CN115852767B - Structure and method for rapidly treating differential settlement of bridge head - Google Patents
Structure and method for rapidly treating differential settlement of bridge head Download PDFInfo
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- CN115852767B CN115852767B CN202211579373.XA CN202211579373A CN115852767B CN 115852767 B CN115852767 B CN 115852767B CN 202211579373 A CN202211579373 A CN 202211579373A CN 115852767 B CN115852767 B CN 115852767B
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- Prior art keywords
- grouting
- roadbed
- geogrid
- bridge head
- steel pipe
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 239000002689 soil Substances 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 238000007569 slipcasting Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a structure and a method for rapidly treating uneven settlement of a bridge head, which are characterized in that a geogrid, a frame, hollow steel pipes, copper rods, heating wires, copper rods, a humidity sensor and a data line are embedded in the bridge head during construction of the bridge head structure, when uneven settlement of a road surface occurs in the bridge head after operation, a grouting pipe is arranged at the hollow steel pipes on one side of a roadbed, a grouting machine is connected, the other side of the grouting pipe is connected with an electric wire and connected with a generator, the generator is started, the humidity change is monitored, the height of the existing roadbed is observed through a scale, the height to be lifted is estimated, the steel pipes are heated and expanded by the heating wires, the soil around the steel pipes is expanded when being heated, meanwhile, grouting is carried out to enable the soil in the roadbed to be integrally lifted, the humidity sensor is monitored to prevent leakage, a channel on the lower part of the geogrid enables slurry to flow horizontally, the roadbed is evenly filled, and the integral lifting is realized. The invention can improve the strength of the road bed at the bridge head, recover deformation to a certain extent, and rapidly solve the problem of uneven settlement at the bridge head under the condition of not influencing traffic.
Description
Technical Field
The invention relates to the technical field of engineering foundations, in particular to a structure and a method for rapidly treating uneven settlement of bridge heads.
Background
The immediate cause of the uneven settlement phenomenon of the bridge head is caused by the obvious differential settlement of the rigid bridge abutment and the flexible embankment caused by the large difference of the rigidity under the action of load. The bridge head roadbed filler usually contains moisture and has pores, the compaction measures adopted in the construction process cannot completely eliminate the pores among filler particles under the action of the dead weight and the vehicle load, the filler gradually compacts, the porosity gradually decreases, the filler is compressed, and compression deformation is generated in a certain period.
The structure for rapidly treating uneven settlement of the bridge head is used for solving the problem of uneven settlement of the bridge head roadbed after construction. However, the current phenomenon of uneven settlement of bridge heads is common, and under severe conditions, the phenomenon is generally treated by jet grouting piles, so that traffic needs to be blocked, and the cost is high.
Disclosure of Invention
Aiming at the problems, the invention provides a structure and a method for rapidly treating uneven settlement of the bridge head, which can improve the roadbed strength of the bridge head, recover deformation to a certain extent and rapidly solve the problem of uneven settlement of the bridge head under the condition of not influencing traffic.
A structure for rapidly treating differential settlement of a bridgehead, comprising: bridge approach, pier, geogrid, frame, cavity steel pipe, bar copper, heating wire, wherein:
The frame is formed by crisscross combination of a cross rod and a vertical rod and is used for fixing the hollow steel pipe;
the surface of the hollow steel pipe is provided with a circular hole, a steel sheet is covered on the hole, one end of the steel sheet is fixed, the other end of the steel sheet can be opened and closed, the diameter of the steel sheet is larger than that of the hole, so that soil cannot enter the steel pipe when grouting is not performed, and the steel sheet is opened to inject soil under the action of pressure during grouting;
The electric wires are uniformly distributed on the inner side of the hollow steel pipe in a net-shaped manner, the middle of each electric wire is connected through a copper rod, one end of each copper rod is communicated with the electric wire, the electric wires are powered by a generator, the grouting pipe is communicated with one end of the hollow steel pipe, and grouting is performed by a grouting machine;
The geogrid is positioned in the roadbed, is horizontally arranged, and is concave in the lower part and communicated with the roadbed, and is used for dredging grouting bodies to realize uniform grouting.
Further, the humidity sensor is arranged on the upper portion of the geogrid, and the vertical humidity change condition is monitored at the top of the roadbed so as to prevent slurry from overflowing out of the road surface.
Further, the scale is arranged on one side of the roadbed and is perpendicular to the ground, and the scale is used for measuring the lifting deformation of the surface of the roadbed.
A method for rapidly treating differential settlement of bridge heads comprises the following steps:
the bridge head structure is buried into cavity steel pipe, the steel sheet, the heating wire, the bar copper, the electric wire, humidity transducer, data line and geogrid, when the uneven subsidence in road surface appears in the operation rear axle head, the slip casting pipe is installed in cavity steel pipe department on one side of the road bed, and connect the slip casting machine, the opposite side connecting wire meets with the generator, start simultaneously and gather the box, monitor humidity change, through the scale, observe current road bed height, estimate the height that needs the lifting, steel pipe heating expansion after the heating wire heating, the soil body meets thermal expansion around the steel pipe, slip casting makes the inside soil body whole lifting of road bed simultaneously, humidity transducer monitors and prevents the leakage thick liquid, geogrid lower part passageway makes thick liquid horizontal flow, evenly fill the road bed inside, realize whole lifting.
The invention has the following beneficial technical effects:
1) Circular holes are uniformly distributed on the surface of the hollow steel pipe, the diameters of the holes are smaller, steel sheets are covered on the holes, one section of the holes are welded, the other ends of the holes are freely placed, the diameters of the steel sheets are larger than those of the holes, and therefore the soil cannot enter the steel pipe when grouting is not performed, and the steel sheets are opened under the action of pressure to be injected into the soil when grouting is performed;
2) The geogrid is positioned in the roadbed, is horizontally arranged, and the lower parts of the geogrid are concave and communicated and are used for dredging grouting bodies to realize uniform grouting;
3) After the heating wire is heated, the steel pipe is heated and expanded, the soil body around the steel pipe is expanded when being heated, and meanwhile, the soil body inside the roadbed can be lifted integrally by grouting.
Drawings
FIG. 1 is a schematic view of a structure for rapidly treating differential settlement of a bridge head, in which:
The device comprises a bridge approach 1, a bridge pier 2, a geogrid 3, a 4-humidity sensor, a 5-frame, a 6-data line, a 7-hollow steel pipe, an 8-scale, a 9-copper bar, a 10-grouting machine, an 11-grouting pipe, a 12-external electric wire, a 13-electric heating wire, a 14-electric wire and a 15-generator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Examples
A structure for rapidly treating differential settlement of a bridgehead, comprising: bridge approach 1, bridge pier 2, geogrid 3, frame 5, hollow steel pipe 7, bar copper 9, heating wire 13.
The frame 5 is formed by crisscross combination of cross bars and vertical bars and is used for fixing the hollow steel pipes.
Circular holes are distributed on the surface of the hollow steel pipe 7, steel sheets are covered on the holes, one ends of the steel sheets are fixed, the other ends of the steel sheets are openable and closable, and the diameter of the steel sheets is larger than that of the holes, so that soil cannot enter the steel pipe when grouting is not performed, and the steel sheets are opened under the action of pressure to inject the soil during grouting.
The electric heating wires 13 are uniformly distributed on the inner side of the hollow steel tube 7 in a net-shaped manner, the middle of the electric heating wires 13 is connected through a copper rod 9, one end of the copper rod 9 is communicated with an electric wire, power is supplied through a generator 15, the grouting pipe 11 is communicated with one end of the hollow steel tube 7, and grouting is performed through a grouting machine 10.
The geogrid 3 is positioned in the roadbed, is horizontally arranged, and the lower parts of the geogrid are concave and communicated and are used for dredging grouting bodies so as to realize uniform grouting.
The humidity sensor 4 is arranged on the upper part of the geogrid, and monitors the vertical humidity change condition at the top of the roadbed so as to prevent slurry from overflowing out of the road surface.
The scale 8 is perpendicular to the ground and is arranged on one side of the roadbed and used for measuring the lifting deformation of the surface of the roadbed.
A method for rapidly treating differential settlement of bridge heads comprises the following steps:
The bridge head structure is buried into cavity steel pipe 7, the steel sheet, heating wire 13, bar copper 9, electric wire 14, scale 8, humidity transducer 4, data line 6 and geogrid 3, when the uneven subsidence of road surface appears in the operation rear axle head, the slip casting pipe 11 is installed in cavity steel pipe department in road bed one side, and connect grouting machine 10, the opposite side connecting wire 14 is connected with generator 15, start the generator, start simultaneously and gather the box, monitor humidity change, through the scale, survey current road bed height, estimate the height that needs the lifting, steel pipe heating expansion after heating wire 13 heats, the soil body is thermal expansion around the steel pipe, slip casting makes the inside soil body whole lifting of road bed simultaneously, humidity transducer 4 monitors and prevents the leakage thick liquid, geogrid 3 lower part passageway makes the thick liquid horizontal flow, evenly fill inside the road bed, realize whole lifting.
While the present invention has been described in detail with reference to the embodiments, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the present invention shall also be considered as the scope of the present invention.
Claims (4)
1. A structure for rapidly treating differential settlement of a bridgehead, comprising: bridge approach, pier, geogrid, frame, cavity steel pipe, bar copper and heating wire, its characterized in that:
The frame is formed by crisscross combination of a cross rod and a vertical rod and is used for fixing the hollow steel pipe;
the surface of the hollow steel pipe is provided with a circular hole, a steel sheet is covered on the hole, one end of the steel sheet is fixed, the other end of the steel sheet can be opened and closed, the diameter of the steel sheet is larger than that of the hole, so that soil cannot enter the steel pipe when grouting is not performed, and the steel sheet is opened to inject soil under the action of pressure during grouting;
the electric heating wires are uniformly distributed on the inner side of the hollow steel pipe in a net shape, the middle of the electric heating wires are connected through copper bars, one ends of the copper bars are communicated with the electric wires, power is supplied through a generator, the grouting pipe is communicated with one end of the hollow steel pipe, and grouting is performed through a grouting machine;
The geogrid is positioned in the roadbed, is horizontally arranged, and is concave in the lower part and communicated with the roadbed, and is used for dredging grouting bodies to realize uniform grouting.
2. The structure for rapidly disposing of differential settlement of bridge heads according to claim 1, wherein: the humidity sensor is arranged on the upper part of the geogrid, and the vertical humidity change condition is monitored at the top of the roadbed so as to prevent slurry from overflowing out of the road surface.
3. The structure for rapidly disposing of uneven settlement of a bridgehead according to claim 2, wherein: the scale is arranged on one side of the roadbed and is perpendicular to the ground, and the scale is used for measuring the lifting deformation of the surface of the roadbed.
4. A method for rapidly treating uneven settlement of bridge heads is characterized by comprising the following steps: the structure in claim 2 is formed by embedding geogrid, frame, hollow steel tube, copper bar, heating wire, copper bar, humidity transducer, data line during construction of bridge head structure, when the uneven subsidence of road surface appears in the operation rear axle head, install the slip casting pipe in the hollow steel tube department of road bed one side, and connect the slip casting machine, the opposite side connecting wire meets with the generator, start humidity transducer simultaneously, monitor humidity variation, set up the scale in road bed one side, perpendicular to ground, through the scale, survey current road bed height, predict the height that needs the lifting, steel tube heating expansion after the heating wire heats, the soil body is met thermal expansion around the steel tube, slip casting makes the inside soil body whole lifting of road bed simultaneously, humidity transducer monitors and prevents the leakage thick liquid, geogrid lower part passageway makes thick liquid horizontal flow, evenly fill the inside the road bed, realize whole lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211579373.XA CN115852767B (en) | 2022-12-08 | 2022-12-08 | Structure and method for rapidly treating differential settlement of bridge head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211579373.XA CN115852767B (en) | 2022-12-08 | 2022-12-08 | Structure and method for rapidly treating differential settlement of bridge head |
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| Publication Number | Publication Date |
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| CN115852767A CN115852767A (en) | 2023-03-28 |
| CN115852767B true CN115852767B (en) | 2024-08-23 |
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| CN202211579373.XA Active CN115852767B (en) | 2022-12-08 | 2022-12-08 | Structure and method for rapidly treating differential settlement of bridge head |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485230A (en) * | 2019-09-17 | 2019-11-22 | 招商局重庆交通科研设计院有限公司 | A kind for the treatment of structures and construction method of high water level weak soil Bridgehead by Blastig |
| CN110485316A (en) * | 2019-08-27 | 2019-11-22 | 山东交通学院 | A kind of method of multiple slip casting to administer bumping at bridge-head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2906019C (en) * | 2013-03-15 | 2021-07-13 | William B. Coe | Pavement repair system |
| JP7107665B2 (en) * | 2017-11-17 | 2022-07-27 | 公益財団法人鉄道総合技術研究所 | Roadbed improvement method |
| KR102106034B1 (en) * | 2019-08-16 | 2020-04-29 | 주식회사 다올엔지니어링 | Multistage steel pipe grouting method for tunnel construction |
| CN113136788B (en) * | 2021-04-14 | 2022-08-19 | 殷绍斌 | Bridgehead structure capable of reducing incidence of bridgehead bumping and construction and maintenance method |
| CN114134763A (en) * | 2021-11-30 | 2022-03-04 | 中铁第四勘察设计院集团有限公司 | Short-circuit foundation structure of embankment and construction method thereof |
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- 2022-12-08 CN CN202211579373.XA patent/CN115852767B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485316A (en) * | 2019-08-27 | 2019-11-22 | 山东交通学院 | A kind of method of multiple slip casting to administer bumping at bridge-head |
| CN110485230A (en) * | 2019-09-17 | 2019-11-22 | 招商局重庆交通科研设计院有限公司 | A kind for the treatment of structures and construction method of high water level weak soil Bridgehead by Blastig |
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| CN115852767A (en) | 2023-03-28 |
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