchoring steel beam column 14 that 4 of prestressed strand 16 being anchored in Simple T-Girders two ends are identical is identical be used for supporting stretch-draw prestressing force steel bundle 16 in the middle of prestressed strand 16 two.
3. utilize pier head machine to be separately fixed on anchoring steel beam column 14 at prestressed strand 16 two ends, be made into the bulb-end anchorage that loss of prestress is less.
4. the two ends of pair Simple T-Girders needed reinforcement are cleaned, Churn drill is utilized to punch perpendicular to T web 20 to the beam-ends of Simple T-Girders and span centre correspondence position, punching two ends is convenient to utilize high-strength bolt to be installed on by anchoring steel beam column 14 on the T web 20 at the two ends of Simple T-Girders, and middle punching is for installing support steel cushion block 18.
5. consult Fig. 6, utilize high-strength bolt to be anchored in by anchoring steel beam column 14 on the two ends of T web (20) of the both sides of Simple T-Girders, for stretch-draw prestressing force steel bundle 16 provides preparation.
6. at the both sides of Simple T-Girders span centre T web 20 erection stretch-draw jack, perpendicular to T web 20, stretch-draw prestressing force steel bundle 16 is to the stretching force of design needs symmetrically, and stretch-draw progress need be consistent, and avoids Simple T-Girders to produce transverse bending.
7., when after jack tension to design attitude, under support steel cushion block 18 is positioned over stretch-draw jack, utilize bolt to be anchored on the T web 20 of Simple T-Girders by the round bottom seat 9 in support steel cushion block 18, the then height of adjustable telescopic rod 8 to prestressed strand 16.
8. jack oil return, utilizes supporting firm cushion block 18 lateral force on prestressed strand 16 to be delivered on Simple T-Girders, and finally makes Simple T-Girders two ends eccentric compression.
9. remove tensioning equipment, and antirusting paint is smeared to support steel cushion block 18 and anchoring steel beam column 14.The reinforcement of Simple T-Girders transverse tension prestress completes.
Claims (4)
1. the Simple T-Girders anchor device based on transverse tension prestress, it is characterized in that, described anchor device includes the identical anchoring steel beam column (14) of 4 structures, prestressed strand (16) that support steel cushion block (18) that 2 structures are identical is identical with 2 root architectures;
The anchoring steel beam column (14) that 4 structures are identical utilizes high-strength bolt to be installed on the two ends of T web (20) of Simple T-Girders both sides symmetrically, the support steel cushion block (18) that 2 structures are identical utilizes high-strength bolt to be installed on the middle of the T web (20) of Simple T-Girders both sides symmetrically, the two ends of the prestressed strand (16) that 2 root architectures are identical are separately fixed on anchoring steel beam column (14) by bulb-end anchorage, the tip contact of the support steel cushion block (18) that respectively with 2, the middle of the prestressed strand (16) that 2 root architectures are identical is identical is connected.
2. according to the Simple T-Girders anchor device based on transverse tension prestress according to claim 1, it is characterized in that, described anchoring steel beam column (14) is by flat base (5), junction plate (2), gripper shoe (3) that 2 block structures are identical, supporting steel pipe (4) and floor (6);
Described flat base (5) is slabbed construction part, flat base (5) is provided with equably 4 bolts hole (1),
The slabbed construction part that described junction plate (2) is rectangle, the center of junction plate (2) is provided with one for inserting the round tube hole of prestressed strand (16);
The slabbed construction part that described gripper shoe (3) is isosceles triangle, junction plate (2) is vertically fixed on the center position of flat base (5), the gripper shoe (3) that 2 block structures are identical is fixed on the flat base (5) at junction plate (2) two ends, the gripper shoe (3) that 2 block structures are identical is vertical with junction plate (2), simultaneously vertical with flat base (5) again, supporting steel pipe (4) is arranged on junction plate (2) side and is fixedly connected with it, the axis of rotation conllinear of the round tube hole for inserting prestressed strand (16) of the axis of rotation of supporting steel pipe (4) and the center of junction plate (4), the floor (6) of booster action has been provided with between the bottom of supporting steel pipe (4) and flat base (5) upper surface, supporting steel pipe (4) is connected with flat base (5) by floor (6).
3. according to the Simple T-Girders anchor device based on transverse tension prestress according to claim 1, it is characterized in that, described support steel cushion block (18) is made up of with round bottom seat (9) upper support bar (7), retracting cylinder (8);
Described upper support bar (7) is the structural member of a top for the fork-shaped of fixing prestressed strand (16), and the bottom of cramp bar (7) is provided with the external screw thread for being connected with the upper end of retracting cylinder (8);
Described retracting cylinder (8) is the straight barrel type structural member that an inside is provided with internal thread, outside is 6 limit shapes;
Described round bottom seat (9) is made up of circular discs and base support bar, circular discs is provided with 4 equally distributed No. 2 bolts hole (10), base support bar is provided with external screw thread, base support bar is arranged on the center of circular discs vertically, between the two for being fixedly connected with, the centre of gyration line conllinear of base support bar and circular discs;
Base support bar in round bottom seat (9) is threaded with the lower end of retracting cylinder (8), and the upper end of retracting cylinder (8) is connected with the lower thread of cramp bar (7).
4. according to the Simple T-Girders anchor device based on transverse tension prestress according to claim 1, it is characterized in that, described bulb-end anchorage is made up of anchor slab (11), compressor wire (12) and steel wire pier nose (13);
Described anchor slab (11) is circular or rectangular plate type structural member, anchor slab (11) is evenly distributed with the steel wire through hole that 5 to 150 structures of prestressed steel wire (12) are identical, the axis of rotation of each steel wire through hole is parallel to each other, and and the symmetrical centre line parallel of anchor slab (11);
Described compressor wire (12) is the individual wire in composition prestressed strand (16);
Every root individual wire in prestressed strand (16) and compressor wire (12) insert from one end of 1 steel wire through hole anchor slab (11), and stretch out from the other end of steel wire through hole, then the cheese head adopting pier head machine to become to prevent firm silk from extracting by the external part pier of each compressor wire (12) and steel wire pier nose (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520801819.8U CN205012238U (en) | 2015-10-13 | 2015-10-13 | A letter T roof beam anchor based on violently open prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520801819.8U CN205012238U (en) | 2015-10-13 | 2015-10-13 | A letter T roof beam anchor based on violently open prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205012238U true CN205012238U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520801819.8U Withdrawn - After Issue CN205012238U (en) | 2015-10-13 | 2015-10-13 | A letter T roof beam anchor based on violently open prestressing force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205012238U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220623A (en) * | 2015-10-13 | 2016-01-06 | 吉林大学 | Based on Simple T-Girders reinforcement means and the anchor device of transverse tension prestress |
| CN105803917A (en) * | 2016-03-14 | 2016-07-27 | 沈阳建筑大学 | Method for preventing lateral bending deformation of edge beam of T-shaped beam bridge through external prestressing |
| CN106546395A (en) * | 2016-11-02 | 2017-03-29 | 重庆交通大学 | Simply supported beam loss of prestress detection method |
-
2015
- 2015-10-13 CN CN201520801819.8U patent/CN205012238U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220623A (en) * | 2015-10-13 | 2016-01-06 | 吉林大学 | Based on Simple T-Girders reinforcement means and the anchor device of transverse tension prestress |
| CN105220623B (en) * | 2015-10-13 | 2017-01-25 | 吉林大学 | Simply support T-beam strengthening method based on transverse tensioned prestressing, and anchor device |
| CN105803917A (en) * | 2016-03-14 | 2016-07-27 | 沈阳建筑大学 | Method for preventing lateral bending deformation of edge beam of T-shaped beam bridge through external prestressing |
| CN105803917B (en) * | 2016-03-14 | 2017-05-03 | 沈阳建筑大学 | Method for preventing lateral bending deformation of edge beam of T-shaped beam bridge through external prestressing |
| CN106546395A (en) * | 2016-11-02 | 2017-03-29 | 重庆交通大学 | Simply supported beam loss of prestress detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tan Guojin Inventor after: Sun Hongchao Inventor after: Zheng Jiguang Inventor after: Wang Hua Inventor after: Huang Bin Inventor after: Yu Di Inventor after: Wang Wensheng Inventor before: Tan Guojin Inventor before: Sun Hongchao Inventor before: Wang Hua Inventor before: Huang Bin Inventor before: Yu Di Inventor before: Wang Wensheng |
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| COR | Change of bibliographic data | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160315 Address after: 130012 Changchun Qianjin Street, Jilin, No. 2699 Patentee after: Jilin University Patentee after: Jilin Inst of Communication Sciences Address before: 130012 Changchun Qianjin Street, Jilin, No. 2699 Patentee before: Jilin University |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20161109 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |