CN110043029A - The precompressed water tank and pre-pressing process of huge laced beam steel pipe full framing - Google Patents
The precompressed water tank and pre-pressing process of huge laced beam steel pipe full framing Download PDFInfo
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- CN110043029A CN110043029A CN201910416166.4A CN201910416166A CN110043029A CN 110043029 A CN110043029 A CN 110043029A CN 201910416166 A CN201910416166 A CN 201910416166A CN 110043029 A CN110043029 A CN 110043029A
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- water tank
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- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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Abstract
The present invention relates to technical field of building construction, and disclose the water tank pre-pressing process of huge laced beam steel pipe full framing, including following operating procedure: full framing is set up → selecting precompressed region → determine prefabricating load → water tank set up → monitoring point arrangement → monitoring instrument setting → water storage hierarchical loading → precompressed monitoring → settlement stability → draining unloads → adjusts rack template → next procedure.By using the standing simple device in building site, water tank is voluntarily configured, flexible and convenient, work efficiency is high, can shorten 1/3 or more than traditional preloading duration；Processing charges is low, it is easy to operate, it saves money, than 70 ~ 80% can be reduced investment outlay using prefabricated reinforced concrete block preloading method, 30 ~ 40% are reduced investment outlay than stacking sandbag precompressed, 20% ~ 30% can be reduced investment outlay compared with live bar material precompressed, this preloading method has construction equipment few, and construction efficiency is high, it gathers materials on the spot, the advantages that production is simple, environmental protection construction, and the actual forced status in simulation casting process is reasonable.
Description
Technical field
The present invention relates to technical field of building construction, the precompressed water tank of specially huge laced beam steel pipe full framing.
Background technique
In the huge laced beam concreting process of large-span cast-in-situ, the stability and deflection of bracket directly affect sky
The safety and quality of web grider concreting.
The purpose of pre-pressing bracket is in order to which the safety of checking bracket and collection construction settlement data can be examined by precompressed
Test the intensity, rigidity and safety of bracket, it is ensured that construction safety；The influence of bracket inelastic deformation can be eliminated, elasticity is grasped and becomes
Graphic data keeps Application in Pre-camber reasonable, is conducive to laced beam rod piece alignment control, and the existing common selection of pre-pressing bracket load is prefabricated
Reinforced concrete block precompressed, stacks the methods of sandbag precompressed or the bar material precompressed at scene at water bag precompressed, using pre-manufactured steel
Reinforced concrete block precompressed needs that prefabricated reinforced concrete block precompressed is placed on bracket in batches with lifting machine, pre- in placement process
Reinforced concrete block precompressed processed causes prefabricated reinforced concrete block precompressed discomfort to be evenly arranged in branch due to weight and area difference
On frame, lead to the precompressed discontinuity of bracket, the phenomenon that local precompressed overload occurs, water bag precompressed also needs haulage equipment
It is piled up on bracket, by the way of water bag precompressed, unbalance loading when be easy to causeing pre-pressing bracket, the precision after influencing test,
Using the bar material precompressed at scene, need to expend a large amount of goods and materials and manpower, these methods need a large amount of people in summary
Work, crane hoisting equipment, waste of material is serious, and the construction time is longer, not only time-consuming but also have a fixed limit to precompressed place
System.
Summary of the invention
For the deficiency of above-mentioned background technique, the present invention provides the precompressed water tank of huge laced beam steel pipe full framing,
Have and save resource, shorten construction period, advantage easy to operate, solves the problems, such as background technique proposition.
The invention provides the following technical scheme: the water tank pre-pressing process of huge laced beam steel pipe full framing, including it is following
Operating procedure: full framing, which is set up, → selecting precompressed region → determines that prefabricating load → water tank sets up → monitoring point arrangement → monitoring
Instrument setting → water storage hierarchical loading → precompressed monitoring → settlement stability → draining unloads → adjusts rack template → next procedure；
It has set up first and has designed and produced water tank on the steel pipe full framing of completion, directly carried out using live scaffold when setting up,
Water tank main body is built using flitch, makes water tank bed die, in the production for carrying out two side templates；With perpendicular on the outside of two side template of water tank
Secondary stupefied to flitch work, stupefied master is double steel pipe transversely strengthening, and paving waterproof cloth in cabinet, screw rod uses new waterproof Screw arbor with nut at both-ends (certainly
Band waterproof blocks)；It is tight that the closure such as rubber mat, marine glue are separately added at the perforation of screw rod both ends, cabinet uses wooden boards material, cabinet
Monitoring point and placement monitoring instrument are arranged after completing as required, is directly poured water pressure to cabinet with water pump, every grade of load is applied
It when adding into, monitors each monitoring point absolute altitude and calculates settling amount, after whole prefabricating loads apply, monitored at interval of 24 hours
Once and each monitoring point absolute altitude is recorded, when pre-pressing bracket meets precompressed qualification, carries out bracket unloading, after unloading 6 hours, monitoring
Each monitoring point absolute altitude, and the elastic deformation amount of each monitoring point of bracket is calculated, in loading procedure, pre-pressing bracket monitoring 36h cannot expire
This regulation of foot should carry out checking computations and safety verification to bracket again, can extend according to the actual situation squeeze time or take other
Processing method.
The precompressed water tank of huge laced beam steel pipe full framing, including steel pipe full framing, flitch, wooden boards, waterproof cloth,
New waterproof Screw arbor with nut at both-ends, the flitch, wooden boards, waterproof cloth, new waterproof Screw arbor with nut at both-ends constitute water tank, and the flitch is located at
The outermost of water tank, the wooden boards are located at the middle part of water tank, and the waterproof is laid in the most inner side of water tank, the flitch, wood
Panel, waterproof cloth are connected by new waterproof Screw arbor with nut at both-ends, are equipped on the inside of water tank on the new waterproof Screw arbor with nut at both-ends
Rubber ring, the two sides of the water tank, which are equipped with, throws bar, the monitoring dress being equipped with below water tank on the steel pipe full framing
It sets.
Preferably, the water tank precompressed uses hierarchical loading, presses respectively by prefabricating load 0% → 60% → 80% → 100%,
After the completion of every grade of load, first stops next stage load, and once monitored to bracket settling amount at interval of 12 hours, work as bracket
When the 12 hours settling amount average value in top monitoring point is less than 2mm, next stage load can be carried out, every grade of load precompressed performs monitoring
Data record can disposably drain unloading after precompressed detection data reaches design and the requirement in relation to standardizing.
Preferably, the water tank floor space is not less than the quasi- practical perspective plane of cast-in-place structural beam, and head height is by prefabricating load
Conversion show that pre-pressing bracket loading range is no less than the practical perspective plane of cast-in-place concrete structure object.
Preferably, the pre-pressing bracket Load value is no less than the concrete structure dead load and template weight of bracket receiving
The sum of 1.1 times, prepressing units internal loading intensity can be according to prefabricating load weight in its prepressing units divided by prepressing units face
Product obtains.
Preferably, the settlement monitoring point arrangement of the bracket should be longitudinal every 1/4 span setting one along concrete structure
Monitoring section, the monitoring point on each monitoring section should not be less than 5, and should be arranged symmetrically, bracket settlement monitoring point Ying Zhi
It is respectively arranged on top of the trellis and bottom corresponding position.
The present invention have it is following the utility model has the advantages that
1, the precompressed water tank of the huge laced beam steel pipe full framing voluntarily configures water by using the standing simple device in building site
Case, flexible and convenient, work efficiency is high, can shorten 1/3 or more than traditional preloading duration；Processing charges is low, easy to operate, section
Province's expense, than 70 ~ 80% can be reduced investment outlay using prefabricated reinforced concrete block preloading method, 30 are reduced investment outlay than stacking sandbag precompressed ~
40%, 20% ~ 30% can be reduced investment outlay compared with live bar material precompressed, this preloading method has construction equipment few, construction efficiency
The advantages that height is gathered materials on the spot, and production is simple, environmental protection construction, and the actual forced status in simulation casting process is reasonable, it is preferable to solve
The problem that support height of having determined is high, pre- pressure surface is long and narrow, meets the testing requirements of rack bearing power and deflection, shortens construction
Duration saves expense.
2, the precompressed water tank of the huge laced beam steel pipe full framing examines the stability of bracket by precompressed, eliminates
The inelastic deformation of bracket, and according to precompressed report in elastic deformation data, adjust bracket camber value, it is ensured that bracket exists
Deflection in concreting process is in permissible range, and the present invention is in specific operating process, to construction material and work
Skill does not have special requirement, and scene is set up, simple for production, and operation is easy, and applicability is preferable.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is use flow diagram of the present invention.
In figure: 1, steel pipe full framing；2, flitch；3, wooden boards；4, waterproof cloth；5, new waterproof Screw arbor with nut at both-ends；6, it throws
Bar；7, monitoring device；8, rubber ring.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The water tank pre-pressing process of huge laced beam steel pipe full framing referring to FIG. 1-2, including following operating procedure: full
Hall bracket set up → selecting precompressed region → determine prefabricating load → water tank set up → setting of monitoring point arrangement → monitoring instrument →
Water storage hierarchical loading → precompressed monitoring → settlement stability → draining unloads → adjusts rack template → next procedure, props up using in original
Precompressed water tank is made on frame, is preferably resolved the heap of high trestle ballast and stability under deck-siding limited circumstances and is asked
Topic, the force simulation of entire support system is good, and pre-compaction process and actual forced status are close, and construction environmental protection is pollution-free, will not
Surrounding enviroment are caused with big influence；
It has set up first and has designed and produced water tank on the steel pipe full framing of completion, it can be according to the practical projected area of longspan structure beam
And upper part work structure type, load etc. lay water tank, have flexibility and adaptability, live foot is directly utilized when setting up
Hand cradle carries out, and water tank main body is built using flitch, makes water tank bed die, in the production for carrying out two side templates；Two side form of water tank
Stupefied with vertical flitch work time on the outside of plate, stupefied master is double steel pipe transversely strengthening, and paving waterproof cloth, screw rod use new waterproof pair in cabinet
Draw screw rod (included waterproof blocks)；It is tight that the closure such as rubber mat, marine glue are separately added at the perforation of screw rod both ends, cabinet uses wooden boards
Material, cabinet arrange monitoring point and placement monitoring instrument as required after completing, directly poured water pressure to cabinet with water pump, water
Pump lift is optionally about 1.15~1.20 times of water lift height, and water source, which can directly be derived from construction site collecting-tank also, may be derived from originally
75 tapping pipe of diameter is arranged in highest head position in water, and water level is more than automatic drainage when limiting height, and water tank both ends are set respectively
It sets, pipeline can be connect with bottom end drainpipe, and when every grade of load applies completion, monitors each monitoring point absolute altitude and calculate settling amount,
After whole prefabricating loads apply, at interval of monitoring primary within 24 hours and recording each monitoring point absolute altitude, when pre-pressing bracket meets
When precompressed qualification, bracket unloading is carried out, adds unloading symmetrical, balanced in precompressed, is avoided that unbalance loading adversely affects bracket, unloads
After carrying 6 hours, each monitoring point absolute altitude is monitored, and calculate the elastic deformation amount of each monitoring point of bracket, in loading procedure, pre-pressing bracket
Monitoring 36h is not able to satisfy this regulation, checking computations and safety verification should be carried out to bracket again, when can extend precompressed according to the actual situation
Between or take other processing methods.
The precompressed water tank of huge laced beam steel pipe full framing, including steel pipe full framing 1, to prevent bracket basis from meeting water
After reduce bearing capacity, bracket basis should carry out waterproof, drainage works；Different types of bracket should according to engineering structure form,
Load, support height, bracket basis situation etc. select representative region to carry out precompressed, determine precompressed range, flitch
2, wooden boards 3, waterproof cloth 4, new waterproof Screw arbor with nut at both-ends 5, water tank bed die, side form, the equal structural elements of new waterproof Screw arbor with nut at both-ends 5
It should be determined by calculating, bearing capacity, rigidity and stability requirement, flitch 2, wooden boards 3, waterproof cloth 4, new waterproof pair should be able to be met
Screw rod 5 is drawn to constitute water tank, flitch 2 is located at the outermost of water tank, and wooden boards 3 are located at the middle part of water tank, and waterproof cloth 4 is located at water tank
Most inner side, flitch 2, wooden boards 3, waterproof cloth 4 are connected by new waterproof Screw arbor with nut at both-ends 5, are installed on new waterproof Screw arbor with nut at both-ends 5
There is the rubber ring 8 being located on the inside of water tank, the two sides of water tank, which are equipped with, throws bar 6, is equipped with below water tank on steel pipe full framing 1
Monitoring device 7, monitoring device 7 can be used displacement meter and level synchronize be monitored, the content that monitoring device 7 monitors be plus
Monitoring point absolute altitude before load, monitoring point absolute altitude after every grade of load, be loaded onto 100% after at interval of 24 hours monitoring point absolute altitudes, unloading
Monitoring point absolute altitude after 6 hours determines head height (water weight takes 10KN/ cubic metres), water tank by the conversion to prefabricating load
The height preferably specific head high 10CM~30CM of height, water tank floor space are pressed next not less than the practical perspective plane of cast-in-place concrete structure object
It determines.
Wherein, water tank precompressed uses hierarchical loading, presses respectively by prefabricating load 0% → 60% → 80% → 100%, and every grade adds
After the completion of load, first stop next stage load, and once monitored to bracket settling amount at interval of 12 hours, when cradle top is supervised
When measuring point 12 hours settling amount average value is less than 2mm, next stage load can be carried out, every grade of load precompressed performs monitoring data note
Record can disposably drain unloading, pre-pressing bracket Ying Zhi after precompressed detection data reaches design and the requirement in relation to standardizing
It is carried out after the precompressed of frame basis is qualified.
Wherein, water tank floor space is not less than the quasi- practical perspective plane of cast-in-place structural beam, and head height is converted by prefabricating load
Out, pre-pressing bracket loading range is no less than the practical perspective plane of cast-in-place concrete structure object.
Wherein, pre-pressing bracket Load value is no less than the concrete structure dead load and the sum of template weight of bracket receiving
1.1 times, prepressing units internal loading intensity can be obtained according to prefabricating load weight in its prepressing units divided by prepressing units area,
Same prepressing units internal loading facilitates construction to load using uniformly distributed form.
Wherein, the settlement monitoring point arrangement of bracket should be longitudinal disconnected every 1/4 span setting one monitoring along concrete structure
Face, the monitoring point on each monitoring section should not be less than 5, and should be arranged symmetrically, and bracket settlement monitoring point should be in cradle top
It is respectively arranged on the corresponding position of bottom, monitoring precompressed qualification is that the initial 24 hours settling amount average value in each monitoring point is less than
1mm, each initial 72 hours settling amount average value in monitoring point are less than 5mm.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. the water tank pre-pressing process of huge laced beam steel pipe full framing, it is characterised in that: including following operating procedure: Man Tangzhi
Frame, which is set up, → selecting precompressed region → determines that prefabricating load → water tank sets up → monitoring point arrangement → monitoring instrument setting → water storage
Hierarchical loading → precompressed monitoring → settlement stability → draining unloads → adjusts rack template → next procedure；
It has set up first and has designed and produced water tank on the steel pipe full framing of completion, directly carried out using live scaffold when setting up,
Water tank main body is built using flitch, makes water tank bed die, in the production for carrying out two side templates；With perpendicular on the outside of two side template of water tank
Secondary stupefied to flitch work, stupefied master is double steel pipe transversely strengthening, and paving waterproof cloth in cabinet, screw rod uses new waterproof Screw arbor with nut at both-ends (certainly
Band waterproof blocks)；It is tight that the closure such as rubber mat, marine glue are separately added at the perforation of screw rod both ends, cabinet uses wooden boards material, cabinet
Monitoring point and placement monitoring instrument are arranged after completing as required, is directly poured water pressure to cabinet with water pump, every grade of load is applied
It when adding into, monitors each monitoring point absolute altitude and calculates settling amount, after whole prefabricating loads apply, monitored at interval of 24 hours
Once and each monitoring point absolute altitude is recorded, when pre-pressing bracket meets precompressed qualification, carries out bracket unloading, after unloading 6 hours, monitoring
Each monitoring point absolute altitude, and the elastic deformation amount of each monitoring point of bracket is calculated, in loading procedure, pre-pressing bracket monitoring 36h cannot expire
This regulation of foot should carry out checking computations and safety verification to bracket again, can extend according to the actual situation squeeze time or take other
Processing method.
2. the precompressed water tank of huge laced beam steel pipe full framing, it is characterised in that: including steel pipe full framing (1), flitch
(2), wooden boards (3), waterproof cloth (4), new waterproof Screw arbor with nut at both-ends (5), the flitch (2), wooden boards (3), waterproof cloth (4),
New waterproof Screw arbor with nut at both-ends (5) constitutes water tank, and the flitch (2) is located at the outermost of water tank, and the wooden boards (3) are located at water tank
Middle part, the waterproof cloth (4) is located at the most inner side of water tank, and the flitch (2), wooden boards (3), waterproof cloth (4) pass through novel
Water-proof double-unit screw (5) connects, the rubber ring (8) being equipped on the inside of water tank on the new waterproof Screw arbor with nut at both-ends (5), institute
The two sides for stating water tank, which are equipped with, throws bar (6), the monitoring device (7) being equipped with below water tank on the steel pipe full framing (1).
3. the water tank pre-pressing process of huge laced beam steel pipe full framing according to claim 1, it is characterised in that: described
Water tank precompressed uses hierarchical loading, presses respectively by prefabricating load 0% → 60% → 80% → 100%, after the completion of every grade of load, first stops
Only next stage loads, and is once monitored at interval of 12 hours to bracket settling amount, when cradle top monitoring point 12 is small
When settling amount average value is less than 2mm, next stage load can be carried out, every grade of load precompressed performs monitoring data record, examines in precompressed
Measured data can disposably drain unloading after reaching design and the requirement in relation to standardizing.
4. the water tank pre-pressing process of huge laced beam steel pipe full framing according to claim 1, it is characterised in that: described
Water tank floor space is not less than the quasi- practical perspective plane of cast-in-place structural beam, and head height show that pre-pressing bracket adds by prefabricating load conversion
Carry the practical perspective plane that range is no less than cast-in-place concrete structure object.
5. the water tank pre-pressing process of huge laced beam steel pipe full framing according to claim 1, it is characterised in that: described
Pre-pressing bracket Load value is no less than 1.1 times of the concrete structure dead load that bracket is born and the sum of template weight, precompressed list
First internal loading intensity can be obtained according to prefabricating load weight in its prepressing units divided by prepressing units area.
6. the water tank pre-pressing process of huge laced beam steel pipe full framing according to claim 1, it is characterised in that: described
The settlement monitoring point arrangement of bracket should be longitudinal every 1/4 span setting, one monitoring section along concrete structure, and each monitoring is disconnected
Monitoring point on face should not be less than 5, and should be arranged symmetrically, and bracket settlement monitoring point should be in cradle top and bottom corresponding position
On be respectively arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910416166.4A CN110043029A (en) | 2019-05-20 | 2019-05-20 | The precompressed water tank and pre-pressing process of huge laced beam steel pipe full framing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910416166.4A CN110043029A (en) | 2019-05-20 | 2019-05-20 | The precompressed water tank and pre-pressing process of huge laced beam steel pipe full framing |
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Cited By (6)
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|---|---|---|---|---|
| CN111364759A (en) * | 2020-03-18 | 2020-07-03 | 重庆交通建设(集团)有限责任公司 | Prepressing device of full-scale support of giant open-web girder steel pipe and construction method thereof |
| CN111693366A (en) * | 2020-05-27 | 2020-09-22 | 中冶建筑研究总院有限公司 | Construction method for pre-loading structure in limited space |
| CN112030710A (en) * | 2020-09-14 | 2020-12-04 | 武汉一冶建筑安装工程有限责任公司 | Prepressing method and prepressing device for arch springing of arch ring bottom template |
| CN113931075A (en) * | 2021-11-04 | 2022-01-14 | 中铁四局集团有限公司 | Upper-pressing-down-hanging combined hydraulic-method prepressing and construction method for movable formwork |
| CN114427220A (en) * | 2022-03-04 | 2022-05-03 | 中电建十一局工程有限公司 | Porous arch bridge water bag prepressing construction method |
| CN114441307A (en) * | 2021-12-29 | 2022-05-06 | 中铁二十局集团有限公司 | Support pre-pressing method |
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| CN113931075A (en) * | 2021-11-04 | 2022-01-14 | 中铁四局集团有限公司 | Upper-pressing-down-hanging combined hydraulic-method prepressing and construction method for movable formwork |
| CN114441307A (en) * | 2021-12-29 | 2022-05-06 | 中铁二十局集团有限公司 | Support pre-pressing method |
| CN114427220A (en) * | 2022-03-04 | 2022-05-03 | 中电建十一局工程有限公司 | Porous arch bridge water bag prepressing construction method |
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