CN108316327A - A kind of open caisson template and its construction method - Google Patents
A kind of open caisson template and its construction method Download PDFInfo
- Publication number
- CN108316327A CN108316327A CN201810171052.3A CN201810171052A CN108316327A CN 108316327 A CN108316327 A CN 108316327A CN 201810171052 A CN201810171052 A CN 201810171052A CN 108316327 A CN108316327 A CN 108316327A
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- Prior art keywords
- template
- open caisson
- stupefied
- construction method
- latch closure
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims description 14
- 238000009415 formwork Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 3
- 241000357293 Leptobrama muelleri Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The present invention relates to Construction Technology field, specifically a kind of open caisson template and its construction method, including several standard segments template, each standard segment template include modular unit and support unit, the modular unit includes：Panel, several masters be stupefied, connector, spiral latch closure, back cord, and the support unit includes：Bearing diagonal, supporting boot and Screw arbor with nut at both-ends, the stupefied parallel arrangement successively of several masters is arranged on panel, the described back cord setting the stupefied top both sides of master and perpendicular to be set to several masters it is stupefied on, the side of the back cord connects bearing diagonal by connector, it is connected by supporting boot between two bearing diagonals in the template of same standard segment, is connected by spiral latch closure between the template of adjacent modular segment.The scope of application of the construction method is wider, easy construction, and reliability is high, and concrete surface is smoother smooth, overall beautiful.In addition, the speed of application of the present invention is fast, duration effect is apparent and loss is few, it is at low cost.
Description
[technical field]
The present invention relates to Construction Technology field, specifically a kind of open caisson template and its construction method.
[background technology]
In open caisson template construction, traditional mold method is that template is processed into typified form, but this by design radial
The versatility of kind way template is bad, and formwork cost is once amortized, and cost is higher.Another uses combined steel, need to set
It sets split bolt to reinforce template, be cut off after concrete setting, then by screw rod, this traditional construction technique will produce seam
Gap, in case of rich groundwater just will produce leakage during well sinking, and the gap between combined steel can influence concrete
Surface quality.
[invention content]
The purpose of the present invention is exactly to solve the above problem in the prior art, a kind of structure novel is provided, safety can
It leans on, open caisson template easy for construction, including several standard segments template, each standard segment template includes modular unit and branch
Unit is supportted, the modular unit includes：Panel, several masters be stupefied, connector, spiral latch closure, back cord, the support unit packet
It includes：Bearing diagonal, supporting boot and Screw arbor with nut at both-ends, the stupefied parallel arrangement successively of several masters are arranged on panel, and the back cord is set
Set the stupefied top both sides of master and perpendicular to be set to several masters it is stupefied on, the side of the back cord connects bearing diagonal by connector,
It is connected by supporting boot between two bearing diagonals in the template of same standard segment, passes through spiral between the template of adjacent modular segment
Latch closure connects, and Screw arbor with nut at both-ends is common templates reinforcing mode, is distributed in template.
The panel uses glued board.
The master is stupefied to use "Ji" type steel and wood composite beam.
The invention also includes a kind of open caisson template construction methods, pour one section standard knot of sinking after the quasi- segment template of a feast-brand mark
Section template.
Construction method includes the following steps：
A) preparation of construction；
B) arc full-page proof guiding ruler sets up, positions；
C) template circular arc adjustment molding；
D) several standard segments template is installed；
E) form bracing system is installed；
F) concreting；
G) form removable；
H) template cleaning and repairing；
I) subsequent processing.
In step c), the distance of back cord in the template of adjacent modular segment is adjusted by adjusting spiral latch closure, and thus
Complete the variation of entire form surfacing radian, to be regulated just set and locking screw latch closure fixes its shape at required shape, and makes each
Segmentation back cord forms entirety.
The adjustment of template circular arc includes the following steps：
1) the spiral latch closure between back cord section and section is first unclamped；
2) it while being adjusted in synchronism two spiral latch closures up and down in the same direction, makes two spiral latch closure simultaneous retractables, form surfacing is gradually
Become camber, the big sample ruler of template arc is used to check template arc in adjustment process；
3) by the template mixed up compared with big sample ruler, until arc radius full-page proof；
4) check that template surface has zero defect；
5) after form surfacing and radius are met the requirements, adjusting bolt between adjustable back cord section and section is tightened；
6) thorough cleaning is carried out to template, ensures that template surface is smoother smooth, then smear one layer of demoulding in template surface
Form removal is convenient in agent.
This method uses main support of two bearing diagonals different in size as the adjustable plank sheathing of circular arc, and two supports are simultaneously
It is connected to the supporting boot for being fixed on ground, show that template generates by calculating the thickness for pouring the borehole wall and primary concreting height
Lateral pressure, and then obtain the intensity and length of required bearing diagonal, ensure side of the template in installation, dismounting and adjustment process
Just and it is safe.
In step f), include the following steps：
1) before pouring, check that template contral line position is accurate, horizontal, cross dimensions and headroom size meet design and want
It asks, various connectors, support element and reinforcing fitting must firmly install, non-loosening phenomenon, and formwork edge joint is tight；
2) various built-in fittings, pre-buried hole site are accurate, fixation, and the delivery pipe close to perfusion working face connects hose, pacifies
Funnel and sliding slot are filled, so that concrete is sent to arch；
3) construction in layer is used when concreting, between flexible pipe outlet is centered in inner and outer template, concreting speed
Degree control is in 10-15m3/ h often pours one layer, is made firm by ramming using poker vibrator closely knit.
In step g), when intensity reaches 75% i.e. collapsible die of design strength after the completion of concreting, form removal includes
Following steps：
1) when form removal, according to matching board design regulation carry out, it then follows first prop up and tears open afterwards, rear branch is first torn open, first non-weight bearing area with
Rear load-bearing position and top-down principle；
2) back cord and spiral latch closure of the template after removing should unclamp in time, template is unfolded, and have defect to panel
It is repaired in time, and panel is cleared up.
Beneficial effects of the present invention include：
1. the scope of application of the construction method is wider, easy construction, reliability is high；
2. safe and reliable, concrete surface is smoother smooth, overall beautiful；
3. speed of application is fast, duration effect is apparent and loss is few, at low cost.
[description of the drawings]
Fig. 1 the embodiment of the present invention methods construction schematic diagram
Fig. 2 (a) is structural schematic diagram of the embodiment of the present invention；
Fig. 2 (b) is the side view of Fig. 2 (a) of the present invention；
Fig. 2 (c) is the vertical view of Fig. 2 (a) of the present invention；
Fig. 3 is the method for the present invention process flow chart figure；
As shown, in figure：1. wood panel, 2. " several " Zee bar steel Z clark beams, 3. connectors, 4. back cords, 5. spirals
Latch closure, 6. bearing diagonals, 7. supporting boots
[specific implementation mode]
The invention will be further described below in conjunction with the accompanying drawings, and the structure and principle of this device are for the people of this profession
It is very clearly.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this
Invention.
The construction procedure of the present invention is as shown in Figure 3 comprising：
A) preparation of construction；
B) arc full-page proof guiding ruler sets up, positions；
C) template circular arc adjustment molding；
D) several standard segments template is installed；
E) form bracing system is installed；
F) concreting；
G) form removable；
H) template cleaning and repairing；
I) subsequent processing.
Wherein, the adjustable range of variable circular wooden formwork is that the distance between adjacent back cord provides, and it is main to adjust operation
Flexible by the spiral latch closure for being erected at wooden model back, to complete the continuous variation of plank sheathing panel radian, it is to be regulated at
Just set and locking screw latch closure fixes its shape to required shape, and keeps each segmentation steel back prismatic integral.
The regulating step of variable circular wooden formwork includes：
1) the spiral latch closure between back cord section and section is first unclamped；
2) it while being adjusted in synchronism two spiral latch closures up and down in the same direction, makes two spiral latch closure simultaneous retractables, form surfacing is gradually
Become camber, the big sample ruler of template arc is used to check template arc in adjustment process.
3) by the circle curve template mixed up compared with big sample ruler, until arc radius full-page proof.
4) check that template surface has zero defect.
5) after form surfacing and radius are met the requirements, adjusting bolt between adjustable back cord section and section is tightened.
6) thorough cleaning is carried out to template, ensures that template surface is smoother smooth, then smear one layer of demoulding in template surface
Form removal is convenient in agent.
Variable circular wooden formwork adjusts key technology：
1) when adjusting spiral latch closure, two lead screw should keep as possible simultaneously, in the same direction, it is synchronous, and governing speed cannot
It is too fast.
If 2) adjust small radii, should repeatedly it be adjusted, it can not one-time-reach-place.
3) after adjusting forming, the bolt between back cord should be tightened in time；
4) spiral latch closure between all segmentation back cords should be totally released before adjusting, prevents from drawing bad formwork steel back cord when adjusting
Or make panel deformation.
Main support present invention preferably employs two bearing diagonals different in size as the adjustable plank sheathing of circular arc, two supports
It is connected to the supporting boot for being fixed on ground simultaneously.Template is obtained by calculating the thickness for pouring the borehole wall and primary concreting height
The lateral pressure of generation, and then obtain the intensity and length of required bearing diagonal, ensure template in installation, dismounting and adjustment process
Convenience and safety.
Template is after installation is complete, after structure size passed examination, carry out " variable circular wooden formwork support system inspection, it is right
Stress is complicated or collection stage casing is supported reinforcing, prevents template stress deformation in concreting process.Reinforce acceptance(check)
It afterwards, can casting concrete.
Concrete construction includes the following steps：
1) before pouring, check whether template contral line position is accurate, level, cross dimensions and headroom size, which meet, to be set
Meter requires.Various connectors, support element and reinforcing fitting must firmly install, non-loosening phenomenon, and formwork edge joint is tight.
2) various built-in fittings, pre-buried hole site are accurate, fixed secured.For after so that concrete pipeline is installed no longer
Mobile, the delivery pipe close to perfusion working face will connect hose and necessary funnel and sliding slot etc., so that concrete is sent to arch
Portion.
3) construction in layer is wanted when concreting, between should flexible pipe outlet being centered in inner and outer template, and concreting
Speed is not easy too fast, is controlled under normal circumstances in 10-15m3/h.Often pour one layer, should as a plug vibrator make firm by ramming it is closely knit.
Form removable step includes：
When intensity reaches 75% i.e. collapsible die of design strength after the completion of concreting；
1) when form removal, the regulation that should be designed according to matching board carries out, it then follows first props up and tears open afterwards, rear branch is first torn open, first non-weight bearing area
With rear load-bearing position and top-down principle.Forbid to be prized firmly with sledgehammer.
2) back cord and spiral latch closure of the arc-shaped adjustable plank sheathing after removing should unclamp in time, template is unfolded, and right
Panel has being repaired in time for defect, and clears up panel.
Claims (10)
1. a kind of open caisson template, it is characterised in that including several standard segments template, each standard segment template includes template
Unit and support unit, the modular unit include：Panel, several masters be stupefied, connector, spiral latch closure, back cord, the branch
Supportting unit includes：Bearing diagonal, supporting boot and Screw arbor with nut at both-ends, the stupefied parallel arrangement successively of several masters is arranged on panel, described
Back cord setting the stupefied top both sides of master and perpendicular to be set to several masters it is stupefied on, the side of the back cord is connected by connector
Bearing diagonal is connected between two bearing diagonals in the template of same standard segment by supporting boot, between the template of adjacent modular segment
It is connected by spiral latch closure.
2. a kind of open caisson template as described in claim 1, it is characterised in that the panel uses glued board.
3. a kind of open caisson template as described in claim 1, it is characterised in that the master is stupefied to use "Ji" type steel and wood composite
Beam.
4. a kind of open caisson template construction method, it is characterised in that using the open caisson template knot as described in claims 1 to 3 is any
Structure pours the quasi- segment template of a feast-brand mark of sinking after the quasi- segment template of a feast-brand mark.
5. a kind of open caisson template construction method as claimed in claim 4, it is characterised in that include the following steps：
A) preparation of construction；
B) arc full-page proof guiding ruler sets up, positions；
C) template circular arc adjustment molding；
D) several standard segments template is installed；
E) form bracing system is installed；
F) concreting；
G) form removable；
H) template cleaning and repairing；
I) subsequent processing.
6. a kind of open caisson template construction method as claimed in claim 5, it is characterised in that in step c), by adjusting spiral
Latch closure adjusts the distance of back cord in the template of adjacent modular segment, and thus completes the variation of entire form surfacing radian, waits adjusting
Saving into required shape, just set and locking screw latch closure fixes its shape, and so that each segmentation heel is formed entirety.
7. such as a kind of open caisson template construction method described in claim 5 or 6, it is characterised in that the adjustment of template circular arc includes following
Step：
1) the spiral latch closure between heel section and section is first unclamped；
2) it while being adjusted in synchronism two spiral latch closures up and down in the same direction, two spiral latch closure simultaneous retractables, form surfacing is made to crossfade into
Arc checks template arc in adjustment process with the big sample ruler of template arc；
3) by the template mixed up compared with big sample ruler, until arc radius full-page proof；
4) check that template surface has zero defect；
5) after form surfacing and radius are met the requirements, adjusting bolt between adjustable heel section and section is tightened；
6) thorough cleaning is carried out to template, ensures that template surface is smoother smooth, then smear one layer of releasing agent in template surface, just
In form removal.
8. a kind of open caisson template construction method as claimed in claim 5, it is characterised in that use two oblique branch different in size
The main support as template is supportted, two support while being connected to the supporting boot for being fixed on ground, and the thickness of the borehole wall is poured by calculating
Degree and primary concreting height obtain the lateral pressure that template generates, and then obtain the intensity and length of required bearing diagonal, protect
Demonstrate,prove convenience and safety of the template in installation, dismounting and adjustment process.
9. a kind of open caisson template construction method as claimed in claim 4, it is characterised in that in step f), including following step
Suddenly：
1) before pouring, checking that template contral line position is accurate, horizontal, cross dimensions and headroom size meet design requirement,
Various connectors, support element and reinforcing fitting must firmly install, non-loosening phenomenon, and formwork edge joint is tight；
2) various built-in fittings, pre-buried hole site are accurate, fixation, and hose, installation leakage are connect close to the delivery pipe of perfusion working face
Bucket and sliding slot, so that concrete is sent to arch；
3) construction in layer, between flexible pipe outlet is centered in inner and outer template, concreting speed control are used when concreting
System is in 10-15m3/ h often pours one layer, is made firm by ramming using poker vibrator closely knit.
10. a kind of open caisson template construction method as claimed in claim 4, it is characterised in that in step g), concreting
After the completion when intensity reaches 75% i.e. collapsible die of design strength, form removal includes the following steps：
1) it when form removal, is carried out according to the regulation of matching board design, it then follows first prop up and tear open afterwards, rear branch is first torn open, and first non-weight bearing area is held with after
Weight position and top-down principle；
2) back cord and spiral latch closure of the template after removing should unclamp in time, template is unfolded, and have the timely of defect to panel
It is repaired, and panel is cleared up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171052.3A CN108316327A (en) | 2018-03-01 | 2018-03-01 | A kind of open caisson template and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171052.3A CN108316327A (en) | 2018-03-01 | 2018-03-01 | A kind of open caisson template and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108316327A true CN108316327A (en) | 2018-07-24 |
Family
ID=62900035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810171052.3A Pending CN108316327A (en) | 2018-03-01 | 2018-03-01 | A kind of open caisson template and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108316327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456058A (en) * | 2019-11-15 | 2020-07-28 | 中铁市政环境建设有限公司 | Sectional type open caisson template and construction method thereof |
| CN112523243A (en) * | 2019-09-19 | 2021-03-19 | 派利有限公司 | Caisson template |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201962608U (en) * | 2011-03-09 | 2011-09-07 | 天津第四市政建筑工程有限公司 | Adjustable viaduct concrete anti-collision guardrail template supporting device |
| CN201990905U (en) * | 2011-01-25 | 2011-09-28 | 秦皇岛老虎重工有限公司 | Concrete pouring construction mold for nonballast track slab base |
| CN105672337A (en) * | 2016-03-03 | 2016-06-15 | 杭州江润科技有限公司 | Construction method for cast-in-situ caisson formwork-supporting system |
| CN106192758A (en) * | 2016-07-15 | 2016-12-07 | 中建五局第三建设有限公司 | A kind of construction method utilizing the cantilever form large-scale high pier stud of construction |
| CN206091283U (en) * | 2016-07-01 | 2017-04-12 | 绍兴文理学院 | Hydraulic pressure is from climbing formula elevartor shaft regularization operation platform |
| CN208023599U (en) * | 2018-03-01 | 2018-10-30 | 中铁上海工程局集团有限公司 | A kind of open caisson template |
-
2018
- 2018-03-01 CN CN201810171052.3A patent/CN108316327A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201990905U (en) * | 2011-01-25 | 2011-09-28 | 秦皇岛老虎重工有限公司 | Concrete pouring construction mold for nonballast track slab base |
| CN201962608U (en) * | 2011-03-09 | 2011-09-07 | 天津第四市政建筑工程有限公司 | Adjustable viaduct concrete anti-collision guardrail template supporting device |
| CN105672337A (en) * | 2016-03-03 | 2016-06-15 | 杭州江润科技有限公司 | Construction method for cast-in-situ caisson formwork-supporting system |
| CN206091283U (en) * | 2016-07-01 | 2017-04-12 | 绍兴文理学院 | Hydraulic pressure is from climbing formula elevartor shaft regularization operation platform |
| CN106192758A (en) * | 2016-07-15 | 2016-12-07 | 中建五局第三建设有限公司 | A kind of construction method utilizing the cantilever form large-scale high pier stud of construction |
| CN208023599U (en) * | 2018-03-01 | 2018-10-30 | 中铁上海工程局集团有限公司 | A kind of open caisson template |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523243A (en) * | 2019-09-19 | 2021-03-19 | 派利有限公司 | Caisson template |
| CN111456058A (en) * | 2019-11-15 | 2020-07-28 | 中铁市政环境建设有限公司 | Sectional type open caisson template and construction method thereof |
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