CN108560579B - Spring type pre-buried sizing block construction method - Google Patents
Spring type pre-buried sizing block construction method Download PDFInfo
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- CN108560579B CN108560579B CN201810617258.4A CN201810617258A CN108560579B CN 108560579 B CN108560579 B CN 108560579B CN 201810617258 A CN201810617258 A CN 201810617258A CN 108560579 B CN108560579 B CN 108560579B
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- 238000004513 sizing Methods 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000010797 grey water Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims 1
- 235000000396 iron Nutrition 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
Abstract
The invention discloses a construction method of a spring type pre-buried sizing block, which comprises the following steps: 1) Sizing block arrangement: placing two inclined cushions on the cushion iron arrangement position according to the drawing requirement, placing springs at the bottoms of the inclined cushions, and adjusting the surface heights on all the cushion irons to be consistent; 2) And (3) supporting a template: the template box is formed by templates, and is arranged at the periphery of the oblique sizing block, and the bottom surface of the template box contacts with the concrete foundation; 3) Checking the gap: the platen is placed on the upper surface of the inclined iron, the platen is measured and adjusted to be the same height after being in place, then clearance between the inclined iron and between the inclined iron and the platen is checked by a feeler gauge, and the clearance is required to be less than or equal to 0.05mm, 4) grouting material pouring is carried out: according to the gray water ratio of the grouting material, the grouting layer is formed by mixing and stirring the grouting material, then injecting the grouting material into a template box for solidification, and the grouting material fills the template box; 5) And (3) removing the template: removing the platen after curing expires, removing the template; 6) Platen and equipment in place: and after the steps are qualified, the bedplate and the equipment are respectively positioned.
Description
Technical field:
the invention relates to a method for arranging and constructing sizing blocks of large-scale precise equipment in electric power construction, in particular to a method for constructing spring type embedded sizing blocks.
The background technology is as follows:
before the large-scale precise equipment such as a steam turbine generator is in place, the sizing block group and the bedplate are arranged, and the large-scale precise equipment can be in place after the sizing block group and the bedplate are arranged. The gap between each set of sizing blocks and the bedplate must meet the requirements, and is generally less than or equal to 0.05mm. With the increase of the capacity of the unit, the clearance is more and more difficult to eliminate, the installation requirement of the large-sized unit cannot be met, the safe and stable operation of the unit is threatened, and the installation requirement of the large-sized unit cannot be met. The method that the present eastern turbine plant adopts the cement cushion block to replace the sizing block, the method that the introduction type unit of the Shanghai turbine plant directly adopts jackscrew adjustment and then grouting is adopted, and the sizing block is cancelled, and the two methods are good, but do not have large-area popularization, and the present large-scale precision equipment is mainly provided with the sizing block.
Taking the construction of 2×300 megaly tuning machine stator in thai as an example, the 300 megaly tuning machine stator has 136 groups of sizing blocks, and the arrangement of the sizing blocks in China at present is summarized and compared as follows:
conventional planer sizing block arrangement: the concrete foundation is ground by selecting a planing hammer and chiseling the concrete foundation, so that the environment is polluted and the harm to the human body is great; the concrete at the sizing block position is chiseled to remove a mortar layer, then the mortar layer is leveled, the mortar layer and the concrete are closely contacted and have no tilting at four corners, and the working construction is difficult; and the gap between the sizing block and the bedplate at the middle position of the large bedplate cannot be eliminated.
Traditional pre-buried sizing block: adjusting sizing block jackscrews in a limited space, ensuring the level of the bedplate, and ensuring long construction time, wherein sizing blocks in the middle of a large bedplate cannot be adjusted; the grouting layer template is difficult to work and is very easy to rework.
And (3) arranging cement cushion blocks: the grouting layer template is supported before (after) the bedplate is in place, temporary supports are arranged at four corners, the bedplate level is adjusted to be 0.02mm/m, and the adjustment is simple; however, the qualification rate of the cement cushion block manufactured once is more than 90%, two layers of skins and bubbles are easy to appear in the cement cushion block, and 7 days are required for remanufacturing once each failure, so that the construction period is delayed.
The invention comprises the following steps:
the technical problems to be solved by the invention are as follows: the spring type pre-buried sizing block device overcomes the defects of the existing equipment, and is simple and quick in eliminating gaps between sizing blocks and a bedplate, improving installation quality, saving cost, saving energy, protecting environment, shortening construction period and being wide in applicability.
The technical scheme of the invention is as follows: the spring type pre-buried sizing block construction method comprises the following steps:
the preparation work comprises the following steps:
1) Roughening a concrete foundation, chiseling a surface mortar layer to expose a concrete layer, and cleaning the surface of the concrete;
2) The inclined pad iron is selected according to the type of equipment, the strength of the concrete foundation and the design requirement;
3) Measuring elevation of the foundation, calculating elasticity and length of the spring, and purchasing a proper spring;
4) Cleaning and checking the surfaces of the sizing block and the bedplate;
the operation steps are as follows:
1) Sizing block arrangement: two inclined iron pads are arranged on the iron pad arrangement position according to the drawing requirement, springs are arranged at the bottoms of the inclined iron pads, and the heights of the upper surfaces of all the iron pads are adjusted to be consistent;
2) And (3) supporting a template: the template box is formed by templates, and is arranged at the periphery of the oblique sizing block, and the bottom surface of the template box contacts with the concrete foundation;
3) Checking the gap: the bedplate is placed on the upper surface of the inclined iron, the bedplate is measured and adjusted to be at the same height after being positioned, then a clearance between the inclined iron and between the inclined iron and the bedplate is checked by using a feeler gauge, and the clearance is required to be smaller than or equal to 0.05mm;
4) Pouring grouting materials: according to the gray water ratio of the grouting material, the grouting layer is formed by mixing and stirring the grouting material, then injecting the grouting material into a template box for solidification, and the grouting material fills the template box;
5) And (3) removing the template: removing the platen after curing expires, removing the form, and if reworking is caused, generally causing the pouring part to be separated from the concrete when the wood form is removed;
6) Platen and equipment in place: and after the steps are qualified, the bedplate and the equipment are respectively positioned.
In the step 2) of the spring type pre-buried sizing block construction method, a reusable wood template is adopted as the template, and the height of the template is equal to the sum of the elevation of the lower surface of the platen minus the elevation of the concrete foundation and the thickness of the big end of the inclined sizing block; the diagonal gasket is easy to touch when the template box is placed, so that after the template box is caulked by cement, the elevation of the diagonal gasket needs to be checked again to prevent the spring from being over-compressed or under-compressed after the platen is in place.
The spring type pre-buried sizing block construction method comprises the following steps that 3) after a bedplate is in place, all the bedplate is measured and adjusted to be at the same height by using water communication or a level gauge, and each bedplate is measured and leveled by using a combined image level; when the clearance is checked by using the feeler gauge, because the site environment is relatively bad or the small concrete particles are arranged at the clearance position, the clearance is larger than 0.05mm, the sizing block is rocked, and the clearance is naturally eliminated.
The construction method of the spring type pre-buried sizing block comprises the step 4), wherein the grouting height is the same as the height of the template; before grouting, the concrete foundation should be guaranteed to be moisturized for 24 hours after cleaning.
In the spring type pre-buried sizing block construction method, in the step 1), 4 or more springs are placed at the bottom of the oblique sizing block; and (3) adjusting the elevation of the inclined pad iron at four corners, and adjusting the heights of the upper surfaces of all the inclined pad irons to be consistent by taking the upper surfaces of the inclined pad iron at four corners as a reference and pulling a powder line or a steel wire.
The technology of the invention has the following beneficial effects:
the device has high efficiency, avoids the traditional procedures of eliminating the gap between the sizing block and the bedplate and leveling the concrete foundation at the sizing block position, has compact contact between the sizing block and the foundation and no tilting at four corners, directly eliminates the gap between the sizing block and between the sizing block and the bedplate, and can meet the construction requirement only by adjusting the height of the oblique sizing block in the later stage.
The method has the advantages of economy, small steel consumption, small grouting material consumption, simple construction method and short construction time, can save a large number of people and material resources, reduce the construction cost of enterprises, and greatly improve the installation quality.
Energy saving and environmental protection, no dust pollution and environmental protection.
Practice proves that compared with other sizing block arrangement, the construction method has the advantages of shortening the construction period, saving the material cost, being environment-friendly and improving the installation quality. Compared with the traditional sizing block arrangement method, the method comprises the following steps:
construction period and labor cost:
the traditional method is to arrange sizing blocks-construction by adopting a planing hammer: the construction time is 45 days, the construction cost is 54000 yuan,
the traditional method is to arrange sizing blocks, and angle grinder construction is adopted: the construction time is 41 days, the construction cost is 49200 yuan,
pre-buried pad iron method-adopting welding jackscrew for construction: construction time is 28 days, construction cost is 33600 yuan,
the invention relates to a spring type pre-buried sizing block construction method which comprises the following steps: construction time is 14 days, construction cost is 16800 yuan;
the material cost is as follows:
grouting material is used for replacing the flat sizing block:
traditional flat sizing block: flat iron cost: 2.4 tons x 0.6 ten thousand yuan per ton=1.44 ten thousand yuan,
the invention comprises the following steps: grouting material cost: 0.7 ton x 0.68 ten thousand yuan per ton = 0.476 ten thousand yuan,
material cost: 1 element of 4 springs, 140 elements of purchased springs,
conclusion: 1.44-0.476-0.14 = 0.95 tens of thousands,
the invention can save the material cost by 0.95 ten thousand.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
The specific embodiment is as follows: the spring type pre-buried sizing block construction method comprises the following steps:
the preparation work comprises the following steps:
1) Roughening a concrete foundation, chiseling a surface mortar layer to expose a concrete layer, and cleaning the surface of the concrete;
2) The inclined pad iron 2 is selected according to the type of equipment, the strength of the concrete foundation and the design requirement;
3) Measuring elevation of the foundation, calculating elasticity and length of the spring, and purchasing a proper spring 3;
4) Cleaning and checking the surfaces of the inclined pad iron 2 and the bedplate 1;
the operation steps are as follows:
1) Sizing block arrangement: two inclined iron pads 2 are arranged on the iron pad arrangement position according to the drawing requirement, springs 3 are arranged at the bottoms of the inclined iron pads 2, and the heights of the upper surfaces of all the inclined iron pads 2 are adjusted to be consistent;
2) And (3) supporting a template: the template box is formed by templates, and is placed at the periphery of the inclined pad iron 2, and the bottom surface of the template box contacts with the concrete foundation; the template adopts a reusable wood template, and the height of the template is equal to the sum of the elevation of the lower surface of the bedplate 1 minus the elevation of the concrete foundation and the thickness of the big head of the inclined pad iron 2; the diagonal gasket 2 is easy to touch when the template box is placed, so after the template box is caulked by cement, the elevation of the diagonal gasket 2 needs to be checked again to prevent the spring from being over-compressed or under-compressed after the platen 1 is in place.
3) Checking the gap: the bedplate 1 is placed on the upper surface of the inclined pad iron 2, the bedplate 1 is positioned, the same height of all the bedplate 1 is measured and adjusted, then a clearance between the inclined pad iron 2 and between the inclined pad iron 2 and the bedplate 1 is checked by using a feeler gauge, and the clearance is required to be smaller than or equal to 0.05mm;4 or more springs are arranged at the bottom of the oblique sizing block 2; the elevation of the oblique sizing block 2 at four angles is adjusted, the upper surfaces of the oblique sizing blocks 2 at four angles are used as a reference, powder lines or steel wires are pulled, and the heights of the upper surfaces of all the oblique sizing blocks 2 are adjusted to be consistent; after the table boards 1 are in place, measuring and adjusting the same height of all the table boards 1 by using water communication or a level gauge, and measuring and leveling each table board 1 by using a combined image level; when the clearance is checked by using the feeler gauge, because the site environment is relatively bad or the small concrete particles are arranged at the clearance position, the clearance is larger than 0.05mm, the oblique sizing block 2 is rocked, and the clearance is naturally eliminated.
4) Pouring grouting materials: according to the gray water ratio of the grouting material, the grouting layer 4 is formed by mixing and stirring the grouting material, then injecting the grouting material into a template box for solidification, and the grouting material fills the template box; the grouting height is the same as the template height; before grouting, the concrete foundation should be guaranteed to be moisturized for 24 hours after cleaning.
5) And (3) removing the template: after curing has expired, the platen 1 is removed and the form is removed, typically resulting in the cast portion being detached from the concrete when the wood form is removed if rework is to be created.
6) Platen and equipment in place: after the steps are qualified, the bedplate 1 and the equipment are respectively positioned.
Claims (5)
1. A construction method of a spring type pre-buried sizing block comprises the following steps:
the preparation work comprises the following steps:
1) Roughening a concrete foundation, chiseling a surface mortar layer to expose a concrete layer, and cleaning the surface of the concrete;
2) The inclined pad iron (2) is selected according to the type of equipment, the strength of the concrete foundation and the design requirement;
3) Measuring elevation of the foundation, calculating elasticity and length of the spring, and purchasing a proper spring (3);
4) Cleaning and checking the surfaces of the inclined pad iron (2) and the bedplate (1);
the operation steps are as follows:
1) Sizing block arrangement: according to the drawing requirement, two inclined iron pads (2) are arranged at the iron pad arrangement positions, springs (3) are arranged at the bottoms of the inclined iron pads (2), and the heights of the upper surfaces of all the inclined iron pads (2) are adjusted to be consistent;
2) And (3) supporting a template: the template box is formed by templates, and is arranged at the periphery of the inclined pad iron (2), and the bottom surface of the template box contacts with the concrete foundation;
3) Checking the gap: the platen (1) is placed on the upper surface of the inclined pad iron (2), the platen (1) is positioned, the same height of all the platens (1) is measured and adjusted, then a clearance between the inclined pad iron (2) and between the inclined pad iron (2) and the platens (1) is checked by using a feeler gauge, and the clearance is required to be smaller than or equal to 0.05mm;
4) Pouring grouting materials: according to the gray water ratio of the grouting material, the grouting layer (4) is formed by mixing and stirring the grouting material, then injecting the grouting material into a template box for solidification, and the grouting material fills the template box;
5) And (3) removing the template: after the curing is finished, removing the platen (1), removing the template, and if reworking is caused, generally, removing the wood template to cause the pouring part to be separated from the concrete;
6) Platen and equipment in place: and after the steps are qualified, the bedplate (1) and the equipment are respectively positioned.
2. The spring type pre-buried sizing block construction method according to claim 1, wherein the method comprises the following steps: in the step 2), a reusable wood template is adopted as the template, and the height of the template is equal to the sum of the elevation of the lower surface of the bedplate (1) minus the elevation of the concrete foundation and the thickness of the big head of the inclined pad iron (2); the diagonal gasket (2) is easy to touch when the template box is placed, so that after the template box is caulked by cement, the elevation of the diagonal gasket (2) needs to be checked again, and the spring is prevented from being over-compressed or under-compressed after the platen (1) is in place.
3. The spring type pre-buried sizing block construction method according to claim 1, wherein the method comprises the following steps: step 3) after the table boards (1) are positioned, measuring and adjusting the same height of all the table boards (1) by using water communication or a level gauge, and measuring and leveling each table board (1) by using an imaging level; when the clearance is checked by using the feeler gauge, because the site environment is relatively bad or the small concrete particles are arranged at the clearance position, the clearance is larger than 0.05mm, the tilting pad iron (2) is rocked, and the clearance is naturally eliminated.
4. The spring type pre-buried sizing block construction method according to claim 1, wherein the method comprises the following steps: step 4), grouting height is the same as the height of the template; before grouting, the concrete foundation should be guaranteed to be moisturized for 24 hours after cleaning.
5. The spring type pre-buried sizing block construction method according to claim 1, wherein the method comprises the following steps: in the step 1), 4 or more springs are arranged at the bottom of the inclined pad iron (2); and (3) adjusting elevation of the four-angle diagonal shims (2), and adjusting the heights of the upper surfaces of all diagonal shims (2) to be consistent by taking the upper surfaces of the four-angle diagonal shims (2) as references and pulling powder wires or steel wires.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810617258.4A CN108560579B (en) | 2018-06-15 | 2018-06-15 | Spring type pre-buried sizing block construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617258.4A CN108560579B (en) | 2018-06-15 | 2018-06-15 | Spring type pre-buried sizing block construction method |
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| CN108560579A CN108560579A (en) | 2018-09-21 |
| CN108560579B true CN108560579B (en) | 2023-11-10 |
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| CN110405465A (en) * | 2019-07-22 | 2019-11-05 | 天津天安机电设备安装工程有限公司 | A kind of high-pressure roller mill construction method of installation |
| CN111441379A (en) * | 2020-04-02 | 2020-07-24 | 河南中电工程咨询有限公司 | Installation and construction method of coupling variable-frequency generator |
| CN113638438A (en) * | 2021-08-13 | 2021-11-12 | 中材天安(天津)工程有限公司 | Installation method of roller type vertical mill support base |
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| TWM291446U (en) * | 2005-12-06 | 2006-06-01 | Yu-Cheh Hsiao | Elevation indicator |
| CN201954201U (en) * | 2010-10-25 | 2011-08-31 | 中国三冶集团有限公司机械安装工程公司 | Strutting arrangement for equipment installation |
| CN102251537A (en) * | 2011-04-28 | 2011-11-23 | 中冶建工集团有限公司 | Construction method for installing block slurry of sizing block by equipment |
| CN202227697U (en) * | 2011-06-20 | 2012-05-23 | 肖振清 | Device for forming concrete |
| JP3195881U (en) * | 2014-09-11 | 2015-02-12 | 株式会社ヤマトアパレイユ | Concave hardware for filling grout material |
| CN104989918A (en) * | 2015-05-21 | 2015-10-21 | 中冶天工集团有限公司 | Method for setting large-area foundation pad iron |
-
2018
- 2018-06-15 CN CN201810617258.4A patent/CN108560579B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM291446U (en) * | 2005-12-06 | 2006-06-01 | Yu-Cheh Hsiao | Elevation indicator |
| CN201954201U (en) * | 2010-10-25 | 2011-08-31 | 中国三冶集团有限公司机械安装工程公司 | Strutting arrangement for equipment installation |
| CN102251537A (en) * | 2011-04-28 | 2011-11-23 | 中冶建工集团有限公司 | Construction method for installing block slurry of sizing block by equipment |
| CN202227697U (en) * | 2011-06-20 | 2012-05-23 | 肖振清 | Device for forming concrete |
| JP3195881U (en) * | 2014-09-11 | 2015-02-12 | 株式会社ヤマトアパレイユ | Concave hardware for filling grout material |
| CN104989918A (en) * | 2015-05-21 | 2015-10-21 | 中冶天工集团有限公司 | Method for setting large-area foundation pad iron |
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