CN201581398U

CN201581398U - Valve pile toe of filling pile of immersed tube

Info

Publication number: CN201581398U
Application number: CN2009202562987U
Authority: CN
Inventors: 孙俊康; 胡军
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-19
Filing date: 2009-11-19
Publication date: 2010-09-15
Anticipated expiration: 2019-11-19

Abstract

The utility model relates to a valve pile toe of a filling pile of an immersed tube, which can place the concrete and the CFG material of a reinforcing cage and is connected on the external angle of the bottom of the immersed tube by a hinge. The valve pile toe of the filling pile of the immersed tube comprises a conical steel plate with radian, wherein both sides and the tip end of the steel plate are cut into an inclined plane, the upper end of the steel plate is provided with a hinge connection mechanism, and a cone the middle of which is provided with a hollow cavity is formed after the steel plate is closed so as to reduce the sinking resistance of the pile toe. The valve pile toe of the filling pile of the immersed tube has good anti-seepage performance, exquisite structure, simple operation and convenient use, can be repeatedly used, saves the cost, lowers the manufacturing cost, shortens the construction period and enhances the work efficiency.

Description

A kind of flapper pile tip of tube-sinking cast-in-situ pile

Technical field

The utility model relates to a kind of cast-in-situ steel reinforced concrete, plain concrete, CFG material pile driving construction equipment, particularly relates to a kind of flapper pile tip of tube-sinking cast-in-situ pile.

Background technology

Circular cast-in-situ steel reinforced concrete stake is used widely in the foundation engineering field, because stake side skin friction and end resistance are the main bearing capacity of circular pile foundation, causes its demand to steel concrete excessive, needs great amount of cost.In order to reduce the demand that steel concrete, plain concrete, CFG are expected and to reduce cost, the documents of the patent No. 200710020306.3 provides a kind of X shaped steel reinforced concrete pile construction method to adopt the way of the precast reinforced concrete piles point being stayed ground, but this way has following some deficiency: 1. prefabricated X type, Y type, O type and other shape stake point, must prepare the reinforcing cage of some, concrete grade must not be lower than C30 simultaneously.Otherwise the impact force when being difficult to bear the vibration sinking tube sinking and the resistance of ground, even it can not effectively penetrate bearing stratum with regard to crushed destruction.Therefore the prefabricated sharp cost of stake is too high, needs 80～100 yuan through calculating each sharp cost.If single pile is with 10 meters long calculating, then every linear meter(lin.m.) will increase by 8～10 yuan of costs.2. precast pile tip needs to make mould, reaches certain intensity because of the demoulding need wait concrete, so need to make a large amount of moulds.Each sharp mould needs 800～1000 yuan.Strengthened construction cost.3. the precast pile tip concrete strength must reach design strength 100% and can use, and fails to meet the time limit of a project.Precast pile tip needs bigger prefabricated, stacking place.The sclerosis of prefabricated place is again a no small expense.If the stake machine changes next building site over to, the place of hardening just will be scrapped.4. secondary must take place and have bad luck (precasting yard is to the building site) expense in precast pile tip.Because of each point weighs more than 100 kilogram, minimum as just to move more than two people during construction.So not only inconvenience but also dangerous.5. prefabricated stake point.Careless slightly during construction, card pipe phenomenon will take place, to immersed tube is scrapped.The bottom surface of 6. prefabricated stake point is a plane body, and the immersed tube penetration resistance is big, and the stake machine must be opened with the vibrational state immersed tube just to be sunk.Can make soil liquefaction like this, strengthened concrete filling volume, waste material, reduced the bearing capacity of stake.The Outside Dimensions of 7. prefabricated stake point must be bigger than the Outside Dimensions of immersed tube, otherwise prefabricated stake point can enter in the immersed tube chamber generation card pipe phenomenon.Strengthen concrete fullness coefficient like this, certainly will increase material usage, reduced the supporting capacity of stake simultaneously.

Summary of the invention

The purpose of this utility model provides a kind of high efficient and reliable, can have enough to meet the need the construction equipment of use.Flapper pile tip of the present utility model is made up of several band radian taper steel plates.Form the cone that the centre is cavity structure (circle) when steel plate is closed, the not open petal that likeness in form is made up of several petals.Be convenient to immersed tube, reduce the immersed tube penetration resistance.The inclined-plane is cut at steel plate both sides and tip, impels adjacent steel plate and stake end steel plate to be close to mutually.Avoid in the work progress, moisture in the ground and mud infiltrate in the tube chamber from stake point bottom.In order to improve the integral rigidity of stake point, allow the stake point possess certain anti-ability of inserting (when the concrete plugging takes place simultaneously, immersed tube can be carried to certain altitude, the downward again ability of inserting), add the steel plate (reinforcement floor) that weldering is complementary with it in the middle of the band radian taper steel plate outside, the upper end of steel plate links to each other with the exterior angle of the immersed tube of cavity structure with hinges.The Vibration on Start-up head is lowered into the ground projected depth with the immersed tube of cavity structure in the protection of flapper pile tip.The petal of stake point opens automatically because of immersed tube promotes when concrete perfusion, together with immersed tube with concrete perfusion with vibrating with lifting.The utility model barrier performance is good, delicate structure, simple to operate, easy to use, turnover are used, have saved cost, have reduced cost, have shortened the duration, improved work efficiency.

The utility model provides a kind of flapper pile tip of tube-sinking cast-in-situ pile, be connected through the hinge on the exterior angle of immersed tube bottom, it is characterized in that: the flapper pile tip of described tube-sinking cast-in-situ pile is made up of the taper steel plate of band radian, steel plate both sides and most advanced and sophisticated one-tenth inclined-plane, the steel plate upper end is provided with articulated link mechanism, the cone of cavity is arranged in the middle of forming after the described steel plate closure, and the immersed tube of described connection can be X type, Y type and column type.Also can require the flapper pile tip be designed to other shape according to stake shape.

As a kind of improvement of the present utility model, in the middle of the described flapper pile tip outside or both sides are welded with the muscle floor, can improve the integral rigidity of stake point like this, make the stake point have certain anti-ability of inserting.If the accidental concrete plugging phenomenon that takes place can promote certain altitude with immersed tube during construction, insert downwards once more.

The utility model has the advantages that barrier performance is good, delicate structure, simple to operate, easy to use, can have enough to meet the need use, saved cost, reduced cost, shortened the duration, improved work efficiency.

Description of drawings

Fig. 1 is the work schematic diagram of the utility model flapper pile tip

Fig. 2 is a kind of assembling schematic diagram of the utility model X flapper pile tip

Fig. 3 is the another kind assembling schematic diagram of the utility model Y flapper pile tip

Fig. 4 is the another kind assembling schematic diagram of the utility model O flapper pile tip

1, vibro driver; 2, tup; 3, immersed tube; 4, flapper pile tip;

5, articulated link mechanism; 6, reinforcement floor;

The specific embodiment

Below in conjunction with drawings and Examples utility model is described further.

The flapper pile tip 4 that the utility model provides is made up of several band radian taper steel plates, forms the cone that the centre is a cavity structure when steel plate is closed, and similar unopened petal reduces immersed tube 3 penetration resistances, is convenient to immersed tube 3 and sinks.The inclined-plane is cut at the both sides and the tip of band radian taper steel plate, is close to mutually to impel adjacent steel plate and stake end steel plate.Prevent that ground moisture content and mud from entering tube chamber.The upper end of steel plate makes it to link to each other with the exterior angle of the immersed tube 3 of cavity structure by hinges bindiny mechanism 5.

In order to improve the integral rigidity of flapper pile tip 4, and allow flapper pile tip 4 possess certain anti-ability of inserting, when the concrete plugging takes place, immersed tube 3 can be promoted to certain altitude after, in downward insertion.Both sides or centre at band radian taper steel plate add the muscle floor 6 that weldering is complementary with it.If X type immersed tube adds the muscle floor 6 that weldering is complementary with it in band radian taper steel plate both sides as shown in Figure 2, if Y type immersed tube adds the muscle floor 6 that weldering is complementary with it as shown in Figure 3 in the middle of band radian taper steel plate, if the column type immersed tube need not to add the muscle floor 6 that weldering is complementary with it as shown in Figure 4.

A kind of using method of flapper pile tip of tube-sinking cast-in-situ pile is characterized in that as shown in Figure 1, comprises the steps:

Allow vibro driver 1 in place earlier, make the vibration head bottom of vibro driver 1 be connected with tup 2, tup 2 lower ends are connected with immersed tube 3, and the flapper pile tip 4 of the tube-sinking cast-in-situ pile mechanism 5 that is connected through the hinge is connected immersed tube 3 bottoms, become the seal closure shape.Prevent that ground moisture content and mud from entering in the tube chamber.

Vibrate downwards by the vibration tup afterwards; driving immersed tube 3 and flapper pile tip 4 moves downward; make immersed tube 3 be lowered into the ground projected depth, hold the soil body to squeeze immersed tube 3 outsides stake, afterwards concrete is injected in immersed tube 3 cavitys by charging aperture in flapper pile tip 4 protections of tube-sinking cast-in-situ pile.

Vibrate by vibration head at last, immersed tube 3 is progressively at the uniform velocity upwards extracted ground, rise along with steel pipe promote to drive flapper pile tip 4,, formed cast-in-place steel concrete, plain concrete, CFG and expect because the concrete gravity effect makes the petal of flapper pile tip 4 open automatically.

Because of flapper pile tip 4 has certain anti-slotting ability, if the plugging phenomenon took place when making progress the tube drawing concrete perfusion for immersed tube 3 and flapper pile tip 4, immersed tube 3 can be promoted certain altitudes, insert downwards once more.

Claims

1. can put the concrete of reinforcing cage, the flapper pile tip of CFG material tube-sinking cast-in-situ pile for one kind, be connected through the hinge on the exterior angle of immersed tube bottom, it is characterized in that: the flapper pile tip of described tube-sinking cast-in-situ pile (4) is made up of the taper steel plate of band radian, the inclined-plane is cut at steel plate both sides and tip, the steel plate upper end is provided with articulated link mechanism (5), is the cone of cavity in the middle of forming after the described steel plate closure.

2. the flapper pile tip of a kind of tube-sinking cast-in-situ pile according to claim 1 is characterized in that: in the middle of described flapper pile tip (4) outside or both sides are welded with reinforcement floor (6).

3. a kind of concrete of reinforcing cage, flapper pile tip of CFG material tube-sinking cast-in-situ pile put according to claim 1, it is characterized in that: the immersed tube of described connection (3) can be X type, Y type and O type, also can require the flapper pile tip be designed to other shape according to stake shape.