CN108930332A - A kind of launching workplace " W " type diversion trench direct current section top refractory concrete protective layer construction method - Google Patents
A kind of launching workplace " W " type diversion trench direct current section top refractory concrete protective layer construction method Download PDFInfo
- Publication number
- CN108930332A CN108930332A CN201810938591.5A CN201810938591A CN108930332A CN 108930332 A CN108930332 A CN 108930332A CN 201810938591 A CN201810938591 A CN 201810938591A CN 108930332 A CN108930332 A CN 108930332A
- Authority
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- China
- Prior art keywords
- direct current
- current section
- protective layer
- refractory concrete
- concrete
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000011241 protective layer Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 23
- 239000010410 layer Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000009415 formwork Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses refractory concrete protective layer construction methods at the top of a kind of launching workplace " W " type diversion trench direct current section, formwork is poured and is combined with scraper plate striking, that is: arc top part twice formwork, be poured into maximum absolute altitude, then with special arc scraper plate complete surface molding.The method of the present invention can save the production of top curve template and install, and simplify construction technology, shorten the construction time；And without the limitation of top curve template, the equipment of vibrating such as vibrating spear can be made full use of to vibrate concrete mix, keep concrete more closely knit, improve pouring quality.
Description
Technical field
The invention belongs to engineering construction technology field more particularly to launching workplace water conservancy diversion groove construction methods, specifically relate to
And the cast in situs construction method of " W " type diversion trench impact zone top refractory concrete protective layer.
Technical background
The major function of launching workplace diversion trench is by the high-temperature high-flow rate wake flame of boost motor igniting generation when rocket launching
It is discharged other than pylon or tunnel by design direction, prevents combustion gas to be tempered or rush at the facility on ground, to guarantee rocket engine
Normal work, to eliminate its damage to peripheral facilities.The main structure of diversion trench is mostly armored concrete, work at present
Layer is cast-in-place fire resisting armored concrete protective layer, to resist high temperature thermal shocking when rocket launching.Launching workplace diversion trench
Cast-in-place shaping is used always, and material therefor is mostly high alumina system castable, is come into operation after natural curing after casting complete.
" W " type diversion trench is a kind of diversion trench pattern that underground launching workplace uses, and the protective refractory layer of this structure is adopted
There is preferable globality with cast-in-place construction technique.The handover position on two cylindrical surfaces of its direct current section approximation, the every side of direct current section,
Lower part is cylindrical surface, is plane close to top, and top is arc surface, as shown in Figure 1, dotted line is refractory concrete protective layer in figure
Granule surface contral line.Direct current section especially top direct-injection area is washed away by high temperature air blast, and the quality of construction quality is to water conservancy diversion
Slot service performance and service life have a major impact.
When the arc-shaped top cast-in-place construction of " W " type diversion trench direct current section, the usually last construction part of direct current section, tradition
Formwork casting craft it is complicated, template is not easy to install, and concrete vibrating difficulty is big, influences construction quality, and transmitting is easily caused to use
Too fast ablation in the process is so as to shorten service life.It needs to explore a kind of new construction method, is guaranteeing top design radian
With construction technology simplified while concrete pouring quality, shorten construction period.
Summary of the invention
It is an object of the invention to for the arc-shaped top refractory concrete protection of launching workplace " W " type diversion trench direct current section
Layer construction, proposes a kind of formwork and pours the construction method combined with scraper plate striking.The purpose of the present invention is pass through following skill
What art scheme was realized:
The present invention abandons the construction method poured completely using formwork at the top of original diversion trench direct current section, is poured and is scraped using formwork
The construction technology that plate striking combines is constructed, it may be assumed that arc top part twice formwork, be poured into maximum absolute altitude, then with spy
Arc scraper plate processed completes the molding on surface.
Including construction procedure in detail below:
1) straight template is installed, template top surface is lower than refractory concrete protective layer designed elevation at the top of direct current section；
2) refractory concrete is poured to straight template top surface, into one-time-concreting；
3) it is poured into after one-time-concreting face, adds 1 ~ 2 layer of long lumps of wood in straight template top surface, reach the mesh for increasing form height
, so that long lumps of wood top surface is higher than refractory concrete protective layer designed elevation at the top of direct current section；
4) continue casting concrete and formed secondary to long lumps of wood top surface until concrete surface is higher than the highest control point on side wall
Pour face；
5) the long lumps of wood added is removed when concrete initial set；
6) scraper plate is made according to refractory concrete protective layer design radian at the top of direct current section, with scraper plate cambered surface along straight template top surface
By any excess concrete excision at direct current section top；
7) after the completion of cutting off, floating processing is carried out to surface with trowel, obtains refractory concrete protection at the top of molding direct current section
At the top of layer arc.
Further, when installing straight template in step 1), template top surface is lower than refractory concrete protective layer at the top of direct current section
90 ~ 110mm of designed elevation.
Further, after the long lumps of wood is provided in step 3), long lumps of wood top surface is higher than refractory concrete at the top of direct current section
10 ~ 50mm of protective layer designed elevation.
Beneficial effects of the present invention:
A kind of formwork proposed by the present invention pours the construction technology combined with scraper plate striking, can be used for launching workplace " W " type and leads
The arc-shaped top refractory concrete protective layer construction of chute direct current section, has the advantage that
1) simple process: due to eliminating the production of top curve template and installing, construction technology is enormously simplified, shortens and applies
Between working hour.
2) pouring quality is reliable: without the limitation of top curve template, vibrating spear etc. can be made full use of to vibrate equipment pair
Concrete mix vibrates, and keeps concrete more closely knit, improves pouring quality.
Detailed description of the invention
Fig. 1 is the side projection schematic diagram of " W " type diversion trench；
Fig. 2 is construction method step schematic diagram (the straight mould of a- installs)；
Fig. 3 is construction method step schematic diagram (concreting of b-)；
Fig. 4 is construction method step schematic diagram (the long lumps of wood is arranged in c-)；
Fig. 5 is construction method step schematic diagram (d- second coagulation soil pours)；
Fig. 6 is construction method step schematic diagram (e- concrete initial set)；
Fig. 7 is construction method step schematic diagram (construction of f- scraper plate)；
Fig. 8 is construction method step schematic diagram (molding at the top of g-).
Appended drawing reference:
1. direct current section；2. control line；2-1. control point；3. straight template；4. one-time-concreting face；5. the long lumps of wood；6. two times pour face；
7. concrete initial set face；8. to cut-out；9. scraper plate；10. the refractory concrete protective layer of direct current section top curve.
Specific embodiment
Fig. 2 ~ 8 are the workflow of refractory concrete protective layer construction method at the top of launching workplace " W " type diversion trench direct current section
Journey,
Specific steps are as follows:
1) as shown in Fig. 2, installing straight template 3, template top surface is lower than 1 top refractory concrete protective layer designed elevation of direct current section.
2) as shown in figure 3, pouring refractory concrete to straight 3 top surface of template, one-time-concreting is carried out.
3) as shown in figure 4, being poured into after one-time-concreting face 4, it is rectangular that one to two layers and then is added in straight 3 top surface of template
Wood 5, achievees the purpose that increase form height, makes a little higher than 1 top refractory concrete protective layer of the direct current section design in long 5 top surface of the lumps of wood
Absolute altitude.
4) as shown in figure 5, continuing casting concrete immediately to long 5 top surface of the lumps of wood, the protection of 1 top refractory concrete of direct current section
Layer designed elevation passed through before control line 2 and control point 2-1 be labeled on side wall concrete basal plane, i.e., concrete at this time
Surface is higher than the highest control point on side wall, and formation is secondary to pour face 6.
5) as shown in fig. 6, removing the long lumps of wood 5 added, i.e. concrete initial set face 7 when concrete initial set, pay attention to initial set
The assurance of time, there can be no deformations of obviously collapsing for concrete when removing the long lumps of wood, while also having plasticity；
6) as shown in fig. 7, scraper plate is made according to 1 top refractory concrete protective layer of direct current section design radian, with scraper plate cambered surface edge
Straight template top surface, direct current section top concrete initial set face place's any excess concrete is cut off.
7) it as shown in figure 8, carrying out floating processing to surface with trowel after the completion of excision, obtains at the top of molding arc.
There is the following in the present embodiment:
A, the control line that direct current section refractory concrete protective layer designed elevation is marked out on side wall, especially marks out direct current section
Elevation of top.
B, processing and fabricating scraper plate, the diameter of scraper plate cambered surface are 460mm, arch section maximum height 150mm.
C, straight template is installed, template top surface is lower than direct current section top design absolute altitude about 100mm.
D, it conveys near refractory concrete mixture to direct current section, the concrete perfusion into straight template, and vibration compacting, pours
Refractory concrete is to straight template top surface.
E, the concrete mix for clearing up straight die head adherency, then adds the long lumps of wood in top two sides respectively, rectangular
It is connected and fixed between wood and straight template top surface or the long lumps of wood of upper and lower level with iron nail, long lumps of wood top surface is made to be higher than direct current section top design
10 ~ 50mm of absolute altitude.
Claims (3)
1. refractory concrete protective layer construction method at the top of a kind of launching workplace " W " type diversion trench direct current section, the direct current section
In the middle part of " W " type diversion trench, refractory concrete protective layer absolute altitude is designed before construction, and by designed elevation in side wall concrete
Control line and control point are drawn on basal plane, it is characterised in that: including construction procedure in detail below:
1) straight template is installed, template top surface is lower than refractory concrete protective layer designed elevation at the top of direct current section；
2) refractory concrete is poured to straight template top surface, carries out one-time-concreting；
3) it is poured into after one-time-concreting face, adds 1 ~ 2 layer of long lumps of wood in straight template top surface, reach the mesh for increasing form height
, so that long lumps of wood top surface is higher than refractory concrete protective layer designed elevation at the top of direct current section；
4) continue casting concrete and formed secondary to long lumps of wood top surface until concrete surface is higher than the highest control point on side wall
Pour face；
5) the long lumps of wood added is removed when concrete initial set；
6) scraper plate is made according to refractory concrete protective layer design radian at the top of direct current section, with scraper plate cambered surface along straight template top surface
By any excess concrete excision at direct current section top；
7) after the completion of cutting off, floating processing is carried out to surface with trowel, obtains refractory concrete protection at the top of molding direct current section
At the top of layer arc.
2. construction method according to claim 1, it is characterised in that: when installing straight template in step 1), template top surface is low
90 ~ 110mm of refractory concrete protective layer designed elevation at the top of direct current section.
3. construction method according to claim 1, it is characterised in that: after the long lumps of wood is provided in step 3), the long lumps of wood
Top surface is higher than 10 ~ 50mm of refractory concrete protective layer designed elevation at the top of direct current section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938591.5A CN108930332B (en) | 2018-08-17 | 2018-08-17 | Construction method for fire-resistant concrete protective layer on top of direct-current section of W-shaped diversion trench at launching station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938591.5A CN108930332B (en) | 2018-08-17 | 2018-08-17 | Construction method for fire-resistant concrete protective layer on top of direct-current section of W-shaped diversion trench at launching station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108930332A true CN108930332A (en) | 2018-12-04 |
| CN108930332B CN108930332B (en) | 2020-05-08 |
Family
ID=64446059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810938591.5A Expired - Fee Related CN108930332B (en) | 2018-08-17 | 2018-08-17 | Construction method for fire-resistant concrete protective layer on top of direct-current section of W-shaped diversion trench at launching station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108930332B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562189A (en) * | 2020-05-31 | 2020-08-21 | 太原理工大学 | Ultrahigh-temperature gas jet erosion test device for diversion trench material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2299411C1 (en) * | 2005-12-23 | 2007-05-20 | Федеральное Государственное унитарное предприятие "Государственное научно-производственное предприятие "Сплав" | Test bed for simulation of missile jamming in launching tube |
| CN101475381A (en) * | 2008-01-04 | 2009-07-08 | 郑州登峰熔料有限公司 | Diversion trench high-strength low ablation rate castable concrete for launching rocket |
-
2018
- 2018-08-17 CN CN201810938591.5A patent/CN108930332B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2299411C1 (en) * | 2005-12-23 | 2007-05-20 | Федеральное Государственное унитарное предприятие "Государственное научно-производственное предприятие "Сплав" | Test bed for simulation of missile jamming in launching tube |
| CN101475381A (en) * | 2008-01-04 | 2009-07-08 | 郑州登峰熔料有限公司 | Diversion trench high-strength low ablation rate castable concrete for launching rocket |
Non-Patent Citations (6)
| Title |
|---|
| 孙培详: "《混凝土工程施工技术》", 30 November 2012, 中国铁道出版社 * |
| 崔吉俊: "《航天发射试验工程》", 31 December 2010, 中国宇航出版社 * |
| 彭显平: "《铸造技能基础实训》", 31 August 2010, 中南大学出版社 * |
| 机械工人应知考核题解丛书编审委员会: "《铸造工应知考核题解》", 30 April 1999, 机械工业出版社 * |
| 蒋宗生等: "导流槽工程施工工艺与质量监控", 《太原科技》 * |
| 陈昌泉: "《机械加工法 上》", 31 December 1983, 大中国图书公司 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562189A (en) * | 2020-05-31 | 2020-08-21 | 太原理工大学 | Ultrahigh-temperature gas jet erosion test device for diversion trench material |
| CN111562189B (en) * | 2020-05-31 | 2022-06-28 | 太原理工大学 | Ultrahigh-temperature gas jet erosion test device for diversion trench material |
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| Publication number | Publication date |
|---|---|
| CN108930332B (en) | 2020-05-08 |
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Granted publication date: 20200508 |