CN104532961A - Connection method and structure for reinforced concrete cantilever beam and main body concrete - Google Patents

Connection method and structure for reinforced concrete cantilever beam and main body concrete Download PDF

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Publication number
CN104532961A
CN104532961A CN201410839089.0A CN201410839089A CN104532961A CN 104532961 A CN104532961 A CN 104532961A CN 201410839089 A CN201410839089 A CN 201410839089A CN 104532961 A CN104532961 A CN 104532961A
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China
Prior art keywords
pin
concrete
main
precast
latch
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CN201410839089.0A
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Chinese (zh)
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CN104532961B (en
Inventor
苏鹏
郝鹏
王荣荣
何福娟
邱焕峰
张斌
程瑞林
占文婷
张合作
史鹏飞
陈敬
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中国电建集团贵阳勘测设计研究院有限公司
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Priority to CN201410839089.0A priority Critical patent/CN104532961B/en
Publication of CN104532961A publication Critical patent/CN104532961A/en
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Abstract

The invention discloses a connection method and structure for a reinforced concrete cantilever beam and main body concrete. According to the method, the reinforced concrete cantilever beam adopts a precast beam, and the precast beam and the main body concrete are in cuttage grafting and fixed through a stop pin anchor. The reinforced concrete cantilever beam adopts a precast beam, and connection structure for connecting the reinforced concrete cantilever beam and the main body concrete through the stop pin anchor is an initiate in the building field. Compared with an ordinary joint bar, safety is ensured. According to the connection method and structure, the preserved joint bar in a beam sump in the prior art is eliminated, project investment is reduced, concrete of the beam sump is not cast in the later period, therefore, the construction procedure is simplified, and the main body concrete can go up quickly and continuously.

Description

Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body and structure

Technical field

the present invention relates to a kind of Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body and structure, belong to building engineering construction method and technical field of structures.

Background technology

cast-in-place or the precast construction of the many employings of existing reinforced concrete beam.According to construction period, reserved joint bar and hitch is adopted for cast-in-situ concrete beam generally more, and the form of construction work that beam adopts the later stage to fill, this structure needs the joint bar arranging some in hitch reserved on main body concrete surface in advance, this causes certain construction interference to main body concrete construction, and the concrete in hitch is difficult to build closely knit; For precast beam structure, the general force structure adopting two ends freely-supported more, and semi girder be there is no substantially to the application example of prefabricated aspect.Therefore, existing Reinforced Concrete Cantilever Beams and the concrete connected mode of main body or not ideal enough, can not meet the construction requirement of construction work.

Summary of the invention

the object of the invention is to, a kind of Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body and structure are provided, there is certain interference with the semi girder solving existing Cast-in-situs type to construction and the relatively low problem of construction quality fraction, thus overcome the deficiencies in the prior art.

technical scheme of the present invention is achieved in that

a kind of Reinforced Concrete Cantilever Beams of the present invention and the concrete method of attachment of main body are that the Reinforced Concrete Cantilever Beams of the method adopts precast beam, adopts inserting mode between precast beam and main body concrete, and through latch anchor and position.

in preceding method, when prefabricated reinforced concrete semi girder, reserve beam pin-and-hole in precast beam one end.

in preceding method, when building main body concrete, pre-reserved beam sump on main body concrete, and reserve body pin in the bottom surface of hitch, the position of body pin is corresponding with the position of beam pin-and-hole.

in preceding method, the degree of depth of described beam pin-and-hole is slightly larger than latch length; The degree of depth of body pin is the half of latch length.

in preceding method, between described precast beam and hitch, and latch and be matched in clearance between beam pin-and-hole and body pin, gap is 5 ~ 10mm.

in preceding method, when described precast beam is connected with main body concrete, sling downwards by the beam pin-and-hole of crane gear by precast beam, the hitch on the end alignment main body concrete of precast beam; Then latch put into beam pin-and-hole and upwards push up pressure latch with rod-like articles; Hitch is inserted in precast beam end, after latch enters hitch mouth with precast beam, decontrols rod-like articles; Continue precast beam to push hitch, when precast beam arrives behind precalculated position, to move to above body pin latch under Gravitative Loads bottom latch completely and automatically fall into body pin.

the of the present invention a kind of Reinforced Concrete Cantilever Beams formed as stated above and the concrete syndeton of main body are that this structure comprises main body concrete and reinforced concrete semi girder; Reinforced Concrete Cantilever Beams is precast beam, and the bottom surface of precast beam one end is provided with beam pin-and-hole; The concrete side of main body is provided with hitch, and the bottom surface of hitch is provided with body pin, is provided with latch in body pin and beam pin-and-hole.

in aforementioned structure, the position of described body pin is corresponding with the position of beam pin-and-hole; The degree of depth of beam pin-and-hole is slightly larger than latch length; The degree of depth of body pin is the half of latch length.

in aforementioned structure, between described precast beam and hitch, and latch and be matched in clearance between beam pin-and-hole and body pin, gap is 5 ~ 10mm.

in aforementioned structure, described latch is reinforced concrete precast member or steel beam column.

owing to have employed technique scheme, compared with prior art, Reinforced Concrete Cantilever Beams of the present invention adopts prefabrication system, and still belongs to pioneering by latch and the concrete syndeton of main body at building field in the present invention.The more common joint bar of safety is more guaranteed.Present invention eliminates joint bar reserved in prior art hitch, reduce construction investment, also do not need the later stage to build hitch concrete again, simplify working procedure, thus main body concrete can rise continuously fast simultaneously.The present invention adopts reserved latch to meet the interior anchoring requirement of precast beam, overcoming original concrete semi girder due to construction period is difficult to be synchronized with the shortcoming that main body concrete carries out building, and reserved joint bar carry out the concrete beam later stage when building hitch be difficult to fill closely knit shortcoming.

Accompanying drawing explanation

fig. 1 is structural representation of the present invention.

being labeled as in accompanying drawing: 1-precast beam, 2-main body concrete, 3-hitch, 4-body pin, 5-beam pin-and-hole, 6-latch, 7-rod-like articles.

Detailed description of the invention

below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.

a kind of Reinforced Concrete Cantilever Beams of the present invention and the concrete method of attachment of main body, as shown in Figure 1, the Reinforced Concrete Cantilever Beams of the method adopts precast beam 1, adopts inserting mode between precast beam 1 and main body concrete 2, and through latch 6 anchor and position.When prefabricated reinforced concrete semi girder, reserve beam pin-and-hole 5 in precast beam 1 one end.When building main body concrete 2, pre-reserved beam sump 3 on main body concrete 2, and reserve body pin 4 in the bottom surface of hitch 3, the position of body pin 4 is corresponding with the position of beam pin-and-hole 5.The degree of depth of beam pin-and-hole 5 is slightly larger than latch 6 length; The degree of depth of body pin 4 is the half of latch 6 length.Between precast beam 1 and hitch 3, and latch 6 and be matched in clearance between beam pin-and-hole 5 and body pin 4, gap is 5 ~ 10mm.When precast beam 1 is connected with main body concrete 2, sling downwards by the beam pin-and-hole 5 of crane gear by precast beam 1, the hitch 3 on the end alignment main body concrete 2 of precast beam 1; Then latch 6 put into beam pin-and-hole 5 and upwards push up pressure latch 6 with rod-like articles 7; Hitch 3 is inserted in precast beam 1 end, after latch 6 enters hitch mouth with precast beam 1, decontrols rod-like articles 7; Continue precast beam 1 to push hitch 3, after precast beam 1 arrives precalculated position, to move to above body pin 4 latch 6 under Gravitative Loads bottom latch 6 completely and automatically fall into body pin 4, by precast beam 1 anchor and position.If when the load that bears of semi girder top is relatively large, also precast beam 1 and horizontal plane can be formed certain minute angle (beam far-end is a little more than anchored end), to strengthen the supporting capacity of this prefabricated semi girder further.

the of the present invention a kind of Reinforced Concrete Cantilever Beams formed as stated above and the concrete syndeton of main body, as shown in Figure 1, this syndeton comprises main body concrete 2 and Reinforced Concrete Cantilever Beams; Reinforced Concrete Cantilever Beams is precast beam 1, and the bottom surface of precast beam 1 one end is provided with beam pin-and-hole 5; The side of main body concrete 2 is provided with hitch 3, and the bottom surface of hitch 3 is provided with body pin 4, is provided with latch 6 in body pin 4 and beam pin-and-hole 5.The position of body pin 4 is corresponding with the position of beam pin-and-hole 5; The degree of depth of beam pin-and-hole 5 is slightly larger than latch 6 length; The degree of depth of body pin 4 is the half of latch 6 length.Between precast beam 1 and hitch 3, and latch 6 and be matched in clearance between beam pin-and-hole 5 and body pin 4, gap is 5 ~ 10mm.Latch 6 is reinforced concrete precast member or steel beam column.

Embodiment

as shown in Figure 1, drawn the diverse location of three precast beams in Fig. 1, the A beam in Fig. 1 is state diagram when not inserting hitch 3; B beam in Fig. 1 is state diagram when inserting hitch 3, is direction of insertion shown in the arrow in figure, during insertion with rod-like articles 7 upwards push up press latch 6, prevent latch 6 during insertion from beam pin-and-hole out; C beam in Fig. 1 is state diagram when inserting hitch 3 completely.During concrete enforcement, main body concrete 2 is pre-reserved beam sump 3 in casting process, simultaneously reserved body pin 4 bottom hitch, and main body concrete can continue to rise afterwards.Reinforced concrete prefabricated beam can select other any place to carry out prefabricated.Reserve beam pin-and-hole 5 at the anchored end correct position of beam, place the load that latch 6(bears according to semi girder in beam pin-and-hole 5, latch 6 can adopt reinforced concrete structure, also can adopt steel work).Can send in hitch 3 by girder construction (band latch) entirety during precast beam install, latch (bottom certain length) can fall in body pin 4 reserved in hitch automatically, to realize automatically locking and anchoring function.The structure of this example does not need reserved joint bar, does not also need the later stage to build hitch concrete, simplifies the working procedure of cantilevered concrete beam, also further ensure construction quality simultaneously, and first precast construction is applied to Reinforced Concrete Cantilever Beams.The present invention is applicable to all cantilever beam structures.

the present invention not only can be used for semi girder, if made by hitch U-shaped or increased by the height of hitch, also can be used for beam two ends and is connected with main body is concrete.Owing to being non-rigid syndeton between central sill of the present invention and main body concrete, and leaving certain interval between beam and main body concrete, so have certain wider space when being subject to expanding with heat and contract with cold, can not internal stress be produced.Also there is certain cushion space time vibrated, be not easy to crack.When building main body concrete, construction interference can not be caused, the concrete pouring quality of main body can be improved.Its structure is made more to be tending towards reasonable.There is certain antihunt action.

Claims (10)

1. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body, is characterized in that: the Reinforced Concrete Cantilever Beams of the method adopts precast beam, adopts inserting mode between precast beam and main body concrete, and through latch anchor and position.
2. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body according to claim 1, is characterized in that: when prefabricated reinforced concrete semi girder, reserve beam pin-and-hole in precast beam one end.
3. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body according to claim 1, it is characterized in that: when building main body concrete, pre-reserved beam sump on main body concrete, and reserve body pin in the bottom surface of hitch, the position of body pin is corresponding with the position of beam pin-and-hole.
4. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body according to claim 1, is characterized in that: the degree of depth of described beam pin-and-hole is slightly larger than latch length; The degree of depth of body pin is the half of latch length.
5. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body according to claim 1, is characterized in that: between described precast beam and hitch, and latch and be matched in clearance between beam pin-and-hole and body pin, and gap is 5 ~ 10mm.
6. Reinforced Concrete Cantilever Beams and the concrete method of attachment of main body according to claim 1, it is characterized in that: when described precast beam is connected with main body concrete, sling downwards by the beam pin-and-hole of crane gear by precast beam, the hitch on the end alignment main body concrete of precast beam; Then latch put into beam pin-and-hole and upwards push up pressure latch with rod-like articles; Hitch is inserted in precast beam end, after latch enters hitch mouth with precast beam, decontrols rod-like articles; Continue precast beam to push hitch, when precast beam arrives behind precalculated position, to move to above body pin latch under Gravitative Loads bottom latch completely and automatically fall into body pin.
7. Reinforced Concrete Cantilever Beams and the concrete syndeton of main body, comprise main body concrete (2) and Reinforced Concrete Cantilever Beams; It is characterized in that: Reinforced Concrete Cantilever Beams is precast beam (1), the bottom surface of precast beam (1) one end is provided with beam pin-and-hole (5); The side of main body concrete (2) is provided with hitch (3), and the bottom surface of hitch (3) is provided with body pin (4), is provided with latch (6) in body pin (4) and beam pin-and-hole (5).
8. Reinforced Concrete Cantilever Beams and the concrete syndeton of main body according to claim 7, is characterized in that: the position of described body pin (4) is corresponding with the position of beam pin-and-hole (5); The degree of depth of beam pin-and-hole (5) is greater than latch (6) length; The degree of depth of body pin (4) is the half of latch (6) length.
9. Reinforced Concrete Cantilever Beams and the concrete syndeton of main body according to claim 7, it is characterized in that: between described precast beam (1) and hitch (3), and latch (6) and be matched in clearance between beam pin-and-hole (5) and body pin (4), its gap is 5 ~ 10mm.
10. Reinforced Concrete Cantilever Beams and the concrete syndeton of main body according to claim 8 or claim 9, is characterized in that: described latch (6) is reinforced concrete precast member or steel beam column.
CN201410839089.0A 2014-12-30 2014-12-30 Connection method and structure for reinforced concrete cantilever beam and main body concrete CN104532961B (en)

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CN104532961B CN104532961B (en) 2017-02-22

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024036A (en) * 1988-08-12 1991-06-18 Johnson David W Interlocking support structures
CN2319464Y (en) * 1997-08-20 1999-05-19 赵凤岐 Mounting/dismounting pre-fab members
CN1704537A (en) * 2004-05-27 2005-12-07 同济大学 Totally assembled type prefabricated concrete structure system
CN200975026Y (en) * 2006-12-04 2007-11-14 韩诗武 Movable frame junction
CN102561525A (en) * 2012-01-18 2012-07-11 安徽省徽州古典园林建设有限公司 Connecting structure for wooden buildings
CN103104040A (en) * 2013-03-08 2013-05-15 郑州大学 Assembled framework beam-column joint adopting vertical connection and construction method thereof
CN203834968U (en) * 2014-03-13 2014-09-17 洛阳理工学院 Steel-wood combined strengthening device for historic building timer frame
CN204401804U (en) * 2014-12-30 2015-06-17 中国电建集团贵阳勘测设计研究院有限公司 Reinforced Concrete Cantilever Beams and the concrete syndeton of main body

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024036A (en) * 1988-08-12 1991-06-18 Johnson David W Interlocking support structures
CN2319464Y (en) * 1997-08-20 1999-05-19 赵凤岐 Mounting/dismounting pre-fab members
CN1704537A (en) * 2004-05-27 2005-12-07 同济大学 Totally assembled type prefabricated concrete structure system
CN200975026Y (en) * 2006-12-04 2007-11-14 韩诗武 Movable frame junction
CN102561525A (en) * 2012-01-18 2012-07-11 安徽省徽州古典园林建设有限公司 Connecting structure for wooden buildings
CN103104040A (en) * 2013-03-08 2013-05-15 郑州大学 Assembled framework beam-column joint adopting vertical connection and construction method thereof
CN203834968U (en) * 2014-03-13 2014-09-17 洛阳理工学院 Steel-wood combined strengthening device for historic building timer frame
CN204401804U (en) * 2014-12-30 2015-06-17 中国电建集团贵阳勘测设计研究院有限公司 Reinforced Concrete Cantilever Beams and the concrete syndeton of main body

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