CN101245598A - Combined construction technique for driven cast-in-place pile and driven pile tip and driven pipe - Google Patents
Combined construction technique for driven cast-in-place pile and driven pile tip and driven pipe Download PDFInfo
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- CN101245598A CN101245598A CNA2007100104778A CN200710010477A CN101245598A CN 101245598 A CN101245598 A CN 101245598A CN A2007100104778 A CNA2007100104778 A CN A2007100104778A CN 200710010477 A CN200710010477 A CN 200710010477A CN 101245598 A CN101245598 A CN 101245598A
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Abstract
In order to overcome the technical deficiency of an immersed tube pile and a long spiral bored pile, the invention provides a combined type immersed tube filling pile construction technique which is high in bearing capacity and the quality of the pile as well as is easy to be operated and controlled and also provides an immersed tube pile point and an immersed tube of the construction technique. The technique method is that: a long spiral drilling tool having the diameter which is smaller than that of the design pile drills into the stratum at the design pile position, when the requirement of a supporting course or design is achieved, the drill is lifted and moved out of a pile hole; the immersed tube which has the diameter that is consistent with that of the design pile and is provided with a pile point is immersed into the pile hole for operation until enter to the design depth; after that, the pipe mouth of the immersed tube which is sealed by a pile toe is opened, concrete is injected into the pile hole by a pump, and at the same time, the immersed tube is lifted until the injection is finished, finally, the forming of pile is processed. The upper part of the pile toe of the immersed tube is provided with a hanging buckle of a fastening drawing wire cable and an interface is sealed and matched with the pipe mouth at the lower end of the immersed tube. The combined type immersed tube filling pile construction technique has the technical advantages of simple control and operation of the construction, high quality of pile forming and large bearing capacity, being applicable to the foundation construction of any geological stratification and low construction cost.
Description
Technical field
What the present patent application related to is building lot pile foundation technology and equipment thereof.
Background technology
Existing pile foundation piling method mainly contains pipeline sinking pile and long auger stake, classifies by the power mode, and pipeline sinking pile comprises paddle type mill pipeline sinking pile and static pressure type pipeline sinking pile again.The advantage that tube-sinking cast-in-situ pile has the field mix easy construction, saves raw material, construction costs is low, but because existing soil compaction effect in the immersed tube injection construction, be prone to technical problems such as squeezing stake, broken pile, undergauge, in addition, precast pile tip is when the immersed tube pile, and the stake point finally will stay in pile body promptly so-called " one one point ", not only increased construction cost, and broken point often occurred or gulp down point.Another kind of cast iron stake point is connected in immersed tube body lower end with shutter-type or many lobes mode, and this class stake point structure generally is applicable to argillic horizon or the low friction type pile driving construction of groundwater table; At bad ground construction, limited by hammering energy and caliber, be difficult to bear big high building project of load and the high pile foundation construction of bearing capacity; Except that the technical problem that has precast pile tip equally, its scope of application is also narrow.Take a broad view of existing tube-sinking cast-in-situ pile, its job practices is that hutching feeding, a car one car hang concrete placing, have many-sided technical problems such as complicated operation, labour intensity is big, work efficiency is low, pile quality is wayward, in construction as hole or the undergauge of collapsing, also must strike-on or anti-inserting handle, need could handle with secondary stake point.Therefore, people begin to generally believe that immersed tube bored pile constructing process falls behind, and more go to use long auger perfusion bore forming technology.Long auger perfusion bore forming technology generally to the Quaternary Period stratum penetration capacity stronger, the bearing capacity of single pile height.Yet the major technique deficiency that long auger perfusion bore forming technology exists is: whole hole is carried and being bored in the pumping liquid concrete process, because it is not thorough that soil is returned in the stake hole, be prone to the phenomenon of loosening the soil at the bottom of the hole, especially the phenomenon of loosening the soil on the big stratum of sand, gravel bed and water yield is even more serious, have a strong impact on pile quality, reduced bearing capacity of single pile: in addition, carry in the brill, if its core tube valve can not in time be opened, collapse in the stake bottom outlet side soil, underground water seepage flow in the stake hole, then cause undergauge, stake end loosened soil, forming does not have real stake; In addition, whether concrete by can be uninterrupted continuously in the drilling tool core pipe perfusion, also can only be listened and ridden perception and judgement by constructor's ear usually, needs the constructor that enough construction experiences are arranged.Because of the existence of multiple uncertain factor, actual pile foundation bearing capacity reduces greatly, has influenced its pile quality.
Summary of the invention
The goal of the invention of patent application of the present invention is effectively to avoid the technical deficiency of tube-sinking cast-in-situ pile and long auger stake, the immersed tube bored pile constructing process of combined type and pipeline sinking pile point and the immersed tube that provide a kind of bearing capacity height, quality of pile height, construction technology to be easy to operate and control.The immersed tube bored pile constructing process technical scheme of combined type disclosed by the invention, its major technique content is: the immersed tube bored pile constructing process of a kind of combined type, designing the stake position to earth-boring by diameter less than design stake long screw auger tool directly, after reaching the bearing stratum or the designing requirement degree of depth, carry brill, shift out a hole; By consistent with design stake footpath and be provided with the sharp immersed tube of stake and sink to a hole operation, injection is to projected depth again; Thereafter open the immersed tube mouth of pipe of stake point sealing, pump-injecting concrete in the stake hole promotes immersed tube simultaneously, finishes until perfusion, and pile is handled.
Realize a kind of pipeline sinking pile point of the immersed tube bored pile constructing process of above-mentioned combined type, which is provided with and immersed tube lower end mouth of pipe sealing interface matched that the sharp top of stake is provided with buckling of fastening tractive wire rope.
Realize a kind of immersed tube of the immersed tube bored pile constructing process of above-mentioned combined type, its underpart mouth of pipe cooperates with the sharp interface sealing of stake, and the sharp top of stake is provided with buckling of fastening tractive wire rope, is provided with the guiding mechanism that guiding is slidingly matched between sharp top of stake and the immersed tube.
The immersed tube bored pile constructing process technical scheme of the combined type that patent application of the present invention provides, be a kind of novel bore forming technology between soil compaction stake and non-soil compaction stake, it formed a preboring stake hole by the long screw auger tool in the stake position before the injection immersed tube, open up passage for the injection immersed tube, reduced the immersed tube penetration resistance greatly, reduce immersed tube injection power, shortened the immersed tube injection cycle; Present technique has also effectively overcome the soil compaction effect that single pipeline sinking pile occurred, technical problems such as broken pile, undergauge have been avoided, and solved so that hammer hidden pipe is existing and be difficult to penetrate technical problems such as hard closely knit interlayer and tube drawing difficulty, can also strengthen bearing stratum depth control according to requirement of engineering, so the technical program is more suitable for the big high building project foundation construction of load; The technical program has solved also that the stake hole caves in and the stake end loosened soil problem of long auger stake.Because the pipeline sinking pile point that patent application of the present invention provides can be extracted with promoting immersed tube, and use repeatedly, both realized anhydrous in the pipe in the injection, guarantee the continuity of pouring into into pile material also to have changed the conventional practice of " one one point " at present, effectively avoided broken point or gulped down phenomenon such as point.In sum, the present patent application technology have construction control and easy and simple to handle, pile quality is high, bearing capacity is big, be applicable to the low technological merit of foundation basic construction, construction cost of any geological stratification.
Description of drawings
Fig. 1 and Fig. 2 are respectively the two concrete structure charts of implementing of pipeline sinking pile point of the present invention
Fig. 3 is stake point and immersed tube assembled construction schematic diagram
Fig. 4 and Fig. 5 are respectively the pipeline sinking pile points and the state diagram of immersed tube two positions in the pump-injecting concrete process
Fig. 6 and Fig. 7 are respectively two parts of concrete structure figure in addition of pipeline sinking pile point of the present invention.
The specific embodiment
The immersed tube bored pile constructing process of the combined type of the present patent application, its processing step is: the 1st step: by diameter less than the long screw auger tool in design stake footpath in design stake position to earth-boring, reach the bearing stratum or the designing requirement degree of depth after, carry brill, shift out a hole; For fear of the hole phenomenon of collapsing that some special soil layer occurred, before carrying brill, inject a certain amount of cement paste by long screw auger tool core pipe, consolidation pile end soil is carried brill thereafter, and it is shifted out a hole.The 2nd step: by consistent with design stake footpath and be provided with the sharp immersed tube of stake and sink to a hole operation, injection is to projected depth; Thereafter, pour into the pile concrete when promoting immersed tube in the stake hole, finish until perfusion, shift out immersed tube, put into reinforcing cage, pile is handled.
For ease of finishing above-mentioned construction technology, the present invention also provides a kind of pipeline sinking pile point, its basic structure as shown in Figure 1, the lower end shoe 10 that is closed in immersed tube 1 is provided with a point 2, this point 2 is preferably metal matter entity, stake point 2 cooperates with immersed tube 1 lower end shoe mouth sealing and is provided with closed interface 20, and what sharp 2 top was provided with the fastening tractive wire rope of tractive to immersed tube 1 that make progress buckles 21.When stake point 2 promotes with immersed tube 1, pump-injecting concrete also pours into to the stake hole at the unlatching immersed tube mouth of pipe that is constantly left immersed tube shoe 10 by stake point 2, at this, for reducing a resistance of sharp 2 pairs of pump-injecting concretes to greatest extent, as Fig. 2, Fig. 6 and shown in Figure 7, the conical surface is connected to interface 20 and is provided with bullet 22 at an upper portion thereof, has constituted bicone stake point.Under the guiding of stake point 2 upper taper bodies 22, its pile concrete can be continuously, entered in the hole for 10 mouthfuls by the immersed tube shoe smoothly.Above-described example structure is to be suitable for forming the structure formation that expands stake stake point, and promptly immersed tube lower end shoe assembles with the sealing of stake point, and present technique can make the stake end expand better quality.Certainly this pipeline sinking pile point also can be directly and the immersed tube lower nozzle directly seal assembling.
For guaranteeing that stake point 2 moves up and down along the immersed tube axis reliably, Fig. 2, Fig. 6 have provided different guiding mechanisms respectively with Fig. 7.As shown in Figure 2, sharp 2 tops of stake, be positioned at sharp 2 midline positions of stake and be fixed with a lead 23, immersed tube 1 inwall is supported by radial strut 11 and is provided with the guide pipe 12 that is slidingly matched with lead 23 guiding, and wire rope buckles 21 upper ends that are arranged at lead 23.As sharp 2 guiding mechanisms of stake of Fig. 6, the top of stake point 2 is provided with a guide frame 3, and this vertical frame of guide frame 3 sides and immersed tube 1 inwall guiding are slidingly matched.The sharp guiding mechanism of stake as shown in Figure 7, the stake sharp 2 tops be positioned at midline position be provided with a guide link 3 ', vertically pass its axis in the immersed tube 1 and fix a guide strip 4, the guide link 3 of stake point 2 ' be provided with along the 4 guiding slips of immersed tube guide strip, implement in the structure at this, move the enough shifting balances of operating maintenance for making, the top edge of its immersed tube guide strip 4 is the V font.
Before the injection immersed tube, make the stake sharp 2 and the immersed tube 1 lower end mouth of pipe well be connected to seal and cooperate, when sinking to immersed tube 1, stake point 2 and immersed tube injection always as a whole arrive the bearing stratum of design, so present technique has solved the technical problem of intaking in the pipe, as shown in Figure 4; Loosen the tractive wire rope certain-length of stake point 2 thereafter, and stir immersed tube 1, under self gravitation, perfusion concrete gravity and friction multiple action, stake point 2 transfixion when immersed tube begins to promote, thus the immersed tube lower end mouth of pipe opened, and pump-injecting concrete is through the immersed tube tube chamber, injected in the stake hole by the lower end mouth of pipe of having opened, affect stretching wire rope after promoting the immersed tube certain distance simultaneously, under the tractive of wire rope, stake point 2 promotes synchronously with immersed tube 1 beginning, until the perfusion pile.Stake point 2 can be taken ground out of with the lifting of immersed tube 1, thus the stake point of this immersed tube can be continuously repeatedly many positions constructions use.
Claims (9)
1. immersed tube bored pile constructing process of combined type is characterized in that by diameter less than the long screw auger tool in design stake footpath in design stake position to earth-boring, reach the bearing stratum or the designing requirement degree of depth after, carry brill, shift out a hole; By consistent with design stake footpath and be provided with the sharp immersed tube of stake and sink to a hole operation, injection is to projected depth again; Thereafter open the immersed tube mouth of pipe of stake point sealing, pump-injecting concrete in the stake hole promotes immersed tube simultaneously, finishes until perfusion, and pile is handled.
2. the immersed tube bored pile constructing process of combined type according to claim 1 is characterized in that before the long screw auger tool is carried brill, injects a certain amount of cement paste by long screw auger tool core pipe, and consolidation pile end soil is carried brill thereafter, shifts out a hole.
3. implement the pipeline sinking pile point of the immersed tube bored pile constructing process of claim 1 combined type, it is characterized in that this pipeline sinking pile point (2) is provided with and immersed tube lower end mouth of pipe sealing interface matched (20), the sharp top of stake is provided with buckle (21) of fastening tractive wire rope.
4. pipeline sinking pile point according to claim 3 is characterized in that the conical surface is connected to interface (20) and is provided with bullet (22) on stake point top, has constituted bicone stake point.
5. implement the immersed tube of the immersed tube bored pile constructing process of claim 1 combined type, it is characterized in that immersed tube (1) lower nozzle cooperates with the sharp interface of stake (20) sealing, stake point (2) top is provided with buckle (21) of fastening tractive wire rope, is provided with the guiding mechanism that guiding is slidingly matched between sharp top of stake and the immersed tube.
6. immersed tube according to claim 5, it is characterized in that sharp (2) top, be positioned at the stake a sharp midline position be fixed with a lead (23), immersed tube (1) inwall is supported by radial strut (11) and is provided with the guide pipe (12) that is slidingly matched with lead (23) guiding, and wire rope buckles the upper end that (21) are arranged at lead (23).
7. immersed tube according to claim 5 is characterized in that the top of stake point (2) is provided with a guide frame (3), and vertical frame of this guide frame (3) side and immersed tube (1) inwall guiding are slidingly matched.
8. immersed tube according to claim 5, it is characterized in that sharp (2) top is positioned at midline position and is provided with a guide link (3 '), vertically pass its axis in the immersed tube (1) and fix a guide strip (4), the guide link (3 ') of stake point (2) slides along immersed tube guide strip (4) guiding and is provided with.
9. immersed tube according to claim 8, the top edge that it is characterized in that its immersed tube guide strip (4) is the V font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104778A CN101245598A (en) | 2007-02-16 | 2007-02-16 | Combined construction technique for driven cast-in-place pile and driven pile tip and driven pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104778A CN101245598A (en) | 2007-02-16 | 2007-02-16 | Combined construction technique for driven cast-in-place pile and driven pile tip and driven pipe |
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| CN101245598A true CN101245598A (en) | 2008-08-20 |
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| CNA2007100104778A Pending CN101245598A (en) | 2007-02-16 | 2007-02-16 | Combined construction technique for driven cast-in-place pile and driven pile tip and driven pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383422A (en) * | 2011-08-25 | 2012-03-21 | 上海建工集团股份有限公司 | Compacted expansion mini-type mortar pile pile-forming method and pile-forming device |
| CN106013096A (en) * | 2016-07-02 | 2016-10-12 | 韩少鹏 | Construction method of building foundation |
| CN106120720A (en) * | 2016-07-02 | 2016-11-16 | 韩少鹏 | A kind of construction foundation working equipment |
| CN109457695A (en) * | 2018-11-14 | 2019-03-12 | 佛山市高明顺高木业有限公司 | A kind of cement steel-pipe pile |
| CN112376548A (en) * | 2020-09-21 | 2021-02-19 | 海洋石油工程股份有限公司 | Resistance device for steel pipe pile |
-
2007
- 2007-02-16 CN CNA2007100104778A patent/CN101245598A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383422A (en) * | 2011-08-25 | 2012-03-21 | 上海建工集团股份有限公司 | Compacted expansion mini-type mortar pile pile-forming method and pile-forming device |
| CN106013096A (en) * | 2016-07-02 | 2016-10-12 | 韩少鹏 | Construction method of building foundation |
| CN106120720A (en) * | 2016-07-02 | 2016-11-16 | 韩少鹏 | A kind of construction foundation working equipment |
| CN106120720B (en) * | 2016-07-02 | 2018-02-13 | 南通大学 | A kind of construction foundation working equipment and construction method |
| CN109457695A (en) * | 2018-11-14 | 2019-03-12 | 佛山市高明顺高木业有限公司 | A kind of cement steel-pipe pile |
| WO2020098041A1 (en) * | 2018-11-14 | 2020-05-22 | 佛山市高明顺高木业有限公司 | Cement steel pipe pile |
| CN112376548A (en) * | 2020-09-21 | 2021-02-19 | 海洋石油工程股份有限公司 | Resistance device for steel pipe pile |
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Open date: 20080820 |