CN201474109U

CN201474109U - Prefabricated and cast-in-situ mixed dual binding beams

Info

Publication number: CN201474109U
Application number: CN2009203022346U
Authority: CN
Inventors: 姚攀峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-16
Filing date: 2009-04-16
Publication date: 2010-05-19
Anticipated expiration: 2019-04-16

Abstract

The utility model relates to prefabricated and cast-in-situ mixed dual binding beams, which is characterized in that there are two binding beams, one is a prefabricated binding beam and the other is a cast-in-situ binding beam; the cast-in-situ binding beam is located on the top face of the prefabricated binding beam and the lower surface of the cast-in-situ binding beam is adhered on the upper surface of the prefabricated binding beam. In construction, the upper surface of the prefabricated binding beam is as a bottom formwork for the cast-in-situ binding beam; the binding beam with a large section is divided into two parts so as to reduce the binding beam rigidity and decrease the destroying probability of the binding beam under the earthquake load; the upper surface of the prefabricated binding beam is as the bottom formwork for the cast-in-situ binding beam so as to facilitate to construction and improve the operation efficiency.

Description

Prefabricated, cast-in-place hybrid doubly-linked beam

(1) technical field

The utility model relates to a kind of prefabricated, cast-in-place hybrid doubly-linked beam.The utility model belongs to technical field of structural engineering.

(2) background technology

Coupling beam is as one of basic building block in the structural systems such as shear wall, framework-shear wall, and whether its safety is directly connected to whole solitary building safety.The general span of traditional coupling beam is less, sectional dimension is bigger, so himself rigidity is bigger, in case burst such as earthquake dynamic load arrives, the seismic forces that absorbs is bigger, often take the lead in destroying, just be no lack of such example in 5.12 Wenchuan earthquakes, many highrise buildings all are to collapse owing to coupling beam produces the crack.

Given this, structure design teacher has proposed a kind of doubly-linked beam notion, so-called doubly-linked beam is in the small bore coupling beam that original heavy in section coupling beam is decomposed into more than two or two, to reach the rigidity that reduces single small bore coupling beam, thereby reduce the seismic forces that coupling beam absorbs, reduce the destruction in earthquake.Evidence, the more traditional single coupling beam of ability of burst such as the opposing earthquake of doubly-linked beam dynamic load is eager to excel a lot, but because the doubly-linked beam needs scene cast-in-situ concrete at twice, difficulty of construction is bigger, in application in engineering seldom.

(3) utility model content

The purpose of this utility model provides a kind of prefabricated, cast-in-place hybrid doubly-linked beam and job practices thereof, solve the technical problem that traditional single coupling beam takes place under the effect of bigger burst dynamic load by destruction easily; And solve traditional doubly-linked beam constructional difficulties, be difficult to carry out large-scale problem.

For achieving the above object, the utility model adopts following technical scheme:

Prefabricated, cast-in-place hybrid doubly-linked beam, two ends are overlapped on body of wall or the support column, it is characterized in that: coupling beam is two, one is prefabricated coupling beam, another root is cast-in-place coupling beam, and wherein cast-in-place coupling beam is positioned at prefabricated coupling beam end face, and the soffit of cast-in-place coupling beam is close to the upper surface of prefabricated coupling beam.

Described cast-in-place coupling beam and prefabricated coupling beam cross-sectional sizes are identical or different.

Described prefabricated coupling beam is the prefabricated coupling beam at the prefabricated coupling beam of total cross-section, band hole or the prefabricated coupling beam of band packed layer.

The prefabricated coupling beam at described band hole can be integral prefabricated member, also the combination prefabricated units that can be made up of prefabricated top beam, prefabricated lower beam, prefabricated post.

The side of described prefabricated coupling beam is concrete or is wire lath.

Described packed layer is cement mortar, plain concrete, haydite concrete or release agent coating.

Described cast-in-place coupling beam and prefabricated coupling beam are reinforced concrete coupling beams or steel reinforced concrete coupling beam.

Reinforcing bar is steel plate, H shaped steel, i iron or box-type section shaped steel in the described steel reinforced concrete coupling beam.

Longitudinal stress reinforcing bar, stirrup, waist muscle and lacing wire are set in described reinforced concrete coupling beams and the steel reinforced concrete coupling beam.

Longitudinal stress reinforcing bar in described prefabricated coupling beam and the cast-in-place coupling beam or reinforcing bar stretches in the body of wall or in the support column.

Compared with prior art the utlity model has following characteristics and beneficial effect:

1. because the utility model adopts prefabricated and cast-in-place hybrid doubly-linked beam, reduce relatively in the cross section of single coupling beam, thereby reduce the rigidity of single small bore coupling beam, the deformation energy that single coupling beam absorbs under the dynamic load effect is just more little, the probability that takes place to destroy reduces, and therefore says that this stress performance prefabricated and cast-in-place hybrid doubly-linked beam larger cross-section coupling beam is good.

2. because the utility model adopts prefabricated and cast-in-place hybrid doubly-linked beam, in the scope that guarantees whole coupling beam safety, can artificially regulate the cross section of prefabricated coupling beam and cast-in-place coupling beam, realize economic optimum; As in the scope of guaranteed strength and rigidity, can suitably increase the cross section of prefabricated coupling beam, the cross section of reducing cast-in-place coupling beam, simultaneously, under the situation that does not influence prefabricated connection bearing capacity, can adopt the prefabricated coupling beam for the treatment of the hole, can reduce reinforcing bar and concrete amount like this, save cost;

3. because the utility model has adopted prefabricated coupling beam, prefabricated coupling beam can shift to an earlier date completion of processing, can save the engineering time greatly, improve efficiency of construction, the bed die of the cast-in-place coupling beam of prefabricated in addition coupling beam double as, having overcome the traditional double coupling beam needs the on-the-spot shortcoming of cast-in-situ concrete at twice, convenient and easy, the efficient height makes prefabricated and cast-in-place hybrid doubly-linked beam large-scale application become possibility.

4. because the utility model adopts prefabricated and cast-in-place hybrid doubly-linked beam, compare traditional single heavy in section coupling beam and traditional cast-in-place doubly-linked beam, the on-the-spot concrete area that needs cast still less, the job site is because dust and building waste that concrete pouring causes significantly reduce environmental protection more.

The utility model has overcome traditional single coupling beam and has been easy to destroy, and doubly-linked beam constructional difficulties is difficult to the shortcoming of large-scale application.

The utility model can be widely used in high level or the structural systems such as superelevation story shear wall, framework-shear wall.

(4) description of drawings

The utility model is described in more detail below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is Figure 1A-A sectional drawing;

Fig. 3 is the structural representation of the utility model embodiment one;

Fig. 4 is Fig. 3 B-B sectional drawing;

Fig. 5 is the structural representation of the utility model embodiment two;

Fig. 6 is Fig. 4 C-C sectional drawing;

Fig. 7 is a reinforced concrete cast-in-situ coupling beam schematic cross-section;

Fig. 8 is the cast-in-place coupling beam schematic cross-section of steel reinforced concrete.

Fig. 9 is the schematic perspective view of Fig. 2;

Figure 10 is the schematic perspective view of Fig. 4;

Figure 11 is the schematic perspective view of Fig. 6.

Figure 12 is made of the schematic perspective view of the prefabricated coupling beam in band hole prefabricated top beam, prefabricated lower beam, prefabricated post.

Reference numeral: 1-body of wall, the prefabricated coupling beam of 2-, the cast-in-place coupling beam of 3-, 4-hole, 5-packed layer, 6-longitudinal stress reinforcing bar, 7-stirrup, 8-waist muscle, 9-lacing wire, 10-reinforcing bar, the prefabricated top of 11-beam, the prefabricated lower beam of 12-, 13-prefabricated post.

(5) specific embodiment

The utility model embodiment one is referring to Fig. 1, Fig. 2, Fig. 9, Fig. 7 and shown in Figure 8, this prefabricated, cast-in-place hybrid doubly-linked beam, two ends are overlapped on body of wall 1 or the support column, it is characterized in that: coupling beam is at least two, one is prefabricated coupling beam 2, all the other are cast-in-place coupling beam 3, and wherein cast-in-place coupling beam 3 is positioned at the end face of prefabricated coupling beam 2, and the soffit of cast-in-place coupling beam 3 is close to the upper surface of prefabricated coupling beam 2; The cross-sectional sizes of described cast-in-place coupling beam 3 and prefabricated coupling beam 2 is identical or different; Described prefabricated coupling beam 2 is the prefabricated coupling beam of total cross-section; The side of described prefabricated coupling beam 2 is concrete or is wire lath; Described cast-in-place coupling beam 3 and prefabricated coupling beam 2 are reinforced concrete coupling beams or steel reinforced concrete coupling beam; Reinforcing bar 10 in the described steel reinforced concrete coupling beam is steel plate, H shaped steel, i iron or box-type section shaped steel; Longitudinal stress reinforcing bar 6, stirrup 7, waist muscle 8 and lacing wire 9 are set in described reinforced concrete coupling beams and the steel reinforced concrete coupling beam; Longitudinal stress reinforcing bar 6 in described prefabricated coupling beam and the cast-in-place coupling beam or reinforcing bar stretches in the body of wall 1 or in the support column.

The utility model embodiment two is referring to Fig. 3, Fig. 4, Figure 10, Fig. 7 and shown in Figure 8, and the difference of present embodiment and embodiment one is to have hole 4 on the described prefabricated coupling beam.

The utility model embodiment three is referring to Fig. 5, Fig. 6, Figure 10, Fig. 7 and shown in Figure 8, and the difference of present embodiment and embodiment one is the prefabricated coupling beam of described prefabricated coupling beam for the band packed layer; Described packed layer 5 is cement mortar, plain concrete, haydite concrete or release agent coating.

The utility model embodiment four can be integral prefabricated member referring to the prefabricated coupling beam at Figure 12, described band hole, also the combination prefabricated units that can be made up of prefabricated top beam 11, prefabricated lower beam 12, prefabricated post 13.

The construction method step of above-mentioned prefabricated, cast-in-place hybrid doubly-linked beam is as follows:

Step 1: make prefabricated coupling beam 2;

Step 2: the design attitude in prefabricated coupling beam 2 props up template, puts into prefabricated coupling beam 2;

Step 3: with the upper surface of prefabricated coupling beam 2 bottom template, the front and back sides template of the cast-in-place coupling beam 3 of supporting as cast-in-place coupling beam 3;

Step 4: reinforcing bar in the cast-in-place coupling beam of colligation or fixing reinforcing bar 10;

Step 5: fluid concrete;

Step 6: the concrete to cast carries out standard curing, after concrete strength reaches designing requirement, removes the Side shuttering of cast-in-place coupling beam 3.

More than be exemplary embodiments of the present utility model, enforcement of the present utility model more than that.

Claims

1. prefabricated, cast-in-place hybrid doubly-linked beam, two ends are overlapped on body of wall (1) or the support column, it is characterized in that: coupling beam is two, one is prefabricated coupling beam (2), another root is cast-in-place coupling beam (3), wherein cast-in-place coupling beam (3) is positioned at the end face of prefabricated coupling beam (2), and the soffit of cast-in-place coupling beam (3) is close to the upper surface of prefabricated coupling beam (2).

2. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 1 is characterized in that: the cross-sectional sizes of described cast-in-place coupling beam (3) and prefabricated coupling beam (2) is identical or different.

3. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 1 is characterized in that: described prefabricated coupling beam (2) is the prefabricated coupling beam at the prefabricated coupling beam of total cross-section, band hole or the prefabricated coupling beam of band packed layer.

4. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 3 is characterized in that: the prefabricated coupling beam at described band hole is integral prefabricated member or the combination prefabricated units be made up of prefabricated top beam, prefabricated lower beam, prefabricated post.

5. according to claim 1 or 3 described prefabricated, cast-in-place hybrid doubly-linked beams, it is characterized in that: the side of described prefabricated coupling beam (2) is concrete or is wire lath.

6. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 3, it is characterized in that: described packed layer is cement mortar, plain concrete, haydite concrete or release agent coating.

7. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 5 is characterized in that: described cast-in-place coupling beam (3) and prefabricated coupling beam (2) are reinforced concrete coupling beams or steel reinforced concrete coupling beam.

8. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 7 is characterized in that: the reinforcing bar (10) in the described steel reinforced concrete coupling beam is steel plate, H shaped steel, i iron or box-type section shaped steel.

9. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 7 is characterized in that: longitudinal stress reinforcing bar (6), stirrup (7), waist muscle (8) and lacing wire (9) are set in described reinforced concrete coupling beams and the steel reinforced concrete coupling beam.

10. prefabricated, cast-in-place hybrid doubly-linked beam according to claim 9 is characterized in that: longitudinal stress reinforcing bar (6) or reinforcing bar (10) in described prefabricated coupling beam and the cast-in-place coupling beam stretch in the body of wall (1) or in the support column.