CN201158943Y

CN201158943Y - Filling core concrete structure

Info

Publication number: CN201158943Y
Application number: CNU2007200394723U
Authority: CN
Inventors: 李树林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-07
Filing date: 2007-06-07
Publication date: 2008-12-03
Anticipated expiration: 2017-06-07

Abstract

The utility model relates to a filled core concrete structure, which belongs to the civil engineering field. A lighter filled core body (1) or (2) is placed on the slightly stressed cross section core area of basic components such as bridge piers of beam, plate, column and bridge beam structures of concrete building structures, dam bodies of water dams and the like in advance, after the lighter filled core body (1) or (2) is fixed firmly, concrete is then poured, thereby, the concrete can be replaced, the volume use of the concrete can be reduced, the structure self weight is alleviated, and simultaneously the whole pouring structure is still retained. The filled core body is formed through packing reed into a cylindrical shape (1) or a prismatic shape (2) through an iron sheet surrounding hoop (3), the filler core body is distributed in components which need pouring section by section and is tied on a vertical reinforced bar (4) and a limit reinforced bar (5) through an iron wire, the vertical reinforced bar (4) and the limit reinforced bar (5) are then connected and fixed with a structure stressed reinforced bar or a template, and after the concrete is poured, a regular cavity structure is formed in the component.

Description

A kind of filled core concrete structure

Affiliated technical field

The utility model " a kind of filled core concrete structure " relates to beam, plate, post in the building, and the bridge pier in the bridge, the concrete structures such as dam body of dam replace the structure of real core concrete with the filled core structure; Field of civil engineering.

Background technology

(1) solves the technical method that concrete structure is taked from great problem at present

In concrete structure, the precast prestressed concrete porous plate once was widely used in the floor slab structure of building construction, it is will to work less part in the concrete slab cross section in prefabricated manufacturing process when professional plant produced, take out the hole by steel pipe and form hole, be issued to the weight that alleviates concrete slab in the condition that satisfies force request, overcome that concrete structure exists from great shortcoming.But because there is defective in prefabricated porous plate aspect the structural entity shock resistance, China is except that the private residence use is built in some areas, rural area, and city and other area all do not re-use.

In order to alleviate the concrete structure deadweight, in bridge construction, adopt the inflation of rubber air capsule to form cavity, cross section shape, produce prefabricated box beam, after the air bag venting, the capsule bag does not seal the hole and takes out from two of case beam.This method only is fit to the production of prefabricated units, and the cast-in-place structural member can't be reserved suitable hole, and promptly air bag can't take out, and the capsule bag is as once coming into operation, and is unreasonable economically and can't adopt.

In order to alleviate the building floor structure, people develop the totally-enclosed light-wall pipe of GBF again and are embedded in the concrete in recent years, constitute the hollow arch without beam of integral cast-in-situ, but its cost are higher, are difficult to popularize for the moment.

With the 200mm thick concrete slab, adopt 6 of the GBF light-wall pipes of φ 120,8 yuan of every cost of materials, every construction cost per square meter cost of materials increases about 50 yuan.

(2) reed is as the history and the performance of constructional materials

In China, reed is ignored by people as a kind of cheap and good-quality constructional materials.Reed itself has certain rigidity, and reed is weaved into reed fragrant plant sheet, can be used as the partition wall of space enclosing structure, also can be used as shingle, saves rafter and directly is shelved on the purlin, and upper cover cogongrass or add rafter loam cake plain tile constitutes roof structure; Reed matting is plastered and can constitute ceiling structure.

Reed also has certain tensile strength, and the reed thin bamboo strip is weaved into nest folding (general 350～400mm is wide, is similar to reed mat), can become the storage bulk grain tank by corral.

Reed also has an important feature, be exactly that corrosion resistant is mashed, recent two decades comes, along with expanding economy, the rural area people that build a house generally use high-quality constructional materialss such as brick, wood, reinforcing bar, cement, and reed has been given it up, wild reed is no longer gathered in a large amount of rivers,lakes and seas watersides, generally all set fire and destroy by fire, caused waste economically, also caused environment pollution.

Cause the reason of economic waste to be, people do not have to find the flood tide of reed to use approach.

Obviously, serve as the filling core body, be embedded in that stressed less position just can alleviate its deadweight in the concrete structure with reed.Reed bundle unit weight is 200～250kg/m only ³Reed fragrant plant sheet non-wet environment that drenches with rain in local-style dwelling houses reaches 40～50 years following application life.China's the '30s in last century once had structure circle older generation invar material to lack, and used bamboo reinforcement to replace reinforcing bar, and after five more than ten years, the situation of change of textual criticism bamboo reinforcement finds that it is carbonization state.And reed and bamboo reinforcement are similar, be embedded in also not go mouldy rottenly in the concrete of secluding air, and can only be carbonization gradually.Therefore, reed itself does not constitute corrosion to concrete structure, also imputrescibility and effusion pernicious gas, thus influence people's health.

Summary of the invention

(1) technical problem to be solved

Very big shortcoming of concrete structure is exactly from great, and this is because concrete self-capacity (2500kg/m ³) big reason.When methods such as taking aerating alleviates its unit weight, concrete intensity declines to a great extent again, therefore, should guarantee that concrete structure has required design strength, alleviate the total deadweight of structure again, structure itself also will guarantee it is complete cast-in-place overall structure simultaneously, and the cost input also will reduce as far as possible in addition, and this is a problem to be solved in the utility model.

(2) technical scheme

A kind of filled core concrete structure is the core body (unit weight 200～250kg/m that reed is bundled into definite shape ³) place the centre of concrete structure member, with the instead of part volume of concrete, alleviate dead load.

The reed filled core itself has certain intensity, and when concreting, the watering of vibrating head smash and can not damaged the reed bundle, also can not be out of shape, and cement paste can seepage not advance in the core body.Reed is bundled into cylinder or prism and handling reinforcement with iron sheet is in the same place with spacing reinforcing bar binding, the reinforcing bar that should join in handling reinforcement and spacing reinforcing bar and member colligation again is in the same place, with the position of control filled core, final in concrete with regard to the cavity body structure of formation rule.

(3) beneficial effect:

A kind of filled core concrete structure, promptly the core body that is bundled into reed places the member of concrete structure, substitutes the part volume of concrete, the deadweight that has alleviated structure, its structure still is an integral cast-in-situ simultaneously.

Such structure, weight reduction 25～30%, integral cast-in-situ have guaranteed the anti-seismic performance of structure.

Aspect economic indicator, the concrete amount of minimizing, more cheap than reed with volume, for instance, 20cm slab, 1m ²Adopt long 6 Φ 120 core bodys of 1m, through measuring and calculating, the equivalent concrete is 20 yuan of RMB, and the reed filled core only is 12 yuan of RMB.

Aspect environmental protection, wild reed has had the demand of flood tide construction market, no longer sets fire and destroys by fire, the influence that traffic, atmospheric environment are no longer polluted.

Aspect resource consumption, the cement of saving, yellow ground, stone can be built more house, or construction market is reduced the demand of cement, also are the positive contributions to resource consumptions such as coal, electric power.

In addition, because the existence of filled core is arranged, sound insulation, the thermal and insulating performance of building also increase in the structural element.

Therefore, if this technology is promoted on a large scale in China, then social benefit, economic benefit are obvious.

Description of drawings

Fig. 1 is cylindrical reed filled core sectional view;

Fig. 2 is prismatic reed filled core sectional view;

Fig. 3 is filled core cast in place concrete plate cross sectional shape figure;

(1) is cylindrical reed core among the figure, and (2) are prismatic reed cores, and (3) are that iron sheet encloses hoop, and (4) are handling reinforcements, and (5) are the spacing reinforcing bars of anti-floating, and (6) are plate face reinforcing bars (or distribution bar), and (7) are reinforcing bars at the bottom of the plate, and (8) are concrete slabs.

I make to fill core body with the reed bundle and build concrete cast-in-place slab (Fig. 3), and this plate is that 8m is long, and 8m is wide, and 20cm is thick, altogether 12.8m ³, alleviate dead load 9.34T.Consume reed 4.34m ³, save 1100 yuan of fund RMB.

The specific embodiment:

Choose reed length unanimity, cut unnecessary reed catkins head part, bunch.The reed of drying is bundled into the bundle shape, and its shape and size are pressed the concrete structure member cross section, the length required size is determined, cylinder (1) is generally adopted in cast-in-place plate cross section, and other member section then adopts prism (2).When beam column wall sectional dimension was big, the assembly unit of available a plurality of rectangle core body banded together the formation prism with iron wire again.Reed two ends thickness differs, and as the braiding reed matting, can half-and-half take end to end, and place at two ends respectively, forms uniform cylinder.Be the shape of assurance filled core, reed itself is waterproof, and available thick iron sheet is done typing and enclosed hoop (3), and thickness of scale is generally got 0.4～0.6mm, width 15～20mm, and to the reed extruding closely, the not purling of assurance cement paste advances in the reed bundle to get final product; Reed has joint, and bundle body two ends can not deal with.The iron sheet joint of hoop (3) is enclosed in the periphery, can make seaming, also can hole, and is tight with the iron wire strand, encloses the hoop spacing and gets 40～60cm.River reed length is generally 2.5～3.0m, diameter 5～8mm; River reed length is 3.0～4.0m, diameter 15～20mm.Core body length requires to be cut into sectional according to member.

Cast-in-place plate (Fig. 3) filled core concrete structure: go up layout vertical handling reinforcement (4) (also making the spacing reinforcing bar of side direction) in the vertical muscle (7) of plate inner bottom part, place reed bundle filled core between per two handling reinforcements, handling reinforcement top links to each other with plate face reinforcing bar, then suitably arranges distribution bar (6) with the core body upright position during no plate face reinforcing bar; For guaranteeing that reed is bundled in plate kernel of section position, respectively place row's spacing reinforcing bar of anti-floating (5) up and down in reed bundle, for preventing core body come-up when the casting and compacting of concrete process, with wire nail and bottom wooden form stickfast, steel form then puts thin wire in advance in piece and vertical muscle is tightened with the vertical muscle of plate inner bottom part; To fasten with thin wire respectively between the vertical muscle of plate inner bottom part, handling reinforcement, spacing reinforcing bar, the reed bundle hoop.Cast-in-place beam filled core concrete structure: the first, between stirrup, locate the spacing reinforcing bar in colligation bottom (5) in advance; The second, reed is tied filled core penetrate in the reinforcing cage; The 3rd, again that spacing reinforcing bar in top (5) and stirrup colligation is firm; The 4th, at last the reed bundle is enclosed hoop and fasten with thin wire with the spacing reinforcing bar in upper and lower part.Beam section is bigger, when filled core is combined by many bundle reed bundles, then respectively arranges a spacing reinforcing bar of side direction (4) in the filled core both sides.Cast-in-place post wall filled core concrete structure: arrange the spacing reinforcing bar of side direction and the bottom of filling core body except both direction in horizontal plane and shelve the reinforcing bar, the come-up problem of core body in the time of also will controlling concreting, the construction measure of solution is: 1. core body is enclosed between the hoop and fasten with thin wire; 2. peripheral core body being enclosed hoop fastens with the spacing reinforcing bar of side direction; 3. increase the thicker spacing reinforcing bar of anti-floating of groined type in the core body top or add the spacing steel plate of weldering (note the combustibility of reed, will take during welding to water moistening reed bundle and screening are every safeguard measure).Beam column built from concrete reinforcing bar within the walls is more, and reinforcing cage is heavier, generally needn't consider to fill the come-up problem of the related reinforcing cage of core body, as checks its buoyancy above reinforcing cage weight, then also needs reinforcing cage and template support and connection is firm.The bridge pier structure of bridge construction is identical with concrete column, the dam structure and the concrete beam of dam are similar, and the dam body volume is bigger, consider the layering of obturator vertical section is shelved, shelve with anti-floating and also control, give unnecessary details no longer one by one here with handling reinforcement and spacing steel plate.During filled core body concrete structure design, can not obturator will be arranged all in the member total length, at the two ends of member as the junction of plate and beam, Liang Yuzhu, must keep at least that 50cm above (or according to design conditions) is the concrete solid, guarantee the transmission of component internal force (stress).Certain influence is built to concrete in position in the filled core member, and the concreting direction of plate is best in the mode of pushing ahead along filled core (Fig. 3) length direction; Vertical as flooring cast direction with the filled core direction, to notice that then the filled core below must be closely knit with casting and compacting of concrete, the while filled core can not be vibrated the off-design position; The cast of beam is also carried out with two kinds of directions of vertical and horizontal; Vertically cast will guarantee that the concrete of filled core below must be closely knit, and laterally cast will prevent that concrete is bigger because of lateral pressure, makes the filled core lateral displacement; The wall column cast, darker because of the cast degree of depth, filled core and stencil sidewalls space are less, should leave the mouth that vibrates at template upper edge certain altitude, and staged and layered is vibrated, and is preferably in both sides while symmetry and vibrates, and guarantees concrete closely knit.Bridge pier and dam body volume are bigger, and layering is watered and smash as far as possible, and vibrate simultaneously around accomplishing make that concrete was not only closely knit, filled core but also non-off-design position.

Claims

1. filled core concrete structure, this structure is characterized in that concrete beam slab post, bridge pier, stressed less core space position, the cross section of basic building blocks such as dam body, pre-buried lighter filled core substitutes the part volume of concrete, the core body of filled core (1) or (2) are to enclose hoop (3) with iron sheet reed is bundled into cylinder or prism, a section is arranged in the member to be poured, core body iron wire and handling reinforcement, spacing reinforcing bar binding of anti-floating or steel plate weld together, handling reinforcement, reinforcing bar in spacing reinforcing bar and the member or the template of building are fixedly connected, after concreting is solidified, the cavity body structure of formation rule in concrete component.