CN117738099A - Bridge superstructure self-adaptive temporary reinforcement tool and process - Google Patents
Bridge superstructure self-adaptive temporary reinforcement tool and process Download PDFInfo
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- CN117738099A CN117738099A CN202311768738.8A CN202311768738A CN117738099A CN 117738099 A CN117738099 A CN 117738099A CN 202311768738 A CN202311768738 A CN 202311768738A CN 117738099 A CN117738099 A CN 117738099A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000002787 reinforcement Effects 0.000 title claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000009434 installation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 230000035882 stress Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The invention relates to a self-adaptive temporary reinforcing tool and a self-adaptive temporary reinforcing process for a bridge superstructure, wherein an adjusting part consists of a pressure sensor, an information collecting end and a jack; the supporting structure consists of profile steel and a steel pipe, a pressure sensor is arranged on the jack in the adjusting part, and the lifting height of the jack is controlled by the output data of the pressure sensor, so that the tool is tightly attached to the beam bottom and self-adaption is realized; the jack of the adjusting part is fixed on the profile steel distribution beam of the supporting part to ensure the integral stability of the tool. The specific process is that the pressure sensor outputs pressure electronic data to the information collecting end, and the information collecting end transmits signals to the jack. The foundation is enlarged in the supporting part to improve the overall rigidity, and meanwhile, the disturbance of the tool on the ground is reduced; the bottom end of the steel pipe is embedded into the expansion foundation, and the steel pipe plays a main supporting role; the profile steel at the upper end is used as a distribution beam to bear load equally in the direction parallel to the support structure; the section steel at the lower end is used as a transverse strut and an inclined strut.
Description
Technical Field
The invention relates to a temporary reinforcing tool and a temporary reinforcing process for a bridge superstructure, in particular to a temporary reinforcing tool and a temporary reinforcing process for a superstructure, which are suitable for the period of reconstruction of a new bridge and an old bridge, wherein the old bridge still needs to realize the traffic function of the new bridge and are required to be temporarily reinforced under the condition of not damaging the existing bridge structure and traffic.
Background
The river-along channel project is an existing bridge reconstruction and expansion project, the surrounding environment is complex, the traffic flow is large, and the existing traffic passing function of an old bridge needs to be ensured before the construction of a newly built bridge is completed to realize the turning. The old bridge is used as one of important routes of freight transportation in the precious mountain area, and the upper structure of the old bridge causes larger mid-span deflection due to aging and long-term overload delivery. Under the construction environment and working condition, what kind of temporary measures can ensure that the existing bridge structure is not damaged, and meanwhile, continuous construction can be realized, so that the method becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of how to realize reinforcement of an existing bridge superstructure under the condition that the existing bridge superstructure is not damaged by the existing traffic, and provides a bridge superstructure self-adaptive temporary reinforcement tool and a process.
The technical scheme of the invention is as follows: the self-adaptive temporary reinforcing tool for the bridge upper structure comprises an adjusting part and a supporting part, wherein the adjusting part is an upper self-adaptive adjusting device; the supporting part is a lower stress and supporting structure, and the adjusting part consists of a pressure sensor, an information collecting end and a jack; the supporting structure consists of profile steel and a steel pipe, a pressure sensor is arranged on the jack in the adjusting part, and the lifting height of the jack is controlled by the output data of the pressure sensor, so that the tool is tightly attached to the beam bottom and self-adaption is realized; the jack of the adjusting part is fixed on the profile steel distribution beam of the supporting part to ensure the integral stability of the tool.
The self-adaptive temporary reinforcement process for the bridge upper structure adopts a self-adaptive temporary reinforcement tool for the bridge upper structure, and comprises the following steps:
1) Firstly, installing a construction supporting part, arranging an enlarged foundation at a projection position of an upper structure to be reinforced on the ground under a bridge, and arranging a steel pipe embedded part in the enlarged foundation;
2) The transverse bridge is provided with a supporting steel pipe, and the upper end of the steel pipe is reserved with a distributing beam and the position of an adjusting part;
3) The middle lower part of the steel pipe is provided with diagonal bracing section steel to strengthen vertical support;
4) A transverse support section steel is arranged at the middle lower part of the steel pipe, and a transverse bridge is connected to the adjacent steel pipes to strengthen transverse connection;
5) The upper end of the steel pipe is provided with a profile steel as a distribution beam, and a stiffening rib is arranged on the profile steel at the position of a preset jack to finish the installation of the supporting part;
6) Installing an adjusting part on the finished supporting part, arranging a jack on a distribution beam at the uppermost end of the supporting part, and arranging a center line position of the jack to be opposite to a hinge joint position of a superstructure of the jack;
7) Placing a pressure sensor on the jack for feeding back and monitoring the supporting force;
8) Debugging the pressure sensor and the jack to finish the installation of the adjusting part;
9) And opening the pressure sensor and the jack, and lifting the jack up until the pressure sensor is attached to the beam bottom, wherein the lifting degree of the jack is controlled by pressure information output by the pressure sensor, so that self-adaptive reinforcement is completed.
The beneficial results of the invention are:
according to the self-adaptive reinforcement tool formed by tools such as the pressure sensor, the jack, the steel pipe, the section steel and the like and materials, the midspan deflection of the existing bridge can be reduced in a short period, the upper structure is temporarily reinforced, the continuous passing bearing capacity requirement of the bridge is met, and the construction period can be effectively shortened on the premise that the safety and quality requirements are met. Meanwhile, the device is simple and convenient to operate and control, can be suitable for most municipal overhead bridges, and has certain popularity and universality.
Drawings
FIG. 1 is a longitudinal bridge layout of the tooling of the present invention;
FIG. 2 is a cross-bridge layout of the tooling of the present invention;
fig. 3 is a top view of the tooling of the present invention.
Detailed Description
Embodiments of the present invention are further described below in conjunction with specific examples. It should be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The invention aims to solve the technical problem of how to realize reinforcement of an existing bridge superstructure under the condition that the existing bridge superstructure is not damaged by the existing traffic, and provides a self-adaptive temporary bridge superstructure reinforcement tool and a process.
As shown in fig. 1 to 3, the embodiment of the invention provides a self-adaptive temporary reinforcement tool for an existing bridge superstructure, which comprises a pressure sensor 1, a jack 2, section steel, a steel pipe 6 and an enlarged foundation 7. The upper part is an adaptive adjusting device, which is called an adjusting part; the lower part is a main stress and support structure, called a support part. The adjusting part consists of a pressure sensor 1, an information collecting end and a jack 2; the support structure consists of section steel and steel pipes 6.
The jack 2 of the adjusting part is fixed on the profile steel distribution beam 3 of the supporting part to ensure the integral stability of the tool.
The pressure sensor 1 is placed on the jack 2 in the adjusting part, and the lifting height of the jack 2 is controlled by the output data of the pressure sensor 1, so that the tool is tightly attached to the beam bottom and self-adaption is realized. The specific process is that the pressure sensor 1 outputs pressure electronic data to an information collecting end, and the information collecting end transmits signals to the jack 2.
The foundation 7 is enlarged in the supporting part to improve the overall rigidity, and meanwhile, the disturbance of the tool on the ground is reduced; the bottom end of the steel pipe is embedded into the expansion foundation, and the steel pipe 6 plays a main supporting role; the profile steel at the upper end is used as a distribution beam 3 to bear load equally in the direction parallel to the support structure; the section steel at the lower end is used as a transverse strut and an inclined strut.
As shown in FIG. 1, the tooling is arranged at the midspan position of the existing bridge, so that the flexibility of the midspan and the whole bridge can be effectively reduced, the stability of the upper structure of the bridge is improved, and the specific setting steps are as follows:
(1) Support part of installation tool
(1) An enlarged foundation 7 is made on the ground which has hardened under the bridge. And the area and thickness of the enlarged foundation are determined according to the information such as the bridge deck width of the reinforced bridge and the like. In the example shown in fig. 2, the foundation is enlarged, the size is 15660mm multiplied by 4000mm multiplied by 500mm, concrete pouring is adopted, a single-layer reinforcing steel bar cushion layer is arranged below, and a steel pipe embedded part is arranged inside;
(2) the support steel pipe 6 is installed on the basis of expansion. The number and the types of the steel pipes 6 are determined according to the information of beam weight, beam clearance and the like. In the example, 6 phi 609 x 11 steel pipes were selected as the main support according to the calculation.
(3) And a diagonal brace and a transverse brace 5I-steel are arranged on the support steel pipe 6. As shown in fig. 1 and 2, is installed at a position about half the length of the steel pipe 6. The diagonal bracing adopts double-spliced 25I-steel, and the other end of the diagonal bracing is supported on an enlarged basis to strengthen vertical support. The cross brace 5 adopts double-spliced 25I-steel, connects the cross bridge to adjacent steel pipes, and strengthens the transverse connection.
(4) Double-spliced H588 multiplied by 300 multiplied by 12 multiplied by 20 is arranged at the upper end of the support steel pipe 6 as a distribution beam 3, and stiffening ribs are arranged on the section steel at the preset jack positions, as shown in figures 1 and 2.
(2) Adjusting part of installation tool
(1) The adjustment part is mounted on the finished support part (5-7). A jack 2 is provided on the distribution beam 3, as shown in fig. 1, 2 and 3. The model, the number and the arrangement of the jacks 2 are determined according to the information such as the number and the weight of the beams. In the example, 16 jack jacks with 50t bearing capacity are selected.
(2) A pressure sensor 1 is placed on the jack 2 as shown in fig. 1, 2 and 3. For feedback and monitoring of the supporting force. The pressure sensor 1 is debugged, and the installation of the adjusting part is completed.
(3) Completing self-adaptive reinforcement
And opening the pressure sensor 1 and the jack 2, and lifting the jack 2 upwards until the pressure sensor is attached to the beam bottom, wherein the lifting degree of the jack 2 is controlled by pressure information output by the pressure sensor 1, so that self-adaptive reinforcement is completed.
Claims (2)
1. Bridge superstructure self-adaptation consolidates frock temporarily, its characterized in that: comprises an adjusting part and a supporting part, wherein the adjusting part is an upper self-adaptive adjusting device; the supporting part is a lower stress and supporting structure, and the adjusting part consists of a pressure sensor, an information collecting end and a jack; the supporting structure consists of profile steel and a steel pipe, a pressure sensor is arranged on the jack in the adjusting part, and the lifting height of the jack is controlled by the output data of the pressure sensor, so that the tool is tightly attached to the beam bottom and self-adaption is realized; the jack of the adjusting part is fixed on the profile steel distribution beam of the supporting part to ensure the integral stability of the tool.
2. The self-adaptive temporary reinforcement process for the bridge superstructure, which adopts the self-adaptive temporary reinforcement tooling for the bridge superstructure according to claim 1, is characterized by comprising the following steps:
1) Firstly, installing a construction supporting part, arranging an enlarged foundation at a projection position of an upper structure to be reinforced on the ground under a bridge, and arranging a steel pipe embedded part in the enlarged foundation;
2) The transverse bridge is provided with a supporting steel pipe, and the upper end of the steel pipe is reserved with a distributing beam and the position of an adjusting part;
3) The middle lower part of the steel pipe is provided with diagonal bracing section steel to strengthen vertical support;
4) A transverse support section steel is arranged at the middle lower part of the steel pipe, and a transverse bridge is connected to the adjacent steel pipes to strengthen transverse connection;
5) The upper end of the steel pipe is provided with a profile steel as a distribution beam, and a stiffening rib is arranged on the profile steel at the position of a preset jack to finish the installation of the supporting part;
6) Installing an adjusting part on the finished supporting part, arranging a jack on a distribution beam at the uppermost end of the supporting part, and arranging a center line position of the jack to be opposite to a hinge joint position of a superstructure of the jack;
7) Placing a pressure sensor on the jack for feeding back and monitoring the supporting force;
8) Debugging the pressure sensor and the jack to finish the installation of the adjusting part;
9) And opening the pressure sensor and the jack, and lifting the jack up until the pressure sensor is attached to the beam bottom, wherein the lifting degree of the jack is controlled by pressure information output by the pressure sensor, so that self-adaptive reinforcement is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311768738.8A CN117738099A (en) | 2023-12-20 | 2023-12-20 | Bridge superstructure self-adaptive temporary reinforcement tool and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311768738.8A CN117738099A (en) | 2023-12-20 | 2023-12-20 | Bridge superstructure self-adaptive temporary reinforcement tool and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117738099A true CN117738099A (en) | 2024-03-22 |
Family
ID=90256152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311768738.8A Pending CN117738099A (en) | 2023-12-20 | 2023-12-20 | Bridge superstructure self-adaptive temporary reinforcement tool and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117738099A (en) |
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2023
- 2023-12-20 CN CN202311768738.8A patent/CN117738099A/en active Pending
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