CN114033431A - Irregular structure concrete pouring construction method - Google Patents
Irregular structure concrete pouring construction method Download PDFInfo
- Publication number
- CN114033431A CN114033431A CN202111355201.XA CN202111355201A CN114033431A CN 114033431 A CN114033431 A CN 114033431A CN 202111355201 A CN202111355201 A CN 202111355201A CN 114033431 A CN114033431 A CN 114033431A
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- China
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- construction method
- pouring
- irregular structure
- trolley
- concrete pouring
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000001788 irregular Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 2
- 230000009545 invasion Effects 0.000 description 4
- 239000011440 grout Substances 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of concrete construction, in particular to a concrete pouring construction method for an irregular structure. The method comprises the following steps: s1, plane measurement: firstly, measuring a longitudinal axis and a transverse axis of a construction section on a main body bottom plate, and discharging a central line of a designed culvert; s2, paving the steel wedge and the steel rail according to requirements, controlling the track gauge error within +/-10 mm after paving, and fixing the steel wedge and the rail by using a spike; s3, selecting a trolley with proper tonnage according to site conditions, and assembling the trolley; s4, pouring concrete: pouring from an operation window about 1.5-2 m away from the foundation, and taking care to change pouring positions; and S5, demolding and maintaining. The construction method obviously improves the construction efficiency and simultaneously ensures the construction safety. The invention is mainly applied to the aspect of concrete pouring construction of irregular structures.
Description
Technical Field
The invention relates to the technical field of concrete construction, in particular to a concrete pouring construction method for an irregular structure.
Background
The diplopore is crossed water arch culvert and is special-shaped culvert, and when the culvert engineering of construction abnormal shape structure, the bottom plate concrete adopts design steel mould to once only pour, and the roof adopts self-propelled hydraulic trolley to be under construction, because the bottom plate is anomalous convex structure, so the platform truck track degree of difficulty of making level is big, has influenced the construction effect, threatens constructor's life safety.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the irregular structure concrete pouring construction method, which improves the complex procedures, has the advantages of fast construction progress, high safety, less labor input, low labor cost and guaranteed concrete quality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the irregular structure concrete pouring construction method comprises the following steps:
s1, plane measurement: firstly, measuring a longitudinal axis and a transverse axis of a construction section on a main body bottom plate, and discharging a central line of a designed culvert;
s2, paving the steel wedge and the steel rail according to requirements, controlling the track gauge error within +/-10 mm after paving, and fixing the steel wedge and the rail by using a spike;
s3, selecting a trolley with proper tonnage according to site conditions, and assembling the trolley;
s4, pouring concrete: pouring from an operation window about 1.5-2 m away from the foundation, and taking care to change pouring positions;
and S5, demolding and maintaining.
In the step S2, the steel wedge spacing is not more than 150 cm.
In step S3, when the trolley is assembled, all the bolts of the whole trolley must be complete and screwed; all the locating pins at the joints of the templates must be present and tightened.
In said step S3, the screw portion must be greased with grease using the screw jack to ensure rotational freedom.
In the step S4, in the pouring process, the two sides are poured evenly and in a balanced manner, the left-right height difference is strictly controlled not to be larger than 200cm, and pouring from the vault is strictly prohibited.
In the step S4, when pouring to the vault, a special person should be arranged to observe the concrete pouring condition at the end of the vault to prevent the template from being crushed by excessive pumping.
In the step S5, the demolding operation includes removing the blocking head mold and the support; and starting a hydraulic oil pump, operating the side die oil cylinder to slightly extend to loosen the screw rods, and operating the side die oil cylinder to withdraw the side die and separate the side die from the molding surface after all the screw rods of the side die are removed.
In step S5, when the next plate is poured, the overlapping length is not greater than 10cm, so as to avoid slab staggering caused by excessively long overlapping.
In step S5, after the trolley is demolded, the template should be immediately cleaned, and the release agent should be coated.
Compared with the prior art, the invention has the beneficial effects that:
this engineering roof is the dysmorphism structure, and the external mold adopts design steel mould, and the centre form adopts self-propelled hydraulic pressure platform truck to be under construction, and for the security and the maneuverability of guaranteeing the platform truck operation, orbital laying becomes the problem that must solve in the construction, through calculating roof concrete load maximum value, roof external mold static load, dynamic load and other loads in the work progress, adopts channel-section steel and thick steel sheet to process into the steel wedge and carries out the track and make level, and the steel wedge bottom plate is processed into the convex of laminating bottom plate circular arc, guarantees construction safety. The construction efficiency is obviously improved, and the construction safety is ensured.
Drawings
FIG. 1 is a schematic view of the construction process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the irregular structure concrete pouring construction method includes the following steps:
s1, plane measurement: firstly, measuring a longitudinal axis and a transverse axis of a construction section on a main body bottom plate, and discharging a central line of a designed culvert;
s2, paving steel wedges and steel rails according to requirements, controlling the track gauge error within +/-10 mm after paving, and fixing the steel wedges and the rails by using spikes to prevent dangers when the trolley travels;
s3, selecting a trolley with proper tonnage according to site conditions, and assembling the trolley; because the trolley is assembled and debugged before leaving factory, the installation quality is prevented from being influenced by using gas cutting and electric welding methods as much as possible, and if the template is deformed in transportation, the trolley can be installed after being corrected. After the hydraulic system is tested, all the oil cylinders must be ensured to move freely, and oil leakage does not occur at all joints. When the screw rods are installed, the same longitudinal screw rod row is required to be ensured to be consistent in steering, so that the interlocking phenomenon is avoided during operation.
S4, pouring concrete: pouring from an operation window about 1.5-2 m away from the foundation, and taking care to change pouring positions;
and S5, demolding and maintaining.
Preferably, the steel wedge spacing is not more than 150cm, so as to prevent the steel rail from being broken by pressure.
Preferably, when the trolley is assembled, all bolts of the whole trolley are required to be complete and screwed; all the locating pins at the joints of the templates must be present and tightened. The occurrence of wrong stations in the use process is prevented.
Preferably, the use of a jackscrew must be greased on the threaded portion to ensure rotational freedom.
Preferably, in the pouring process, the two sides are evenly poured in a balanced manner, the left-right height difference is strictly controlled not to be larger than 200cm, and pouring from the arch top is strictly forbidden.
Preferably, when pouring to the vault, should set up special people and observe concrete placement at the vault end, prevent that excessive pumping from crushing the template. In the pouring process, the vibrating rod is adopted to vibrate in time, so that the construction quality of the concrete is ensured.
Preferably, the demolding operation is to remove the head blocking mold and the support; and starting a hydraulic oil pump, operating the side die oil cylinder to slightly extend to loosen the screw rods, and operating the side die oil cylinder to withdraw the side die and separate the side die from the molding surface after all the screw rods of the side die are removed.
Preferably, when pouring the next edition, overlap joint length is not more than 10cm, avoids the wrong platform because of the overlap joint overlength produces.
Preferably, the templates should be cleaned immediately after the trolley is demolded, and the release agent should be brushed.
Problems to be noted in the operation of the trolley:
before the trolley template is in place, whether the concrete at the construction joint has the phenomenon of line invasion or not is checked, and if the concrete has the phenomenon of line invasion, the line invasion part needs to be chiseled so as to ensure that the clearance size of the structure meets the design requirement.
And a grout stopping strip is adhered between the trolley template and the bottom plate construction joint, so that the trolley template is tightly combined with the bottom plate concrete and no grout leakage phenomenon is caused.
After the trolley travels to a designated position, the trolley top die is put in place by using a hydraulic system, the clearance size of the structure is guaranteed, and the trolley top die is properly placed outside, so that the phenomenon of line invasion caused by deformation of a die plate in the pouring process is avoided.
The trolley template and the top plate outer mold are fixed by adopting a one-time pull rod, the side walls on two sides are the maximum stress value of the outer mold, and the pull rod is encrypted at the position to prevent mold explosion and ensure normal concrete pouring.
According to the design requirement, demoulding can be carried out when the concrete strength reaches 85 percent of the design requirement, and the outer mould is firstly removed and then the inner mould of the trolley is removed.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (9)
1. The irregular structure concrete pouring construction method is characterized by comprising the following steps:
s1, plane measurement: firstly, measuring a longitudinal axis and a transverse axis of a construction section on a main body bottom plate, and discharging a central line of a designed culvert;
s2, paving the steel wedge and the steel rail according to requirements, controlling the track gauge error within +/-10 mm after paving, and fixing the steel wedge and the rail by using a spike;
s3, selecting a trolley with proper tonnage according to site conditions, and assembling the trolley;
s4, pouring concrete: pouring from an operation window about 1.5-2 m away from the foundation, and taking care to change pouring positions;
and S5, demolding and maintaining.
2. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in the step S2, the steel wedge spacing is not more than 150 cm.
3. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in step S3, when the trolley is assembled, all the bolts of the whole trolley must be complete and screwed; all the locating pins at the joints of the templates must be present and tightened.
4. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in said step S3, the screw portion must be greased with grease using the screw jack to ensure rotational freedom.
5. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in the step S4, in the pouring process, the two sides are poured evenly and in a balanced manner, the left-right height difference is strictly controlled not to be larger than 200cm, and pouring from the vault is strictly prohibited.
6. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in the step S4, when pouring to the vault, a special person should be arranged to observe the concrete pouring condition at the end of the vault to prevent the template from being crushed by excessive pumping.
7. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in the step S5, the demolding operation includes removing the blocking head mold and the support; and starting a hydraulic oil pump, operating the side die oil cylinder to slightly extend to loosen the screw rods, and operating the side die oil cylinder to withdraw the side die and separate the side die from the molding surface after all the screw rods of the side die are removed.
8. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in step S5, when the next plate is poured, the overlapping length is not greater than 10cm, so as to avoid slab staggering caused by excessively long overlapping.
9. The irregular structure concrete pouring construction method according to claim 1, characterized in that: in step S5, after the trolley is demolded, the template should be immediately cleaned, and the release agent should be coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355201.XA CN114033431A (en) | 2021-11-16 | 2021-11-16 | Irregular structure concrete pouring construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355201.XA CN114033431A (en) | 2021-11-16 | 2021-11-16 | Irregular structure concrete pouring construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114033431A true CN114033431A (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111355201.XA Pending CN114033431A (en) | 2021-11-16 | 2021-11-16 | Irregular structure concrete pouring construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN114033431A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010229761A (en) * | 2009-03-27 | 2010-10-14 | Kumagai Gumi Co Ltd | Construction device and construction method for base course reinforced concrete |
| CN202707081U (en) * | 2012-07-28 | 2013-01-30 | 中铁二十局集团第三工程有限公司 | Walk-through type closed conduit pouring template trolley |
| CN107762532A (en) * | 2016-08-23 | 2018-03-06 | 中铁十局集团第工程有限公司 | Tunnel vault band mould grouting construction method |
| CN109882200A (en) * | 2019-02-26 | 2019-06-14 | 中铁十二局集团有限公司 | Irregular bottom surface formwork jumbo uses construction method |
| CN111550265A (en) * | 2020-04-16 | 2020-08-18 | 北京建工路桥集团有限公司 | Pouring process for tunnel secondary lining by adopting novel hydraulic trolley |
-
2021
- 2021-11-16 CN CN202111355201.XA patent/CN114033431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010229761A (en) * | 2009-03-27 | 2010-10-14 | Kumagai Gumi Co Ltd | Construction device and construction method for base course reinforced concrete |
| CN202707081U (en) * | 2012-07-28 | 2013-01-30 | 中铁二十局集团第三工程有限公司 | Walk-through type closed conduit pouring template trolley |
| CN107762532A (en) * | 2016-08-23 | 2018-03-06 | 中铁十局集团第工程有限公司 | Tunnel vault band mould grouting construction method |
| CN109882200A (en) * | 2019-02-26 | 2019-06-14 | 中铁十二局集团有限公司 | Irregular bottom surface formwork jumbo uses construction method |
| CN111550265A (en) * | 2020-04-16 | 2020-08-18 | 北京建工路桥集团有限公司 | Pouring process for tunnel secondary lining by adopting novel hydraulic trolley |
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Application publication date: 20220211 |