CN103953054B - A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar - Google Patents
A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar Download PDFInfo
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- CN103953054B CN103953054B CN201410128387.9A CN201410128387A CN103953054B CN 103953054 B CN103953054 B CN 103953054B CN 201410128387 A CN201410128387 A CN 201410128387A CN 103953054 B CN103953054 B CN 103953054B
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Abstract
A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar; relate to bridge foundation construction field, at the bottom of the stake of trunk sealing concrete pile foundation, reinforcing bar is wrapped in concrete piles, and pile crown reinforcing bar exposes outside concrete piles; the top of cushion cap parcel concrete piles, the end face of cushion cap is higher than the end face of pile crown reinforcing bar.In the construction method of trunk sealing concrete pile foundation, after first reinforcing bar becomes concrete piles at the bottom of concreting stake, casing is then coordinated to build stake top concrete parcel pile crown reinforcing bar on stake top.The object of the present invention is to provide a kind of dry sealing concrete pile foundation and the construction method thereof of protecting pile crown reinforcing bar, it is simple and easy to do, and protection pile crown reinforcing bar, reduces concrete waste.
Description
Technical field
The present invention relates to bridge foundation construction field, be specifically related to a kind of dry sealing concrete pile foundation and the construction method thereof of protecting pile crown reinforcing bar.
Background technology
In the foundation construction engineering that bridge etc. is built, the pile foundation construction of drilled pile concreting is adopted to be widely used.Particularly in the area of the harder geological conditionss such as knob or formation geology area, the pile foundation construction of drilled pile concreting adopts that rotary drilling rig is dry digs method pore-forming, anhydrous in stake holes after pore-forming, then adopt dry sealing concrete to construct and carry out concreting in stake holes, in order to avoid reinforcing cage when cushion cap excavation of foundation pit by mechanical damage, normally concreting is to reinforcing cage top.There is following shortcoming in this conventional construction method: one is cause stake top to waste with the concrete of upper part, two is the engineering quantitys increasing pile crown concrete chisel removal, in a word, conventional pile base construction method causes the significant wastage of man power and material, is unfavorable for the foundation construction process of building.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of dry sealing concrete pile foundation and the construction method thereof of protecting pile crown reinforcing bar, it is simple and easy to do, and protection pile crown reinforcing bar, reduces concrete waste.
For reaching above object; the technical scheme that the present invention takes is: a kind of dry sealing concrete pile foundation protecting pile crown reinforcing bar; comprise the concrete piles of cushion cap, reinforcing cage and parcel reinforcing cage; reinforcing bar and a pile crown reinforcing bar at the bottom of described reinforcing cage comprises; at the bottom of described stake, reinforcing bar is wrapped in concrete piles; described pile crown reinforcing bar exposes outside concrete piles, the top of described cushion cap parcel concrete piles, and the end face of described cushion cap is higher than the end face of pile crown reinforcing bar.
Protect a construction method for the dry sealing concrete pile foundation of pile crown reinforcing bar, comprise the following steps:
S1: after forming stake holes, removes sediment bottom stake holes;
S2: with pile crown reinforcing bar and the sound detecting pipe at earth working material parcel assembling reinforcement cage top, transfer reinforcing cage;
S3: concreting, until reach a top mark eminence, forms concrete piles;
S4: install inverted tubaeform casing in pile crown reinforcing bar, between the hole wall of stake holes and casing, pad is fixed;
S5: build weak concrete between the hole wall and casing of stake holes, forms the stake top concrete that ring-type and mesopore are inverted round table, before concrete final set, takes out casing at the top of concrete piles;
S6: excavation cushion cap foundation ditch;
S7: stake top concrete is removed in cutting, finishing pile crown reinforcing bar, build cushion cap, pile foundation construction is complete.
On the basis of technique scheme, described earth working material be foam, geotextiles one or both.
On the basis of technique scheme, in step S4, the height height 20cm of the aspect ratio pile crown reinforcing bar of described casing, the large mouth external diameter 3 ~ 5cm less of reinforcing cage internal diameter of casing, the osculum external diameter 8 ~ 10cm less of reinforcing cage internal diameter of casing.
On the basis of technique scheme; in step S7; first remove stake top concrete adopts the cutting of double-deck ring cutting method to exceed the stake top concrete of absolute altitude at the bottom of cushion cap; the double-deck mark line of the position specifically flushed with absolute altitude at the bottom of cushion cap on concrete side, stake top and upwards 20cm place picture; with cutting machine along mark line hoop joint-cutting, cutting-in, to the place of 2cm less of stake top concrete cover thickness, cuts the stake top concrete between joint-cutting; then pneumatic pick coordinates stripping stake top concrete and pile crown reinforcing bar, finally takes remaining stake top concrete away.
Beneficial effect of the present invention is:
1, in the dry sealing concrete pile foundation of the present invention and construction method thereof, first after concrete-placing reinforcing steel bar cage becomes concrete piles, coordinate casing to build stake top concrete parcel pile crown reinforcing bar on stake top, avoid being dug the problems such as disconnected, distortion at mechanical equivalent of light excavation cushion cap foundation ditch pile head reinforcing bar by machinery, and be convenient to the arrangement of excavating rear pile crown reinforcing bar, ensure the construction quality of pile foundation.
2, in the dry sealing concrete pile foundation of the present invention and construction method thereof, in pile crown reinforcing bar on stake top, tubaeform casing is installed, then concreting between casing and stake holes hole wall, such pouring reinforcement cage is than completely solid reinforcing cage of building same height, save the concrete of casing volume size, good economical benefit, easy to operate, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the dry sealing concrete pile foundation of the present invention.
Fig. 2 is the structural representation of the construction king-pile top concrete part of the dry sealing concrete pile foundation of the present invention.
Fig. 3 is the top view of Fig. 2.
Reference numeral: concrete piles 1, stake top concrete 2, cushion cap 3, reinforcing cage 4, reinforcing bar 41 at the bottom of stake, pile crown reinforcing bar 42, stake holes 5, stake top mark is high by 6, casing 7, earth working material 8.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1; a kind of dry sealing concrete pile foundation protecting pile crown reinforcing bar; comprise the concrete piles 1 of cushion cap 3, reinforcing cage 4 and parcel reinforcing cage 4; reinforcing bar 41 and a pile crown reinforcing bar 42 at the bottom of described reinforcing cage 4 comprises; reinforcing bar 41 at the bottom of described stake is wrapped in concrete piles 1; described pile crown reinforcing bar 42 exposes outside concrete piles 1, and described cushion cap 3 wraps up the top of concrete piles 1, and the end face of described cushion cap 3 is higher than the end face of pile crown reinforcing bar 42.
As shown in Figure 1 to Figure 3, a kind of construction method protecting the dry sealing concrete pile foundation of pile crown reinforcing bar, comprises the following steps:
S1: form stake holes 5, removes sediment bottom stake holes 5.
S2: the pile crown reinforcing bar 42 and the sound detecting pipe that wrap up assembling reinforcement cage 4 top with earth working material 8 so that later stage reinforcing bar and concrete stripping, described earth working material 8 be foam, geotextiles etc. one or more, transfer reinforcing cage 4.
S3: concreting, until reach high 6 places of stake top mark in default cushion cap 3, forms concrete piles 1.
S4: install large mouth tubaeform casing 7 upward in pile crown reinforcing bar 42, at the great Kou edge of casing 7, extension suspension centre is set, inside arranges Anti-deformation support component, between stake holes 5 hole wall and steel pile casting 1, pad is fixed, high 3 ~ the 5cm of height of the aspect ratio pile crown reinforcing bar 42 of described casing 7, the large mouth external diameter 3 ~ 5cm less of reinforcing cage 4 internal diameter of casing 7, the osculum external diameter 8 ~ 10cm less of reinforcing cage 4 internal diameter of casing 7.In the present embodiment, described casing 7 is the joint steel pile casting in steel work factory process, the large mouth external diameter 5cm less of reinforcing cage 4 internal diameter of described steel pile casting, osculum external diameter 10cm less of reinforcing cage 4 internal diameter.
S5: build weak concrete between stake holes 5 hole wall and casing 7, is formed into ring-type at the top of concrete piles 1 and mesopore is the stake top concrete 2 of inverted round table, and before concrete final set, take out casing 7, this casing 7 can be reused.
S6: mechanical equivalent of light excavation cushion cap foundation ditch, so that later stage construction cushion cap 3.
S7: stake top concrete 2 is removed in cutting, finishing pile crown reinforcing bar 42, build cushion cap 3, pile foundation construction is complete.First wherein remove stake top concrete 2 adopts the cutting of double-deck ring cutting method to exceed the stake top concrete 2 of absolute altitude at the bottom of cushion cap; the double-deck mark line of the position specifically flushed with absolute altitude at the bottom of cushion cap on concrete 2 side, stake top and upwards 20cm place picture; with cutting machine along mark line hoop joint-cutting; cutting-in is to the place of 2cm less of stake top concrete 2 protective layer thickness; cut the stake top concrete 2 between joint-cutting; then pneumatic pick coordinates stripping stake top concrete 2 and pile crown reinforcing bar 42, finally uses lifting appliance to take remaining stake top concrete 2 away.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (5)
1. protect the dry sealing concrete pile foundation of pile crown reinforcing bar for one kind, comprise the concrete piles (1) of cushion cap (3), reinforcing cage (4) and parcel reinforcing cage (4), it is characterized in that: reinforcing bar (41) and a pile crown reinforcing bar (42) at the bottom of described reinforcing cage (4) comprises, reinforcing bar (41) at the bottom of described stake is wrapped in concrete piles (1), described pile crown reinforcing bar (42) exposes concrete piles (1) outward, the top of described cushion cap (3) parcel concrete piles (1), the end face of described cushion cap (3) is higher than the end face of pile crown reinforcing bar (42);
The construction method of described dry sealing concrete pile foundation is as follows:
S1: after forming stake holes (5), removes stake holes (5) bottom sediment;
S2: with pile crown reinforcing bar (42) and the sound detecting pipe at earth working material (8) parcel assembling reinforcement cage (4) top, transfer reinforcing cage (4);
S3: concreting, until reach a top mark high (6) place, forms concrete piles (1);
S4: install inverted tubaeform casing (7) in pile crown reinforcing bar (42), between the hole wall of stake holes (5) and casing (7), pad is fixed;
S5: build weak concrete between the hole wall and casing (7) of stake holes (5), form stake top concrete (2) that ring-type and mesopore are inverted round table at the top of concrete piles (1), before concrete final set, take out casing (7);
S6: excavation cushion cap foundation ditch;
S7: stake top concrete (2) is removed in cutting, finishing pile crown reinforcing bar (42), build cushion cap (3), pile foundation construction is complete.
2. the construction method based on the dry sealing concrete pile foundation of the protection pile crown reinforcing bar of claim 1.
3. the construction method of the dry sealing concrete pile foundation of protection pile crown reinforcing bar as claimed in claim 2, is characterized in that: described earth working material (8) is foam, geotextiles one or both.
4. the construction method of the dry sealing concrete pile foundation of protection pile crown reinforcing bar as claimed in claim 2; it is characterized in that: in step S4; high 3 ~ the 5cm of height of the aspect ratio pile crown reinforcing bar (42) of described casing (7); the large mouth external diameter 3 ~ 5cm less of reinforcing cage (4) internal diameter of casing (7), the osculum external diameter 8 ~ 10cm less of reinforcing cage (4) internal diameter of casing (7).
5. the construction method of the dry sealing concrete pile foundation of protection pile crown reinforcing bar as claimed in claim 2, it is characterized in that: in step S7, removing stake top concrete (2) first adopts the cutting of double-deck ring cutting method to exceed stake top concrete (2) of absolute altitude at the bottom of cushion cap, the double-deck mark line of the position specifically flushed with absolute altitude at the bottom of cushion cap on concrete (2) side, stake top and upwards 20cm place picture, with cutting machine along mark line hoop joint-cutting, cutting-in, to the place of 2cm less of stake top concrete (2) protective layer thickness, cuts stake top concrete (2) between joint-cutting; Then pneumatic pick coordinates stripping stake top concrete (2) and pile crown reinforcing bar (42); Finally take remaining stake top concrete (2) away.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410128387.9A CN103953054B (en) | 2014-04-01 | 2014-04-01 | A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar |
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| CN201410128387.9A CN103953054B (en) | 2014-04-01 | 2014-04-01 | A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar |
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| CN103953054B true CN103953054B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106884436B (en) * | 2017-01-25 | 2019-08-27 | 北京市市政六建设工程有限公司 | A kind of construction method of the waterproof connecting structure of foundation pit uplift pile and structure base slab |
| CN107059909A (en) * | 2017-06-15 | 2017-08-18 | 中铁六局集团天津铁路建设有限公司 | A kind of bridge foundation and substructure construction method |
| CN114855789A (en) * | 2022-03-25 | 2022-08-05 | 标力建设集团有限公司 | Construction method for broken pile treatment of engineering pile in soft soil area |
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| JPH11140887A (en) * | 1997-11-07 | 1999-05-25 | Katashi Sendai | Method for anchoring foundation pile to foundation and pile anchor therefor |
| CN1458345A (en) * | 2003-04-29 | 2003-11-26 | 立基工程有限公司 | Combined pile section with reinfored horizontal bending strength and rigidity and its construction method |
| CN1807766A (en) * | 2006-01-26 | 2006-07-26 | 郑鸿彰 | Pile head and bearing stand integrated construction method |
| CN101275395A (en) * | 2007-03-30 | 2008-10-01 | 郑鸿彰 | Safeguard device on manhole pile head and setting method thereof |
| CN201268845Y (en) * | 2009-03-12 | 2009-07-08 | 中铁二十一局集团有限公司 | Main reinforcement packaging structure for drill pile top portion |
| CN202073110U (en) * | 2011-05-04 | 2011-12-14 | 江苏建华管桩有限公司 | Concrete pile and bearing platform connecting structure |
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2014
- 2014-04-01 CN CN201410128387.9A patent/CN103953054B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11140887A (en) * | 1997-11-07 | 1999-05-25 | Katashi Sendai | Method for anchoring foundation pile to foundation and pile anchor therefor |
| CN1458345A (en) * | 2003-04-29 | 2003-11-26 | 立基工程有限公司 | Combined pile section with reinfored horizontal bending strength and rigidity and its construction method |
| CN1807766A (en) * | 2006-01-26 | 2006-07-26 | 郑鸿彰 | Pile head and bearing stand integrated construction method |
| CN101275395A (en) * | 2007-03-30 | 2008-10-01 | 郑鸿彰 | Safeguard device on manhole pile head and setting method thereof |
| CN201268845Y (en) * | 2009-03-12 | 2009-07-08 | 中铁二十一局集团有限公司 | Main reinforcement packaging structure for drill pile top portion |
| CN202073110U (en) * | 2011-05-04 | 2011-12-14 | 江苏建华管桩有限公司 | Concrete pile and bearing platform connecting structure |
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