CN113699890A - Automatic compensation method for temporary support elevation for bridge prefabricated assembly component - Google Patents
Automatic compensation method for temporary support elevation for bridge prefabricated assembly component Download PDFInfo
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- CN113699890A CN113699890A CN202110993055.7A CN202110993055A CN113699890A CN 113699890 A CN113699890 A CN 113699890A CN 202110993055 A CN202110993055 A CN 202110993055A CN 113699890 A CN113699890 A CN 113699890A
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- elevation
- hydraulic jack
- compensation method
- assembly component
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 10
- 238000004062 sedimentation Methods 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an automatic compensation method for temporary support elevation for bridge prefabricated assembly components, which adopts an automatic compensation device consisting of a support foundation, a support, a hydraulic jack, a hydraulic control box, a reference frame, a displacement sensor and an intelligent static load test analyzer The hydraulic jack sends out an instruction to automatically compensate the settlement.
Description
Technical Field
The invention relates to the field of overhead and bridge erection engineering, in particular to an automatic elevation compensation method for a temporary support for a bridge prefabricated assembly component.
Background
With the continuous improvement and development of the traffic network in China, the bridge engineering construction project becomes the mainstream project in the engineering field in recent years. The use of prefabricated assembly components is a preferred process of highway bridges, the concrete prefabricated capping beams are overweight overlength components, the requirements on prefabricated fields, component hoisting equipment and municipal road transportation of the components are too high, and the segmented prefabrication and segmented installation become a preferred process for solving the overweight overlength components. The sectional prefabricated sectional installation has higher requirements on a temporary support on site, wet joint reinforcing steel bars are bound after sectional components are installed on the temporary support, a specially-assigned person is arranged to retest the elevation of the sectional components every day, a jack is adopted to manually jack up the components to carry out corresponding copying and padding after the sedimentation amount exceeds the allowable sedimentation amount, sedimentation is observed for several days continuously after the copying and padding is finished, and a side mold is installed and concrete is poured after the support sedimentation is stable.
The conventional prefabricated part wet joint is long in elastic deformation duration time of a support and inelastic deformation duration time of a foundation, multiple times of adjustment are often needed, the construction progress is influenced due to complex work, sedimentation can be formed after the copying and the padding is finished, the quality of the member wet joint is influenced, most of copying and padding work is performed at high altitude, after wet joint concrete reaches the design requirement and tensioning is finished, when the conventional support is dismantled, profile steel of the copying and padding at the top of the support is cut off by gas cutting, the support dismantling work is complex, the material loss is large, and the safety risk is high.
Disclosure of Invention
The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component aims to overcome the defects of long cost period, high labor force and material loss, low construction precision, high safety risk and the like in the conventional support installation, elevation adjustment and dismantling processes of the prefabricated component.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for automatically compensating the elevation of a temporary support for prefabricated bridge assembly members includes such steps as installing a hydraulic jack to the temporary support, installing a displacement sensor at the side of ground support, connecting oil pipe to hydraulic jack, regulating the elevation of hydraulic jack to designed elevation, installing intelligent static load test analyzer, connecting automatic hydraulic box and displacement sensor, connecting power supply, installing prefabricated members to the support, measuring the elevation of prefabricated members, regulating the prefabricated members to designed elevation by hydraulic jack, zeroing intelligent static load test analyzer, and controlling the settlement of prefabricated members and support by displacement sensor The box and the hydraulic jack send out instructions to automatically compensate the settlement.
Furthermore, a reference frame is arranged on the periphery of the support, the displacement sensor is fixed on the support, and the pointer head is tightly attached to the reference frame.
Furthermore, the benchmark frame adopts the frame that comprises 4 at least pole settings and 4 horizontal poles, and the pole setting is beaten and is established around temporary stand as required to have certain distance with temporary stand.
Further, the support foundation is in a reinforced concrete cast-in-place form or a roadbed box plate form, the bearing capacity needs to be determined according to calculation, and the support bearing capacity value needs to be rechecked before the support foundation is installed.
Further, the support adopts the crane installation, and support foundation guarantee firm in connection, and the contact surface is closely knit, and super high support need do and prevent the toppling measure, and the support should violently be flat vertical, guarantees that the atress is unified, and support specification model need carry out corresponding calculation according to prefabricated component weight and reachs, and the support needs to possess the measure that the different heights of segmentation concatenation used.
Furthermore, an expansion plate is arranged at the top of the jacking rod of the hydraulic jack, and the bottom of the hydraulic jack is fixed with the section steel.
Furthermore, at least 4 bolt holes are formed in the section steel at the bottom of the hydraulic jack, and the section steel is fixed with the section steel cross beam through the 4 bolt holes or is connected with the section steel cross beam in a welding mode.
Furthermore, the model selection of the hydraulic jack needs to be calculated according to the counterforce value of the lower support of the prefabricated part, and the safety coefficient of the jack specification needs to be considered.
The invention has the beneficial effects that:
the invention provides a method for automatically compensating the settlement (elevation) by sending instructions to a hydraulic control box and a jack through an intelligent static load test analyzer through a sensor according to the settlement of a prefabricated part and a support, and the method has important significance for the installation of the prefabricated part. The method effectively accelerates the connection speed of the segmented prefabricated parts, saves the time for adjusting the elevation of the prefabricated parts midway, greatly improves the installation precision of the prefabricated parts, can quickly finish the connection and fixation of the segmented prefabricated parts, can use all equipment such as a hydraulic jack for multiple times, avoids the problem of cutting off the support by gas cutting in the process of removing the support, greatly saves the engineering input cost, saves the procedures of adjusting and measuring the support and the capping beam midway, and saves labor force. Has higher economic and social benefits and is worth popularizing and using in similar projects.
Drawings
FIG. 1 is a schematic diagram of a temporary support elevation compensation method;
FIG. 2 is a diagram showing the relationship between the elevation compensation method of the temporary stand and the vertical column and the bent cap;
fig. 3 is a schematic view of a special jack.
Detailed Description
The conception, the operation flow and the specific effects of the patent of the present invention will be fully and clearly described below by combining the embodiments and the accompanying drawings, and the specific implementation method is as follows:
as shown in fig. 1 and 2: the method comprises the following steps that before the sectional prefabricated part is hoisted, the support foundation 1 is processed and reinforced, and before the support 2 is installed, the bearing capacity of the support foundation 1 is rechecked;
as shown in fig. 1 and 2: the height of the required support 2 is measured after the support foundation 1 is processed, the support 2 with the corresponding specification is equipped according to the bearing capacity calculation data, the hydraulic jack 3 which is prepared in advance is installed on the top of the support 2 and is firmly fixed after the support 2 enters the field, all oil pipe interfaces face the periphery, and the hydraulic oil pipe 4 is convenient to install and remove in the later period.
As shown in fig. 1 and 2: after the hydraulic jack 3 on the support top is installed, the support 2 is lifted and installed by a crane, the support 2 and an embedded part on the support foundation 1 are firmly fixed, and anti-overturning measures are required to be installed under special conditions; a reference frame 5 is arranged around the support 2, a displacement sensor 6 is fixed on the support 2, and a pointer head is tightly attached to the reference frame 5; installing a hydraulic oil pipe 4 and an automatic hydraulic tank of a jack, and checking the compactness of a joint of the hydraulic oil pipe 4; and installing an intelligent static load test analyzer, connecting a 220V power supply, and connecting the displacement sensor 6 and the automatic hydraulic tank with the intelligent static load test analyzer respectively.
As shown in fig. 1 and 2: and after all the equipment is installed, the intelligent static load test analyzer is electrified, the elevation of the top of the support is measured, and the extending length of the top pickaxe of the hydraulic jack 3 is manually adjusted through the hydraulic tank.
As shown in fig. 1 and 2: and mounting the prefabricated part 7 on the support top, retesting the elevation of the prefabricated part 7, pressurizing and adjusting the prefabricated part 7 to the designed elevation through the hydraulic jack 3, and enabling the intelligent static load testing analyzer to return to zero and start to work. When the settlement with the support foundation 1 begins to settle, the displacement sensor 6 transmits the captured settlement data to the intelligent static load test analyzer, and the intelligent static load test analyzer sends instructions to the hydraulic control box and the hydraulic jack 3 to compensate the settlement (elevation).
As shown in fig. 1 and 2: after the intelligent compensation starts to work, the wet joint reinforcing steel bars, the templates and the concrete of the segmented prefabricated part 7 can be constructed. And when the support 2 dismantling condition is met, the pushing force of the hydraulic jack 3 is removed, the displacement sensor 6 is dismantled, all pipeline electric wires are disconnected, and the support 2 is separated.
As shown in fig. 3: the hydraulic jack 3 preferably selects a double-acting jack with a short stroke, the jacking force is calculated according to the weight of a prefabricated part 7, an expansion head 3-2 needs to be erected at the top end of a jacking pick 3-1 before the hydraulic jack 3 is used, the stress surface of the prefabricated part 7 can be enlarged, the bottom of the hydraulic jack 3 is fixed with the section steel (plate), and the fixing form can adopt that no less than 4 bolt holes are formed in the section steel 3-3 (plate) at the bottom of each hydraulic jack 3 to be fixed with a section steel cross beam 8, or the section steel cross beam 8 is welded with the section steel at the bottom of the hydraulic jack 3.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments and various changes can be made without departing from the spirit of the present invention.
Claims (8)
1. The automatic compensation method for the elevation of the temporary support for the bridge prefabricated assembly component is characterized by comprising the following steps of: the automatic compensation device for the elevation of the temporary support comprises a support base, a support, a hydraulic jack, a hydraulic control box, a reference frame, a displacement sensor, an intelligent dead load test analyzer and a 220V power supply, wherein the hydraulic jack is installed on the temporary support, the support is installed at a preset position, the displacement sensor is installed beside a ground support, the hydraulic jack is connected with an oil pipe, the elevation of the jack head of the hydraulic jack is adjusted to a designed elevation, the intelligent dead load test analyzer is installed and connected with the automatic hydraulic box and the displacement sensor and is connected with the power supply, then a prefabricated part is installed on the support and is measured for the elevation of the prefabricated part, the prefabricated part is pressurized and adjusted to the designed elevation through the hydraulic jack, the intelligent dead load test analyzer returns to zero and starts to work, and the intelligent dead load test analyzer sends the measured data to the hydraulic control box through the displacement sensor according to the settlement amount of the prefabricated part and the support, The hydraulic jack sends out an instruction to automatically compensate the settlement.
2. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: and a reference frame is arranged around the support, the displacement sensor is fixed on the support, and the pointer head is tightly attached to the reference frame.
3. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: the benchmark frame adopts the frame that comprises 4 at least pole settings and 4 horizontal poles, and the pole setting is beaten and is established around temporary stand as required to have certain distance with temporary stand.
4. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: the support foundation is in a reinforced concrete cast-in-place form or a roadbed box plate form, the bearing capacity needs to be determined according to calculation, and the support bearing capacity value needs to be rechecked before the support foundation is installed.
5. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: the support adopts the crane installation, and support foundation guarantee firm in connection, and the contact surface is closely knit, and super high support need do and prevent the toppling measure, and the support should be violently flat vertical, guarantees that the atress is unified, and support specification model need carry out corresponding calculation according to prefabricated component weight and reachs, and the support needs to possess the measure that the different heights of segmentation concatenation used.
6. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: the top of the jacking rod of the hydraulic jack is provided with an expansion plate, and the bottom of the hydraulic jack is fixed with the section steel.
7. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 6, wherein the method comprises the following steps: and the section steel at the bottom of the hydraulic jack is provided with at least 4 bolt holes and is fixed with the section steel cross beam through the 4 bolt holes or is welded with the section steel cross beam.
8. The automatic elevation compensation method for the temporary support for the bridge prefabricated assembly component according to claim 1, which is characterized in that: the model selection of the hydraulic jack needs to be calculated according to the counterforce value of the lower support of the prefabricated part, and the safety coefficient of the jack specification needs to be considered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993055.7A CN113699890A (en) | 2021-08-27 | 2021-08-27 | Automatic compensation method for temporary support elevation for bridge prefabricated assembly component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993055.7A CN113699890A (en) | 2021-08-27 | 2021-08-27 | Automatic compensation method for temporary support elevation for bridge prefabricated assembly component |
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| Publication Number | Publication Date |
|---|---|
| CN113699890A true CN113699890A (en) | 2021-11-26 |
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| CN202110993055.7A Pending CN113699890A (en) | 2021-08-27 | 2021-08-27 | Automatic compensation method for temporary support elevation for bridge prefabricated assembly component |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185519A (en) * | 2008-02-06 | 2009-08-20 | Ihi Corp | Bridge girder replacing method and apparatus |
| WO2010115350A1 (en) * | 2009-04-10 | 2010-10-14 | Yuan Bin | Main work construction method for reinforced concrete building and building construction machine |
| CN202247687U (en) * | 2011-09-19 | 2012-05-30 | 曹新恒 | Universal cast-in-situ trestle for bridge |
| CN104005342A (en) * | 2014-05-28 | 2014-08-27 | 北京市政建设集团有限责任公司 | Method and device for dynamic synchronous jacking compensation of bridge distortion |
| CN105735139A (en) * | 2016-04-14 | 2016-07-06 | 浙江大学城市学院 | Supporting system for construction of cast-in-situ box beam in overpass and construction method of box beam |
| CN205838437U (en) * | 2016-07-12 | 2016-12-28 | 福建省工业设备安装有限公司 | A kind of steel box girder segment absolute altitude automatic regulating apparatus |
-
2021
- 2021-08-27 CN CN202110993055.7A patent/CN113699890A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185519A (en) * | 2008-02-06 | 2009-08-20 | Ihi Corp | Bridge girder replacing method and apparatus |
| WO2010115350A1 (en) * | 2009-04-10 | 2010-10-14 | Yuan Bin | Main work construction method for reinforced concrete building and building construction machine |
| CN202247687U (en) * | 2011-09-19 | 2012-05-30 | 曹新恒 | Universal cast-in-situ trestle for bridge |
| CN104005342A (en) * | 2014-05-28 | 2014-08-27 | 北京市政建设集团有限责任公司 | Method and device for dynamic synchronous jacking compensation of bridge distortion |
| CN105735139A (en) * | 2016-04-14 | 2016-07-06 | 浙江大学城市学院 | Supporting system for construction of cast-in-situ box beam in overpass and construction method of box beam |
| CN205838437U (en) * | 2016-07-12 | 2016-12-28 | 福建省工业设备安装有限公司 | A kind of steel box girder segment absolute altitude automatic regulating apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 《中国建设科技文库》编辑委员会: "《中国建设科技文库 城乡建设卷1998》", 中国建材工业出版社 * |
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Application publication date: 20211126 |