CN111502375A - Prestress tensioning process method for ultra-large silo - Google Patents
Prestress tensioning process method for ultra-large silo Download PDFInfo
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- CN111502375A CN111502375A CN202010343778.8A CN202010343778A CN111502375A CN 111502375 A CN111502375 A CN 111502375A CN 202010343778 A CN202010343778 A CN 202010343778A CN 111502375 A CN111502375 A CN 111502375A
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- buttress
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
- E04H7/20—Prestressed constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a prestressed tensioning process method for an ultra-large silo, which comprises the following steps: the method comprises the steps of arranging a pore channel on a silo buttress, calculating the reading of a jack oil pressure gauge corresponding to the control force of a tensioning anchor, the elongation of a jack piston, penetrating a steel strand, tensioning a first buttress 1, a third buttress 3 and a fifth buttress in a grading manner by using two jacks from top to bottom, tensioning a second buttress 2, a fourth buttress 4 and a sixth buttress 6 in a grading manner by using two jacks from bottom to top, grouting the pore channel, attaching the buttress for sealing, curing concrete and removing an end mold.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a prestress tensioning process method.
Background
At present, with the rapid development of economic construction and industrial construction, large or ultra-large silos are continuously pulled out, for example, on a 1 ten thousand ton cement production line produced daily, ultra-large clinker silos are needed, the height of the silo reaches about 40m, the inner diameter of the silo wall reaches about 50m, the thickness of the silo wall reaches about 50cm, and the silo is generally provided with a plurality of buttress columns. Because the span of the silo is very large, the length of the steel strand reaches about 60m, the theoretical elongation of the steel strand is usually larger than the maximum elongation of the jack, and two times of graded tensioning are needed, so that the progress is slow, and the error is increased.
Therefore, a new prestressed tension process is needed to solve the above technical problems.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the invention and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In this summary, a series of simplified form concepts are introduced that are simplifications of the prior art in this field, which will be described in further detail in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The invention provides a prestress tensioning process method for an ultra-large silo, which aims to solve the technical problem and comprises the following steps:
s1, respectively arranging multilayer pore canals on a first buttress column 1, a second buttress column 2, a third buttress column 3, a fourth buttress column 4, a fifth buttress column 5 and a sixth buttress column 6 of the silo, wherein the first buttress column 1, the second buttress column 2, the third buttress column 3, the fourth buttress column 4, the fifth buttress column 5 and the sixth buttress column 6 are arranged at intervals;
s2, according to the control stress of the design requirement, the control force of the tension anchor is worked out by 100% F, jack oil pressure gauge readings corresponding to the control forces of 15% F, 30% F, 60% F and 100% F are respectively worked out, and the elongation of the jack piston when the control forces are 15% F, 30% F, 60% F and 100% F is measured;
s3, steel strands penetrate through the multilayer pore channel, and each steel strand is suitable for stretching three adjacent buttress columns;
s4, simultaneously stretching the first buttress column 1, the third buttress column 3 and the fifth buttress column 5 in stages by using two jacks from top to bottom according to the calculated control forces of 15% F, 30% F, 60% F and 100% F;
s5, simultaneously stretching the second buttress column 2, the fourth buttress column 4 and the sixth buttress column 6 in stages by two jacks from bottom to top according to the solved control forces of 15% F, 30% F, 60% F and 100% F:
s6, grouting the pore channel;
s7, attaching wall columns to seal anchors;
s8, concrete curing and end mould dismantling
Optionally, the steel strands include a first steel strand for tensioning the first buttress column 1, the sixth buttress column 6, and the fifth buttress column 5, a second steel strand for tensioning the first buttress column 1, the second buttress column 2, and the third buttress column 3, a third steel strand for tensioning the third buttress column 3, the fourth buttress column 4, and the fifth buttress column 5, a fourth steel strand for tensioning the second buttress column 2, the first buttress column 1, and the sixth buttress column 6, a fifth steel strand for tensioning the second buttress column 2, the third buttress column 3, and the fourth buttress column 4, and a sixth steel strand for tensioning the fourth buttress column 4, the fifth buttress column 5, and the sixth buttress column 6.
Alternatively, in the step of S4,
the sequence and the control force for tensioning the first end 1A and the second end 5A of the first steel strand are as follows in sequence: is 1A: 15%, 5A: 15%, 5A 30%, 5A 60%, 5A 100%, 1A 100%;
the sequence and the control force for tensioning the first end 1B and the second end 3B of the second steel strand are as follows in sequence: 1B: 15%, 3B: 15%, 3B: 30%, 3B: 60%, 3B: 100%, 1B: 100 percent;
the sequence and the control force for tensioning the first end 3F and the second end 5F of the third steel strand are as follows in sequence: 3F: 15%, 5F: 15%, 5F: 30%, 5F: 60%, 5F: 100%, 3F: 100 percent;
the sequence and the control force for tensioning the first end 2C and the second end 6C of the fourth steel strand are as follows in sequence: 2C: 15%, 6C: 15%, 6C: 30%, 6C: 60%, 6C: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 2D and the second end 4D of the fifth steel strand are as follows in sequence: 2D: 15%, 4D: 15%, 4D: 30%, 4D: 60%, 4D: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 4E and the second end 6E of the sixth steel strand are as follows in sequence: 4E: 15%, 6E: 15%, 6E: 30%, 6E: 60%, 6E: 100 percent and 4E:100 percent.
Optionally, the jack is 500T in specification, and the jack is used in cooperation with a hydraulic pump.
The invention has the technical effects that:
the prestress tension process method can greatly improve the bearing capacity and the structural rigidity of the silo structure, can effectively control the crack and the deflection of the original structure, obviously improve the crack resistance of the original structure and increase the durability of the structure, construction according to the method ensures that tension data and various technical indexes meet domestic and foreign building quality standards, can greatly shorten the construction period, and has obvious economic benefit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a first schematic diagram of the pre-stressed tensioning of a silo according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of the silo prestress tension of the embodiment of the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
As shown in fig. 1 and 2, the prestress tensioning process for an ultra-large silo according to the invention comprises the following steps:
a prestress tensioning process method for an ultra-large silo is characterized by comprising the following steps:
s1, respectively arranging multilayer pore canals on a first buttress column 1, a second buttress column 2, a third buttress column 3, a fourth buttress column 4, a fifth buttress column 5 and a sixth buttress column 6 of the silo, wherein the first buttress column 1, the second buttress column 2, the third buttress column 3, the fourth buttress column 4, the fifth buttress column 5 and the sixth buttress column 6 are arranged at intervals;
s2, according to the control stress of the design requirement, the control force of the tension anchor is worked out by 100% F, jack oil pressure gauge readings corresponding to the control forces of 15% F, 30% F, 60% F and 100% F are respectively worked out, and the elongation of the jack piston when the control forces are 15% F, 30% F, 60% F and 100% F is measured;
s3, steel strands penetrate through the multilayer pore channel, and each steel strand is suitable for stretching three adjacent buttress columns;
s4, simultaneously stretching the first buttress column 1, the third buttress column 3 and the fifth buttress column 5 in stages by using two jacks from top to bottom according to the calculated control forces of 15% F, 30% F, 60% F and 100% F;
s5, simultaneously stretching the second buttress column 2, the fourth buttress column 4 and the sixth buttress column 6 in stages by two jacks from bottom to top according to the solved control forces of 15% F, 30% F, 60% F and 100% F:
s6, grouting the pore channel;
s7, attaching wall columns to seal anchors;
and S8, curing the concrete and removing the end mould.
In the present embodiment, it is preferred that,
in the present embodiment, the mechanical operation process of tensioning by using the jack belongs to the known technology, and the specific operation steps and methods thereof are not described in detail herein.
In some embodiments, after the first tensioning, the jack is released and the jack is reinstalled for the second tensioning.
In some embodiments, the steel strands include a first steel strand tensioning the first, sixth, and fifth buttress columns 1, 6, and 5, a second steel strand tensioning the first, second, and third buttress columns 1, 2, and 3, a third steel strand tensioning the third, fourth, and fifth buttress columns 3, 4, and 5, a fourth steel strand tensioning the second, first, and sixth buttress columns 2, 1, and 6, a fifth steel strand tensioning the second, third, and fourth buttress columns 2, 3, and 4, and a sixth steel strand tensioning the fourth, fifth, and sixth buttress columns 4, 5, and 6.
In some embodiments, in step S4,
the sequence and the control force for tensioning the first end 1A and the second end 5A of the first steel strand are as follows in sequence: is 1A: 15%, 5A: 15%, 5A 30%, 5A 60%, 5A 100%, 1A 100%;
the sequence and the control force for tensioning the first end 1B and the second end 3B of the second steel strand are as follows in sequence: 1B: 15%, 3B: 15%, 3B: 30%, 3B: 60%, 3B: 100%, 1B: 100 percent;
the sequence and the control force for tensioning the first end 3F and the second end 5F of the third steel strand are as follows in sequence: 3F: 15%, 5F: 15%, 5F: 30%, 5F: 60%, 5F: 100%, 3F: 100 percent;
the sequence and the control force for tensioning the first end 2C and the second end 6C of the fourth steel strand are as follows in sequence: 2C: 15%, 6C: 15%, 6C: 30%, 6C: 60%, 6C: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 2D and the second end 4D of the fifth steel strand are as follows in sequence: 2D: 15%, 4D: 15%, 4D: 30%, 4D: 60%, 4D: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 4E and the second end 6E of the sixth steel strand are as follows in sequence: 4E: 15%, 6E: 15%, 6E: 30%, 6E: 60%, 6E: 100 percent and 4E:100 percent.
In some embodiments, the jack is 500T in size and is used in conjunction with a hydraulic pump.
In some embodiments, the first, second, third, fourth, fifth and sixth steel strands 1, 2, 3, 4, 5 and 6 are named after the tensioned coanda column, and the number thereof may be plural.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.
Claims (4)
1. A prestress tensioning process method for an ultra-large silo is characterized by comprising the following steps:
s1, respectively arranging multilayer pore canals on a first buttress column 1, a second buttress column 2, a third buttress column 3, a fourth buttress column 4, a fifth buttress column 5 and a sixth buttress column 6 of the silo, wherein the first buttress column 1, the second buttress column 2, the third buttress column 3, the fourth buttress column 4, the fifth buttress column 5 and the sixth buttress column 6 are arranged at intervals;
s2, according to the control stress of the design requirement, the control force of the tension anchor is worked out by 100% F, jack oil pressure gauge readings corresponding to the control forces of 15% F, 30% F, 60% F and 100% F are respectively worked out, and the elongation of the jack piston when the control forces are 15% F, 30% F, 60% F and 100% F is measured;
s3, steel strands penetrate through the multilayer pore channel, and each steel strand is suitable for stretching three adjacent buttress columns;
s4, simultaneously stretching the first buttress column 1, the third buttress column 3 and the fifth buttress column 5 in stages by using two jacks from top to bottom according to the calculated control forces of 15% F, 30% F, 60% F and 100% F;
s5, simultaneously stretching the second buttress column 2, the fourth buttress column 4 and the sixth buttress column 6 in stages by two jacks from bottom to top according to the solved control forces of 15% F, 30% F, 60% F and 100% F:
s6, grouting the pore channel;
s7, attaching wall columns to seal anchors;
and S8, curing the concrete and removing the end mould.
2. The method of claim 1, wherein the steel strands comprise first steel strands tensioning first buttress column 1, sixth buttress column 6, and fifth buttress column 5, second steel strands tensioning first buttress column 1, second buttress column 2, and third buttress column 3, third steel strands tensioning third buttress column 3, fourth buttress column 4, and fifth buttress column 5, fourth steel strands tensioning second buttress column 2, first buttress column 1, and sixth buttress column 6, fifth steel strands tensioning second buttress column 2, third buttress column 3, and fourth buttress column 4, and sixth steel strands tensioning fourth buttress column 4, fifth buttress column 5, and sixth buttress column 6.
3. The method of claim 3, wherein in the step of S4,
the sequence and the control force for tensioning the first end 1A and the second end 5A of the first steel strand are as follows in sequence: is 1A: 15%, 5A: 15%, 5A 30%, 5A 60%, 5A 100%, 1A 100%;
the sequence and the control force for tensioning the first end 1B and the second end 3B of the second steel strand are as follows in sequence: 1B: 15%, 3B: 15%, 3B: 30%, 3B: 60%, 3B: 100%, 1B: 100 percent;
the sequence and the control force for tensioning the first end 3F and the second end 5F of the third steel strand are as follows in sequence: 3F: 15%, 5F: 15%, 5F: 30%, 5F: 60%, 5F: 100%, 3F: 100 percent;
the sequence and the control force for tensioning the first end 2C and the second end 6C of the fourth steel strand are as follows in sequence: 2C: 15%, 6C: 15%, 6C: 30%, 6C: 60%, 6C: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 2D and the second end 4D of the fifth steel strand are as follows in sequence: 2D: 15%, 4D: 15%, 4D: 30%, 4D: 60%, 4D: 100%, 2C: 100 percent;
the sequence and the control force for tensioning the first end 4E and the second end 6E of the sixth steel strand are as follows in sequence: 4E: 15%, 6E: 15%, 6E: 30%, 6E: 60%, 6E: 100 percent and 4E:100 percent.
4. The method of claim 1, wherein the jack is 500T in size and is used with a hydraulic pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010343778.8A CN111502375A (en) | 2020-04-27 | 2020-04-27 | Prestress tensioning process method for ultra-large silo |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010343778.8A CN111502375A (en) | 2020-04-27 | 2020-04-27 | Prestress tensioning process method for ultra-large silo |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200652A (en) * | 2000-01-17 | 2001-07-27 | Ps Corp | Prestressing method for egg-shaped concrete vessel structure |
| CN103114753A (en) * | 2013-03-01 | 2013-05-22 | 杨晨 | Prestressed cylindrical silo with concealed anchoring end and processing method of stretch opening thereof |
| CN204418770U (en) * | 2014-11-17 | 2015-06-24 | 中国海洋石油总公司 | A kind of LNG of being applicable to holds the prestress wire buttress system of storage tank entirely |
| CN107687281A (en) * | 2016-08-05 | 2018-02-13 | 五冶集团上海有限公司 | A kind of prestressing force pull end slip-form template installation method |
-
2020
- 2020-04-27 CN CN202010343778.8A patent/CN111502375A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200652A (en) * | 2000-01-17 | 2001-07-27 | Ps Corp | Prestressing method for egg-shaped concrete vessel structure |
| CN103114753A (en) * | 2013-03-01 | 2013-05-22 | 杨晨 | Prestressed cylindrical silo with concealed anchoring end and processing method of stretch opening thereof |
| CN204418770U (en) * | 2014-11-17 | 2015-06-24 | 中国海洋石油总公司 | A kind of LNG of being applicable to holds the prestress wire buttress system of storage tank entirely |
| CN107687281A (en) * | 2016-08-05 | 2018-02-13 | 五冶集团上海有限公司 | A kind of prestressing force pull end slip-form template installation method |
Non-Patent Citations (1)
| Title |
|---|
| 蒋守锋: "大直径预应力混凝土筒仓的设计与经济性分析", 中国水泥, pages 109 - 112 * |
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