CN107100173A - A kind of construction method reinforced to heat supply pipeline and threeway - Google Patents
A kind of construction method reinforced to heat supply pipeline and threeway Download PDFInfo
- Publication number
- CN107100173A CN107100173A CN201710307549.9A CN201710307549A CN107100173A CN 107100173 A CN107100173 A CN 107100173A CN 201710307549 A CN201710307549 A CN 201710307549A CN 107100173 A CN107100173 A CN 107100173A
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- Prior art keywords
- groove
- backfill
- threeway
- heat supply
- soil
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/12—Back-filling of foundation trenches or ditches
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to a kind of construction method reinforced to heat supply pipeline and threeway, comprise the following steps：Groove is excavated according to desired depth；Soil property detection is carried out to groove, appropriate base treatment is carried out to the bottom land of groove according to soil property testing result；Heat supply pipeline and threeway are applied in groove；By heat supply pipeline together with three-way welding；Region into groove where threeway backfills the 37 lime earth of the first scheduled volume, and into groove, other regions backfill the middle sand of the second scheduled volume；The powdery backfill of backfill covering 37 lime earth and middle sand into groove, and powdery backfill is tamped；The original soil of backfill covering powdery backfill into groove, and original soil is tamped.The possibility that stress rupture occurs at the threeway of heating network can be effectively reduced by using the construction method of the present invention.
Description
Technical field
The invention belongs to the laying method field of heat supply pipeline, and in particular to a kind of that heat supply pipeline and threeway are reinforced
Construction method.
Background technology
In the stress checking calculation of whole heating network, the larger place of stress concentrates on the positions such as threeway, elbow, knuckle.
Due to the periodic temperature change repeatedly of heat supply pipeline itself, easily occur fatigue deformation in stress larger part, and finally lead
Cause destruction.The reinforcement of traditional three-port structure, simply strengthens making an issue of in itself around component, for example, increase tube wall thickness, selection in advance
The measures such as the reinforced threeway such as type processed, draw type, increase stiffening plate, but in medium temperature height, (temperature is more than 90 for these measures
DEG C), pressure big (pressure is more than 1.6MPa), it is bigbore in the case of, the deformation of threeway and fault rate are still very high.Unlimited
Increase tube wall thickness, set up reinforcement measure, can also greatly improve construction cost, and the manufacture of equipment and materials, procurement cycle is long,
Product qualification rate can not also ensure.
In addition, in the running of heating network in the winter time, once threeway ruptures, then cause water leakage fault occur,
And be difficult to search trouble point, even if trouble-shooting point is also required to spend many times to repair, the maintenance period stops heat supply and held
Easily cause serious social influence.
The content of the invention
Based on above mentioned problem, it is an object of the invention to provide a kind of construction party reinforced to heat supply pipeline and threeway
Method, the possibility that stress rupture occurs for threeway can be effectively reduced by this method.
The present invention provides a kind of construction method reinforced to heat supply pipeline and threeway, comprises the following steps：
S1, according to desired depth excavate groove；
S2, soil property detection is carried out to the groove, it is appropriate that the bottom land of the groove is carried out according to soil property testing result
Base treatment；
S3, heat supply pipeline and threeway be applied in the groove；
S4, by the heat supply pipeline together with the three-way welding；
S5, the region into the groove where the threeway backfill the 37 lime earth of the first scheduled volume, to the groove
Other interior regions backfill the middle sand of the second scheduled volume.
S6, into the groove backfill cover the powdery backfill of the 37 lime earth and the middle sand, and to the powder
Shape backfill is tamped；
S7, into the groove backfill covering powdery backfill original soil, and the original soil is tamped.
Preferably, in step s 5, the top of the 37 lime earth of backfill higher than the threeway top apart from h2
For 200~300mm.
Preferably, in step s 5, seen along the direction of the bottom land of the vertical groove, the 37 lime earth of backfill
The area of coverage is the π m of 4 π~92, the corner-centric of the threeway overlaps with the geometric center of the coverage.
Preferably, in step s 6, the depth h of the powdery backfill of backfill1>=300mm, the original soil of backfill
Depth h0>1000mm。
Preferably, in step s 6, the compacted coefficient of powdery backfill and original soil is all higher than 0.94.
Preferably, in step s 2, if the result of soil property detection is original soil soil property, laid in the bottom land of the groove
Middle sand bedding course, if the result of detection is non-original soil soil property, carries out soil removal and replacement work.
Preferably, in step s 2, if the result of soil property detection is original soil soil property, laid in the bottom land of the groove
The middle sand bedding course of 200~300mm thickness.
Preferably, in step s 4, after the completion of the welding between the heat supply pipeline and the threeway, to what is be welded
The heat supply pipeline and the threeway carry out flaw detection.
According to the construction method reinforced to heat supply pipeline and threeway of the present invention, this method passes through to different in groove
Heat supply pipeline and threeway are reinforced in the region backfill different with different levels execution, especially to threeway region pseudo-ginseng ash
The mode of earthen backfill is reinforced to threeway, it is no longer necessary to by increasing tube wall thickness, set up the modes such as reinforcement measure come plus
The intensity of strong threeway.Therefore, the construction method can efficiently reduce threeway and threeway and the junction of heat supply pipeline occurs
The possibility of stress rupture.The construction method reinforced to heat supply pipeline and threeway of the invention is practical, easy to operate, effect
Substantially, and do not increase construction costs, be especially suitable for implementing, using and promote.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described.In all of the figs, similar element
Or part is general by similar reference mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the flow chart of the construction method reinforced to heat supply pipeline and threeway according to the embodiment of the present invention；
Fig. 2 is the structure of threeway in the construction method reinforced to heat supply pipeline and threeway according to the embodiment of the present invention
Schematic diagram；
Fig. 3 is threeway backfill portion in the construction method reinforced to heat supply pipeline and threeway according to the embodiment of the present invention
The schematic diagram in position cross section.
Description of reference numerals：1st, heat supply pipeline；2nd, threeway；3rd, 37 lime earth backfill region；31st, corner-centric.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this
Enclose.
Fig. 1 is the flow chart of the construction method reinforced to heat supply pipeline and threeway according to the embodiment of the present invention, such as
Shown in Fig. 1, the construction method comprises the following steps：
S1, according to desired depth excavate groove；
S2, soil property detection is carried out to groove, carry out appropriate base treatment to the bottom land of groove according to soil property testing result；
S3, heat supply pipeline 1 and threeway 2 be applied in groove；
S4, heat supply pipeline 1 welded together with threeway 2；
S5, the region into groove where threeway 2 backfill the 37 lime earth of the first scheduled volume, and into groove, other regions are equal
Backfill the middle sand of the second scheduled volume；
S6, into groove backfill covering 37 lime earth and middle sand powdery backfill, and powdery backfill is tamped；
S7, into groove backfill covering powdery backfill original soil, and original soil is tamped.
According to the construction method reinforced to heat supply pipeline and threeway of the present invention, this method passes through to different in groove
Heat supply pipeline and threeway are reinforced in the region backfill different with different levels execution, especially to threeway region pseudo-ginseng ash
The mode of earthen backfill is reinforced to threeway, it is no longer necessary to by increasing tube wall thickness, set up the modes such as reinforcement measure come plus
The intensity of strong threeway.Therefore, the construction method can efficiently reduce threeway and threeway and the junction of heat supply pipeline occurs
The possibility of stress rupture.The construction method reinforced to heat supply pipeline and threeway of the invention is practical, easy to operate, effect
Substantially, and do not increase construction costs, be especially suitable for implementing, using and promote.
Used 37 lime earth is a kind of engineering material that those skilled in the art commonly use in step s 5, is by 30%
Lime and 70% loess mix even mix.The lime and loess mixed according to the ratio is very rigid after solidification, when
Between it is longer, intensity is bigger, and threeway 2 can be protected well.
In the present embodiment, in step s 5, the region into groove where threeway 2 backfills the pseudo-ginseng ash of the first scheduled volume
Soil, into groove, other regions backfill the middle sand of the second scheduled volume.Wherein, the first scheduled volume and the main basis of the second scheduled volume
The caliber of heat supply pipeline 1 is determined.Fig. 2 is to applying that heat supply pipeline and threeway are reinforced according to the embodiment of the present invention
The structural representation of threeway in work method, Fig. 3 is to applying that heat supply pipeline and threeway are reinforced according to the embodiment of the present invention
Threeway backfills the schematic diagram in position cross section in work method, as shown in Figures 2 and 3, three backfilled in 37 lime earth backfill region 3
The top of seven dirt is higher than the top of threeway 2 apart from h2For 200~300mm.In addition, the direction of the bottom land along vertical trench
See, the area of the coverage in 37 lime earth backfill region 3 is the π m of 4 π~92, the corner-centric of threeway and the geometry of coverage
Circular or polygon can be substantially presented in center superposition, the shape of coverage.Threeway 2, pseudo-ginseng are reinforced by such method
Whole threeway 2 can be done overall enclosed and reinforced by dirt backfill region 3, it is to avoid some positions of threeway 2 meet with stresses
Excessive situation.
In the present embodiment, in step s 2, if the result of soil property detection is original soil soil property, spread in the bottom land of groove
If middle sand bedding course, and as shown in figure 3, the thickness h of middle sand bedding course3For 200~300mm.If the result of detection is non-original soil soil
Matter, then carry out soil removal and replacement work.Original soil is not enter the soil excavated, therefore its compactness highest without carrying out other processing again, directly
It is connected in laying thereon after sand bedding course, then heating network is laid on middle sand bedding course.But if the soil of other soil properties,
Ground (groove) bearing capacity is likely to result in because its compactness is relatively low not enough, therefore carries out soil removal and replacement work, ground can be improved
The bearing capacity of (groove).Soil removal and replacement works specific method to dig out after a range of soil of channel bottom, changes with sand, Shi Dengcai
Expect and compaction in layers.Wherein, in soil removal and replacement work the material of bed course laid and the depth of soil removal and replacement by the related inspection of Di Kan departments
Test report to determine, different soil properties will need using different courses and set different cushion thicknesses.
In addition, in step s 4, in order to ensure welded integrality, reliability, security and usability,
After the completion of welding between heat supply pipeline 1 and threeway 2, flaw detection is carried out to the heat supply pipeline 1 being welded and threeway 2.Often
Flaw detection method has x-ray flaw detection, ultrasonic examination, magnetic powder inspection etc..In addition, during welding, weld seam
All using butting grooves weld seam, all weld seams use bottom argon arc welding, and manual electric arc welding capping is pressed after the completion of welding and wanted
Ask and flaw detection is carried out to pipeline.
In the present embodiment, in step s 6, as shown in Figures 2 and 3, the depth h of the powdery backfill of backfill1≥
300mm, the depth h of the original soil of backfill0>1000mm.Such back-filling way ensure that the structure safety of heating network, it is to avoid
Cause groove to collapse sinking due to backfilling unreal, also avoid pipe deforming or even the damage thereby resulted in.Powdery is backfilled
The compacted coefficient of soil and original soil is greater than 0.94, and compacted coefficient refers to the volume ratio before compacting and after compacting.Because soil property exists
Can be more open when backfill, it is therefore desirable to tamped, and ensure that compacted coefficient is more than 0.94 and can prevent surface subsidence.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as in the absence of structure punching
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (8)
1. a kind of construction method reinforced to heat supply pipeline and threeway, it is characterised in that comprise the following steps：
S1, according to desired depth excavate groove；
S2, soil property detection is carried out to the groove, carry out appropriate basic unit to the bottom land of the groove according to soil property testing result
Processing；
S3, heat supply pipeline and threeway be applied in the groove；
S4, by the heat supply pipeline together with the three-way welding；
S5, into the groove, region where the threeway backfills the 37 lime earth of the first scheduled volume, into the groove its
His region backfills the middle sand of the second scheduled volume；
S6, into the groove backfill cover the powdery backfill of the 37 lime earth and the middle sand, and the powdery is returned
Banket and tamped；
S7, into the groove backfill covering powdery backfill original soil, and the original soil is tamped.
2. construction method according to claim 1, it is characterised in that in step s 5, the 37 lime earth of backfill
Top is higher than the top of the threeway apart from h2For 200~300mm.
3. construction method according to claim 2, it is characterised in that in step s 5, along the groove of the vertical groove
The direction at bottom sees, the area of the coverage of the 37 lime earth of backfill is the π m of 4 π~92, the corner-centric of the threeway with
The geometric center of the coverage is overlapped.
4. the construction method according to any one of Claim 1-3, it is characterised in that in step s 6, backfill it is described
The depth h of powdery backfill1>=300mm, the depth h of the original soil of backfill0>1000mm。
5. the rammer of construction method according to claim 4, it is characterised in that in step s 6, powdery backfill and original soil
Real coefficient is all higher than 0.94.
6. the construction method according to any one of Claim 1-3, it is characterised in that in step s 2, if soil property is examined
The result of survey is original soil soil property, then the sand bedding course in the bottom land laying of the groove, if the result of detection is non-original soil soil property,
Then carry out soil removal and replacement work.
7. construction method according to claim 6, it is characterised in that in step s 2, if the result of soil property detection is
Original soil soil property, then the groove bottom land lay 200~300mm thickness middle sand bedding course.
8. the construction method according to any one of Claim 1-3, it is characterised in that in step s 4, in the heat supply
After the completion of welding between pipeline and the threeway, flaw detection is carried out to the heat supply pipeline being welded and the threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307549.9A CN107100173A (en) | 2017-05-04 | 2017-05-04 | A kind of construction method reinforced to heat supply pipeline and threeway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307549.9A CN107100173A (en) | 2017-05-04 | 2017-05-04 | A kind of construction method reinforced to heat supply pipeline and threeway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107100173A true CN107100173A (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307549.9A Pending CN107100173A (en) | 2017-05-04 | 2017-05-04 | A kind of construction method reinforced to heat supply pipeline and threeway |
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| Country | Link |
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| CN (1) | CN107100173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775018A (en) * | 2018-06-11 | 2018-11-09 | 北京市新港永豪水务工程有限公司 | A kind of plateau penstock backfilling process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737560A (en) * | 2009-12-30 | 2010-06-16 | 刘枫 | Ordinary state uncompensated direct burying method of high-temperature hot water pipeline |
-
2017
- 2017-05-04 CN CN201710307549.9A patent/CN107100173A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737560A (en) * | 2009-12-30 | 2010-06-16 | 刘枫 | Ordinary state uncompensated direct burying method of high-temperature hot water pipeline |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775018A (en) * | 2018-06-11 | 2018-11-09 | 北京市新港永豪水务工程有限公司 | A kind of plateau penstock backfilling process |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180330 Address after: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street Applicant after: Alex Hua Tian Baotou design and Research Institute Co., Ltd. Applicant after: Huatian Nanjing Engineering & Technology Corporation, MCC Address before: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street No. 45 Applicant before: Huatian Nanjing Engineering & Technology Corporation, MCC |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190530 Address after: 014010 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Applicant after: Zhongye Northwest Engineering Technology Co., Ltd. Address before: 014010 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Applicant before: Alex Hua Tian Baotou design and Research Institute Co., Ltd. Applicant before: Huatian Nanjing Engineering & Technology Corporation, MCC |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170829 |