CN211256645U - Tensile anti-collision type anti-seismic expansion joint - Google Patents
Tensile anti-collision type anti-seismic expansion joint Download PDFInfo
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- CN211256645U CN211256645U CN201921221930.4U CN201921221930U CN211256645U CN 211256645 U CN211256645 U CN 211256645U CN 201921221930 U CN201921221930 U CN 201921221930U CN 211256645 U CN211256645 U CN 211256645U
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Abstract
The application belongs to the field of civil engineering and earthquake resistance, and provides a tensile anti-collision earthquake-resistant expansion joint which comprises a profile steel expansion joint body, a displacement controller, embedded steel bars, embedded steel plates, connecting steel bars and the like; the profile steel expansion joint body comprises a profile steel boundary beam, a water stop rubber strip and an anchoring steel bar; the displacement controller comprises a tension and compression rod, a displacement box, a cable anchor box, a limiting cable, a rubber cushion seat, a cable anchor head and the like. A tension and compression rod is arranged in a displacement box of the displacement controller, can axially slide relative to the displacement box and has better rotation capacity; the bracing pole both ends are passed through spacing cable and are connected with the displacement case, and the spacing cable of bridge normal operation use stage is in lax state, and after the displacement of the both sides roof beam body of expansion joint is less than or is greater than certain setting value, spacing cable atress is taut, retrains the displacement of the both sides roof beam body of expansion joint, can prevent effectively that the roof beam body from colliding in opposite directions and excessively big dorsad shift, avoids expansion joint department collision damage and the emergence of roof beam calamity that falls.
Description
Technical Field
The application belongs to civil engineering, antidetonation field, and specifically speaking relates to a tensile anticollision type antidetonation expansion joint.
Background
Earthquake disasters are natural disasters which greatly affect human society, and with the development of the society, the population wealth is more gathered, and the sensitivity, the destructiveness and the complexity of the earthquake disasters are more prominent. Earthquake disasters occurred frequently at home and abroad since the 21 st century, wherein earthquakes of more than 8 grades are 4 times. Many bridges collapse or are seriously damaged in the earthquake, so that the traffic routes of earthquake areas are cut off, and huge life and property losses are brought. Earthquake disasters show that the typical failure modes of the bridge superstructure are as follows: the method comprises the following steps of beam falling earthquake damage, expansion joint impact damage, bridge deck pavement and expansion joint deflection damage. The falling beam has the largest destructive effect and the most difficult restoration, can cause the paralysis of the whole traffic, and brings great obstruction to the post-disaster relief work and the first-aid repair work. The impact and deflection damage at the expansion joint is high in frequency and not beneficial to quick recovery of the structure after the earthquake, the restorable function of the structure is seriously affected, and the impact and deflection damage at the expansion joint can aggravate the beam falling disaster.
The traditional bridge expansion joint can better adapt to the expansion requirement of normal use of the bridge generally, but lacks an effective displacement restraint device and cannot meet the tensile and anti-collision requirement under the earthquake. Aiming at the impact and displacement damage of the falling beam and the expansion joint of the upper structure, the current main solution is to adopt a steel plate limiting device, a prestressed steel bar connecting device or an independent anti-collision and tensile device at the position of the expansion joint of the bridge structure, and the methods can solve the impact and displacement damage of the falling beam and the expansion joint of the upper structure to a certain extent, but have the defects of unclear mechanical constitutive relation, unreliable force transmission, complex design and construction, influence on the attractiveness of the bridge structure and the like.
Disclosure of Invention
To the above problem, the aim at of this application provides a tensile anticollision type antidetonation expansion joint, this tensile anticollision type antidetonation expansion joint constitutive relation is clear, pass the definite and definite reliable, design construction convenience's tensile anticollision type antidetonation expansion joint, the device can effectively restrict the deformation range at bridge expansion joint, restraint expansion joint both sides roof beam body displacement, can effectively prevent roof beam body collision in opposite directions and too big dorsad shift, avoid expansion joint department collision damage and the emergence of roof beam calamity that falls, guarantee the recoverable function of structure.
In order to achieve the above object, the present application provides the following technical solutions:
the utility model provides a tensile anticollision type antidetonation expansion joint, includes shaped steel expansion joint body, displacement controller, embedded steel, pre-buried steel sheet, connecting reinforcement, steel fiber concrete. The profile steel expansion joint body comprises a profile steel edge beam, a water stop rubber strip and an anchoring steel bar; the displacement controller comprises a tension and compression rod, a displacement box, a stay cable anchor box, a limiting stay cable, a rubber cushion seat, a stay cable anchor head, a buffer spring and a shear nail.
Mounting grooves of expansion joint members are reserved in the beam bodies on two sides of the bridge expansion joint, and embedded steel bars and embedded steel plates are sequentially arranged in the mounting grooves from bottom to top; the deformed steel edge beams are arranged at two sides of the bridge expansion joint, connected with the beam body through anchoring steel bars and connected with the embedded steel plates through connecting steel bars; the water-stopping rubber strip is embedded and fixed at the inner side of the deformed steel edge beam.
The upper end of a displacement box of the displacement controller is welded with the deformed steel edge beam of the section steel expansion joint body, and the lower end of the displacement box is welded with the embedded steel plate. The outer side walls of two ends of the displacement box are respectively welded with a group of inhaul cable anchor boxes, each group of inhaul cable anchor boxes comprise two inhaul cable anchor boxes, the two inhaul cable anchor boxes are respectively symmetrically arranged on two opposite side walls of the displacement box, the inhaul cable anchor boxes are both closed cavities, and cable holes are formed in the joints of the inhaul cable anchor boxes and the displacement box; the tension and compression rod is arranged in the displacement box, two ends of the tension and compression rod are respectively provided with a connecting hole which transversely penetrates through the tension and compression rod, and a limiting inhaul cable penetrates through one connecting hole; the two ends of the limiting inhaul cable penetrate through the connecting holes and then respectively enter the corresponding inhaul cable anchor boxes through cable holes on the two sides, and a buffer spring and an inhaul cable anchor head are sequentially arranged at the tail end of the limiting inhaul cable so as to prevent the limiting inhaul cable from sliding out of the inhaul cable anchor boxes along the cable holes when the limiting inhaul cable is pulled; the displacement incasement still is provided with the rubber cushion, draws the depression bar to be located the rubber cushion inboard, and both are pressed the contact and are connected, and the rubber cushion forms good pressed contact with drawing the depression bar, can guarantee to draw the depression bar relative displacement case axial slip to possess better rotation ability.
After the embedded steel bars, the embedded steel plates, the profile steel expansion joint body and the displacement controller are installed in place, steel fiber concrete is poured in the installation groove to form a whole with the beam body, and meanwhile, shear nails are arranged on the side face and the top face of the displacement box to ensure the reliability of force transmission of the displacement box and the steel fiber concrete.
The application is suitable for buildings such as urban viaducts, highway bridges, railway bridges and the like.
Compared with the prior art, the technical scheme provided by the application has the advantages that:
(1) this application is through addding displacement controller, and effective control roof beam body relative displacement can prevent effectively that the roof beam body from colliding in opposite directions and too big dorsad shift, avoids expansion joint department collision damage and the emergence of earthquake disasters such as the emergence of roof beam calamity that falls.
(2) The displacement controller and the profile steel expansion joint are integrally designed, and the device has the advantages of definite force transmission path and reliable structure force transmission.
(3) The anti-seismic pull cable has better applicability to bridges of different bridge types and anti-seismic fortification grades, and can meet the design requirements of different engineering anti-seismic by adjusting the number of pull cables, the looseness, the rigidity of the pull and compression rods and other parameters.
(4) The construction method has the characteristics of convenience in design and installation and guaranteed construction quality.
Drawings
Fig. 1 is a schematic plan view of the tensile anti-collision type anti-seismic expansion joint provided in the embodiment of the present application.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a plan configuration view of a displacement controller according to an embodiment of the present application.
Reference numbers in the figures: the special-shaped steel edge beam is 1, the water stop rubber strip is 2, the tension and compression rod is 3, the displacement box is 4, the inhaul cable anchor box is 5, the limiting inhaul cable is 6, the rubber cushion seat is 7, the inhaul cable anchor head is 8, the buffer spring is 9, the shear nail is 10, the embedded steel plate is 11, the embedded steel bar is 12, the anchoring steel bar is 13, the connecting steel bar is 14, and the steel fiber concrete is 15.
Detailed Description
For a more clear understanding of the technical spirit and advantages of the present application, applicant shall now describe in detail the following embodiments with reference to the accompanying drawings. The description of the embodiments is not intended to limit the scope of the present application, and any equivalents in form or detail that are based on the concepts of the present application are intended to be included within the scope of the present application.
As shown in fig. 1 to 3, a tensile anti-collision anti-seismic expansion joint includes a profile steel expansion joint body, a displacement controller, embedded steel bars 12, embedded steel plates 11, connecting steel bars 14, and steel fiber concrete 15. The profile steel expansion joint body comprises a profile steel boundary beam 1, a water stop rubber strip 2 and an anchoring reinforcing steel bar 13; the displacement controller comprises a tension and compression rod 3, a displacement box 4, a cable anchor box 5, a limiting cable 6, a rubber cushion 7, a cable anchor head 8, a buffer spring 9 and a shear nail 10.
Mounting grooves of expansion joint members are reserved in the beam bodies on two sides of the bridge expansion joint, and embedded steel bars 12 and embedded steel plates 11 are sequentially arranged in the mounting grooves from bottom to top; the deformed steel edge beam 1 is arranged at two sides of the bridge expansion joint, is connected with the beam body through the anchoring reinforcing steel bar 13 and is connected with the embedded steel plate 11 through the connecting reinforcing steel bar 14; the water stop rubber strip 2 is embedded and fixed at the inner side of the deformed steel edge beam 1.
The upper end of a displacement box 4 of the displacement controller is welded with a deformed steel edge beam 1 of the section steel expansion joint body, and the lower end of the displacement box is welded with an embedded steel plate 11. A group of inhaul cable anchor boxes are welded on the outer side walls of two ends of the displacement box 4 respectively, each group of inhaul cable anchor boxes comprises two inhaul cable anchor boxes 5, the two inhaul cable anchor boxes 5 are symmetrically arranged on two opposite side walls of the displacement box 4 respectively, the inhaul cable anchor boxes 5 are closed cavities, and cable holes are formed in the joints of the inhaul cable anchor boxes 5 and the displacement box 4; the tension and compression rod 3 is arranged in the displacement box 4, two ends of the tension and compression rod are respectively provided with a connecting hole which transversely penetrates through the tension and compression rod 3, and a limiting inhaul cable 6 penetrates through one connecting hole; two ends of a limiting inhaul cable 6 penetrate through the connecting holes and then respectively enter the corresponding inhaul cable anchor boxes 5 through cable holes on two sides, a buffer spring 9 and an inhaul cable anchor head 8 are sequentially arranged at the tail end of the limiting inhaul cable 6 so as to prevent the limiting inhaul cable 6 from sliding out of the inhaul cable anchor boxes 5 along the cable holes when being pulled, the inhaul cable anchor head 8 is clamped and fixed at the end parts of the limiting inhaul cable 6, the buffer spring 9 is arranged between the inhaul cable anchor head 8 and the side wall of the displacement box 4, and the limiting inhaul cable 6) passes through the buffer spring 9; still be provided with rubber base 7 in the displacement case 4, draw the depression bar 3 to be located rubber base 7 inboard, both compression contact are connected, and rubber base 7 forms good compression contact with draw depression bar 3, can guarantee that draw depression bar 3 can be relative displacement case 4 endwise slip to possess better rotation capacity.
After the embedded steel bars 12, the embedded steel plates 11, the profile steel expansion joint body and the displacement controller are installed in place, steel fiber concrete 15 is poured in the installation groove to form a whole with the beam body, and meanwhile, shear nails 10 are arranged on the side face and the top face of the displacement box 4, so that the reliability of force transmission between the displacement box 4 and the steel fiber concrete 15 is guaranteed.
When the relative displacement of the beam bodies on the two sides of the expansion joint is smaller than or larger than a certain value, the limiting inhaul cable 6 is tensioned under stress, and the tension and compression rod 3 restrains the displacement of the beam bodies on the two sides of the expansion joint; the inhaul cable anchor box 5 provides anchoring and end head moving areas for the limiting inhaul cable 6, ensures that the limiting inhaul cable 6 is loosened or tensioned, and the buffer spring 9 and the inhaul cable anchor head 6 ensure that the inhaul cable is reliable in force transmission and has the buffering and energy-consuming effects.
In the present application, the shape of the tension and compression bar 3 of the displacement controller may be rectangular, circular, polygonal, annular, or other shapes.
In the present application, the deformed steel edge beam 1 used in cooperation with the displacement controller may be of other types such as C-type, Z-type, F-type, or L-type, and may be hot-rolled deformed steel or hot-rolled deformed steel.
In this application, displacement controller's spacing cable 6 is made by steel strand wires, or high strength wire rope, or carbon fiber bundle.
In this application, displacement controller's spacing cable 6 can be single, also can be many combined action.
In this application, can set up single displacement controller in the bridge expansion joint, also can set up a plurality of displacement controllers.
The displacement controller can be welded with the embedded steel plate and can also be directly anchored in the beam body.
The bridge expansion joint installation groove can be integrally cast with the beam body by adopting steel fiber concrete 15, and can also be made of other high-performance concrete and other materials.
The above description of the embodiments is not intended to limit the scope of the present application, and therefore, the present application is not limited to the above embodiments, and any modifications and improvements made according to the spirit of the present application, which are merely in form and not substantial, should be construed as falling within the scope of the present application.
Claims (9)
1. The utility model provides a tensile anticollision type antidetonation expansion joint which characterized in that: the steel expansion joint comprises a section steel expansion joint body, a displacement controller, embedded steel bars (12), embedded steel plates (11), connecting steel bars (14) and steel fiber concrete (15); the profile steel expansion joint body comprises a profile steel edge beam (1), a water stop rubber strip (2) and an anchoring reinforcing steel bar (13); the displacement controller comprises a tension and compression rod (3), a displacement box (4), a cable anchor box (5), a limiting cable (6), a rubber cushion seat (7), a cable anchor head (8), a buffer spring (9) and a shear nail (10);
mounting grooves of expansion joint members are reserved in the beam bodies on two sides of the bridge expansion joint, and embedded steel bars (12) and embedded steel plates (11) are sequentially arranged in the mounting grooves from bottom to top; the deformed steel edge beam (1) is arranged at two sides of the bridge expansion joint, is connected with the beam body through an anchoring steel bar (13) and is connected with the embedded steel plate (11) through a connecting steel bar (14); the water stop rubber strip (2) is embedded and fixed at the inner side of the deformed steel edge beam (1);
the upper end of a displacement box (4) of the displacement controller is welded with a deformed steel edge beam (1) of the section steel expansion joint body, and the lower end of the displacement box is welded with an embedded steel plate (11); a group of inhaul cable anchor boxes are welded on the outer side walls of two ends of the displacement box (4), each group of inhaul cable anchor boxes comprises two inhaul cable anchor boxes (5), the two inhaul cable anchor boxes (5) are symmetrically arranged on two opposite side walls of the displacement box (4) respectively, the inhaul cable anchor boxes (5) are closed cavities, and cable holes are formed in the joints of the inhaul cable anchor boxes (5) and the displacement box (4); the tension and compression rod (3) is arranged in the displacement box (4), two ends of the tension and compression rod are respectively provided with a connecting hole which transversely penetrates through the tension and compression rod (3), and a limiting inhaul cable (6) penetrates through one connecting hole; two ends of a limiting inhaul cable (6) penetrate through the connecting holes and then respectively enter the corresponding inhaul cable anchor boxes (5) through cable holes on two sides, a buffer spring (9) and an inhaul cable anchor head (8) are sequentially arranged at the tail end of the limiting inhaul cable (6), the inhaul cable anchor head (8) is clamped and fixed at the end part of the limiting inhaul cable (6), the buffer spring (9) is arranged between the inhaul cable anchor head (8) and the side wall of the displacement box (4), and the limiting inhaul cable (6) penetrates through the buffer spring (9) and can slide relatively; a rubber cushion seat (7) is also arranged in the displacement box (4), the tension and compression rod (3) is positioned at the inner side of the rubber cushion seat (7), and the tension and compression rod and the rubber cushion seat are in pressed contact connection;
after the embedded steel bars (12), the embedded steel plates (11), the profile steel expansion joint body and the displacement controller are installed in place, concrete is poured in the installation grooves to form a whole with the beam body, and meanwhile shear nails (10) are arranged on the side face and the top face of the displacement box (4).
2. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the deformed steel edge beam (1) is C-shaped, Z-shaped, F-shaped or L-shaped.
3. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the deformed steel edge beam (1) is made of hot-rolled deformed steel or hot-rolled deformed steel.
4. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the shape of the tension and compression rod (3) is rectangular, circular, polygonal or annular.
5. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the limiting inhaul cable (6) is made of a steel strand, a high-strength steel wire rope or a carbon fiber bundle.
6. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the limiting inhaul cable (6) adopts a single or a plurality of combined actions.
7. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the steel fiber concrete (15) and the beam body are cast into a whole.
8. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: the displacement controller is welded with the embedded steel plate or anchored in the beam body.
9. The anti-tension anti-collision anti-seismic expansion joint according to claim 1, characterized in that: a single displacement controller or a plurality of displacement controllers are arranged in one bridge expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221930.4U CN211256645U (en) | 2019-07-31 | 2019-07-31 | Tensile anti-collision type anti-seismic expansion joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921221930.4U CN211256645U (en) | 2019-07-31 | 2019-07-31 | Tensile anti-collision type anti-seismic expansion joint |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878138A (en) * | 2021-01-18 | 2021-06-01 | 杨文丽 | Rapid sealing and reinforcing device and method for highway expansion joint |
| CN112942088A (en) * | 2021-02-03 | 2021-06-11 | 中铁大桥勘测设计院集团有限公司 | Bridge limit control modulus expansion joint device |
| CN113914210A (en) * | 2021-10-20 | 2022-01-11 | 中冶南方城市建设工程技术有限公司 | Segmental prefabricated seamless expansion joint device and construction method thereof |
| CN114606822A (en) * | 2022-03-23 | 2022-06-10 | 天津大学 | Buffering component, self-adaptive system and method for self-recovery after road earthquake |
-
2019
- 2019-07-31 CN CN201921221930.4U patent/CN211256645U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878138A (en) * | 2021-01-18 | 2021-06-01 | 杨文丽 | Rapid sealing and reinforcing device and method for highway expansion joint |
| CN112942088A (en) * | 2021-02-03 | 2021-06-11 | 中铁大桥勘测设计院集团有限公司 | Bridge limit control modulus expansion joint device |
| CN113914210A (en) * | 2021-10-20 | 2022-01-11 | 中冶南方城市建设工程技术有限公司 | Segmental prefabricated seamless expansion joint device and construction method thereof |
| CN114606822A (en) * | 2022-03-23 | 2022-06-10 | 天津大学 | Buffering component, self-adaptive system and method for self-recovery after road earthquake |
| CN114606822B (en) * | 2022-03-23 | 2024-01-30 | 天津大学 | Buffer assembly for self-recovery after road earthquake, self-adaptive system and method |
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