CN221193027U - Traffic flow guaranteeing device for paving Bailey beam support above old bridge - Google Patents
Traffic flow guaranteeing device for paving Bailey beam support above old bridge Download PDFInfo
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- CN221193027U CN221193027U CN202322344667.0U CN202322344667U CN221193027U CN 221193027 U CN221193027 U CN 221193027U CN 202322344667 U CN202322344667 U CN 202322344667U CN 221193027 U CN221193027 U CN 221193027U
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- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 8
- 230000035939 shock Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The utility model discloses a traffic flow-keeping device for paving a Bailey beam bracket above an old bridge, which comprises: the temporary support structure comprises a bridge head beam support, wherein the bridge head beam support is arranged on the abutment back of the abutment or the bridge head butt strap; the temporary main beam is a Bailey beam and is arranged above the old bridge, and the end part of the temporary main beam is arranged on a bridge head beam support; and the temporary bridge deck structure is arranged on the temporary main girder. The utility model can avoid the influence on the reconstruction and reinforcement of the old bridge caused by the transmission of the load and vibration generated by the passing of the vehicle on the temporary bridge deck structure to the main girder of the old bridge.
Description
Technical Field
The utility model belongs to the field of old bridge reconstruction. More particularly, the utility model relates to a traffic flow-keeping device for paving a beret beam bracket above an old bridge.
Background
The engineering of old bridge reconstruction, such as reinforcing by sticking steel plates, increasing the section of a concrete structure, and reinforcing by prestress tensioning, often requires that the girder structure is not affected by vehicle load and vibration, i.e. the bridge needs to be interrupted in traffic. In order to meet the requirements of road traffic and smoothness, the following two processing methods are generally adopted: 1) For the situation of expanding an old bridge lane, the old bridge is used for ensuring passing, the new bridge is used for ensuring passing after construction is completed, and the old bridge is reinforced again, the method has the defects that the construction of the new bridge and the transformation of the old bridge cannot be operated in parallel, the overall project period is prolonged, and the project cost is increased; 2) For the condition that only the old bridge needs to be reinforced, temporary bridges and bridge head channels need to be marked on the side surfaces of the old bridge and newly repaired, so that project cost is greatly increased. Therefore, an economic and efficient traffic guiding and modifying method is sought in old bridge modification, and is always an important research target in the old bridge modification industry, especially in the situation of difficulty in sign.
Disclosure of utility model
It is an object of the present utility model to solve at least the above problems and to provide at least the advantages to be described later.
The utility model aims to provide a traffic smoothness device for paving a Bailey beam bracket above an old bridge, which can prevent the load and vibration of a vehicle from being transferred to the old bridge girder to influence the construction transformation of the old bridge girder.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a traffic flow control device for laying bailey beam brackets over an old bridge, comprising:
The temporary support structure comprises a bridge head beam support, wherein the bridge head beam support is arranged on the abutment back of the abutment or the bridge head butt strap;
The temporary main beam is a Bailey beam and is arranged above the old bridge, and the end part of the temporary main beam is arranged on a bridge head beam support;
and the temporary bridge deck structure is arranged on the temporary main girder.
Preferably, the temporary support structure comprises shock absorbing and isolating supports arranged on the deck at the bridge pier.
Preferably, the temporary supporting structure comprises a beam supporting structure, the bridge deck at the bridge pier is provided with a mounting hole, the mounting hole penetrates through the bridge deck, the lower end of the beam supporting structure penetrates through the mounting hole to be supported on the old bridge pier, and the temporary main beam is arranged on the beam supporting structure.
Preferably, the height distance of the bottom of the temporary main girder above the old bridge deck is 20-50cm.
Preferably, bridge head temporary slope adjusting devices are arranged on bridge head butt straps at two ends of the bridge, and the bridge head temporary slope adjusting devices are of wedge structures.
Preferably, the longitudinal gradient of the bridge head temporary slope adjusting device is less than or equal to 10 percent, and the height of the wedge-shaped section is 0-20cm.
Preferably, the temporary deck structure includes at least temporary transverse distribution beams disposed on the lower flanges of the temporary main beams.
Preferably, when the space between the temporary transverse distribution beams is more than or equal to 5cm, the temporary bridge deck structure further comprises bridge decks, and the bridge decks are arranged on the temporary transverse distribution beams.
The utility model at least comprises the following beneficial effects:
According to the bridge with smaller span, the Bailey beam is used as the temporary main beam, the middle part of the temporary main beam is not required to be provided with a support, and the two ends of the temporary main beam are arranged on the abutment back of the bridge abutment or the bridge head beam support on the bridge head butt strap, so that the influence on the reinforcement of the old bridge caused by the transmission of load and vibration generated during the passing of a vehicle to the old bridge main beam is avoided. For the bridge with larger span, the temporary girder is supported by arranging the shock absorbing and isolating support on the bridge deck at the bridge pier position, or the temporary girder is supported by installing the girder supporting structure on the bridge pier after the installation hole is chiseled on the bridge deck at the bridge pier position, so that the temporary girder is prevented from bending, and meanwhile, the reinforcement of the old bridge, which is influenced by the load and vibration generated during the passing of the vehicle, can be avoided.
Secondly, for the engineering needing to widen the old bridge road, the vehicle can pass through a smooth device built above the old bridge, and the new bridge construction and the old bridge reconstruction can be constructed simultaneously, so that the old bridge reconstruction is not limited by the influence of the new bridge and the new road construction progress any more, and finally the total project period can be shortened to reduce the total project cost.
Thirdly, the utility model does not widen the bridge lane, only needs to reconstruct the engineering of the old bridge, vehicles can pass through the smooth device above the old bridge, and compared with the traffic guiding and modifying method for constructing the temporary bridge on the side surface of the bridge, the utility model has the advantages of no restriction on characterization, no need of newly repairing the bridge head and the temporary bridge pier, and shorter construction period, and greatly reduces project cost.
Fourth, the utility model provides a brand new traffic guiding and modifying thought for old bridge modification, so that the old bridge modification is not limited by various boundary conditions.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic diagram of a front view of an embodiment of the present utility model;
Fig. 2 is a schematic side view of an embodiment of the present utility model.
1. A bridge abutment; 2. a temporary main beam; 3. a shock absorption and isolation support; 4. temporary slope adjusting device of bridge head; 5. temporary deck structures.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, disposed, or integrally connected or disposed. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The terms "transverse," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description of the present utility model based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1 and 2, the present utility model provides a traffic flow protection device for paving a beret beam bracket above an old bridge, which includes:
the temporary support structure comprises a bridge head beam support 1, wherein the bridge head beam support 1 is arranged on the abutment back of the abutment or the bridge head butt strap;
The temporary main beam 2 is a Bailey beam, the temporary main beam 2 is arranged above the old bridge, and the end part of the temporary main beam 2 is arranged on the bridge head support 1;
A temporary deck structure 5, which is arranged on the temporary main girder 2.
In this technical scheme to bailey beam support is as interim girder 2, has longer span, to the bridge of span weak point, the middle part of interim girder 2 need not to set up interim girder 2 bearing structure again, and load, the vibrations that the vehicle was current to produce are transmitted to the abutment back of abutment or bridge head butt strap through bridge head beam support 1, and the girder of old bridge does not receive load, the vibrations's that the vehicle was current to produce influence. The bridge head beam support 1 is arranged outside the old bridge, and the position where the old bridge girder is prevented from being influenced by the load and vibration of the vehicle is within the protection scope of the utility model. The bridge girder support 1 may be a supporting structure conventionally used in the art, such as a steel supporting structure, a rubber pad, a cement support, etc. The temporary bridge deck structure 5 can comprise temporary transverse distribution beams and bridge decks, and can also only comprise the temporary transverse distribution beams, wherein if the distance between adjacent temporary transverse distribution beams is more than or equal to 5cm, the bridge decks are arranged on the temporary transverse distribution beams, and if the distance between adjacent temporary transverse distribution beams is less than 5cm, the bridge decks are not required to be paved.
In another technical scheme, the temporary supporting structure comprises a shock-absorbing and isolating support 3, and the shock-absorbing and isolating support 3 is arranged on a bridge deck at a bridge pier. For the great engineering of old bridge span, in order to avoid the condition that temporary girder 2 appears bending deformation, the middle part of temporary girder 2 needs to set up bearing structure in order to increase the atress of temporary girder 2, in this technical scheme, set up on the decking of pier position department and subtract shock insulation support 3, such as the shock attenuation structure of gasbag, hydraulic stem etc. reduce the shock that the vehicle passes through and produces to the influence of old bridge girder to on transmitting the vehicle load to old bridge pier, avoided the vehicle to pass through to the influence of old bridge transformation construction.
In another technical scheme, the temporary supporting structure comprises a beam supporting structure, a mounting hole is formed in a bridge deck at the bridge pier, the mounting hole penetrates through the bridge deck, the lower end of the beam supporting structure penetrates through the mounting hole to be supported on an old bridge pier, and the temporary main beam 2 is arranged on the beam supporting structure. For the engineering with larger old bridge span, the technical scheme can also be adopted, and the load and vibration generated on the vehicle on the smooth device are directly transmitted to the bridge pier through the beam supporting structure, so that the load and vibration generated by the vehicle passing can not influence the reconstruction construction of the old bridge girder.
In another technical scheme, the height distance of the bottom of the temporary main girder 2 higher than the old bridge deck is 20-50cm. The temporary girder 2 is arranged on the old bridge deck, and the distance between the bottom of the girder and the bridge deck is 20-50cm, so that the temporary girder 2 is prevented from being contacted with the old bridge deck after being deformed.
In another technical scheme, bridge head temporary slope adjusting devices 4 are arranged on bridge head butt straps at two ends of a bridge, and the bridge head temporary slope adjusting devices 4 are of wedge structures. The temporary bridge head slope adjusting device 4 is arranged so as to facilitate the normal passing of vehicles. The bridge head temporary slope adjusting device 4 can be of a steel welding structure.
In another technical scheme, the longitudinal gradient of the bridge head temporary slope adjusting device 4 is less than or equal to 10%, and the height of the wedge-shaped section is 0-20cm.
In another embodiment, the temporary deck structure 5 comprises at least temporary transverse distribution beams, which are arranged on the lower flanges of the temporary main beams 2. The temporary transverse distribution beam is arranged on the lower flange of the temporary main beam 2, directly bears the load of the vehicle and transmits the load of the vehicle to the temporary main beam 2. The temporary transverse distribution beams are generally steel structures such as channel steel and I-steel, and bridge decks are not required to be arranged between the temporary transverse distribution beams when the space between the temporary transverse distribution beams is less than 5 cm.
In another technical scheme, when the space between the temporary transverse distribution beams is more than or equal to 5cm, the temporary bridge deck structure 5 further comprises bridge decks, and the bridge decks are arranged on the temporary transverse distribution beams. The deck boards are typically made of sheet steel.
< Application example >
The concrete application of the utility model is illustrated by taking a three-span continuous beam bridge (3 multiplied by 18 m), wherein the bridge lanes are not widened and the engineering of renewing the old bridge is taken as an example because a large number of cracks appear in the bridge and the cross section is required to be reinforced by the reinforcement.
Constructing a temporary support system: the temporary support body system comprises temporary supports on bridge piers and temporary supports on bridge abutments. Temporary support on the pier: and (3) opening holes in bridge decks at the tops of bridge piers of the old bridge, supporting the bridge support structure on the bridge piers of the old bridge through bridge decks, and directly avoiding the influence of the load of the temporary bridge on the main girders of the old bridge, wherein the bridge deck is exposed by the bridge support structure for 20cm. The bridge abutment back is provided with a bridge abutment beam support 2, and the bridge abutment beam support 2 can be a common support with the height of 20cm.
Constructing a temporary bridge head slope adjusting device 4: the temporary slope adjusting device formed by welding the section steel is arranged on the bridge head butt strap, so that a vehicle can drive onto a temporary bridge from a road. The device is fixed on the bridge head butt strap through the planted bar, the gradient of the longitudinal bridge is 10%, the height of the wedge-shaped section is 0-20cm, the length of the longitudinal bridge is 200cm, and the width of the transverse bridge is 400cm. And integrally hoisting by using an automobile crane.
Constructing a temporary main girder 2: the temporary main beam 2 is arranged on the main beam of the old bridge, the temporary main beam 2 adopts a Bailey beam, and the left side and the right side of the temporary main beam are respectively 3 rows of single-layer designs with the width of 1.0m. The Bailey beam is erected on the temporary supports of the bridge pier at the position 2 and the bridge abutment at the position 2, and is installed from one bridge head to the other bridge head by using an automobile crane.
Constructing a temporary bridge deck structure 5: the temporary bridge deck structure 5 is a temporary transverse distribution beam, the temporary transverse distribution beam is arranged on the lower chord member of the Bailey beam, the temporary transverse distribution beam adopts C20 channel steel, the notch faces downwards, the net distance 5cm is smaller than the vehicle passing allowable value, no bridge deck is arranged, and the vehicle directly runs on the densely distributed channel steel.
The road renovation project has no widening of roads and bridges, and the general traffic guiding and modifying scheme establishes temporary bridges on old bridges, and the temporary bridges alternately pass in two directions, so that only a single lane is needed on the bridge deck.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. Traffic guaranteeing device of bailey beam support is laid to old bridge top, its characterized in that includes:
The temporary support structure comprises a bridge head beam support, wherein the bridge head beam support is arranged on the abutment back of the abutment or the bridge head butt strap;
The temporary main beam is a Bailey beam and is arranged above the old bridge, and the end part of the temporary main beam is arranged on a bridge head beam support;
the temporary bridge deck structure is arranged on the temporary main girder;
The temporary supporting structure comprises a beam supporting structure, a mounting hole is formed in a bridge deck at the bridge pier, the mounting hole penetrates through the bridge deck, the lower end of the beam supporting structure penetrates through the mounting hole to be supported on an old bridge pier, and the temporary main beam is arranged on the beam supporting structure.
2. The traffic flow control device for laying beret beam brackets above an old bridge according to claim 1, wherein the height distance of the bottom of the temporary main beam above the deck of the old bridge is 20-50cm.
3. The traffic flow-keeping device for paving beret beam brackets above an old bridge according to claim 1, wherein bridge head temporary slope adjusting devices are arranged on bridge head butt straps at two ends of the bridge, and the bridge head temporary slope adjusting devices are of wedge structures.
4. The traffic flow protection device for paving the bailey beam brackets above the old bridge according to claim 3, wherein the longitudinal bridge gradient of the temporary bridge head slope adjustment device is less than or equal to 10 percent, and the height of the wedge-shaped section is 0-20cm.
5. The traffic-keeping device for laying beret beam brackets over old bridges according to claim 1, wherein the temporary deck structure comprises at least temporary transverse distribution beams disposed on the lower flanges of the temporary main beams.
6. The traffic-keeping device for laying beret beam brackets over old bridges according to claim 5, wherein the temporary deck structure further comprises bridge decks disposed on the temporary lateral distribution beams when the spacing of the temporary lateral distribution beams is equal to or greater than 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322344667.0U CN221193027U (en) | 2023-08-30 | 2023-08-30 | Traffic flow guaranteeing device for paving Bailey beam support above old bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322344667.0U CN221193027U (en) | 2023-08-30 | 2023-08-30 | Traffic flow guaranteeing device for paving Bailey beam support above old bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221193027U true CN221193027U (en) | 2024-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322344667.0U Active CN221193027U (en) | 2023-08-30 | 2023-08-30 | Traffic flow guaranteeing device for paving Bailey beam support above old bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221193027U (en) |
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2023
- 2023-08-30 CN CN202322344667.0U patent/CN221193027U/en active Active
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