CN104763005A - Large steel spherical tank inclination rectification method - Google Patents
Large steel spherical tank inclination rectification method Download PDFInfo
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- CN104763005A CN104763005A CN201510117756.9A CN201510117756A CN104763005A CN 104763005 A CN104763005 A CN 104763005A CN 201510117756 A CN201510117756 A CN 201510117756A CN 104763005 A CN104763005 A CN 104763005A
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- support leg
- foundation concrete
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- jack
- spherical tank
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Abstract
The invention discloses a large steel spherical tank inclination rectification method. The method comprises 1) welding corbels on the two sides of support leg ear plates except a highest support leg to form supporting points; 2) measuring the lifting amount of the support legs with the highest support leg serving as the reference point; 3) selecting the lifting capacity and the largest lifting amount of spiral jacks; 4) loosening foundation bolts, putting the jacks between a foundation concrete bearing platform and the corbels symmetrically, performing jacking from the lowest support legs, and performing jacking by changing to the adjacent two-side support legs for every six time of rod pressing till the support legs reach the required lifting amount; 5) filling gaps between support leg bottom plates and the foundation concrete bearing platform with steel plates after the preset lifting amounts of the support legs are all reached, and performing spot welding on the support plates and the foundation concrete bearing platform; 6) erecting formwork on the upper portion of the foundation concrete bearing platform to be subjected to grouting pouring; cutting off the corbels on the support legs. By the aid of the method, the corbels are clamped welded and jacked on the support leg ear plates to create supporting points to form an equilibrium force system on the foundation concrete bearing platform, and accordingly, the method is safe and reliable, simple and convenient to operate, low in cost and high in efficiency.
Description
Technical field
The present invention relates to a kind of large-sized steel spherical tank inclination correction method, belong to chemical industry, oil, water conservancy, building rectification technical field.
Background technology
Large-sized steel spherical tank is in During Process of Long-term Operation, and due to reasons such as damp sink of foundation, vibrating load, earthquakes, ground there will be differential settlement, then spherical tank can tilt, if correct not in time, partial structurtes distortion and stress will be brought to concentrate to tank body, produce potential safety hazard.Current inclination correction method mainly contains " crane traction " and " construction auxiliary rack " reaches rectification object.Have following shortcoming in this rectification implementation process: 1) crane drawing method is by the limitation in place, during traction, Uplifting amount is difficult to control, and has uncertain factor in process, and safety is difficult to ensure; 2) building auxiliary rack method is around tank body, scaffold erecting and set up counter-force platform.Consuming time many, costly, effect is extremely low.
Summary of the invention
Technical problem to be solved by this invention is the defect existed for prior art, provides a kind of large-sized steel spherical tank inclination correction method.
For solving this technical problem, the invention provides a kind of large-sized steel spherical tank inclination correction method, the whole tank body of involved large-sized steel spherical tank is supported on ten foundation concrete cushion caps by ten support leg, specifically comprises the steps:
1) weld bracket: find out the highest support leg, all the other nine support leg chosen beyond the highest support leg are respectively welded bracket respectively and are formed the strong point in the both sides of its otic placode; Adopt built-up welding welding manner between described otic placode and bracket, bead-on-plate weld length is not less than 20cm and reaches full weld;
2) measurement of the level: with the highest support leg for reference point, measures the Uplifting amount that each support leg needs;
3) jack is selected: select reliable and stable screw jack, weight and step 2 according to spherical tank) measured by the maximum Uplifting amount of support leg, choose the lifting capacity of jack and maximum lifting height and minimum altitude, each support leg arranges two jack;
4) lifting rectification: first releasably foot bolt, between each foundation concrete cushion cap and bracket, symmetry places two jack; First to minimum support leg jacking, the depression bar jacking simultaneously of two jack in each support leg, every depression bar pauses once for six times, and the support leg changing adjacent both sides into continues jacking, and same depression bar pauses once for six times, by that analogy; Return minimum support leg jacking, circulate successively, until each support leg all reaches the height needing lifting;
5) cushion block spot welding: reach the height of predetermined lifting in each support leg after, support leg base plate bottom support leg and height of formation space not etc. between foundation concrete cushion cap, with steel plate or bloom, this space is filled out tightly, measure again once, confirm levelling after by firm for the steel slide plate spot welding on this steel plate or bloom and foundation concrete cushion cap;
6) grouting material builds cushion cap: measure once before grouting material is built again, if any injustice, repeat preceding step 2) ~ 5), confirm levelling after, on foundation concrete cushion cap top, formwork grouting material is built, and fills up the vacancy position of foundation concrete cushion cap; After having built, slice off the bracket in each support leg.
Described bracket shape is right-angled trapezium, and employing thickness is that the Q345 steel plate of 20mm is made, and its two ends size is respectively 200mm and 60mm, and height is 320mm, and large end is welded on otic placode (2); Selection of electrodes E50.
The specification of described screw jack is specification QLD25, and lifting capacity is 25t, and lifting altitude is 125mm, minimum altitude 262mm.
Beneficial effect: the present invention is on the otic placode of spherical tank support column, and folder weldering two panels steel plate forms a little jacking bracket construction strong point, jacking counter-force is acted on pillar concrete cushion cap simultaneously, forms a balanced system of force, overcome the shortcoming of current additive method.The present invention is safe and reliable, easy and simple to handle, expense is low, efficiency is high, and 2-3 people just can complete the rectification workload of spherical tank ten support leg for one day.
Accompanying drawing explanation
Fig. 1 is enforcement schematic diagram of the present invention.
In figure: 1 support leg, 2 otic placodes, 3 brackets, 4 jack, 5 foundation concrete cushion caps, 6 support leg base plates, 7 stone bolt, 8 spherical tanks.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is specifically described.
Figure 1 shows that enforcement schematic diagram of the present invention.
The whole tank body of the large-sized steel spherical tank 8 that the present invention relates to is supported on ten foundation concrete cushion caps 5 by ten support leg 1, on the otic placode 2 of support leg 1, folder weldering two panels steel plate forms a little jacking bracket 3 and builds the strong point, jacking counter-force is acted on pillar concrete cushion cap 5 simultaneously, form a balanced system of force, specifically comprise the steps:
1) bracket is welded: find out the highest support leg, all the other nine support leg 1 chosen beyond the highest support leg are respectively welded bracket 3 in the both sides of its otic placode 2 respectively and formed the strong point; Adopt built-up welding welding manner between described otic placode 2 and bracket 3, bead-on-plate weld length is not less than 20cm and reaches full weld;
2) measurement of the level: with the highest support leg for reference point, measures the Uplifting amount that each support leg 1 needs;
3) jack is selected: select reliable and stable screw jack, weight and step 2 according to spherical tank 8) measured by the maximum Uplifting amount of support leg 1, choose the lifting capacity of jack 4 and maximum lifting height and minimum altitude, each support leg 1 arranges two jack 4;
4) lifting rectification: first releasably foot bolt 7, between each foundation concrete cushion cap 5 and bracket 3, symmetry places two jack 4; First to minimum support leg 1 jacking, the depression bar jacking simultaneously of two jack in each support leg 1, every depression bar pauses once for six times, and the support leg 1 changing adjacent both sides into continues jacking, and same depression bar pauses once for six times, by that analogy; Return minimum support leg jacking, circulate successively, until each support leg 1 all reaches the height needing lifting;
5) cushion block spot welding: after each support leg 1 reaches the height of predetermined lifting, support leg base plate 6 bottom support leg 1 and height of formation space not etc. between foundation concrete cushion cap 5, with steel plate or bloom, this space is filled out tightly, measure again once, confirm levelling after by firm for the steel slide plate spot welding on this steel plate or bloom and foundation concrete cushion cap 5;
6) grouting material builds cushion cap: measure once before grouting material is built again, if any injustice, repeat preceding step 2) ~ 5), confirm levelling after, on foundation concrete cushion cap 5 top, formwork grouting material is built, and fills up the vacancy position of foundation concrete cushion cap 5; After having built, slice off the bracket 3 in each support leg.
Described bracket 3 shape is right-angled trapezium, and employing thickness is that the Q345 steel plate of 20mm is made, and its two ends size is respectively 200mm and 60mm, and height is 320mm, and large end is welded on otic placode 2, and reaction support is on foundation concrete cushion cap 5; Selection of electrodes E50.
The specification of described screw jack 4 is specification QLD25, and lifting capacity is 25t, and lifting altitude is 125mm, minimum altitude 262mm.
The present invention is on the otic placode of spherical tank support column, and folder weldering two panels steel plate forms a little jacking bracket construction strong point, jacking counter-force is acted on pillar concrete cushion cap simultaneously, forms a balanced system of force, overcome the shortcoming of current additive method.The present invention is safe and reliable, easy and simple to handle, expense is low, efficiency is high, and 2-3 people just can complete the rectification workload of spherical tank ten support leg for one day.
The above-mentioned embodiment of the present invention, just illustrates, is not only, and the change within the scope of the present invention all or equivalent scope of the present invention is all surrounded by the present invention.
Claims (3)
1. a large-sized steel spherical tank inclination correction method, the whole tank body of involved large-sized steel spherical tank (8) is supported on ten foundation concrete cushion caps (5) by ten support leg (1), it is characterized in that, specifically comprises the steps:
1) weld bracket: find out the highest support leg, all the other nine support leg (1) chosen beyond the highest support leg are respectively welded bracket (3) respectively and are formed the strong point in the both sides of its otic placode (2); Adopt built-up welding welding manner between described otic placode (2) and bracket (3), bead-on-plate weld length is not less than 20cm and reaches full weld;
2) measurement of the level: with the highest support leg for reference point, measures the Uplifting amount that each support leg (1) needs;
3) jack is selected: select reliable and stable screw jack, weight and step 2 according to spherical tank (8)) measured by the maximum Uplifting amount of support leg (1), choose the lifting capacity of jack (4) and maximum lifting height and minimum altitude, each support leg (1) arranges two jack (4);
4) lifting rectification: first releasably foot bolt (7), between each foundation concrete cushion cap (5) and bracket (3), symmetry places two jack (4); First to minimum support leg (1) jacking, the depression bar jacking simultaneously of two jack in each support leg (1), every depression bar pauses once for six times, and the support leg (1) changing adjacent both sides into continues jacking, same depression bar pauses once for six times, by that analogy; Return minimum support leg jacking, circulate successively, until each support leg (1) all reaches the height needing lifting;
5) cushion block spot welding: after each support leg (1) reaches the height of predetermined lifting, be positioned at height of formation space not etc. between the support leg base plate (6) of support leg (1) bottom and foundation concrete cushion cap (5), with steel plate or bloom, this space is filled out tightly, measure again once, confirm levelling after by firm for the steel slide plate spot welding on this steel plate or bloom and foundation concrete cushion cap (5);
6) grouting material builds cushion cap: measure once before grouting material is built again, if any injustice, repeat preceding step 2) ~ 5), confirm levelling after, on foundation concrete cushion cap (5) top, formwork grouting material is built, and fills up the vacancy position of foundation concrete cushion cap (5); After having built, slice off the bracket (3) in each support leg.
2. large-sized steel spherical tank inclination correction method according to claim 1, it is characterized in that: described bracket (3) shape is right-angled trapezium, employing thickness is that the Q345 steel plate of 20mm is made, its two ends size is respectively 200mm and 60mm, height is 320mm, and large end is welded on otic placode (2); Selection of electrodes E50.
3. large-sized steel spherical tank inclination correction method according to claim 1 and 2, is characterized in that: the specification of described screw jack (4) is specification QLD25, and lifting capacity is 25t, and lifting altitude is 125mm, minimum altitude 262mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510117756.9A CN104763005A (en) | 2015-03-18 | 2015-03-18 | Large steel spherical tank inclination rectification method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510117756.9A CN104763005A (en) | 2015-03-18 | 2015-03-18 | Large steel spherical tank inclination rectification method |
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| CN104763005A true CN104763005A (en) | 2015-07-08 |
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| CN201510117756.9A Pending CN104763005A (en) | 2015-03-18 | 2015-03-18 | Large steel spherical tank inclination rectification method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119260A (en) * | 2019-12-26 | 2020-05-08 | 杭州敦固建筑特种工程有限公司 | Deviation rectifying method applying dynamic monitoring and dynamic reinforcement |
| CN113818500A (en) * | 2021-09-14 | 2021-12-21 | 杭州圣基建筑特种工程有限公司 | Integral lifting and inclination-correcting construction method for high-rise building foundation and structure |
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| CN103938663A (en) * | 2013-10-29 | 2014-07-23 | 国家电网公司 | Correction device of inclined power transmission tower made of signal-splicing steel angle principal material |
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|---|---|---|---|---|
| CN111119260A (en) * | 2019-12-26 | 2020-05-08 | 杭州敦固建筑特种工程有限公司 | Deviation rectifying method applying dynamic monitoring and dynamic reinforcement |
| CN113818500A (en) * | 2021-09-14 | 2021-12-21 | 杭州圣基建筑特种工程有限公司 | Integral lifting and inclination-correcting construction method for high-rise building foundation and structure |
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Application publication date: 20150708 |
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