CN106760004A - A kind of construction method of the uniform joint bar in guide trough structure surface - Google Patents
A kind of construction method of the uniform joint bar in guide trough structure surface Download PDFInfo
- Publication number
- CN106760004A CN106760004A CN201611202132.8A CN201611202132A CN106760004A CN 106760004 A CN106760004 A CN 106760004A CN 201611202132 A CN201611202132 A CN 201611202132A CN 106760004 A CN106760004 A CN 106760004A
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- Prior art keywords
- reinforcing bar
- template
- sleeve
- sections
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 64
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000009415 formwork Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- 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
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/063—Re-usable forms
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The present invention is a kind of construction method of the uniform joint bar in guide trough structure surface, and guide trough structure includes concrete and protective refractory layer, a sections of reinforcing bar with the end of thread is screwed into a straight screw sleeve in work progress；The perforate on the template before concrete structure formwork installation；One end that sleeve is not screwed into reinforcing bar is withstood on the inner side of template, sleeve is fixedly connected with template by bolt；Formwork erection in place after, a sections of reinforcing bar and guide trough structure reinforcing bar are fixed；After pouring guide trough structure concrete, the bolt on the outside of template is back-outed, be screwed into the end of thread of b sections of reinforcing bar in the screwed hole for exposing by form removal, a sections of reinforcing bar and b sections of bar connecting is formed complete joint bar.This method ensure that the accuracy of joint bar position；Avoid the difficulty that sleeve is found after form removable；Avoid exposed steel bar from injuring workmen, reduce security risk；And template, bolt etc. are reusable, it is to avoid waste of material.
Description
Technical field
The invention belongs to civil construction project technical field of construction, more particularly to launching site water conservancy diversion groove construction method, specifically
It is related to the construction method of the guiding gutter uniform joint bar of normal concrete body structure surface,.
Background technology
For high temperature gas flow causes to damage to launching site guiding gutter normal concrete structure when preventing rocket or arm discharge, lead to
Often will normal concrete body structure surface lay one layer of refractory concrete overcoat, for ensure refractory concrete overcoat with it is common
Concrete structure is firmly connected, and prevents from coming off, and to be uniformly arranged between protective refractory layer and normal concrete structure sheaf a large amount of
Connection reinforcing bar, i.e., in the uniform pre- doweling of body structure surface in normal concrete structure construction, the every part embedment of joint bar
In normal concrete structure, another part whne protective refractory layer construct when, embedment refractory concrete overcoat in.Due to the joint bar
Temperature higher can be contacted, causes chemically-planted steel bar glue to fail, the construction method of chemically-planted steel bar is not applied to.Commonly mixed for guiding gutter
The facade of Xtah Crude Clay structure, beam slab bottom surface, supporting module is needed during due to concrete construction, it is impossible to reinforcing bar directly is inserted in into concrete knot
Structure surface, joint bar construction is relatively difficult, and the existing method in the ordinary construction layer surface uniform joint bar of construction mainly has following several
Kind：
1st, whole joint bar is fixed on normal concrete structure reinforcing bars by design attitude, the part of body structure surface will be stretched out, led to
The mode for crossing 90-degree bent is placed on stay in place form inner side, and form removal after casting concrete then looks for the pre-buried position of reinforcing bar
Put, pick chisel concrete, the bending part of joint bar is exposed, and joint bar is stretched.Every joint bar is constructed in this way.The method
Reinforcing bar is bent and is stretched again, after damaging reinforced steel bar strength, and form removable, found joint bar position difficulty, picked chisel concreter
Work amount is big, waste of materials, pollution scene.
2 is similar with method 1, and simply pre-buried joint bar is shorter, shortens bending part, and chisel amount, kink to be exposed are picked in reduction
After dividing and stretching, the reinforcing bar exposed by welding manner spreading.Welding sequence is this method increase, and welding can reduce reinforcing bar
Bonding strength.
3rd, in guiding gutter normal concrete structure construction, according to the design attitude of joint bar, uniformly opened on stay in place form
Hole, after formwork erection is good, by the hole in the certain length of joint bar insertion template, then casting concrete.Due to joint bar distribution
Comparatively dense, joint bar quantity is more, and every joint bar has certain length to be exposed at template outside, and security is poor during construction, template
Remove difficult, often needing to damage template could be by form removable.
Therefore there is certain technological deficiency in above-mentioned construction method.
The content of the invention
It is an object of the invention to provide a kind of construction method of the uniform joint bar in guide trough structure surface, to solve above-mentioned inserting
The defect problem of muscle construction method, plays its operational advantage, meets construction high standard, high efficiency requirement, reduces artificial and material
Waste.The purpose of the present invention is achieved through the following technical solutions.
A kind of construction method of the uniform joint bar in guide trough structure surface, the guide trough structure include concrete and
Protective refractory layer, the protective refractory layer is layed in concrete structure layer surface, and the joint bar part is embedded into concrete knot
Structure layer in, joint bar another part whne protective refractory layer construct when, embedment protective refractory layer in：Including construction procedure in detail below：
1）Processing straight screw sleeve, processing treat the b in a sections of reinforcing bar and protective refractory to be imbedded layer in embedded concrete structure layer
One end of section reinforcing bar, a sections of reinforcing bar and b sections of reinforcing bar is processed as the end of thread；
2）The end of thread of a sections of reinforcing bar is screwed into the sleeve；
3）After the completion of guide trough structure reinforcing bar colligation, before concrete structure formwork installation, according to the cloth of the joint bar being pre-designed
Seated position, the perforate in the template；
4）One end that the sleeve is not screwed into reinforcing bar is withstood on the inner side of the template, the screwed hole of sleeve and the perforate pair of template
Together, take bolt and pierce into perforate and be screwed into the screwed hole of the sleeve, consolidate with the template so as to a sections of sleeve of reinforcing bar will be connected to
Fixed connection；
5）Sleeve will be connected to be installed in place with the model sheetinstallat of a sections of reinforcing bar, a sections of reinforcing bar is led to the guide trough structure reinforcing bar
Cross colligation or electric welding is fixed；
6）Guide trough structure concrete is poured, guiding gutter concrete is formed；
7）Bolt on the outside of the template is back-outed, form removal；
8）After form removable, the end face and screwed hole of the described sleeve one end in Transducers Embedded in Concrete expose concrete structural surface,
The end of thread of b sections of reinforcing bar is screwed into the screwed hole for exposing, a sections of reinforcing bar and b sections of bar connecting is formed the complete joint bar；
9）Protective refractory layer is set.
Further, a sections of length of the end of thread of the end of thread and b section reinforcing bar of reinforcing bar is not less than screw shell length
Half.
Further, the template is aluminum alloy mould plate, template inner side brushing releasing agent.
Further, the perforate in the template is circular hole, and Circularhole diameter is less than the external diameter of the sleeve, more than sleeve
The diameter of screwed hole.
Further, step 4）The outside of template position corresponding with the perforate sets pad, and bolt passes through pad
Perforate is pierced into after piece again to be screwed into the screwed hole of the sleeve.
Further, step 4）Described in template inner side, the position of sleeve and opening contacts is provided with rubber blanket.
Further, step 3）Perforate in middle template is set to equally distributed plum blossom-shaped.
The beneficial effects of the invention are as follows：
1）Joint bar is passed through screw shell and is bolted in template by the method according to the position being pre-designed, in work progress
In will not shift, it is ensured that the positional accuracy of joint bar；
2）It is connected with template by by joint bar, it is ensured that after form removable, screw shell one end can expose concrete structural surface,
Avoid finding the difficulty of sleeve；
3）During model sheetinstallat, no lengths of rebar is exposed on the outside of template, it is to avoid exposed steel bar injures workmen, reduces safety wind
Danger；
4）Aluminum alloy mould plate is removed not to be influenceed by joint bar, removes convenient, will not damage template, and bolt, pad can make repeatedly
With, it is to avoid waste of material.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in more detail.
Brief description of the drawings
Fig. 1 is joint bar of the present invention and stay in place form connection diagram.
Fig. 2 is the schematic diagram after the completion of joint bar construction of the present invention.
Reference：
1.a sections of reinforcing bar；2. sleeve；3. rubber blanket；4. template；5. pad；6. bolt；7. guide trough structure surface；8.b sections of steel
Muscle.
Specific embodiment
As shown in Figure 1, 2, a kind of construction method of the uniform joint bar in guide trough structure surface, the guide trough structure includes mixed
Xtah Crude Clay structure layer and protective refractory layer, the protective refractory layer are layed in concrete structure layer surface, and the joint bar part is pre-
In embedded concrete structure layer, joint bar another part when protective refractory layer is constructed, in embedment protective refractory layer, including following tool
Body construction step：
1）Processing straight screw sleeve 2, processing are treated in a sections of reinforcing bar 1 and protective refractory to be imbedded layer in embedded concrete structure layer
B sections of reinforcing bar 8, one end of a sections of reinforcing bar and b sections of reinforcing bar is processed as the end of thread；
2）The end of thread of a sections of reinforcing bar 1 is screwed into the sleeve 2；
3）After the completion of guide trough structure reinforcing bar colligation, before the installation of concrete structure formwork 4, according to the cloth of the joint bar being pre-designed
Seated position, the perforate in the template；
4）One end that the sleeve 2 is not screwed into reinforcing bar is withstood on the inner side of the template 4, the screwed hole of sleeve 2 and opening for template 4
Hole is alignd, and is taken bolt 6 and is pierced into perforate and is screwed into the screwed hole of the sleeve 2, so as to be connected to a sections of sleeve of reinforcing bar 12 and institute
Template 4 is stated to be fixedly connected；
5）Sleeve 2 will be connected to be installed in place with the installation of template 4 of a sections of reinforcing bar 1, by a sections of reinforcing bar 1 and the guide trough structure steel
Muscle is fixed by colligation or electric welding；
6）Guide trough structure concrete is poured, guiding gutter concrete is formed；
7）The bolt 6 in the outside of the template 4 is back-outed, form removal 4；
8）After template 4 is removed, the end face and screwed hole of the one end of the sleeve 2 in Transducers Embedded in Concrete expose concrete structure table
Face, the end of thread of b sections of reinforcing bar 8 is screwed into the screwed hole for exposing, and a sections of reinforcing bar 1 and the b sections of connection of reinforcing bar 8 is formed complete institute
State joint bar；
9）Protective refractory layer is set.
The a sections of length of the end of thread of the end of thread and b section reinforcing bar of reinforcing bar 1 is not less than the half of screw shell length.Mould
Plate 4 is aluminum alloy mould plate, template inner side brushing releasing agent.Perforate in template 4 is circular hole, and Circularhole diameter is less than the sleeve
External diameter, more than the diameter of the screwed hole of sleeve.The outside of template 4 position corresponding with the perforate sets pad 5, and bolt 6 is worn
Cross after pad 5 and pierce into perforate again and be screwed into the screwed hole of the sleeve 2.
Step 4）Described in template 4 inner side, the position of sleeve 2 and opening contacts is provided with rubber blanket 3.
Step 3）Perforate in middle template 4 is set to equally distributed plum blossom-shaped.
Before concreting, the hole of plum blossom-shaped is evenly arranged in template, embedded bar one and supporting straight thread
Sleeve couples, and uses 2mm pads 5 on omnipotent adhesive plaster in the other end of straight screw sleeve, then be connected with template with bolt（Accompanying drawing
1）.
Attempt for a sections of threaded one section of reinforcing bar to be screwed into straight screw sleeve in research process of the invention, will be covered using stopper
The remaining hole of cylinder is clogged.Then by a for connecting together sections of reinforcing bar and sleeve, it is fixed on structure reinforcing bars according to design attitude, is covered
Outwards, during installation form, sleeve one end withstands on template inner side, after every reinforcing bar is installed according to the method described above, branch for cylinder one end
If template and casting concrete.After form removal, sleeve portion is found, stopper is taken out, there is screw thread one end to be screwed into b sections of reinforcing bar
Sleeve, completes construction.Because guiding gutter normal concrete structural volume is larger, one-time-concreting height is higher, and die plate pressure is larger,
Somewhat swollen mould screw shell is just buried in people's concrete completely, and under concreting impact, part joint bar can be shifted,
Form removal after sleeve finds difficult easily by inside concrete of nuzzling, and sleeve portion deviation is big, causes joint bar to be buried uneven.Cause
The fixation of bolt plays an important role in this present invention, before model sheetinstallat is installed, using bolt first by sleeve and a sections
Bar connecting is in template, then supporting module, and the fixation to joint bar position is extremely important, it is ensured that the accuracy of joint bar position,
Construction quality is greatly improved, the time of searching joint bar after form removal is also substantially shortened, the duration is saved.
Claims (7)
1. a kind of construction method of the uniform joint bar in guide trough structure surface, the guide trough structure includes concrete and resistance to
Fiery overcoat, the protective refractory layer is layed in concrete structure layer surface, and the joint bar part is embedded into concrete structure
Layer in, joint bar another part whne protective refractory layer construct when, embedment protective refractory layer in, it is characterised in that：Including in detail below
Construction procedure：
1）Processing straight screw sleeve, processing treat the b in a sections of reinforcing bar and protective refractory to be imbedded layer in embedded concrete structure layer
One end of section reinforcing bar, a sections of reinforcing bar and b sections of reinforcing bar is processed as the end of thread；
2）The end of thread of a sections of reinforcing bar is screwed into the sleeve；
3）After the completion of guide trough structure reinforcing bar colligation, before concrete structure formwork installation, according to the cloth of the joint bar being pre-designed
Seated position, the perforate in the template；
4）One end that the sleeve is not screwed into reinforcing bar is withstood on the inner side of the template, the screwed hole of sleeve and the perforate pair of template
Together, take bolt and pierce into perforate and be screwed into the screwed hole of the sleeve, consolidate with the template so as to a sections of sleeve of reinforcing bar will be connected to
Fixed connection；
5）Sleeve will be connected to be installed in place with the model sheetinstallat of a sections of reinforcing bar, a sections of reinforcing bar is led to the guide trough structure reinforcing bar
Cross colligation or electric welding is fixed；
6）Guide trough structure concrete is poured, guiding gutter concrete is formed；
7）Bolt on the outside of the template is back-outed, form removal；
8）After form removable, the end face and screwed hole of the described sleeve one end in Transducers Embedded in Concrete expose concrete structural surface,
The end of thread of b sections of reinforcing bar is screwed into the screwed hole for exposing, a sections of reinforcing bar and b sections of bar connecting is formed the complete joint bar；
9）Protective refractory layer is set.
2. construction method according to claim 1, it is characterised in that：The a sections of end of thread of the end of thread and b section reinforcing bar of reinforcing bar
Length not less than screw shell length half.
3. construction method according to claim 1, it is characterised in that：The template is aluminum alloy mould plate, and template inner side applies
Brush releasing agent.
4. construction method according to claim 1, it is characterised in that：Perforate in the template is circular hole, Circularhole diameter
Less than the external diameter of the sleeve, more than the diameter of the screwed hole of sleeve.
5. construction method according to claim 1, it is characterised in that：Step 4）The outside of the template and the perforate pair
The position answered sets pad, and bolt is screwed into the screwed hole of the sleeve through piercing into perforate again after pad.
6. construction method according to claim 1, it is characterised in that：Step 4）Described in template inner side, sleeve with open
The position of hole contact is provided with rubber blanket.
7. construction method according to claim 1, it is characterised in that：Step 3）Perforate in middle template is set to uniform point
The plum blossom-shaped of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202132.8A CN106760004A (en) | 2016-12-23 | 2016-12-23 | A kind of construction method of the uniform joint bar in guide trough structure surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202132.8A CN106760004A (en) | 2016-12-23 | 2016-12-23 | A kind of construction method of the uniform joint bar in guide trough structure surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106760004A true CN106760004A (en) | 2017-05-31 |
Family
ID=58897432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611202132.8A Pending CN106760004A (en) | 2016-12-23 | 2016-12-23 | A kind of construction method of the uniform joint bar in guide trough structure surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106760004A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013040A (en) * | 2017-06-02 | 2017-08-04 | 杭州宥盛建筑科技有限公司 | The construction method of floor is poured after a kind of sleeve built-in type |
| CN109159280A (en) * | 2018-08-17 | 2019-01-08 | 中国人民解放军63926部队 | A kind of launching workplace diversion trench i.e. dress formula ablation prefabricated component resistant to high temperatures and protective refractory layer construction method |
| CN109610737A (en) * | 2018-12-06 | 2019-04-12 | 中铁十四局集团大盾构工程有限公司 | One kind being molded into concrete embedded reinforcing bar connector and construction technology |
| CN109779022A (en) * | 2019-02-22 | 2019-05-21 | 重庆大学 | A kind of node that can be rotated under fire |
| CN114108836A (en) * | 2021-11-08 | 2022-03-01 | 中国一冶集团有限公司 | Pre-buried installation device and installation method thereof |
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| US5050364A (en) * | 1990-03-21 | 1991-09-24 | Anchor Bolt, Inc. | Two-part anchor bolt holder |
| JPH10115013A (en) * | 1996-10-08 | 1998-05-06 | Akagi:Kk | Insert for constructing scalfold |
| 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 |
| CN202689344U (en) * | 2012-05-11 | 2013-01-23 | 江苏时代建设工程有限公司 | Tensioning bar connecting device |
| CN204001720U (en) * | 2014-08-08 | 2014-12-10 | 中建七局(上海)有限公司 | Service sleeve in a kind of constructional column |
| CN204919996U (en) * | 2015-07-23 | 2015-12-30 | 中国新兴保信建设总公司 | Pre -buried connection structure of secondary structure reinforcing bar sleeve |
| CN105735487A (en) * | 2016-03-24 | 2016-07-06 | 天津住宅集团建设工程总承包有限公司 | Wall tied reinforcement component |
-
2016
- 2016-12-23 CN CN201611202132.8A patent/CN106760004A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5050364A (en) * | 1990-03-21 | 1991-09-24 | Anchor Bolt, Inc. | Two-part anchor bolt holder |
| JPH10115013A (en) * | 1996-10-08 | 1998-05-06 | Akagi:Kk | Insert for constructing scalfold |
| 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 |
| CN202689344U (en) * | 2012-05-11 | 2013-01-23 | 江苏时代建设工程有限公司 | Tensioning bar connecting device |
| CN204001720U (en) * | 2014-08-08 | 2014-12-10 | 中建七局(上海)有限公司 | Service sleeve in a kind of constructional column |
| CN204919996U (en) * | 2015-07-23 | 2015-12-30 | 中国新兴保信建设总公司 | Pre -buried connection structure of secondary structure reinforcing bar sleeve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013040A (en) * | 2017-06-02 | 2017-08-04 | 杭州宥盛建筑科技有限公司 | The construction method of floor is poured after a kind of sleeve built-in type |
| CN109159280A (en) * | 2018-08-17 | 2019-01-08 | 中国人民解放军63926部队 | A kind of launching workplace diversion trench i.e. dress formula ablation prefabricated component resistant to high temperatures and protective refractory layer construction method |
| CN109159280B (en) * | 2018-08-17 | 2023-12-05 | 中国人民解放军63926部队 | Ready-to-install high-temperature ablation-resistant prefabricated member for launching station diversion trench and construction method of fire-resistant protective layer |
| CN109610737A (en) * | 2018-12-06 | 2019-04-12 | 中铁十四局集团大盾构工程有限公司 | One kind being molded into concrete embedded reinforcing bar connector and construction technology |
| CN109779022A (en) * | 2019-02-22 | 2019-05-21 | 重庆大学 | A kind of node that can be rotated under fire |
| CN109779022B (en) * | 2019-02-22 | 2024-02-02 | 重庆大学 | Node capable of rotating under fire disaster |
| CN114108836A (en) * | 2021-11-08 | 2022-03-01 | 中国一冶集团有限公司 | Pre-buried installation device and installation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |