CN2716338Y

CN2716338Y - Protection device for filling concrete in pile foundation construction

Info

Publication number: CN2716338Y
Application number: CN 200420052905
Authority: CN
Inventors: 陈佳训; 陈建业; 王亦德
Original assignee: 陈佳训
Priority date: 2004-08-05
Filing date: 2004-08-05
Publication date: 2005-08-10
Anticipated expiration: 2014-08-05

Abstract

The utility model relates to a protection device for filling concrete in pile foundation construction, comprising a reinforced bar cage arranged on the inner of the pile hole concrete slurry. The utility model is characterized in that the outside of the reinforced bar cage is provided with a steel wire protection material net layer. When the underground has the geological condition that thicker flow plastic sludge (sand) layer exists, by using the device of the utility model, the construction method of filling pile of concrete pumping of auger boring can successfully be constructed. The utility model has the advantages that the protection device for filling concrete in pile foundation construction is economic and can reduce project duration and ensure engineering quality; the increased member-protection material metal net is easy to obtain on the building site, and processing and cost doesn't basically increase; the protection device for filling concrete in pile foundation construction has excellent cost performance and the building section is pleased to adopt; members are easy to make and can be understood easily.

Description

Pile foundation construction concrete spouting enclosure device

Technical field

The utility model belongs to Pile Foundations Design and construction technology category, relates in particular to a kind of pile foundation construction concrete spouting enclosure device.

Background technology

In Pile Foundations Design and the construction, in the pile foundation construction engineering of the soil layer of geological conditionss such as general clay and fill stratum, powder soil horizon, thin burning into sand soil layer and general non-deadweight fall loess formation, prior art preferentially adopts auger boring pumping of concrete bored cast-in-situ pile, promptly in the stake hole, pour into the concrete slurry that stirs, and insertion reinforcing cage, maintenance as usual, pile foundation construction is finished.

At the specific condition of geotechnical engineering geology, for example, underground have mud or a thicker layer of sand, and this mud or layer of sand are in that stream is moulded or during the half-flow plastic state; Or in pond backfill, coastal area, particularly carry out on one side under the situation of (building) structure construction in one side backfill, because the shortage self of banketing of upper strata backfill is fixed, there is mud (sand) layer that flows below again, new construction of structures is seated on the backfill, and the duration requires under the tight situation or the like, and construction is failure often.

The main cause of failure is that equipment is not good enough, and the reinforcing cage of prior art is to be made of main muscle+horizontal stirrup longitudinally, and the aperture of its side is often greater than the particle diameter of the coarse aggregate of perfusion concrete slurry; The stake hole poured into the concrete slurry or counter insert reinforcing cage after, the fluidised form concrete slurry that pours in the above stake of the absolute altitude hole at the bottom of the mud, because mud (sand) stressor layer that the pressure of deadweight is moulded greater than stream, the concrete stock losses occurs in mud (sand) layer of fluidised form, and absolute altitude with top the emptying aperture phenomenon appears at the bottom of the mud that flows in the stake hole; The used equipment of auger boring pumping of concrete bored cast-in-situ pile of prior art then, promptly traditional reinforcing cage is often not competent, directly influences construction quality.

The utility model content

Goal of the invention of the present utility model is to overcome above-mentioned defective, design a kind of pile foundation construction concrete spouting enclosure device, when the geological conditions of the thicker plastic flow mud of underground existence (sand) layer, use device of the present utility model, auger boring pumping of concrete filling pile construction method, but smooth construction still.

Goal of the invention of the present utility model is implemented by following technical solution:

Develop a kind of pile foundation construction concrete spouting enclosure device, comprise the reinforcing cage that is arranged in the hole concrete slurry, it is characterized in that: described reinforcing cage arranged outside steel wire is protected the material stratum reticulare.

Above-mentioned steel wire is protected the mesh aperture of material stratum reticulare, less than the particle diameter of the coarse aggregate in the concrete slurry that pours in the stake hole;

Above-mentioned steel wire is protected the material stratum reticulare height is set, greater than mud or layer of sand height in the stake hole, job site.

The utility model steel wire is protected the effect of material net, it is the coarse aggregate that pours in the restrained pile hole in the concrete slurry, mud (sand) layer is not produced pressure, prevent that coarse aggregate is lost in mud (sand) layer, and make the concrete grout in the concrete slurry flow to the outside that steel wire is protected the material net naturally, and form balancing of stresses with mud, reach the purpose that nature fills the hole, concrete stock quality to guarantee to pour in the stake hole guarantees workmanship.

The beneficial effects of the utility model are:

1. structure practicality, remarkably productive, when being particularly useful for the geological conditions of the thicker plastic flow mud of underground existence (sand) layer, use device of the present utility model, economy, reduction of erection time, guarantee workmanship;

2. the member of Zeng Jiaing---protect the material gauze wire cloth, the building site very easily obtains, and does not increase man-hour and cost substantially; Ratio of performance to price excellence, unit in charge of construction is glad to adopt;

3. structure manufacture is simple and easy, a religion will, be easy to promote, popularize.

Description of drawings

Fig. 1 is the local enlarged diagram in the utility model structure cross section;

Fig. 2 is the reinforcing cage structural representation of prior art;

Fig. 3 is " modified wire basket " of the present utility model structural formula intention;

Fig. 4 is a conventional apparatus enforcement state contrast schematic diagram at the construction field (site);

Fig. 5 is that the utility model device is implemented view at the construction field (site).

The specific embodiment

Show among the figure, the 1st, the main muscle of reinforcing cage; The 2nd, the stirrup of reinforcing cage; The 3rd, the steel wire of reinforcing cage arranged outside is protected the material stratum reticulare; The 4th, pour into the coarse aggregate in the concrete slurry in the hole; The 5th, the concrete slurry that pours in the hole; The 6th, a hole; The 7th, the nature terrace; The 8th, the plain fill layer; The 9th, mud matter farinose argillic horizon; The 10th, farinose argillic horizon; The 11st, middle roving layer; The 12nd, argillic horizon; The 13rd, " coarse aggregate " that the reinforcing cage of prior art runs off in the stake hole is deposited in the state signal in the mud matter farinose argillic horizon 9.

Make and require: after traditional reinforcing cage has been made, the height (mud or layer of sand height in greater than stake hole, job site) that needs in the reinforcing cage outside, finer wire net (being that steel wire is protected the material stratum reticulare) steel wire is set protects the mesh aperture of material stratum reticulare, less than the particle diameter of the coarse aggregate in the concrete slurry that pours in the stake hole; Steel wire is protected the material stratum reticulare can be provided with one deck.Its way is to select the gauze wire cloth of suitable mesh, and overlap joint is fixed in the reinforcing cage periphery.

The utility model using method: anti-inserting is pressed into reinforcing cage behind normal perfusion concrete slurry; like this in the stake hole in the layer depth absolute altitude scope of mud (sand) layer; just there is one deck finer wire protection stratum reticulare in the reinforcing cage outside; this layer gauze wire cloth constrains in the coarse aggregate in the fluidised form concrete slurry of cast in the catch net; do not produce pressure to mud (sand) layer; coarse aggregate just not can owing to the loss of pressure that self produces in mud (sand) layer; and the mud that the pressure of fines and concrete grout and stream are moulded (sand) stressor layer balance, reach protect material, pressurize makes the success of pile foundation perfusion concrete slurry.

On probation through the job site, even underground mud or thicker layer of sand arranged, this mud or layer of sand are in that stream is moulded or geological condition such as half-flow plastic state when bad, and construction can normally be carried out; Facts have proved that " coarse aggregate " in the construction in the concrete slurry do not run off, guaranteed construction speed and pile foundation engineering quality, reached the goal of the invention of expection satisfactorily.Society, remarkable in economical benefits.

Claims

1. a pile foundation construction concrete spouting enclosure device comprises the reinforcing cage that is arranged in the hole concrete slurry, it is characterized in that: described reinforcing cage arranged outside steel wire is protected the material stratum reticulare.

2. according to the described pile foundation construction concrete spouting of claim 1 enclosure device, it is characterized in that the mesh aperture of described steel wire guarantor material stratum reticulare, less than the particle diameter of the coarse aggregate in the concrete slurry that pours in the stake hole.

3. according to the described pile foundation construction concrete spouting of claim 1 enclosure device, it is characterized in that described steel wire guarantor material stratum reticulare is provided with height, greater than mud in the construction site drilling or layer of sand height.