CN114857432A - Reinforcing method for hydraulic test of liquid tank - Google Patents
Reinforcing method for hydraulic test of liquid tank Download PDFInfo
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- CN114857432A CN114857432A CN202210467740.0A CN202210467740A CN114857432A CN 114857432 A CN114857432 A CN 114857432A CN 202210467740 A CN202210467740 A CN 202210467740A CN 114857432 A CN114857432 A CN 114857432A
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- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004575 stone Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000002262 irrigation Effects 0.000 claims abstract description 4
- 238000003973 irrigation Methods 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 14
- 239000010426 asphalt Substances 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 26
- 238000013461 design Methods 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for reinforcing a hydraulic test of a liquid tank, which comprises the following steps: the method comprises the steps of support frame scheme determination, foundation reinforcement, datum point calibration, monitoring and water injection. The method for reinforcing the hydraulic test of the liquid tank adopts a sandwich device of steel plates, graded broken stones and steel plates, forms a support foundation into an effective integral structure, and uniformly transmits the stress on the upper surface to the bottom; when the bracket is arranged, the bottom surface of the bracket is designed into a larger supporting area, and when the bracket is arranged, two 40mm thick steel plates are arranged on the bottom surface of the bracket side by side, and the supporting width is expanded to 4 m; the accuracy of the line projector is not high, but the use is convenient. The advantage of rapid measurement of a line casting instrument is utilized, and the sedimentation trend is monitored in real time in the irrigation process; the total station has high measurement accuracy, and is erected at a characteristic time point to measure settlement and offset data of a reference point.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a reinforcing method for a hydraulic test of a liquid tank.
Background
2 2500m3 full-pressure liquid tanks are arranged on a 5000 cubic LPG transport ship, the design weight of each liquid tank is 450t, and a strength test needs to be carried out after the manufacture according to design requirements. Through multiple discussions, the full hydraulic strength test mode is finally determined. After being filled with water, the weight of the whole device is 3000t, 2 supporting cement bearing platforms of 1.2mx6m are arranged below each liquid tank according to the requirements of a manufacturing party in the early stage of manufacturing the liquid tanks, and each supporting platform is designed to bear 1000 t.
The manufacturing site of the liquid tank is that the sea surface is blown with sand and backfilled to the ground, the thickness of the backfilled sand layer is 4m, the foundation is not tamped, and the ground is a structure that an asphalt surface layer is poured on a cement-stabilized gravel layer base layer. Looking up the relevant data, the ground bearing capacity limit is 50Kpa, i.e. 5t/m 2 。
The support frame provided by manufacturer's Anshan Huaxin has a lower surface size of 1m 11m, and is arranged at 17.8m intervals, a support surface of 17.8mx11m, and a support area of 195.8m 2 Assuming that the supporting force is uniformly distributed, the foundation needs to provide 15.3t/m 2 The supporting force of (3).
The existing liquid tank has the following problems in the test;
design volume of single liquid tank of 5000 cubic LPG transport ship is 2500m 3 The design load is 3000t, and the design single tank weight is 450t, so that the self weight of the on-board loading liquid adding tank is 2000 t. In the early period of the project, the shipowner does not predict the use of the semi-hydraulic pressure strength test mode, and the full-hydraulic pressure load test mode is adopted. After the liquid tank is filled with water, the total weight is 3000t, and the existing supporting foundation can not meet the test requirements
We therefore propose an enhanced method for hydrostatic testing of a tank in order to solve the problems set out above.
Disclosure of Invention
The invention aims to provide a method for reinforcing a hydraulic test of a liquid tank, which aims to solve the problem that the existing supporting foundation provided by the background technology cannot meet the requirement of the hydraulic test of the liquid tank.
In order to achieve the purpose, the invention provides the following technical scheme: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged to share 3000t of force, a main support frame is arranged at the center of each of two packing belts, 4 transverse moving brackets are arranged in the middle of each packing belt to perform auxiliary support, and the bottom surfaces of the transverse moving brackets are 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground, the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled with graded broken stones, and then the bottom steel plate is laid. After the ground bottom steel plate is laid, a graded gravel layer is laid on the bottom steel plate, and 2 layers of steel plates are arranged between the support frame and the foundation reinforced upper surface steel plate to share the stress of the support seat in the range of 4m x 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; the support saddle sets five reference points P31, P32, P33, P34, P35, P36.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket.
Preferably, the size of the bottom surface of the scaffold in step (1) is 1m × 1 m.
Preferably, the size of the bottom surface of the traverse carriage in the step (1) is 1.4m by 6.4 m.
Preferably, the thickness of the steel plate in the step (2) is 20-30 mm.
Preferably, the steel plate laying area in the step (2) is 12m × 22.7 m.
Preferably, the gravel layer in the step (2) is laid in a quadrilateral diamond table structure, the height is 590mm, the upper surface ensures a plane of 12m × 22.7m, the slope of the inclined plane is 45 degrees, and after tamping, the upper pad is larger than a 20-30mm thick steel plate.
Preferably, in the step (3), before the irrigation is started, a horizontal line is projected on the saddle by a line projector, and the reference point is marked by an oily note number.
Preferably, in the step (3), except for the reference points of the track, the reflecting targets are attached.
Preferably, the lateral reference in step (3) is calibrated by using a line projector.
Compared with the prior art, the invention has the beneficial effects that: the reinforcing method for the hydraulic test of the liquid tank;
a sandwich device of a steel plate, graded broken stones and a steel plate is adopted to form an effective integral structure for the supporting foundation, and the stress on the upper surface is uniformly transferred to the bottom; when the bracket is arranged, the bottom surface of the bracket is designed into a larger supporting area, and when the bracket is arranged, two 40mm thick steel plates are arranged on the bottom surface of the bracket side by side, and the supporting width is expanded to 4 m; the accuracy of the line projector is not high, but the use is convenient. The advantage of rapid measurement of a line casting instrument is utilized, and the sedimentation trend is monitored in real time in the irrigation process; the total station has high measurement accuracy, and is erected at a characteristic time point to measure settlement and offset data of a reference point.
Drawings
FIG. 1 is a schematic structural diagram of a support frame for a hydraulic test reinforcing method of a liquid tank according to the present invention;
FIG. 2 is a schematic view of a foundation reinforcing structure for a hydraulic test reinforcing method of a liquid tank according to the present invention;
FIG. 3 is a schematic diagram of a first datum point of the method for reinforcing the hydrostatic test of the liquid tank according to the present invention;
FIG. 4 is a schematic diagram of a second datum point of the method for enhancing the hydrostatic test of the liquid tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-4, the present invention provides a technical solution: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged, 3000t of force is shared, main support frames are arranged at the centers of two end packing belts, and the bottom surface of each support frame is 1m by 11 m; 4 transverse brackets are arranged in the middle of the packing belt for auxiliary support, and the bottom surface of each transverse bracket is 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground and the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled by graded broken stones, then a steel plate with the thickness of more than 20mm of the bottom layer is laid, and the laying area of the steel plate is 12m x 22.7 m. After the floor bottom layer steel sheet is laid, a graded broken stone layer is laid on the bottom steel sheet, a four-side diamond table structure is laid, the height is 590mm, the upper surface guarantees a 12m 22.7m plane, the slope of the inclined plane is 45 degrees, after tamping, the upper surface pad is larger than between a 20mm thick steel sheet support frame and a foundation reinforcing upper surface steel sheet, and 2 layers of steel sheets are arranged to distribute the stress of the support seat to a range of 4m 10 m.
(3) And calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; five reference points P31, P32, P33, P34, P35 and P36 are arranged on the supporting saddle, a light reflection target (except a track) is attached to each reference point, a line throwing instrument is used for calibrating the transverse reference, a horizontal line is thrown on the saddle by the line throwing instrument before water pouring is started, and the reference points are marked by oily notes.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket when the water amount is 500 t.
Example two
The invention provides a technical scheme that: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged, 3000t of force is shared, main support frames are arranged at the centers of two end packing belts, and the bottom surface of each support frame is 1m by 11 m; 4 transverse brackets are arranged in the middle of the packing belt for auxiliary support, and the bottom surface of each transverse bracket is 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground and the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled by graded broken stones, then a steel plate with the thickness of more than 20mm of the bottom layer is laid, and the laying area of the steel plate is 12m x 22.7 m. After the floor bottom layer steel sheet is laid, a graded broken stone layer is laid on the bottom steel sheet, a four-side diamond table structure is laid, the height is 590mm, the upper surface guarantees a 12m 22.7m plane, the slope of the inclined plane is 45 degrees, after tamping, the upper surface pad is larger than between a 20mm thick steel sheet support frame and a foundation reinforcing upper surface steel sheet, and 2 layers of steel sheets are arranged to distribute the stress of the support seat to a range of 4m 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; five reference points P31, P32, P33, P34, P35 and P36 are arranged on the supporting saddle, a light reflection target (except a track) is attached to each reference point, a line throwing instrument is used for calibrating the transverse reference, a horizontal line is thrown on the saddle by the line throwing instrument before water pouring is started, and the reference points are marked by oily notes.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket when the water amount is 1000 t.
EXAMPLE III
The invention provides a technical scheme that: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged, 3000t of force is shared, main support frames are arranged at the centers of two end packing belts, and the bottom surface of each support frame is 1m by 11 m; 4 transverse brackets are arranged in the middle of the packing belt for auxiliary support, and the bottom surface of each transverse bracket is 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground and the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled by graded broken stones, then a steel plate with the thickness of more than 20mm of the bottom layer is laid, and the laying area of the steel plate is 12m x 22.7 m. After the floor bottom layer steel sheet is laid, a graded broken stone layer is laid on the bottom steel sheet, a four-side diamond table structure is laid, the height is 590mm, the upper surface guarantees a 12m 22.7m plane, the slope of the inclined plane is 45 degrees, after tamping, the upper surface pad is larger than between a 20mm thick steel sheet support frame and a foundation reinforcing upper surface steel sheet, and 2 layers of steel sheets are arranged to distribute the stress of the support seat to a range of 4m 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; five reference points P31, P32, P33, P34, P35 and P36 are arranged on the supporting saddle, a light reflection target (except a track) is attached to each reference point, a line throwing instrument is used for calibrating the transverse reference, a horizontal line is thrown on the saddle by the line throwing instrument before water pouring is started, and the reference points are marked by oily notes.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket when the water amount is 1500 t.
Example four
The invention provides a technical scheme that: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged, 3000t of force is shared, main support frames are arranged in the centers of the packing belts at two ends, and the bottom surface of each support frame is 1m x11 m; 4 transverse brackets are arranged in the middle of the packing belt for auxiliary support, and the bottom surface of each transverse bracket is 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground and the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled by graded broken stones, then a steel plate with the thickness of more than 20mm of the bottom layer is laid, and the laying area of the steel plate is 12m x 22.7 m. After the floor bottom layer steel sheet is laid, a graded broken stone layer is laid on the bottom steel sheet, a four-side diamond table structure is laid, the height is 590mm, the upper surface guarantees a 12m 22.7m plane, the slope of the inclined plane is 45 degrees, after tamping, the upper surface pad is larger than between a 20mm thick steel sheet support frame and a foundation reinforcing upper surface steel sheet, and 2 layers of steel sheets are arranged to distribute the stress of the support seat to a range of 4m 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; five reference points P31, P32, P33, P34, P35 and P36 are arranged on the supporting saddle, a light reflection target (except a track) is attached to each reference point, a line throwing instrument is used for calibrating the transverse reference, a horizontal line is thrown on the saddle by the line throwing instrument before water pouring is started, and the reference points are marked by oily notes.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket when the water amount is 2000 t.
EXAMPLE five
The invention provides a technical scheme that: a method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged, 3000t of force is shared, main support frames are arranged at the centers of two end packing belts, and the bottom surface of each support frame is 1m by 11 m; 4 transverse brackets are arranged in the middle of the packing belt for auxiliary support, and the bottom surface of each transverse bracket is 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground and the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled by graded broken stones, then a steel plate with the thickness of more than 20mm of the bottom layer is laid, and the laying area of the steel plate is 12m x 22.7 m. After the floor bottom layer steel sheet is laid, a graded broken stone layer is laid on the bottom steel sheet, a four-side diamond table structure is laid, the height is 590mm, the upper surface guarantees a 12m 22.7m plane, the slope of the inclined plane is 45 degrees, after tamping, the upper surface pad is larger than between a 20mm thick steel sheet support frame and a foundation reinforcing upper surface steel sheet, and 2 layers of steel sheets are arranged to distribute the stress of the support seat to a range of 4m 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; five reference points P31, P32, P33, P34, P35 and P36 are arranged on the supporting saddle, a light reflection target (except a track) is attached to each reference point, a line throwing instrument is used for calibrating the transverse reference, a horizontal line is thrown on the saddle by the line throwing instrument before water pouring is started, and the reference points are marked by oily notes.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket when the water amount is 2500 t.
The working principle of the embodiment is as follows: in using this method for enhancing the hydrostatic test of a tank, first, and not described in detail in this specification, all are within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method for reinforcing a hydraulic test of a liquid tank is characterized by comprising the following steps: the method comprises the following steps:
(1) and determining a support frame scheme: according to the characteristics of a foundation and the structural characteristics of the liquid tank, 6 support frames are arranged to share 3000t of force, a main support frame is arranged at the center of each of two packing belts, 4 transverse moving brackets are arranged in the middle of each packing belt to perform auxiliary support, and the bottom surfaces of the transverse moving brackets are 1.4m by 6.4 m.
(2) And reinforcing the foundation: in order to ensure that the supporting force of the upper surface can be uniformly transmitted to the asphalt ground, the stress of the whole foundation ground is uniform, the liquid tank supporting ground is leveled with graded broken stones, and then the bottom steel plate is laid. After the ground bottom steel plate is laid, a graded gravel layer is laid on the bottom steel plate, and 2 layers of steel plates are arranged between the support frame and the foundation reinforced upper surface steel plate to share the stress of the support seat in the range of 4m x 10 m.
(3) Calibrating a reference point: using a total station to monitor settlement and trim, using a line projector to monitor transverse inclination, setting a measuring point by taking a wharf track and a lighthouse as references, setting four reference points P01, P02, P11 and P12 on the track, and setting a P03 reference point on the lighthouse; the can waist line is provided with three datum points of P41, P42 and P43; the support saddle sets five reference points P31, P32, P33, P34, P35, P36.
(4) And monitoring: before adding water, the line projector calibrates a horizontal reference, the total station measures an initial value, and when the measurement is needed after adding water, the line projector checks the deviation between the horizontal line and the transverse reference point. And the total station measures three-dimensional coordinates of all check points, and compares the three-dimensional coordinates with the initial values, wherein the 'Z' -direction difference value is a settlement value, and the 'Y' -direction deviation of the P01, the P02, the P11, the P12 and the P03 is a deviation value of the track caused by sinking and squeezing of the liquid tank.
(5) Injecting water; and adding water into the liquid tank, and observing the transverse displacement of the gantry crane track and the vertical displacement of the liquid tank and the liquid tank bracket.
2. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: the size of the bottom surface of the support frame in the step (1) is 1m by 1 m.
3. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: the size of the bottom surface of the traverse bracket in the step (1) is 1.4m by 6.4 m.
4. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: the thickness of the steel plate in the step (2) is 20.
5. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: the steel plate laying area in the step (2) is 12m by 22.7 m.
6. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: and (3) laying the gravel layer in the step (2) into a quadrilateral diamond table structure, wherein the height is 590mm, the upper surface of the gravel layer ensures a plane of 12m × 22.7m, the inclination of the inclined plane is 45 degrees, and after tamping, the upper pad is larger than a steel plate with the thickness of 20-30 mm.
7. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: in the step (3), before irrigation starts, a horizontal line is cast on the saddle by using a line casting instrument, and the reference point is marked by using an oily note number.
8. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: and (4) attaching a reflection target to each reference point of the track in the step (3), and calibrating the transverse reference by using a demarcation device.
9. A method for hydraulic test enhancement of a tank according to claim 1, characterized in that: the water adding amount in the step (5) is 0-2500 t.
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