CN111996927A - Fabricated reinforcement facility for preventing bridge from overturning and control method - Google Patents
Fabricated reinforcement facility for preventing bridge from overturning and control method Download PDFInfo
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- CN111996927A CN111996927A CN202010885078.1A CN202010885078A CN111996927A CN 111996927 A CN111996927 A CN 111996927A CN 202010885078 A CN202010885078 A CN 202010885078A CN 111996927 A CN111996927 A CN 111996927A
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention discloses an assembled reinforcement facility for preventing a bridge from overturning and a control method, the assembled reinforcement facility comprises a beam body, pier columns, steel cover beams, vertical section steel supports and rubber cushion blocks, the tops of the pier columns are connected with the beam body, the outer walls of the pier columns are provided with the steel cover beams, the bottoms of the pier columns are connected with a base, the two sides of the steel cover beams are provided with the vertical section steel supports, the top ends of the vertical section steel supports are provided with the rubber cushion blocks, sensors are arranged in the rubber cushion blocks, and the rubber cushion blocks are not connected with the beam body, and the assembled reinforcement facility has the advantages that: the structure is simple, and the stress form is clear; the original structure is not damaged without planting the steel bars; the assembly type structure is convenient and fast to construct, and only the bolting of the steel hoop is needed on site; the anti-overturning effect is good, the transient overturning damage of the beam body is changed into the ductile eccentric compression damage of the pier stud, and the pier stud can be detected and reinforced at the later stage.
Description
Technical Field
The invention relates to the field of bridge structure reinforcement, in particular to an assembly type reinforcement facility for preventing a bridge from overturning and a control method.
Background
Due to the problems of vehicle overload and the like, in the actual operation process, the potential safety hazard of overturning exists in part of the built bridge. Need consolidate it in order to solve the bridge problem of toppling. At present, the main reinforcing methods include methods of increasing a cover beam, adding a support and the like, or increasing a tension-compression rod to resist the overturning force through bar planting. These solutions may partially solve the bridge overturning problem. However, the construction is complex, the construction period is long, steel bars need to be planted, the original bridge structure is damaged, or the stress of the beam is not consistent with the original design after the support is additionally arranged, so that the transverse reinforcement in the positive and negative bending moment areas of the beam body is reversed, and the stress form of the original design is changed. In addition, in the prior art, the bottom or the web plate of the bridge box room is reinforced, and the anti-overturning effect is common.
Therefore, in order to solve the above technical problem, it is necessary to design an assembly type reinforcement facility for preventing a bridge from overturning, which solves the problems of complicated construction, long construction period, damage to the original bridge structure and insignificant effect in the reinforcement process in the prior art.
Disclosure of Invention
The invention aims to provide an assembly type reinforcement facility for preventing a bridge from overturning, and solves the problems that in the prior art, construction is complex, construction period is long, an original bridge structure is damaged, and effect is not remarkable.
The invention is realized by the following technical scheme:
the utility model provides an assembled reinforcement facility for preventing bridge from toppling, includes the roof beam body, pier stud, steel bent cap, vertical shaped steel support and rubber cushion, the top and the roof beam body of pier stud link to each other, the outer wall of pier stud sets up the steel bent cap, the bottom of pier stud is connected with the basement, the both sides of steel bent cap are provided with vertical shaped steel and support, the top that vertical shaped steel supported is provided with rubber cushion, the inside pressure sensor that is provided with of rubber cushion, rubber cushion does not link to each other with the roof beam body.
The reinforcing facility consists of a steel cover beam, vertical profile steel supports on two sides of the cover beam and a rubber pad block which is positioned at the top of the supports and provided with a pressure sensor, and finished products are two assembled facilities which are bolted after encircling a pier column on site.
In the prior art: in the prior art, a rubber cushion block is connected with a beam body, a support or other permanent supports are added in the prior art for reinforcing, the boundary condition and the stress form of an original bridge are changed, the compression area of an end cross beam is changed into a tension area, but enough tension steel bars are not usually configured at the position to cause cracking; in the prior art, the bottom or the web plate of the bridge box girder is reinforced, and the anti-overturning effect is general; the damage of the offset load gap bridge to the reinforced structure is difficult to measure; and, the inside sensor that is not provided with of rubber cushion among the prior art, when the bridge is gone up to the heavy weight unbalance loading, probably lead to the damage of pier stud and not in time detect the reinforcement to finally take place to collapse.
Compared with the prior art, the invention has the advantages that:
the sensor is arranged in the rubber cushion block, when heavy weight is loaded on a bridge in an unbalanced way, the beam body is caused to overturn towards one side, the wing plate is contacted with the rubber cushion block of the reinforcing facility, the pier, the beam body and the reinforcing facility form a temporary stable structure together, the beam body returns after the bridge is loaded, and the stress of the reinforcing facility and the pier column can be calculated reversely through data fed back by the pressure sensor on the surface of the rubber cushion block, so that the pier column can be detected and maintained.
Secondly, the rubber cushion block and the beam body are not in direct contact during the ordinary operation, the stress form of the original bridge is not changed in the normal operation state, the whole bridge is changed into a stable transverse simple support system only at the moment of overturning, and the stress system is restored after unbalance loading passes through the bridge, so that the problem of cracking caused by the fact that the boundary condition and the stress form of the original bridge are changed, the compression area of the end beam is changed into the tension area, and enough tension steel bars are not configured in the prior art is solved.
In conclusion, the fabricated reinforcement facility device solves the problems that in the prior art, no fabricated facility for overturn reinforcement exists, and construction is complex; needs to be planted with steel bars to destroy the original bridge structure.
Furthermore, a plurality of anti-collision guardrails are arranged on two sides of the beam body;
the plurality of anti-collision guardrails play a role in protecting vehicles.
Furthermore, the pier stud is connected with the beam body through the original bridge support;
the pier stud is connected with the beam body through the original bridge support, and comprises:
furthermore, the steel bent cap and the beam body are as wide as each other;
the size of the steel cover beam is determined by the size of a pier to be reinforced.
Furthermore, the steel cover beam structure is of a hoop type, the assembly type structure is convenient to construct, and only the steel hoop needs to be bolted on site.
The staple bolt formula is steel construction staple bolt form, and is more solid firm.
Furthermore, the rubber pad block structure is a plate structure;
the height of the rubber cushion block is not less than that of the original support of the beam body, the cushion block is arranged below the wing plate, and the whole transverse simply-supported beam is a transverse simply-supported system when the cushion block is tilted, so that the anti-overturning effect is good.
Further, the steel bent cap comprises roof beam board, a plurality of roof beam floor, horizontal stiffener, roof beam staple bolt and roof beam crab-bolt, the steel bent cap top is provided with the roof beam board, the centre of steel bent cap is provided with the roof beam staple bolt, the roof beam staple bolt is connected through the roof beam crab-bolt, the vertical connection of a plurality of roof beam floor is in the steel bent cap, horizontal stiffener transverse connection is in the steel bent cap.
Further, the vertical section steel support consists of a support side plate, a rib plate and a transverse stiffening plate, the support side plate and the transverse stiffening plate are transversely connected in the vertical section steel support, and the rib plate is vertically connected in the vertical section steel support;
the length of the vertical section steel support is determined by the beam height of the bridge to be reinforced and the size of the wing plate.
Furthermore, the assembled reinforcing facility is made of steel;
the steel is firmer and firmer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the assembled reinforcing facility for preventing the bridge from overturning has a simple structure and a definite stress form; the original structure is not damaged without planting the steel bars.
2. The assembled reinforcing facility for preventing the bridge from overturning is convenient and fast in assembled structure construction, and only the steel hoop needs to be bolted on site.
3. The assembled reinforcing facility for preventing the bridge from overturning has good anti-overturning effect, changes the instantaneous overturning damage of the bridge body into the ductile eccentric compression damage of the pier stud, and can detect and reinforce the pier stud in the later period.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of the operation of the reinforcing facility.
FIG. 2 is a schematic elevation view of a reinforcing facility.
Fig. 3 is a schematic side view of a reinforcing facility.
Fig. 4 is a schematic plan view of a reinforcing facility.
Reference numbers and corresponding part names in the drawings:
the steel cover beam comprises a beam body 1, a steel cover beam top plate 1-1, a steel cover beam rib plate 1-2, a steel cover beam transverse stiffening plate 1-3, a steel cover beam hoop 1-4, a steel cover beam anchor bolt 1-5, a pier column 2, a vertical section steel supporting side plate 2-1, a vertical section steel supporting rib plate 2-2, a vertical section steel supporting transverse stiffening plate 2-3, a steel cover beam 3-4, a vertical section steel support 4 and a rubber cushion block 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the assembly type reinforcement facility for preventing a bridge from overturning comprises a beam body 1, pier columns 2, steel cover beams 3, vertical section steel supports 4 and rubber cushion blocks 5, wherein the tops of the pier columns 2 are connected with the beam body 1, the steel cover beams 3 are arranged on the outer walls of the pier columns 2, the bottoms of the pier columns 2 are connected with a base, the vertical section steel supports 4 are arranged on two sides of each steel cover beam 3, the rubber cushion blocks 5 are arranged at the top ends of the vertical section steel supports 4, pressure sensors are arranged inside the rubber cushion blocks 5, and the rubber cushion blocks 5 are not connected with the beam body 1.
The working process is as follows: during normal operation, the reinforcing facilities are only connected with the bridge at the top of the pier stud through the hoop, and the reinforcing facilities do not participate in the stress of the main beam. When a large weight is loaded on the bridge in an unbalanced way and the beam body possibly topples, the wing plates are firstly contacted with the rubber cushion blocks of the reinforcing facility, the contact acting force is recorded, the beam body and the pier stud form a temporary stable stress structure, and the beam body returns to the original stress system after the unbalanced load passes.
Example 2
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, in the present embodiment, based on embodiment 1, a plurality of crash barriers are disposed on two sides of the beam body 1; the pier stud 2 is connected with the beam body 1 through an original bridge support; the steel bent cap 3 and the beam body 1 are as wide as each other; the steel bent cap 3 is of a hoop type structure; the rubber cushion block 5 is of a plate structure; the steel bent cap 3 comprises a top beam plate 1-1, a plurality of beam rib plates 1-2, transverse stiffening plates 1-3, beam hoops 1-4 and beam anchor bolts 1-5, wherein the top of the steel bent cap 3 is provided with the top beam plate 1-1, the middle of the steel bent cap 3 is provided with the beam hoops 1-4, the beam hoops 1-4 are connected through the beam anchor bolts 1-5, the beam rib plates 1-2 are vertically connected in the steel bent cap 3, and the transverse stiffening plates 1-3 are transversely connected in the steel bent cap 3; the vertical section steel support 4 consists of a support side plate 2-1, a rib plate 2-2 and a transverse stiffening plate 2-3, the support side plate 2-1 and the transverse stiffening plate 2-3 are transversely connected in the vertical section steel support 4, and the rib plate 2-2 is vertically connected in the vertical section steel support 4; the assembled reinforcing facility is made of steel.
Example 3
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present embodiment is based on embodiments 1 and 2, and further includes a computer controller electrically connected to the pressure sensor; the pressure sensor is used for collecting pressure signals of the pressed bridge, and the computer controller is used for receiving the pressure signals collected by the pressure sensor.
A control method of the fabricated reinforcement facility for preventing bridge from overturning based on claim 9, comprising the steps of:
s1: when the unbalance loading bridge is loaded and the bridge is overturned, the pressure sensor collects a pressure signal of the bridge under pressure and transmits the pressure signal to the computer controller;
s2: the computer controller receives the pressure signal collected by the pressure sensor, and compares the value of the received pressure signal with an alarm value: if the pressure signal value is smaller than the warning value, the full bridge can continuously enter a normal operation period; if the pressure signal value is larger than the warning value, the computer controller sends an instruction to start the warning device to send a warning signal;
s3: the maintainer receives the alarm signal and then detects the pier stud 2.
The deflection-loaded bridge-crossing rear beam body returns, the stress of the reinforcement facility and the pier column can be inversely calculated through data fed back by the pressure sensor on the surface of the rubber cushion block, and the process of calculating the bearing capacity is as follows:
and measuring the pressure N, and knowing that the transverse distance between the sensor and the original pier column is y, N & y is the additional bending moment at the pier column. The pier top axial force is F when the original design overturns, the bending moment is 0, the most unfavorable axial force of the reinforced pier top is F, and the measured bending moment M is equal to N.y. The bearing capacity of the pier column under the eccentric compression effect can be calculated by calculating the length of the pier through the axial force, the bending moment, the pier section parameters and the pier.
And (3) adding a setting timer to ensure that the resistance of the steel structure reinforcement facility under the action of unbalance loading is greater than the resistance of the original pier stud, and then calculating the warning value of the pressure sensor through the resistance of the pier stud in a reverse way, wherein the process of calculating the warning value is as follows:
knowing the material, size, reinforcing bars and calculated length of the original pier stud, the breaking bending moment Mmax corresponding to the worst axial force F of the pier top when the pier stud overturns in an eccentric compression state can be calculated, and knowing the transverse distance y between the pier stud and the sensor, the critical pressure Nmax at the position of the sensor can be calculated to be Mmax/y.
When the overturning happens and the numerical value of the pressure sensor processed by the computer controller is smaller than the warning value, the full bridge can continuously enter a normal operation period; when the value of the sensor is larger than the warning value, the pier column is possibly damaged and needs to be detected and then can be used.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides an assembled reinforcement facility for preventing bridge topples, includes the roof beam body (1), pier stud (2), steel bent cap (3), vertical shaped steel support (4) and rubber cushion (5), the top of pier stud (2) links to each other with the roof beam body (1), the outer wall of pier stud (2) sets up steel bent cap (3), the bottom of pier stud (2) is connected with the basement, the both sides of steel bent cap (3) are provided with vertical shaped steel support (4), the top that vertical shaped steel supported (4) is provided with rubber cushion (5), its characterized in that, the inside pressure sensor that is provided with of rubber cushion (5), rubber cushion (5) do not link to each other or contact with the roof beam body (1).
2. The fabricated reinforcement facility for preventing bridge overturn according to claim 1, characterized in that a plurality of crash barriers are arranged on two sides of the beam body (1).
3. The fabricated reinforcement facility for preventing bridge from overturning according to claim 1, wherein the pier stud (2) is connected with the beam body (1) through an original bridge support.
4. Fabricated reinforcement for the prevention of bridge toppling, according to claim 1, characterized in that the steel capping beam (3) is the same width as the beam body (1).
5. Fabricated reinforcement for the prevention of bridge toppling, according to claim 1, characterized in that the steel capping beam (3) structure is hoop-type.
6. Fabricated reinforcement for the prevention of bridge toppling according to claim 1, characterized in that the rubber pad (5) structure is a plate structure.
7. The assembly type reinforcement facility for preventing the bridge from overturning is characterized in that the steel bent cap (3) consists of a beam top plate (1-1), a plurality of beam rib plates (1-2), transverse stiffening plates (1-3), beam hoops (1-4) and beam anchor bolts (1-5), the beam top plate (1-1) is arranged at the top of the steel bent cap (3), the beam hoops (1-4) are arranged in the middle of the steel bent cap (3), the beam hoops (1-4) are connected through the beam anchor bolts (1-5), the beam rib plates (1-2) are vertically connected in the steel bent cap (3), and the transverse stiffening plates (1-3) are transversely connected in the steel bent cap (3).
8. The fabricated reinforcement facility for preventing bridge from overturning according to claim 1, characterized in that the vertical steel supports (4) are composed of support side plates (2-1), rib plates (2-2) and transverse stiffening plates (2-3), the support side plates (2-1) and the transverse stiffening plates (2-3) are transversely connected in the vertical steel supports (4), and the rib plates (2-2) are vertically connected in the vertical steel supports (4).
9. The fabricated reinforcement facility for preventing bridge from overturning of claim 1, further comprising a computer controller electrically connected with the pressure sensor; the pressure sensor is used for collecting pressure signals of the pressed bridge, and the computer controller is used for receiving the pressure signals collected by the pressure sensor.
10. The control method of the fabricated reinforcement facility for preventing bridge from overturning according to claim 9, comprising the steps of:
s1: when the unbalance loading bridge is loaded and the bridge is overturned, the pressure sensor collects a pressure signal of the bridge under pressure and transmits the pressure signal to the computer controller;
s2: the computer controller receives the pressure signal collected by the pressure sensor, and compares the value of the received pressure signal with an alarm value: if the pressure signal value is smaller than the warning value, the full bridge can continuously enter a normal operation period; if the pressure signal value is larger than the warning value, the computer controller sends an instruction to start the warning device to send a warning signal;
s3: the maintainer detects the pier stud (2) after receiving the alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885078.1A CN111996927A (en) | 2020-08-28 | 2020-08-28 | Fabricated reinforcement facility for preventing bridge from overturning and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010885078.1A CN111996927A (en) | 2020-08-28 | 2020-08-28 | Fabricated reinforcement facility for preventing bridge from overturning and control method |
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| CN111996927A true CN111996927A (en) | 2020-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136793A (en) * | 2021-04-30 | 2021-07-20 | 四川省交通勘察设计研究院有限公司 | Novel steel structure capping beam and construction method |
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2020
- 2020-08-28 CN CN202010885078.1A patent/CN111996927A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136793A (en) * | 2021-04-30 | 2021-07-20 | 四川省交通勘察设计研究院有限公司 | Novel steel structure capping beam and construction method |
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