CN110173051A - Super-length seamless concrete structure and its construction method - Google Patents
Super-length seamless concrete structure and its construction method Download PDFInfo
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- CN110173051A CN110173051A CN201910404132.3A CN201910404132A CN110173051A CN 110173051 A CN110173051 A CN 110173051A CN 201910404132 A CN201910404132 A CN 201910404132A CN 110173051 A CN110173051 A CN 110173051A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6807—Expansion elements for parts cast in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B2001/6818—Joints with swellable parts
Abstract
The present invention relates to a kind of super-length seamless concrete structure and its construction methods, comprising: the multiple expansion reinforcing bands and compensation contraction section being staggered, the bulking agent levels of expansion reinforcing band are greater than the bulking agent levels of compensation contraction section；It is laterally embedded in and drawknot connects expansion reinforcing band and compensates the reinforcing bar stratum reticulare of contraction section；The presstressed reinforcing steel layer for being parallel to each other and connecting with reinforcing bar stratum reticulare, presstressed reinforcing steel layer part is anchored in compensation contraction section, presstressed reinforcing steel layer rest part is placed in corresponding expansion reinforcing band, and corresponding end is stretched out to form stretching end from expansion reinforcing band, in service stage, presstressed reinforcing steel layer is then anchored in corresponding expansion reinforcing band the progress tensioning of presstressed reinforcing steel layer by the stretching end that is forced through according to concrete structure.By the way that presstressed reinforcing steel layer is parallel with reinforcing bar stratum reticulare and connection is arranged, prestress is provided using presstressed reinforcing steel layer and is offset with the stress that the temperature change with service stage is brought to control structure in the gap of service stage.
Description
Technical field
The present invention relates to the realm of building construction, espespecially a kind of super-length seamless concrete structure and its construction method.
Background technique
Concrete structure is longer, the structural constraint stress due to caused by concrete early hydration heat, contraction and temperature change
It is bigger, it inevitably results in concrete and crack occurs.Traditional method is to divide 40m or so in the plate and wall construction of building structure
The concrete construction joint of one 0.8~1m wide is set, and steel bar continuous herein is continuous, and concrete is blocked using steel plate mesh sheet.One
As overall structure concreting complete 60 days after reuse a high label than original structure slightly expanded concrete carry out after
Pour belt construction.It sets post-cast strip by staying and discharges stress, however it is too long to rest the duration, the structure of cleaning and dabbing post-cast strip two sides
The process on surface is various and there are hidden leakage defects.
It is above-mentioned stay set post-cast strip there are aiming at the problem that, pass through setting in the case where not indwelling post-cast strip in the prior art
Expansion reinforcing band solves the problems, such as distress in concrete in the construction process, resists coagulation with the swelling stress of expansion reinforcing band
The tensile stress of soil.
But consider that there are temperature stresses in service stage for concrete structure there are the influence of the temperature difference.Temperature change may be led
Concrete structure is caused crack occur in service stage, there are the hidden danger such as infiltration influences the use of concrete structure.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of super-length seamless concrete structure and its construction are provided
Method solves to consider that there are temperature stresses in service stage for concrete structure there are the influence of the temperature difference in the prior art.Temperature becomes
Change may cause concrete structure and the problem of crack occurs in service stage.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of super-length seamless concrete structure, comprising:
The multiple expansion reinforcing bands and compensation contraction section being staggered, the bulking agent levels of the expansion reinforcing band are greater than institute
State the bulking agent levels of compensation contraction section；
It is laterally embedded in and drawknot connects the expansion reinforcing band and the reinforcing bar stratum reticulare for compensating contraction section；And
The presstressed reinforcing steel layer for being parallel to each other and connecting with the reinforcing bar stratum reticulare, presstressed reinforcing steel layer part are anchored in described
It compensates in contraction section, the presstressed reinforcing steel layer rest part is placed in corresponding expansion reinforcing band, and corresponding end is from described
It stretches out to form stretching end at expansion reinforcing band, in service stage, is forced through the stretching end according to the concrete structure
Tensioning is carried out to the presstressed reinforcing steel layer then the presstressed reinforcing steel layer is anchored in corresponding expansion reinforcing band.
Super-length seamless concrete structure of the present invention further improvement lies in that,
The reinforcing bar stratum reticulare has a pair, and the pair of reinforcing bar stratum reticulare is oppositely arranged up and down；
The presstressed reinforcing steel layer has a pair, and the pair of presstressed reinforcing steel layer is oppositely arranged up and down and is located at the pair of reinforcing bar
Between stratum reticulare, the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare is parallel and mutual binding connection.
Super-length seamless concrete structure of the present invention further improvement lies in that,
The presstressed reinforcing steel layer has part to lay fixed in the compensation contraction section by extruding anchor, the presstressed reinforcing steel
The rest part of layer is arranged with the tubulose cave mould for concrete is isolated.
Super-length seamless concrete structure of the present invention further improvement lies in that,
The presstressed reinforcing steel layer includes spaced multiple horizontal presstressed reinforcing steels and is vertically connected at the horizontal presstressed reinforcing steel
Multiple vertical presstressed reinforcing steels.
Super-length seamless concrete structure of the present invention further improvement lies in that,
The junction of the expansion reinforcing band and the compensation contraction section is vertically equipped with close hole steel wire.
Super-length seamless concrete structure of the present invention further improvement lies in that,
The junction of the expansion reinforcing band and the compensation contraction section is transversely provided with seal plate.
The present invention also provides a kind of construction methods of super-length seamless concrete structure, include the following steps:
In binding the reinforcing bar stratum reticulare being laterally arranged in template；
Presstressed reinforcing steel layer is provided, the presstressed reinforcing steel layer and the reinforcing bar stratum reticulare are arranged in parallel and mutually bind connection；
Isolation structure is provided, the isolation structure is sheathed on to one for wrapping up presstressed reinforcing steel layer on presstressed reinforcing steel layer
Point, and die shape is stretched out into stretching end in the end of the part wrapped up corresponding on presstressed reinforcing steel layer；
It provides two kinds of different concrete of bulking agent levels, is poured using the low concrete of bulking agent levels in the template
It builds to form compensation contraction section, the compensation contraction section will not wrap up the part anchoring of the presstressed reinforcing steel layer of isolation structure；Using swollen
For the high concrete of swollen agent content in pouring to form expansion reinforcing band in the template, the expansion reinforcing band will wrap up isolation structure
Presstressed reinforcing steel layer part anchoring, and the expansion reinforcing band and the compensation contraction section interconnection and be arranged alternately；With
And
In service stage, the stretching end that is forced through according to the concrete structure carries out the presstressed reinforcing steel layer
The presstressed reinforcing steel layer is then anchored in corresponding expansion reinforcing band by tensioning.
The construction method of super-length seamless concrete structure of the present invention further improvement lies in that,
The reinforcing bar stratum reticulare has a pair, and the pair of reinforcing bar stratum reticulare is relatively arranged in the template up and down；
The presstressed reinforcing steel layer has a pair, and the pair of presstressed reinforcing steel layer is oppositely arranged up and down and is located at the pair of steel
Between rib net layer, the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare are arranged in parallel and mutually bind connection.
The construction method of super-length seamless concrete structure of the present invention further improvement lies in that,
During being arranged in parallel by the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare and mutually binding connection, also wrap
Offer extruding anchor, a pair of of spiral bar, tubulose cave mould and the anchor plate for being fixed on described tubulose cave mould one end are provided；
Extruding anchor and a spiral bar are fixed on to one end of the presstressed reinforcing steel layer；And
The reinforcing bar stratum reticulare is fixed on by tubulose cave mould is oblique, and the other end of the presstressed reinforcing steel layer is vertically worn
In anchor plate and run through tubulose cave mould.
The construction method of super-length seamless concrete structure of the present invention further improvement lies in that,
15 ° to 20 ° are set by the angle of tubulose cave mould and horizontal plane.
Super-length seamless concrete structure of the present invention and its construction method the utility model has the advantages that
The present invention solves the problems, such as distress in concrete in the construction process by setting expansion reinforcing band, is reinforced with expanding
The swelling stress of band resists the tensile stress of concrete.What the temperature change for concrete structure in service stage was brought answers
Power, the present invention provide prestress using presstressed reinforcing steel layer by the way that presstressed reinforcing steel layer is parallel with reinforcing bar stratum reticulare and connection is arranged
It is offset with the stress that the temperature change with service stage is brought.Specifically can temperature change according to structure in service stage,
The maximum tension stress generated in structure service stage is calculated, the calculating and arrangement of unbonded prestressing tendon are carried out according to this stress,
Concrete structure is eliminated in the crack of service stage with this.
Detailed description of the invention
Fig. 1 is the longitudinal sectional view of super-length seamless concrete structure of the present invention.
Fig. 2 is the reinforcing bar stratum reticulare of super-length seamless concrete structure of the present invention and the schematic diagram of presstressed reinforcing steel layer.
Fig. 3 and Fig. 4 is the end view of the presstressed reinforcing steel layer of super-length seamless concrete structure of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1, it is shown that the longitudinal sectional view of super-length seamless concrete structure of the present invention.Fig. 2 be overlength of the present invention without
Stitch the reinforcing bar stratum reticulare of concrete structure and the schematic diagram of presstressed reinforcing steel layer.Referring to figs. 1 and 2, overlength of the present invention is seamless mixed
Xtah Crude Clay structure, including multiple units interconnected, the unit include:
Expansion reinforcing band 10 and the compensation contraction section 20 for being connected to 10 opposite end of expansion reinforcing band, the expansion add
The bulking agent levels of strong band 10 are greater than the bulking agent levels of the compensation contraction section 20；
It is laterally embedded in and drawknot connects the expansion reinforcing band 10 and the reinforcing bar stratum reticulare 30 for compensating contraction section 20；With
And
The presstressed reinforcing steel layer 40 for being parallel to each other and connecting with the reinforcing bar stratum reticulare 30,40 part of the presstressed reinforcing steel layer anchoring
In in the compensation contraction section 20,40 rest part of presstressed reinforcing steel layer is placed in corresponding expansion reinforcing band 10, and corresponding
End stretch out to form stretching end from the expansion reinforcing band 10, the stress in service stage, according to the concrete structure
The presstressed reinforcing steel layer 40 is then anchored in by the presstressed reinforcing steel layer 40 progress tensioning by the stretching end corresponding swollen
In swollen reinforcing strip 10.
In the present embodiment, expansion reinforcing band 10 resists concrete pulling stress by swelling stress.It can solve and applying
Distress in concrete problem during work.But concrete structure considers that the influence of the temperature difference still remains temperature and answers in service stage
Power, this stress need to be offset by prestress, the temperature change according to floor in service stage, calculated and used rank in structure
The maximum tension stress that section generates carries out the calculating and arrangement of presstressed reinforcing steel layer 40, and tensioned prestressing bar layer 40 according to this stress,
Concrete structure is controlled in the crack of service stage with this.
Expansion reinforcing band principle: when plate thickness H is much smaller than plate length and width L and H/L≤0.2, plate is in total cross-section tension stress ratio
It is more uniform.Under restraint stress, section will appear normal stress σ x, when normal stress is more than the tensile strength ft of concrete,
Concrete will will appear crack.Cement expansive material generates expansion in course of hardening, in reinforcing bar and adjacent mixed
Under the constraint for coagulating soil, reinforcing bar tension, concrete compression, when reinforcing bar pulling force and concrete pressure balance, formula is as follows: ASσ s=
Ac σ c=AsES·ε2, in formula: σ c- concrete prestress；As- reinforcing steel area；Ac- concrete section product；μ=As/
The Ac ratio of reinforcement；ES-reinforcing bar elasticity modulus；The limited expansion rate of ε 2 --- concrete.Wherein limited expansion rate is mixed with swelling agent
The increase of amount and increase, by adjusting the volume of swelling agent, concrete can get different compressive pre-stresses, larger in normal stress
Place give biggish swelling stress, crack appearance can be effectively controlled in the shrinkage stress of comprehensive collocation structure.
In the present embodiment, ZY swelling agent is selected, is that the special expansive clinker, gypsum and expansion produced with rotary kiln is stablized
Agent intergrinding forms.Compared with traditional UEA, the primary raw material expansive clinker of ZY swelling agent is produced by rotary kiln, product quality
More reliable and more stable, excellent properties are shown: volume is low, and expansion rate is high, and alkali content is low, little loss of slump, and intensity is high.
It in the present embodiment, is C40 according to trial and live template construction, the ZY swelling agent blending amount of compensation contraction section 20
The 8% of concrete cement weight, ZY swelling agent blending amount is the 10% of C40 concrete cement weight in expansion reinforcing band 10.
As a better embodiment of super-length seamless concrete structure of the present invention, the reinforcing bar stratum reticulare 30 has a pair, institute
A pair of of about 30 reinforcing bar stratum reticulare is stated to be oppositely arranged；The presstressed reinforcing steel layer 40 has a pair, the pair of about 40 presstressed reinforcing steel layer
It is oppositely arranged and between the pair of reinforcing bar stratum reticulare 30, the presstressed reinforcing steel layer 40 and corresponding reinforcing bar stratum reticulare 30 are parallel
And mutually binding connection.
In the present embodiment, the reinforcing bar stratum reticulare 30 includes spaced multiple transverse bars 31 and is vertically connected at the cross
Multiple vertical muscle 32 of muscle 31.Vertical distance between a pair of of reinforcing bar stratum reticulare 30 is depending on the thickness of concrete structure.
Presstressed reinforcing steel layer 40 is set during assembling reinforcement stratum reticulare 30, and presstressed reinforcing steel layer 40 includes spaced more
A horizontal presstressed reinforcing steel and the multiple vertical presstressed reinforcing steels for being vertically connected at the horizontal presstressed reinforcing steel.Presstressed reinforcing steel layer 40 and reinforcing bar stratum reticulare
30 is parallel and be correspondingly arranged.Presstressed reinforcing steel layer 40 and the corresponding node of reinforcing bar stratum reticulare 30 are subjected to binding and fixing by iron wire.
The presstressed reinforcing steel layer 40 is used in large-span steel-reinforced concrete structure, is particularly useful public long span building
In beam, column.The amount of deflection of beam can significantly be reduced.With unbounded prestress technology, the trouble of grouting is eliminated.
According to calculating, the maximum tension stress that service stage temperature action generates in structure floor and exterior wall is about 2MPa,
For the crack for controlling floor service stage, unbonded prestressing tendon is arranged in floor.Deformed bar is using high-intensitive low pine
Relaxation prestress wire, tensile strength standard value 1860MPa.
It is overlength of the present invention refering to Fig. 3 and Fig. 4 as a better embodiment of super-length seamless concrete structure of the present invention
The end view of the presstressed reinforcing steel layer of seamless concrete structure.In conjunction with shown in Fig. 1 to Fig. 4, the presstressed reinforcing steel layer 40 has portion
Divide and laid fixed in the compensation contraction section by extruding anchor, the rest part of the presstressed reinforcing steel layer 40 is arranged with for isolation
The tubulose cave mould of concrete.
As a better embodiment of super-length seamless concrete structure of the present invention, the expansion reinforcing band 10 and the benefit
The junction for repaying contraction section 20 is vertically equipped with close hole steel wire 50.The company of the expansion reinforcing band 10 and the compensation contraction section 20
The place of connecing is transversely provided with seal plate 51.Expansion reinforcing band 10 opposite end by seal plate 51 and close hole steel wire 50 and steel mesh
Layer 30 is welded and fixed, and the mesh of close hole steel wire 50 is not more than 5mm, to prevent concrete outflow from entering expansion reinforcing band 10.
The present invention also provides the construction methods of super-length seamless concrete structure, include the following steps:
In binding the reinforcing bar stratum reticulare 30 being laterally arranged in template；
Presstressed reinforcing steel layer 40 is provided, the presstressed reinforcing steel layer 40 and the reinforcing bar stratum reticulare 30 are arranged in parallel and mutually bound
Connection；
Isolation structure is provided, the isolation structure is sheathed on presstressed reinforcing steel layer 40 and wraps up the one of presstressed reinforcing steel layer 40
Part, and die shape is stretched out into stretching end in the end of the part wrapped up corresponding on presstressed reinforcing steel layer 40；
It provides two kinds of different concrete of bulking agent levels, is poured using the low concrete of bulking agent levels in the template
It builds to form compensation contraction section 20, the compensation contraction section 20 will not wrap up the part anchoring of the presstressed reinforcing steel layer 40 of isolation structure；
Using the high concrete of bulking agent levels in pouring to form expansion reinforcing band 10 in the template, the expansion reinforcing band 10 will packet
The part anchoring of the presstressed reinforcing steel layer 40 of isolation structure is wrapped up in, and the expansion reinforcing band 10 is mutually interconnected with the compensation contraction section 20
It connects and is arranged alternately；And
In service stage, according to the concrete structure be forced through the stretching end to the presstressed reinforcing steel layer 40 into
The presstressed reinforcing steel layer 40 is then anchored in corresponding expansion reinforcing band 10 by row tensioning.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention,
The reinforcing bar stratum reticulare 30 has a pair, and the pair of about 30 reinforcing bar stratum reticulare is relatively arranged in the template；
The presstressed reinforcing steel layer 40 has a pair, and the pair of about 40 presstressed reinforcing steel layer is oppositely arranged and is located at described one
To between reinforcing bar stratum reticulare 30, the presstressed reinforcing steel layer 40 and corresponding reinforcing bar stratum reticulare 30 are arranged in parallel and mutually bind connection.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention,
In conjunction with shown in Fig. 1 to Fig. 4, the presstressed reinforcing steel layer 40 and corresponding reinforcing bar stratum reticulare 30 are being arranged in parallel and mutually
It further include that extruding anchor 41 is provided, a pair of of spiral bar 42 and is fixed on the tubulose cave at tubulose cave mould 43 during binding connection
The anchor plate 44 of 43 one end of mould；
Extruding anchor 41 and a spiral bar 42 are fixed on to one end of the presstressed reinforcing steel layer 40；And
The reinforcing bar stratum reticulare 30 is fixed on by tubulose cave mould 43 is oblique, and the other end of the presstressed reinforcing steel layer 40 is hung down
Direct puncture is set to anchor plate 44 and runs through tubulose cave mould 43.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention, tubulose cave mould 43
Angle with horizontal plane is 15 ° to 20 °.The top of tubulose cave mould 43 is oblique after pouring protrudes out concrete structural surface.Pipe
After shape cave mould takes out demoulding, skewed slot is formed at concrete structure, skewed slot facilitates subsequent set for wearing for presstressed reinforcing steel
It sets jack and carrys out tensioned prestressing bar.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention, in the present embodiment,
It is easy after vibrating at the position of the reinforcing bar stratum reticulare 30 of Overlong Concrete Structure, early-age plastic crack occurs and sedimentation is split before initial set
Seam need to be eliminated by control blanking and secondary vibration, in order to avoid becoming the defect of concrete and stress being caused to be concentrated, influence temperature
Spend the control efficiency of contraction fissure.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention, with polishing before final set
Machine smears pressure repeatedly repeatedly, prevents the shrinking joint of concrete surface from occurring.
One better embodiment of the construction method as super-length seamless concrete structure of the present invention, expansive concrete need
The expansion performance of abundant wet curing competence exertion ZY swelling agent, answers moisture-keeping maintaining 14d after concreting.
Super-length seamless concrete structure of the present invention and its construction method have the beneficial effect that
The present invention solves the problems, such as distress in concrete in the construction process by setting expansion reinforcing band, is reinforced with expanding
The swelling stress of band resists the tensile stress of concrete.What the temperature change for concrete structure in service stage was brought answers
Power, the present invention provide prestress using presstressed reinforcing steel layer by the way that presstressed reinforcing steel layer is parallel with reinforcing bar stratum reticulare and connection is arranged
It is offset with the stress that the temperature change with service stage is brought.Specifically can temperature change according to structure in service stage,
The maximum tension stress generated in structure service stage is calculated, the calculating and arrangement of unbonded prestressing tendon are carried out according to this stress,
Concrete structure is eliminated in the crack of service stage with this.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of super-length seamless concrete structure characterized by comprising
The multiple expansion reinforcing bands and compensation contraction section being staggered, the bulking agent levels of the expansion reinforcing band are greater than the benefit
Repay the bulking agent levels of contraction section；
It is laterally embedded in and drawknot connects the expansion reinforcing band and the reinforcing bar stratum reticulare for compensating contraction section；And
The presstressed reinforcing steel layer for being parallel to each other and connecting with the reinforcing bar stratum reticulare, presstressed reinforcing steel layer part are anchored in the compensation
In contraction section, the presstressed reinforcing steel layer rest part is placed in corresponding expansion reinforcing band, and corresponding end is from the expansion
It stretches out to form stretching end at reinforcing strip, in service stage, is forced through the stretching end to institute according to the concrete structure
The progress tensioning of presstressed reinforcing steel layer is stated then the presstressed reinforcing steel layer is anchored in corresponding expansion reinforcing band.
2. super-length seamless concrete structure as described in claim 1, which is characterized in that
The reinforcing bar stratum reticulare has a pair, and the pair of reinforcing bar stratum reticulare is oppositely arranged up and down；
The presstressed reinforcing steel layer has a pair, and the pair of presstressed reinforcing steel layer is oppositely arranged up and down and is located at the pair of reinforcing bar stratum reticulare
Between, the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare is parallel and mutual binding connection.
3. super-length seamless concrete structure as described in claim 1, which is characterized in that
The presstressed reinforcing steel layer has part to lay fixed in the compensation contraction section by extruding anchor, the presstressed reinforcing steel layer
Rest part is arranged with the tubulose cave mould for concrete is isolated.
4. super-length seamless concrete structure as described in claim 1, which is characterized in that
The presstressed reinforcing steel layer includes spaced multiple horizontal presstressed reinforcing steels and is vertically connected at the more of the horizontal presstressed reinforcing steel
A vertical presstressed reinforcing steel.
5. super-length seamless concrete structure as described in claim 1, which is characterized in that
The junction of the expansion reinforcing band and the compensation contraction section is vertically equipped with close hole steel wire.
6. super-length seamless concrete structure as described in claim 1, which is characterized in that
The junction of the expansion reinforcing band and the compensation contraction section is transversely provided with seal plate.
7. a kind of construction method of super-length seamless concrete structure, which comprises the steps of:
In binding the reinforcing bar stratum reticulare being laterally arranged in template；
Presstressed reinforcing steel layer is provided, the presstressed reinforcing steel layer and the reinforcing bar stratum reticulare are arranged in parallel and mutually bind connection；
Isolation structure is provided, the isolation structure is sheathed on to a part for wrapping up presstressed reinforcing steel layer on presstressed reinforcing steel layer, and
Die shape is stretched out into stretching end in the end of the part wrapped up corresponding on presstressed reinforcing steel layer；
There is provided bulking agent levels different two kinds of concrete, using the low concrete of bulking agent levels in pouring shape in the template
At compensation contraction section, the compensation contraction section will not wrap up the part anchoring of the presstressed reinforcing steel layer of isolation structure；Using swelling agent
For the high concrete of content in pouring to form expansion reinforcing band in the template, the expansion reinforcing band will wrap up the pre- of isolation structure
The part of stress rib layer anchors, and the expansion reinforcing band and the compensation contraction section are connected with each other and are arranged alternately；And
In service stage, the stretching end that is forced through according to the concrete structure carries out tensioning to the presstressed reinforcing steel layer
Then the presstressed reinforcing steel layer is anchored in corresponding expansion reinforcing band.
8. the construction method of super-length seamless concrete structure as claimed in claim 7, which is characterized in that
The reinforcing bar stratum reticulare has a pair, and the pair of reinforcing bar stratum reticulare is relatively arranged in the template up and down；
The presstressed reinforcing steel layer has a pair, and the pair of presstressed reinforcing steel layer is oppositely arranged up and down and is located at the pair of steel mesh
Between layer, the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare are arranged in parallel and mutually bind connection.
9. the construction method of super-length seamless concrete structure as claimed in claim 8, which is characterized in that
It further include mentioning during being arranged in parallel by the presstressed reinforcing steel layer and corresponding reinforcing bar stratum reticulare and mutually binding connection
For extruding anchor, a pair of of spiral bar, tubulose cave mould and the anchor plate for being fixed on described tubulose cave mould one end；
Extruding anchor and a spiral bar are fixed on to one end of the presstressed reinforcing steel layer；And
The reinforcing bar stratum reticulare is fixed on by tubulose cave mould is oblique, and the other end of the presstressed reinforcing steel layer is vertically arranged in anchor
Backing plate and run through tubulose cave mould.
10. the construction method of super-length seamless concrete structure as claimed in claim 9, which is characterized in that by the tubulose cave
The angle of mould and horizontal plane is set as 15 ° to 20 °.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112282166A (en) * | 2020-09-25 | 2021-01-29 | 中国建筑第八工程局有限公司 | Construction method for jumping over warehouse with ultra-long concrete structure |
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| CN102677899A (en) * | 2012-03-09 | 2012-09-19 | 中石油东北炼化工程有限公司吉林设计院 | Seamless structural method of overlong reinforced concrete pond |
| CN203475700U (en) * | 2013-08-09 | 2014-03-12 | 长江勘测规划设计研究有限责任公司 | P-type anchorage device at fixed end |
| CN204326262U (en) * | 2014-12-17 | 2015-05-13 | 武汉一冶建筑安装工程有限责任公司 | SY-K expansive concrete expansion reinforcing band |
| CN105544595A (en) * | 2015-12-29 | 2016-05-04 | 河南省电力勘测设计院 | Prestressed reinforced concrete cast-in-place turbine generator base |
| CN105863088A (en) * | 2016-06-06 | 2016-08-17 | 山东万鑫建设有限公司 | Super-long floor concrete post-pouring seam design and construction process |
| CN106193340A (en) * | 2016-08-26 | 2016-12-07 | 杭州江润科技有限公司 | Cast-in-place prestressing without bondn ultralong floor combination type reinforcing strip anti-cracking structure and construction method |
| CN107700846A (en) * | 2017-11-14 | 2018-02-16 | 中建四局第六建筑工程有限公司 | A kind of post-cast strip concrete arrester and its application method |
| CN108442543A (en) * | 2018-03-29 | 2018-08-24 | 中国十七冶集团有限公司 | A kind of the staged reinforcing strip system and construction method of continuous concreting |
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| CN112282166A (en) * | 2020-09-25 | 2021-01-29 | 中国建筑第八工程局有限公司 | Construction method for jumping over warehouse with ultra-long concrete structure |
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