CN109571742B - Be suitable for precast beam field construction integrated system under steel-concrete coincide pedestal condition - Google Patents
Be suitable for precast beam field construction integrated system under steel-concrete coincide pedestal condition Download PDFInfo
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- CN109571742B CN109571742B CN201811355156.6A CN201811355156A CN109571742B CN 109571742 B CN109571742 B CN 109571742B CN 201811355156 A CN201811355156 A CN 201811355156A CN 109571742 B CN109571742 B CN 109571742B
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- pedestal
- box girder
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- precast
- driving motor
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000004567 concrete Substances 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000010802 sludge Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000011160 research Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 10
- 238000009417 prefabrication Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
Abstract
The invention discloses a precast beam field construction comprehensive system suitable for a steel-concrete composite pedestal, which comprises a shared precast pedestal, a contact net, a gantry crane, a precast box beam, a beam transporting gun carriage, a pedestal foundation, a sprinkling nozzle, a box beam internal mold support, a water circulation system and an automatic telescopic precast shed; the automatic telescopic prefabricated shed comprises a driving motor, a wind sensor, a supporting framework and tarpaulin; the wind sensor is installed on the bottom plate of the driving motor, the output shaft of the driving motor is connected with the telescopic guide rails, the supporting frameworks are installed in the telescopic guide rails side by side, and the supporting frameworks are connected together through tarpaulin. The water circulation system comprises a circulating water pool, a sand settling layer, a pumping pipe, a filter screen and a water pump; the whole construction process of the precast beam is taken as a research object, and through various technical innovation researches, the mechanical automation of a beam yard is improved, and the manual input is reduced; the production efficiency is improved, and the construction accuracy is improved.
Description
Technical Field
The invention relates to a steel-concrete superposed precast box girder pedestal system suitable for an ultra-thick sludge layer, and belongs to the technical field of intelligent energy-saving and environment-friendly precast girder yard construction.
Background
At present, the domestic research on the precast beam yard is mainly biased to single technical research, most of the precast beam yard is still in a hopeful state aiming at the relative lags of beam yard arrangement, production optimization, recycling and the like, and some systematic research achievements are lacked. The project combines the actual conditions of engineering, integrates the construction experience of the prior domestic precast beam yard, technically improves the whole process of precast beam construction and production, further reduces the construction cost by improving the automation of construction and production and reducing the construction period, and creates an energy-saving and environment-friendly precast beam yard.
With the continuous development of traffic infrastructure and the intercommunication of road networks, the construction of large bridges is continuously increased. Except for main spans of large bridges such as river-crossing bridges and viaducts, most of main girders of the large bridges are fabricated small prestressed concrete box girders, and the large bridges are stressed clearly, have simple structures and convenient construction, and are bridge types which are most widely applied in bridges. At the present stage, the construction technology, quality, safety, production progress and construction management of the domestic precast beam yard are increasingly mature, the structural size of the simply supported beam bridge is easy to design into serialization and standardization, and the method is favorable for widely adopting industrial construction in factories or on the land, organizing large-scale precast production and using modern hoisting equipment for installation. In the face of increasingly advanced construction techniques and advanced mechanical equipment, beam yard construction is also increasingly automated.
The prefabrication of the box girder mainly comprises the following steps: (1) installing a fixed base; (2) separately prefabricating bottom web plates and top plate steel bars; (3) erecting an outer mold; (4) installing a bottom web reinforcing steel framework; (5) installing a top plate steel reinforcement framework; (6) installing a core mold; (7) pouring concrete; (8) drawing the core mould and removing the outer mould; (9) pre-stress tension; (10) and (5) maintaining. Each process of box girder prefabrication relates to auxiliary assembly more, and the current stage mainly uses manual work as the main thing, and not only production efficiency is low, and the product precision is low down, and the safety risk is higher. In summary, the production mode with large manpower input mainly has the following problems:
(1) because the product mainly depends on manual production, the technical quality of operators is uneven, and the quality of the box girder is difficult to control.
(2) In the maintenance period, labor and water are wasted, resources are wasted, manual operation is inevitable, negligence is caused, and the quality of box girder finished products is influenced.
(3) The great investment of operating personnel increases the operation risk, such as formwork erection, formwork removal, prestress tensioning and the like.
(4) The material is more in one-time investment, the recovery utilization rate is low, and the waste is serious.
(5) The construction land of the beam yard is more tense, the site is limited, and the phenomena of shutdown and labor saving are easily caused due to the lagged construction organization management idea.
Therefore, at present, for the technical innovation in the whole production process of the box girder, how to improve the construction mechanization and reduce the labor investment without greatly increasing the cost investment is the key point of the project research. Based on the whole construction process of the precast beam, the mechanical automation of a beam yard is improved and the manual input is reduced through various technical innovation researches; the production efficiency is improved, the product accuracy is improved, and an intelligent energy-saving environment-friendly precast beam field is created.
Disclosure of Invention
The invention aims to design a comprehensive system suitable for the construction of a precast beam yard under the condition of a steel-concrete superposed pedestal aiming at the technical problems in the background technology, the system can integrate multiple functions of pouring, transportation, maintenance and the like, and green construction and intelligent construction are realized through the system.
In order to achieve the purpose, the technical scheme adopted by the invention is a comprehensive system for constructing a precast beam field under the condition of a steel-concrete composite pedestal, and the system comprises a shared precast pedestal 4, a contact net 8, a gantry crane 1, a precast box beam 2, a beam transporting gun carriage 3, a pedestal foundation 5, a spray nozzle 6, a box beam internal mold support 7, a water circulation system and an automatic telescopic precast shed; pouring a pedestal foundation 5 in the ultra-thick sludge layer, wherein the pedestal foundation 5 is used as a supporting structure of a common prefabricated pedestal 4, a beam transporting gun carriage 3 is installed on the common prefabricated pedestal 4, and an inner mold and an outer mold of a prefabricated box girder 2 are erected on the beam transporting gun carriage 3; the shower nozzle 6 is arranged at the top of the precast box girder 2; the inner die of the prefabricated box girder 2 is of an integral plug-in structure and is supported by box girder inner die supports 7, and each box girder inner die support 7 is supported by a jack or a support frame; the contact net 8 is arranged at the top of the gantry crane 1; the gantry crane 1 is over against the prefabricated box girder 2; the shower nozzle 6 is connected with a water circulation system, and the automatic telescopic prefabricated shed is arranged at the top of the prefabricated box girder 2.
The automatic telescopic prefabricated shed comprises a driving motor 9, a wind sensor 10, a supporting framework 11 and tarpaulin 12; the wind sensor 10 is installed on the bottom plate of the driving motor 9, the output shaft of the driving motor 9 is connected with the telescopic guide rail, the supporting frameworks 11 are installed in the telescopic guide rail side by side, and the supporting frameworks 11 are connected together through tarpaulin 12.
The water circulation system comprises a circulating water tank 13, a sand settling layer 14, a pumping pipe 15, a filter screen 16 and a water pump 17; the pumping pipe 15 passes through the water pump 17 and the shower nozzle 6, water sprayed by the shower nozzle 6 is converged into the circulating water tank 13 through the ground, and the sand settling layer 14 is settled at the bottom of the circulating water tank 13; the pumping pipe 15 is provided with a filter screen 16 and an auxiliary conveying pipe.
Compared with the prior art, the technical scheme of the invention takes the whole construction process of the precast beam as a research object, and improves the mechanical automation of a beam yard and reduces the manual input through various technical innovation researches; the production efficiency is improved, the construction accuracy is improved, and an intelligent energy-saving environment-friendly precast beam yard is created.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view showing the expansion of the automatic retractable prefabricated shed.
Fig. 3 is a schematic view of the folding of the automatic retractable prefabricated shed.
Fig. 4 is a schematic structural view of a water circulation system.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
A steel-concrete superposed precast box girder pedestal system suitable for an ultra-thick silt layer comprises a shared precast pedestal 4, a contact net 8, a gantry crane 1, a precast box girder 2, a girder transporting gun carriage 3, a pedestal foundation 5, a spraying nozzle 6, a box girder inner mold support 7, a water circulation system and an automatic telescopic precast shed; pouring a pedestal foundation 5 in the ultra-thick sludge layer, wherein the pedestal foundation 5 is used as a supporting structure of a common prefabricated pedestal 4, a beam transporting gun carriage 3 is installed on the common prefabricated pedestal 4, and an inner mold and an outer mold of a prefabricated box girder 2 are erected on the beam transporting gun carriage 3; the shower nozzle 6 is arranged at the top of the precast box girder 2; the inner die of the prefabricated box girder 2 is of an integral plug-in structure and is supported by box girder inner die supports 7, and each box girder inner die support 7 is supported by a jack or a support frame; the contact net 8 is arranged at the top of the gantry crane 1; the gantry crane 1 is over against the prefabricated box girder 2; the shower nozzle 6 is connected with a water circulation system, and the automatic telescopic prefabricated shed is arranged at the top of the prefabricated box girder 2.
The automatic telescopic prefabricated shed comprises a driving motor 9, a wind sensor 10, a supporting framework 11 and tarpaulin 12; the wind sensor 10 is installed on the bottom plate of the driving motor 9, the output shaft of the driving motor 9 is connected with the telescopic guide rail, the supporting frameworks 11 are installed in the telescopic guide rail side by side, and the supporting frameworks 11 are connected together through tarpaulin 12.
The water circulation system comprises a circulating water tank 13, a sand settling layer 14, a pumping pipe 15, a filter screen 16 and a water pump 17; the pumping pipe 15 passes through the water pump 17 and the shower nozzle 6, water sprayed by the shower nozzle 6 is converged into the circulating water tank 13 through the ground, and the sand settling layer 14 is settled at the bottom of the circulating water tank 13; the pumping pipe 15 is provided with a filter screen 16 and an auxiliary conveying pipe.
Examples
(1) Common prefabricated pedestal
The box girder type is totally four, 28.5m, 30m, 30.5m and 40m, the prefabricated pedestal is designed to be suitable for 4 box girder shared pedestals, the quantity of the pedestals can be saved, the limitation of land utilization in two fields is overcome, the utilization rate of the pedestals is increased, and the construction cost is saved.
(2) But prefabricated pedestal of recovery type case roof beam
The project is comprehensively considered, the section steel structure is selected as a precast beam precast pedestal, and the precast beam can be recycled after the beam yard is produced, so that the recycling rate is high.
(3) Humiture response automatic spray maintenance system
The construction site belongs to subtropical marine climate, is hot in summer and cold in winter, is often attacked by south subtropical seasonal weather, and has an annual average temperature of 22.3 ℃. Box roof beam maintenance is important link in the construction of project box roof beam, and conventional automatic spray maintenance system needs the manual work to open regularly and close, and inside and outside difference in temperature and humidity of humiture response automatic spray system auto-induction box roof beam realizes automatic maintenance, compares conventional automatic spray maintenance and has the energy-concerving and environment-protective advantage such as saving artifical, saving water resource, and more does benefit to the box roof beam maintenance.
(4) Contact net type wiring line of gantry crane
A project prefabrication field is provided with a 2 x 100t gantry crane as a movable beam, and 2 10t gantry cranes as daily construction hoisting equipment. Traditional portal crane walks the line for ground notch formula and walks the line, adopts this mode of walking to increase unnecessary area, and the interior car of beam yard has also increased the daily potential safety hazard of beam yard, in case take place to go bad electric wire accident in the construction, delays the time limit for a project and takes place the electric shock accident easily again. The project is through research decision to adopt the contact net to walk the line to the portal crane and walk the line mode, adopts the effectual various circumstances of having avoided the aforesaid to probably appear of this mode, and is pleasing to the eye practical again promptly.
(5) Wind-control type full-automatic telescopic sunshade rain-proof shed
The 4 steel bar binding jig frames are arranged in the beam yard, the factors of large rainfall and long period in the Zhuhai city are considered, the construction period is prevented from being delayed, the construction is convenient, the working efficiency and quality of steel bar prefabrication are improved, no blind spot is ensured in 24-hour operation, and the construction progress of the prefabricated beam is ensured. When the steel bar processing greenhouse is designed in the prefabricated yard, the full-automatic telescopic prefabricated greenhouse is adopted by referring to the house building engineering experience, and the ceiling of the rain shed can be automatically recovered when the steel bar framework is hoisted, so that the operation is convenient and rapid. Meanwhile, a wind speed sensor is arranged on the top of the large shed, wind power is automatically contracted beyond 6 levels, and construction safety is guaranteed.
(6) Box girder sliding platform upper bridge
The project bridge site is located in a deep and thick silt layer, the maximum silt depth reaches 40m, if a conventional box girder bridge-mounting scheme is adopted, the requirement on a construction access way is high, the construction investment of the access way is overlarge, and the later-period maintenance cost is high. In order to avoid unnecessary investment, when the case beam bridge-mounting scheme is compared and selected, the beam-mounting mode of the sliding platform is determined. The conventional sliding platform is a method of erecting a steel pipe support, arranging a sliding track on the steel pipe support, lifting a box girder to a sliding vehicle by using a gantry crane, and then sliding the box girder to a girder transporting gun carriage, wherein in the project, the girder transporting gun carriage is directly arranged on a transverse moving platform, the gantry crane is used for lifting the girder to the gun carriage, and the gun carriage and the girder are integrally transversely moved. Compared with the traditional method, the method has the advantages of improving the construction efficiency and reducing the operation risk, and avoids the construction potential safety hazard of transferring the box girder from the girder moving trolley to the girder transporting gun carriage by using a jack.
(7) Segmented integrally-drawn inner core die
In order to improve the construction efficiency of the box girder and ensure the prefabrication quality of the box girder, the project determines to adopt the integrally-drawable inner die for the box girder in sections through a plurality of conference researches when the box girder template is equipped, and compared with the traditional inner die, the template has the advantages of convenience in installation, easiness in dismounting, no potential safety hazard, good appearance quality of concrete, labor saving and the like.
(8) Full-circulation drainage system without external drainage
In order to reduce the pollution of beam yard construction to the local environment and water resources, the project breaks through the conventional thinking, adopts the full-cycle and non-discharge drainage system in the plant, constructs a seven-stage sedimentation tank, improves the sewage treatment effect and the utilization rate, carries out sewage classification treatment and regional utilization, and sets a maintenance water area, a plant area ground dust fall water area, a vegetation greening water area and the like.
Claims (3)
1. The utility model provides a be suitable for precast beam field construction integrated system under steel reinforced concrete coincide pedestal condition which characterized in that: the system comprises a common type prefabricating pedestal (4), a contact net (8), a gantry crane (1), a prefabricating box girder (2), a beam transporting gun carriage (3), a pedestal foundation (5), a spraying nozzle (6), a box girder internal mold support (7), a water circulation system and an automatic telescopic type prefabricating shed; pouring a pedestal foundation (5) in the ultra-thick sludge layer, wherein the pedestal foundation (5) is used as a supporting structure of a common prefabricated pedestal (4), a beam transporting gun carriage (3) is installed on the common prefabricated pedestal (4), and an inner mold and an outer mold of a prefabricated box girder (2) are erected on the beam transporting gun carriage (3); the spraying nozzle (6) is arranged at the top of the prefabricated box girder (2); the inner die of the prefabricated box girder (2) adopts an integral plug-in structure and is supported by box girder inner die supports (7), and each box girder inner die support (7) is supported by a jack or a support frame; the contact net (8) is arranged at the top of the gantry crane (1); the gantry crane (1) is over against the prefabricated box girder (2); the shower nozzle (6) is connected with a water circulation system, and the automatic telescopic prefabricated shed is arranged at the top of the prefabricated box girder (2).
2. The precast beam yard construction integrated system suitable for the condition of the steel-concrete superposition pedestal according to claim 1, wherein: the automatic telescopic prefabricated shed comprises a driving motor (9), a wind sensor (10), a supporting framework (11) and tarpaulin (12); the wind sensor (10) is arranged on a bottom plate of the driving motor (9), an output shaft of the driving motor (9) is connected with the telescopic guide rail, the supporting frameworks (11) are arranged in the telescopic guide rail side by side, and the supporting frameworks (11) are connected together through tarpaulin (12).
3. The precast beam yard construction integrated system suitable for the condition of the steel-concrete superposition pedestal according to claim 1, wherein: the water circulation system comprises a circulating water pool (13), a sand-settling layer (14), a pumping pipe (15), a filter screen (16) and a water pump (17); the pumping pipe (15) passes through the water pump (17) and the shower nozzle (6), water sprayed by the shower nozzle (6) is converged into the circulating water tank (13) through the ground, and the sand settling layer (14) is settled at the bottom of the circulating water tank (13); the pumping pipe (15) is provided with a filter screen (16) and is provided with an auxiliary conveying pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811355156.6A CN109571742B (en) | 2018-11-14 | 2018-11-14 | Be suitable for precast beam field construction integrated system under steel-concrete coincide pedestal condition |
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| CN201811355156.6A CN109571742B (en) | 2018-11-14 | 2018-11-14 | Be suitable for precast beam field construction integrated system under steel-concrete coincide pedestal condition |
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| CN109571742B true CN109571742B (en) | 2021-02-23 |
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| CN101713169B (en) * | 2008-10-06 | 2011-02-09 | 中交第三航务工程局有限公司 | Method for manufacturing segmental box girder |
| CN102162301A (en) * | 2011-03-04 | 2011-08-24 | 葛洲坝集团第五工程有限公司 | Method and device for preserving temperature and humidity and protecting during concrete construction in winter |
| CN202185971U (en) * | 2011-09-13 | 2012-04-11 | 云南路桥股份有限公司 | Automatic spraying equipment for small-sizedminiature prefabricated component |
| KR101873335B1 (en) * | 2016-08-18 | 2018-07-03 | 한국철도기술연구원 | Method and Apparatus for Manufacturing Pre-tensioned Concrete Member |
| CN206690295U (en) * | 2017-04-06 | 2017-12-01 | 贵州省公路工程集团有限公司 | A kind of precasting yard automatic spray health recirculated water utilizes construction system |
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