CN102720304A

CN102720304A - Reinforced concrete composite beam

Info

Publication number: CN102720304A
Application number: CN2012101992768A
Authority: CN
Inventors: 周绪红; 吴方伯; 杨璐; 邓利斌; 袁海梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-10-10

Abstract

The invention discloses a reinforced concrete composite beam used for construction. The reinforced concrete composite beam used for construction comprises a precast beam unit, a precast slab and a rear concrete layer, wherein the end part of the precast beam unit is an inclined surface; the precast beam unit is shelved on a column, then the precast slab is placed, finally the concrete layer is formed after pouring, and the whole reinforced concrete composite beam is formed; and the forms of the inclined surface of the precast beam unit include a stepped shape, a zigzag shape, a flat surface shape and an arc shape; the inclined surface is provided with built-in fittings which are arranged in a horizontal, vertical, intersecting or slanting manner, aiming at improving the cohesive force of the precast beam unit and the column as well as the precast slab, increasing the strength of a node, and enhancing the whole superposition capability of a structure. The composite beam does not need a large-scale formwork in construction, the working procedure is simple, the working capacity is small; the precast beam unit can not only coincide with the precast slab, but also coincide with the cast-in-place concrete slab so as to form the composite beam, the composite beam can better resist external load when used in construction, the bearing capacity is greatly enhanced, and the earthquake resistant property is favorable.

Description

A kind of reinforced concrete sandwich beam

Technical field:

The present invention relates to the realm of building construction, specifically refer to a kind of reinforced concrete sandwich beam.

Technical background:

At present, the beam major part that is used in the building is that integral cast-in-situ forms, this cast-in-place beam, and the scene needs assembling reinforcement, formwork etc. on a large scale, it is loaded down with trivial details to construct, complex procedures, the amount of labour is big, and it is time-consuming to require great effort.And existingly be used for superimposed precast member for reinforcing bar concrete (patent No.: 200420068967.5) be grooved, its sidewall is a longitudinal rib, and base plate is thin, and the base plate of this prefabricated units is thin; The bean column node place is relatively weaker, and corresponding bearing capacity is also low, damages easily when transportation, lifting; And superposed beam can not be made hollow, from great; In addition, precast beam unit can not be superimposed with precast plate, can only with the superimposed reinforced concrete sandwich beam that becomes of cast in place concrete plate.

Summary of the invention:

The object of the present invention is to provide a kind of reinforced concrete sandwich beam, this reinforced concrete sandwich beam bean column node place intensity is high, and not fragile when transportation, lifting, construction is easy, operation is simple, and the amount of labour is little, and is time saving and energy saving.Precast beam unit not only can combine with precast plate and be used for the superposed beam system, and can also be combined into superimposed system with cast in place concrete plate, and hollow precast beam unit can also alleviate dead load.

For achieving the above object, the present invention seeks to realize like this, this building reinforced concrete superposed beam comprises precast beam unit, precast plate, back pouring concrete is embedded with longitudinal stress reinforcing bar and stirrup in the precast beam, and the end of said beam is the inclined-plane.

Because the inclined-plane of stairstepping, zigzag, planar shaped (the plane polishing makes it coarse), circular arc is arranged in described precast beam unit end; To improve the adhesion stress of precast beam unit and post, precast plate, increase the intensity at node place, and layout or level or vertical or interlock anyhow or oblique built-in fitting on the inclined-plane; Purpose is to increase superposed beam and concrete pin power; Improve the intensity at node place biglyyer, strengthen the whole superimposed ability of structure, make building solid and reliable.During construction, earlier precast beam unit is shelved on the post, places precast plate then, last concreting forms whole reinforced concrete sandwich beam.The effect that the building that forms with this form of construction work can be resisted external load better, bearing capacity strengthens greatly, and anti-seismic performance is good.

Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as limitation of the present invention.

Description of drawings:

Fig. 1 is the precast beam unit structural representation;

Fig. 2 is another embodiment of precast beam unit;

Fig. 3 connects component ends plug sketch map for hollow preform.

Fig. 4 is another embodiment of precast beam unit;

Fig. 5 is another embodiment of precast beam unit;

Fig. 6 is another embodiment of precast beam unit;

Fig. 7 is another stirrup form of precast beam unit embodiment;

Fig. 8 is a precast beam unit end form sketch map;

Fig. 9 is another embodiment of precast beam unit end form;

Figure 10 is another embodiment of precast beam unit end form;

Figure 11 is another embodiment of precast beam unit end form;

Figure 12 is a precast beam unit end built-in fitting arrangement sketch map;

Figure 13 is precast beam unit end another embodiment of built-in fitting arrangement;

Figure 14 is post, precast beam unit, precast plate entire arrangement structural representation;

Figure 15 arranges sketch map for the precast beam unit end template;

Figure 16 is post, precast beam unit, precast plate arrangement sketch map;

Figure 17 is post, precast beam unit, another embodiment of precast plate layout;

Figure 18 is post, precast beam unit, precast plate iterative structure sketch map;

The specific embodiment:

With reference to figure 1-Fig. 7, the precast beam unit 1 of this building reinforced concrete superposed beam, its section form can be rectangle or U-shaped or dual U-shaped; When section form was U-shaped, the beam correspondence had U-lag mouth 6, in the back during pouring concrete; Concrete can be full of the shared space of groove, strengthens the globality of structure.When the width of beam is big, can be prefabricated into the form of dual U-shaped.For alleviating the deadweight of precast beam unit 1, can vertically punch along precast beam unit 1, form the form of beam body hollow; The section form in hole is rectangle, circle, ellipse, the end in vertical hole, the i.e. end of precast beam unit 1; Be provided with plug 15; With reference to figure 3, when preventing concreting, concrete gets in the hole.Plug 15 is prefabricated units, and its section form adapts with the section form and the size of size with the vertical hole of precast beam unit.The end of beam is reserved with clamping hole hole 4, in the back during pouring concrete, makes things convenient for being connected of template 13 and precast beam unit 1, so that concreting 5 makes precast beam unit 1, precast plate 7, and integral body of pillar 11 formation.Stirrup 9 in the precast beam unit 1 can stretch out outside the precast beam unit, also can be embedded in the precast beam unit, and the form of stirrup 9 can be a rectangle, also can be the U-shaped of end band crotch.And at the elongated reinforcing bar 12 of the two ends of stirrup colligation, one side is stirrup fixedly, can strengthen precast beam unit and concrete adhesion stress on the other hand.

With reference to figure 8-Figure 11, the form of precast beam unit 1 end chamfer is stairstepping, zigzag, planar shaped, circular arc.When being planar shaped, need polishing to make the plane coarse on the tapered plane, like Fig. 4, to strengthen end and concrete snap-in force.

With reference to Figure 12-Figure 13, can arrange built-in fitting 2 on precast beam unit 1 end chamfer, built-in fitting 2 can horizontal arrangement or is vertically arranged or interlaced arrangement or oblique layout anyhow that purpose is to increase precast beam unit 1 and concrete adhesion stress.The longitudinal stress reinforcing bar 3 of being joined in the precast beam unit 1 also can stretch out beam-ends, can increase precast beam unit 1 and concrete pin power equally like this, and the intensity at node place when improving precast beam unit 1 and building with post 11 increases the globality of structure.

With reference to Figure 14, when superimposed, precast beam unit 1 is shelved on the post 11, and precast plate 7 is shelved on the precast beam unit 1.Stressed vertical muscle 10 in the precast plate also can stretch out the plate end, if precast plate is a base plate with ribbing, also can so all play the effect that increases precast beam unit and concrete binding power at the interspersed distribution reinforcement 8 of intercostal.

With reference to Figure 15, before the superimposed concreting, template 13 need be arranged in the precast beam unit end, and template 13 couples together through connector 14 with beam-ends reserving hole 4.

With reference to Figure 16-Figure 18, when the stirrup in the precast beam unit 9 stretches out outside the beam, when superimposed, precast plate 7 is close to stirrup 9 and is shelved on the precast beam unit, again along the elongated reinforcing bar 12 of the end banding of stirrup 9, and last pouring concrete layer 5.Because stirrup 9 stretches out outside the beam, the adhesion stress of concrete and precast beam unit further strengthens when superimposed, can obtain higher bearing capacity, and overall performance is better.

During construction, earlier precast beam unit 1 is shelved on the post 11, places precast plate 7 then; Last concreting layer 5; Form whole reinforced concrete sandwich beam, the intensity at this superposed beam node place is very high, the effect that the building that forms with this form of construction work can be resisted external load better; Bearing capacity strengthens greatly, and anti-seismic performance is good.

Claims

1. reinforced concrete sandwich beam; Comprise precast beam unit (1), precast plate (7), back pouring concrete layer (5); Be embedded with longitudinal stress reinforcing bar (3), stirrup (9) in the precast beam (1), it is characterized in that: the end of precast beam unit (1) is the inclined-plane.

2. reinforced concrete sandwich beam according to claim 1 is characterized in that: the form of precast beam unit (1) end chamfer is stairstepping, zigzag, planar shaped, circular arc.

3. reinforced concrete sandwich beam according to claim 2 is characterized in that: on precast beam unit (1) end chamfer built-in fitting (2) is arranged.

4. reinforced concrete sandwich beam according to claim 3 is characterized in that: built-in fitting (2) horizontal arrangement on precast beam unit (1) end chamfer, or vertical layout the, or interlaced arrangement anyhow, or oblique layout.

5. reinforced concrete sandwich beam according to claim 1 is characterized in that: precast beam unit (1) both sides, end are reserved with clamping hole hole (4).

6. reinforced concrete sandwich beam according to claim 1 is characterized in that: the cross section of precast beam unit (1) is a rectangle, or U-shaped, or dual U-shaped, or a part is rectangle, and another part is a U-shaped.

7. reinforced concrete sandwich beam according to claim 1 is characterized in that: precast beam (1) beam body is provided with hollow parts, and end plug (15) is established in the hollow parts termination.