CN111945548A - Single-column pier bridge anti-overturning beam falling device - Google Patents
Single-column pier bridge anti-overturning beam falling device Download PDFInfo
- Publication number
- CN111945548A CN111945548A CN202010834851.1A CN202010834851A CN111945548A CN 111945548 A CN111945548 A CN 111945548A CN 202010834851 A CN202010834851 A CN 202010834851A CN 111945548 A CN111945548 A CN 111945548A
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- upper bracket
- steel cable
- bracket
- protective cover
- fixing nut
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anti-overturning beam falling device for a single-column pier bridge, which comprises a lower bracket and an upper bracket, wherein a steel cable and a second pressure spring are arranged between the lower bracket and the upper bracket, two ends of the steel cable respectively penetrate out of the lower bracket and the upper bracket, the lower end of the steel cable is provided with a locking nut, the upper end of the steel cable is provided with a fixing nut, and a first pressure spring is arranged between the fixing nut and the upper bracket; the upper bracket is movably provided with a protective cover, a button is arranged on the inner side wall of the protective cover and electrically connected with a warning lamp fixedly arranged on the main beam, and a limiting rod is arranged between the fixing nut and the protective cover. The anti-overturning bridge is provided with the first pressure spring, the second pressure spring, the protective cover, the limiting rod and the warning lamp, the anti-overturning capacity of the bridge is enhanced, the potential safety hazard of the bridge can be found and eliminated in time, the operation is convenient, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of bridge installation, in particular to a single-column pier bridge overturn and beam falling prevention device.
Background
When urban overpasses and high-grade highway ramp bridges are designed and built, single-column piers are widely adopted to support continuous bridges. In recent years, the phenomenon of bearing void above the single-column pier of the bridge is increasingly concerned by city managers, especially the occurrence of overturn accidents of the malignant beam body. Under the load effect, the single-column pier supports the continuous beam to bear larger torque, and the anti-overturning capacity is higher, especially under the action of an overloaded vehicle, the bridge has huge potential safety hazards in transverse stability. The width of the cover beam of the multiple single-column piers is consistent with the width of the beam bottom, and the support on the cover beam utilizes the space to the maximum extent and basically has no adjustment room.
Disclosure of Invention
The invention aims to provide the anti-overturning beam falling device of the single-column pier bridge, which can improve the anti-overturning capacity and is convenient to observe and maintain.
The technical scheme of the invention is as follows:
the anti-overturning beam falling device of the single-column pier bridge comprises a lower bracket arranged on a cover beam and an upper bracket arranged on a main beam, wherein the lower bracket and the upper bracket are connected through a steel cable; a protective cover is movably arranged on the upper bracket, a button is arranged on the inner side wall of the protective cover, the button is electrically connected with a warning lamp fixedly arranged on the main beam, and a limiting rod is arranged between the fixing nut and the protective cover; and a second pressure spring sleeved on the steel cable is arranged between the lower bracket and the upper bracket.
By adopting the structure, the upper bracket and the lower bracket are arranged at the position of the coping of the pier column and the position of the main beam above the coping, the processed steel cable is penetrated between the upper bracket and the lower bracket, and the steel cable is screwed up by nuts at two ends, wherein a first pressure spring is arranged between the nut at the corresponding end and the upper bracket at the upper end of the upper bracket, a second pressure spring sleeved on the steel cable is also arranged between the upper bracket and the lower bracket, when a heavy vehicle runs by leaning against the outer side of the bridge, the upper bracket extrudes the second pressure spring, the lower end of the second pressure spring is abutted against the upper end surface of the lower bracket to buffer the pressure and provide the anti-overturning force of the bridge, if the second pressure spring fails to bear the pressure, the vehicle gravity drives the lower bracket and the shield to simultaneously move downwards to extrude the first pressure spring, meanwhile, the end surface of the extending end of the; in addition, if the second pressure spring is not invalid and the steel cable is disconnected, the first pressure spring directly drives the screwed steel cable to move upwards and abut against the button by the fixing nut under the action of elastic force, and the button turns on the warning light to remind traffic police, bridge maintenance personnel and vehicles to pay attention to safety and timely eliminate potential safety hazards; when maintaining, open the guard shield of movable setting, just can tear open and trade the cable wire, first pressure spring and fixation nut, because the pretightning force of first pressure spring has the installation requirement, fixation nut spiro union position must guarantee stably, especially under the condition of elastic force butt, in order to guarantee the stability of spiro union position better, be equipped with the gag lever post between fixation nut and guard shield, guarantee to install and target in place, reach the ability that strengthens bridge antidumping, the atress situation of bridge has been improved, and can in time discover and eliminate the potential safety hazard of bridge, moreover, the steam generator is simple in structure and compact, the operation is convenient, and the application scope is wide.
In order to simplify the structure and facilitate the operation, preferably, the lower end of one side of the protective cover is hinged with the corresponding position of the upper end surface of the upper bracket, and the other side of the protective cover is locked and fixed on the upper bracket.
In order to facilitate use and simplify the structure, as preferred, a limiting rod is inserted on the outer side wall of the fixing nut, a section of arc-shaped groove is arranged at the position, corresponding to the limiting rod, on the shield, when the shield is turned over, the arc-shaped groove is sleeved on the limiting rod, and the limiting rod horizontally extends out of the arc-shaped groove, so that the knob of the fixing nut is controlled to be in place, the pre-pressure of the first pressure spring is ensured, and the fixing nut is prevented from loosening.
In order to reflect potential safety hazards in time, preferably, a button is arranged on the upper end face of the inner side wall of the protective cover and located right above the first pressure spring, and a gap between the lower end face of the button and the end face of the penetrating end of the steel cable on the upper bracket is 1-3 mm.
In order to facilitate installation, the upper bracket and the main beam and the lower bracket and the cover beam are connected and fixed through bar planting screws and bar planting nuts.
In order to enhance the bearing capacity, preferably, the cavities formed by the contact surfaces between the upper bracket and the main beam and between the lower bracket and the cover beam are filled with concrete, and the filled concrete wraps the corresponding positions of the bar-planting screws.
Has the advantages that: the anti-overturning bridge is provided with the first pressure spring, the second pressure spring, the protective cover, the limiting rod and the warning lamp, the anti-overturning capacity of the bridge is enhanced, the potential safety hazard of the bridge can be found and eliminated in time, the operation is convenient, and the application range is wide.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of the shield and the limiting rod.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, 2 and 3, the present invention includes a lower bracket 31 disposed on the capping beam 3 and an upper bracket 11 disposed on the main beam 1, the lower bracket 31 is connected with the upper bracket 11 by a steel cable 2, two ends of the steel cable 2 respectively penetrate through the lower bracket 31 and the upper bracket 11, a lock nut is screwed on a penetrating end of the lower bracket 31 of the steel cable 2, a fixing nut is screwed on a penetrating end of the upper bracket 11 of the steel cable 2, and a first pressure spring 21 sleeved on the steel cable 2 is disposed between the fixing nut and the upper bracket 11.
The upper bracket 11 is also hinged with one side of the lower end of the shield 4, and the other side of the upper bracket 11 is fixed on the lock catch; the upper end face of the inner side wall of the shield 4 is provided with a button 41, the button 41 is positioned right above the first pressure spring 21, a gap between the lower end face of the button 41 and the end face of the penetrating end of the upper bracket 11 of the steel cable 2 is 1-3 mm, and the button 41 is electrically connected with a warning lamp 5 fixedly arranged on the main beam 1.
A limiting rod 42 is inserted on the outer side wall of the fixing nut, a section of arc-shaped groove 43 is arranged on the position, corresponding to the limiting rod 42, of the shield 4, when the shield 4 is turned over, the arc-shaped groove 43 is sleeved on the limiting rod 42, and the limiting rod 42 horizontally extends out of the arc-shaped groove 43, so that the fixing nut knob is controlled to be in place, the pre-pressure of the first pressure spring 21 is ensured, and the fixing nut is prevented from loosening.
A second pressure spring 22 sleeved on the steel cable 2 is arranged between the lower bracket 31 and the upper bracket 11; the upper bracket 11 and the main beam 1, and the lower bracket 31 and the bent cap 3 are fixedly connected by a bar planting screw and a bar planting nut; and concrete is filled in cavities formed by the contact surfaces between the upper bracket 11 and the main beam 1 and between the lower bracket 31 and the cover beam 3, and the filled concrete wraps the corresponding positions of the bar-planting screw rods.
The using method of the invention is as follows:
as shown in fig. 1 to 3, a warning lamp 5 is provided at a position corresponding to a shield 4 on a girder 1, the warning lamp 5 is electrically connected to a button 41 in the corresponding shield 4, an upper bracket 11 and a lower bracket 31 are respectively installed at a position of an upper girder 1 and a position of a capping beam 3 of a pier, and the upper bracket 11 and the lower bracket 31 are integrated with the existing capping beam 3 and girder 1 by using an implanted screw and filled concrete.
The processed wire rope 2 is passed between the upper bracket 11 and the lower bracket 31, and the wire rope 2 is tightened with nuts at both ends, wherein, a first pressure spring 21 is arranged between a fixed nut at the corresponding end of the upper bracket 11 and the upper bracket 11, a second pressure spring 22 sleeved on the steel cable 2 is also arranged between the upper bracket and the lower bracket, when the heavy vehicle runs by the outer side of the bridge, the upper bracket 11 extrudes the second pressure spring 22, the lower end of the second pressure spring 22 is abutted against the upper end surface of the lower bracket 31 to buffer the pressure, and provides the anti-overturning force for the bridge, if the second pressure spring 22 fails to bear pressure, the main beam and the upper bracket 11 drive the shield 4 to move downwards at the same time under the drive of the gravity of the vehicle, the upper end of the inner side wall of the shield 4 extrudes the steel cable 2, the first pressure spring 21 is extruded by the fixing nut, the first pressure spring 21 plays a role in secondary protection, at this time, the end surface of the upper end of the steel cable 2 is abutted against the button 41, and the warning lamp 5 is turned on by the button 41; in addition, if the second compression spring 22 is not invalid and the steel cable 2 is disconnected, the first compression spring 21 directly drives the screwed steel cable 2 to move upwards and abut against the button 41 by the fixing nut under the action of elastic force, and the button 41 turns on the warning light 5 to remind traffic police, bridge maintenance personnel and vehicles to pay attention to safety and timely eliminate potential safety hazards; guard shield 4 is fixed to the hasp, can prevent the upset of guard shield 4 atress, avoids 2 top butt buttons 41 failures on the cable wire, and in order to improve the reaction of warning, the lower terminal surface of button 41 is 1 ~ 3mm, preferably 3mm with the clearance of cable wire 2 between the terminal surface of last bracket 11 break-out end.
During maintenance, the lock hook is taken down from the lock ring, the shield 4 hinged on the upper bracket 11 is opened, the steel cable 2, the first pressure spring 21 and the fixing nut can be disassembled and replaced, the bolt connection position of the fixing nut must be ensured to be stable due to the pre-tightening force of the first pressure spring 21, especially under the condition of elastic force abutting, in order to better ensure the stability of the bolt connection position, a limit rod 42 is arranged between the fixing nut and the shield 4, when the shield 4 is turned over, the arc-shaped groove 43 is sleeved on the limit rod 42, and the limit rod 42 horizontally extends out of the arc-shaped groove 43, so that the knob of the fixing nut is controlled to be in place, the pre-pressure of the first pressure spring 21 is ensured, and the fixing nut is prevented from loosening, thereby the anti-overturning capacity of the bridge is enhanced, the stress condition of the bridge is improved, the potential safety hazard of the bridge can be timely discovered and eliminated, the application range is wide.
The number of the upper bracket 11, the steel cable 2 and the lower bracket 31 is set according to the use requirement of the pier, each button 41 and the warning lamp 5 form a group of warning units, the warning units which are set correspondingly in number are connected by adopting a parallel circuit so as to find and remove potential safety hazards in a targeted manner, and the electrical connection between the button 41 and the warning lamp 5 is not repeated herein.
The undescribed parts of the present invention are consistent with the prior art, and are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.
Claims (6)
1. The utility model provides a single column mound bridge prevents toppling and falls roof beam device which characterized in that: the steel cable fixing device comprises a lower bracket (31) arranged on a cover beam (3) and an upper bracket (11) arranged on a main beam (1), wherein the lower bracket (31) is connected with the upper bracket (11) through a steel cable (2), two ends of the steel cable (2) respectively penetrate through the lower bracket (31) and the upper bracket (11), a locking nut is screwed at the penetrating end of the lower bracket (31) of the steel cable (2), a fixing nut is screwed at the penetrating end of the upper bracket (11) of the steel cable (2), and a first pressure spring (21) sleeved on the steel cable (2) is arranged between the fixing nut and the upper bracket (11); a protective cover (4) is movably arranged on the upper bracket (11), a button (41) is arranged on the inner side wall of the protective cover (4), the button (41) is electrically connected with a warning lamp (5) fixedly arranged on the main beam (1), and a limiting rod (41) is arranged between the fixing nut and the protective cover (4); a second pressure spring (22) sleeved on the steel cable (2) is arranged between the lower bracket (31) and the upper bracket (11).
2. The anti-overturning beam falling device for the single-column pier bridge, according to claim 1, is characterized in that: one side of the lower end of the protective cover (4) is hinged with the corresponding position of the upper end surface of the upper bracket (11), and the other side of the lower end of the protective cover is fixed on the upper bracket (11) through a lock catch.
3. The anti-overturning beam falling device for the single-column pier bridge, according to claim 1, is characterized in that: the fixing nut is characterized in that a limiting rod (42) is inserted on the outer side wall of the fixing nut, a section of arc-shaped groove (43) is formed in the position, corresponding to the limiting rod (42), of the protective cover (4), when the protective cover (4) is turned over, the arc-shaped groove (43) is sleeved on the limiting rod (42), and the limiting rod (42) horizontally extends out of the arc-shaped groove (43) so that a knob of the fixing nut can be controlled to be in place, pre-pressure of the first pressure spring (21) is guaranteed, and the fixing nut is prevented from being loosened.
4. The anti-overturning beam falling device for the single-column pier bridge, according to claim 1, is characterized in that: the upper end face of the inner side wall of the shield (4) is provided with a button (41), the button (41) is located right above the first pressure spring (21), and a gap between the lower end face of the button (41) and the end face of the penetrating end of the steel cable (2) on the upper bracket (11) is 1-3 mm.
5. The anti-overturning beam falling device for the single-column pier bridge, according to claim 1, is characterized in that: and the upper bracket (11) and the main beam (1) as well as the lower bracket (31) and the cover beam (3) are fixedly connected by a bar planting screw rod and a bar planting nut.
6. The anti-overturning beam falling device for the single-column pier bridge, according to claim 5, is characterized in that: concrete is filled in a cavity formed by contact surfaces between the upper bracket (11) and the main beam (1) and between the lower bracket (31) and the cover beam (3), and the filled concrete wraps the corresponding position of the bar planting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010834851.1A CN111945548A (en) | 2020-08-19 | 2020-08-19 | Single-column pier bridge anti-overturning beam falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010834851.1A CN111945548A (en) | 2020-08-19 | 2020-08-19 | Single-column pier bridge anti-overturning beam falling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111945548A true CN111945548A (en) | 2020-11-17 |
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ID=73342085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010834851.1A Pending CN111945548A (en) | 2020-08-19 | 2020-08-19 | Single-column pier bridge anti-overturning beam falling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111945548A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774804A (en) * | 2021-09-27 | 2021-12-10 | 黎建林 | Vertical pre-tensioning device for connecting upper structure and lower structure of bridge and construction method |
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2020
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| CN113774804A (en) * | 2021-09-27 | 2021-12-10 | 黎建林 | Vertical pre-tensioning device for connecting upper structure and lower structure of bridge and construction method |
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Application publication date: 20201117 |