CN1807766A - Pile head and bearing stand integrated construction method - Google Patents
Pile head and bearing stand integrated construction method Download PDFInfo
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- CN1807766A CN1807766A CN 200610033424 CN200610033424A CN1807766A CN 1807766 A CN1807766 A CN 1807766A CN 200610033424 CN200610033424 CN 200610033424 CN 200610033424 A CN200610033424 A CN 200610033424A CN 1807766 A CN1807766 A CN 1807766A
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Abstract
The invention relates to a integrated construct the post support platform with the hollow post of manual dig post, which comprises: (1) setting the shape of head of manual dig post according to the section size of post or earth beam to be realized in the construction; (2) constructing the basic earth beam and the bottom underlay normally and removing the abundant part of post protective wall at the connection part of manual dig hole and post to meet the section sizes of post, earth beam and the bottom plate, while the left protective wall of post head is used as the support earth mould; (3) connecting the post steel bar and the post head steel bar to attain preset length of anchorage; (4) filling concrete. The invention uses simple and quantized design to replace the traditional method that using single post and removing the protective wall of post as support platform; and it combines the protective wall and the support platform to save material and protect environment.
Description
Technical field
Fa Benming relates to the job practices that the empty pile crown that utilizes hand excavated pile in a kind of construction work solves the post cushion cap.
Background technology
Measure the influence that unwrapping wire is subjected to many factors in the engineering construction, the deviation of stake position is relatively large.In order to prevent and adjust the negative effect of this deviation, pass through the power transmission of cushion cap balance columns and stake etc. in the design and guarantee construction safety.
And stake is diversified.Such as preformed pile:, tend to make up with two or many piles because bearing capacity of single pile is not enough; Realize and often have only on the balancing pile modular design, make the bearing capacity of post have a reception to disperse the platform that passes down again with pile cap.Dash for another example, drilled pile, wet trade.Mud is full of in stake behind the pile, if neither one cushion cap and a cap mold also bigger than stake depended the mud dug up above the pile crown alone not enough far away, also the operating space that chisels out the pile crown concrete will be arranged.Realize these, an operating space also bigger than its pile body must be arranged, this also wants a cap mold and cushion cap to realize from constructing.
To sum up reaching various factors, is to be post (or shear wall) on cushion cap, the cushion cap in the stake.This set forms for a long time, and everybody operates by this pattern basically.Do the unmanned query of cap mold and whether can create with the retaining wall of the empty pile crown of manhole stake.
Now, the engineering scale of construction is increasing, and schedule requirement is more and more faster, and energy-conservation consciousness is more and more stronger.Under quality, safe secure prerequisite, pursuit " saving ", " fast ", " efficiently ", " environmental protection " have become the main flow of today.The design and the construction that rationalize, simplify, quantize come into fashion.Thereby also carried as the improvement project that whether retaining wall of manhole pile head can utilize when the single pile single-column and cushion cap unites two into one.
Summary of the invention
Purpose of the present invention is exactly to be rapid construction in the cooperation foundation ditch, and a kind of pile head and bearing stand integrated construction method that provides.
A kind of pile head and bearing stand integrated construction method of the present invention, comprise following construction sequence: (1) determines the shape of manhole pile head according to the design section size of post in the foundation structure or grade beam and location, and when the stake of construction manhole required pile crown is partly constructed and become above-mentioned shape; (2) basic grade beam, base plate bed course normal construction are being destroyed the design sectional dimension that the pile wall redundance makes it to satisfy post, grade beam, base plate with manhole stake binding site, and remaining empty pile crown retaining wall partly is the cushion cap topotype; (3) the post reinforcing bar is connected by design with the pile crown reinforcing bar, reaches the anchorage length of design or regulation and stipulation; (4) pour concrete, the label of cushion cap part concrete are high by design alternative in stake and post or grade beam.
The present invention directly is connected the main muscle of structural column or grade beam by design when the cross section of structural column or grade beam need not enlarge the stake footpath less than the manhole stake and when not eccentric with respect to the stake axial line with a main muscle.
The present invention directly is connected the main muscle of structural column or grade beam by design when the cross section of structural column or grade beam enlarges the stake footpath greater than the manhole stake and when not eccentric with respect to the stake axial line on demand in the stake top bit with a main muscle.
The present invention enters the main muscle bending of stake in structural column or the grade beam by design to be connected with its main muscle when the cross section of structural column or grade beam need not enlarge the stake footpath less than the manhole stake and when eccentric with respect to the stake axial line then.
The present invention enlarges the stake footpath so that post is supported in the stake on demand in the stake top bit when structural column vertically deflects away from a core position, by design the main muscle bending of stake is entered in structural column or the grade beam then to be connected with its main muscle.
The present invention compared with prior art, destroy the waste way that pile wall is done cushion cap when changing traditional manhole stake single pile single-column by the design of simplifying, quantize, utilize, regulate the empty retaining wall of stake, make it to unite two into one with cushion cap, the cushion cap way is more saved and environmental protection, make this link of foundation construction cushion cap quicker and simple simultaneously.
Description of drawings
Fig. 1 is the schematic top plan view of the situation that stake core size of the present invention is big, column dimension is little.
Fig. 2 is the schematic side view of the situation that stake core size of the present invention is big, column dimension is little.
Fig. 3 is the schematic top plan view of the situation that stake core size of the present invention is little, column dimension is bigger.
Fig. 4 is the schematic side view of the situation that stake core size of the present invention is little, column dimension is bigger.
Fig. 5 is the schematic side view of the situation that stake core size of the present invention is little, column dimension is bigger.
Fig. 6 is that stake core size of the present invention is big, column dimension is little and departs from a schematic top plan view of the situation of heart position.
Fig. 7 is that the schematic top plan view that the top stake directly is complementary need be adjusted, be strengthened in stake core position below post of the present invention deflected away from.
Fig. 8 is stake core position below post of the present invention deflects away from, and adjusts, strengthens the schematic side view that the top stake directly is complementary.
Among the figure: 1-(pre-construction) post, 2-ground beam form, 3-(hand excavated pile) retaining wall, 4-(hand excavated pile) stake core, 5-grade beam or bottom board concrete bed course, the outer soil body of 6-stake, the main muscle of 7-(manually digging hole) stake, 8-(pre-construction) bottom board concrete, 9-pile center line, 10-post center line
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, post is 1 little, when stake core 4 is big, and axle center (pile center's line 9, post center line 10 overlap) is stressed, and the present invention is achieved through the following technical solutions: post master muscle directly inserts in the pile crown hollow.Whether the post muscle joins with the main muscle 7 of stake, how to connect by the stressed needs of design consideration to determine.If grade beam is arranged, can pass a core, by post, stake core cramping up and down.
As Fig. 3, Fig. 4 and shown in Figure 5, relative hour of, stake core big when post, uniaxial force before pile driving construction, is determined the pile AnchorPoint, strengthens pile wall 3 diameters of pile intersection, satisfies the cross section requirement of post.By power transmission form between design adjustment main muscle of stake and post muscle and relation etc., resolve stake, post power transmission problem.
As shown in Figure 6,, stake core little when post be when big, and stake core eccentric force is adjusted mode of transfer force between main muscle of stake and post muscle and relation etc. by design, resolves a core eccentric force problem.
As shown in Figure 7 and Figure 8, outside post has gone out a core diameter partially or post big, before pile driving construction, determine stake, axis of a cylinder heart line (as Fig. 7).Guaranteeing under stake, the axis of a cylinder heart line prerequisite, making in the superincumbent big retaining wall projection of retaining wall below the hollow.
When the construction of bottom board concrete 8, cushion cap concrete,, guarantee workmanship if post, grade beam, base plate concrete label difference in the cushion cap scope will select its high-grade concrete to build.
So-called manhole pile head, cushion cap are integrated, are meant under the load form of single pile single-column, can utilize, change the retaining wall of pile crown, make it to satisfy the load needs of upper post and grade beam, base plate, thus the way that pile crown and cushion cap are united two into one.
One, actuality:
China is big, the people is many but individual average resource mostly is lower than world average level.This is a thing clear-headed, that wise society must carry out for saving and environmental protection.A glass water is not refused in the sea, and we can rationally save a bit is a bit, must not waste.
If we destroy, dig and transport the retaining wall concrete and then produced new building waste.Cushion cap is generally big than pile crown, and in order to protect the cushion cap hafnium, to tend to vertically add batch ash with the tile floor mould, concrete (or mortar) bed course is beaten at the soil end.For doing cushion cap, building resources such as more topotype needs to dig haul volume, uses brick more, cement, sandstone, water.Be the rubbish of making on the one hand, be the social resources that consume more on the other hand.So it is single from environmental protection with save and to make " manhole pile head and cushion cap are integrated " then should be like this.
If we destroy, dig and transport retaining wall concrete etc. and do cushion cap, single cap mold construction time of completion ratio is exactly that empty pile crown was done cushion cap long one, two day at least, slowly then long three, four days (or longer).If the construction scale of construction is big, cushion cap is many, and construction machinery is limited, total duration of finishing cap mold is longer.This can do cap mold with manhole pile head retaining wall to the current fast and efficiently society of a pursuit is a kind of extraordinary selection.
So pile head and bearing stand is integrated is very necessary.
Two, technical.
(1) the structure form of expression
Piling under the vertical cushion cap, upper supporting pole (or shear wall); Transmit the power of grade beam or base plate on the plane.Want pile crown, cushion cap is integrated, then must guarantee earlier could be integrated under the prerequisite of function of existing cushion cap.
(2) column cap, the integrated function that can satisfy existing cushion cap of cushion cap?
1, discuss earlier between stake, cushion cap, post (or shear wall) variation may with the reply means.
1.1, stake, cushion cap, the axis of a cylinder heart be stressed.
1.1.1, the stake core big, post is little, as schematic diagram 1, Fig. 2.
This is a normal condition, generally is reasons such as post concrete label is higher.If post is square post, generally be that stake is big, post is little; Stake is a rectangle, as long as ratio is reasonable, still possible stake huge pillar is little, can utilize empty pile crown retaining wall in this situation.Can insert the pile crown vacancy under the post master muscle, post master muscle also can be with the main muscle of stake 7 overlap joints, sleeve is connected even weld (not quite promotion) etc.The stressed needs of these design considerations, easy construction wait to determine; The stirrup setting also is like this at the bottom of pile crown, the post.
1.1.2, little, the post (or shear wall) of stake core is big.
If A post (mainly being rectangle) is seldom big, before this pile driving construction (as Fig. 3, Fig. 4 and shown in Figure 5), can be in the constant situation of stake axle line the construction of the retaining wall dilated diameter of empty pile crown, satisfy becoming an intended diameter again behind the stressed needs of upper post and continue construction.Post (as Fig. 4) can place on the variable cross-section; Also can (as Fig. 5) at the variable cross-section place, power transmission can solve by the setting between stake, post muscle.
If the B post is a rectangle, like or shear wall, can go into base plate at shear wall, establish a stiffening girder at base plate, with falling the form of structure of " eight " word the power of shear wall is imported in the stake.
If the C post is a shear wall.Between two or many, also can rationally solve with grade beam, shouldn't the specialize cushion cap.
But more than three kinds of situations all pile crown, the integrated solution post of cushion cap (shear wall) load problem.
1.2, the stake, cushion cap post eccentric force.
1.2.1, the stake core big, post is little of schematic diagram 6.
This situation is few, can utilize the towing effect of the main muscle of stake, alleviates the eccentric negative effect of post to stake, and other can be with reference to 1.1.1.
1.2.2, deflect away from a core or little, the post of stake core is big as schematic diagram 7.
This situation is not understood many yet.Before the pile driving construction, can strengthen top pile crown retaining wall diameter, satisfy the needs of post power transmission, progressively shrink the retaining wall diameter down, rationally connect along following pile wall according to the deviation between mast axis and stake axis.As long as retaining wall vertical projection in top comprises the bottom retaining wall, be convenient to the bottom pile driving construction and get final product.Other similar 1.1.2.
But above situation is pile crown, the integrated solution post of cushion cap (shear wall) load problem all.
2, discuss stake, cushion cap and the variation when (or nothing) grade beam is arranged may with the reply means.
2.1, when grade beam is arranged.
Because pile crown, cushion cap are integrated, cushion cap is simplified and is little many, makes the grade beam of going into cushion cap originally elongated.Base plate should resist the showy power of water, anti-again top pressure.Beam is elongated, even strengthen the beam main tendon cross section and add stirrup, this also than big cushion cap so that many, faster, make things convenient for manyly.If grade beam is big, handle with reference to the post situation.
2.2, during no grade beam.
Sometimes do not want to establish grade beam in (non-mainstream) design, strengthen the transmission of base plate thickness and cushion cap realizable force.The purpose that this situation strengthens cushion cap is in order to reduce the distance of a upper prop and intercolumniation base plate muscle.Little to the influence of end muscle, and bigger to the influence of base plate gluten.No matter it is much that anti-floating power has, all to pass to stake, post gets on, cushion cap greatly in fact, the main muscle of stake that can extend, the angle as required and the degree of depth are extended to the base plate gluten, and left-hand thread gluten (or dark beam of establishing) has also just realized being equivalent to the suffered power of cushion cap transmission gluten.Both simple, saving, easy construction again, quick.
Above pile crown, cushion cap is integrated also can satisfy its functional requirement.
It is fixed how reinforcing bar between stake certainly, post, grade beam, base plate connects by design, by design and construction.Design indeterminate by corresponding standard construction.
Three, operability.
Because pile crown, cushion cap are integrated, design, construction there are certain variation and influence, describe from the following aspect below.
(1), in the design.
Cushion cap is by obviously becoming not too obvious, and post, stake mode of transfer force are direct, so stake, post master muscle and should adjust according to stressing conditions between stirrup each other.Will mate at the bottom of pile crown and the post, will work good with post in pile crown retaining wall diameter and orientation.
(2), in the construction.
1, measures unwrapping wire.
1.1, the stake, the intercolumniation uniaxial force.
Determine pile center's point position (also just having determined the mast axis position) earlier, determine again whether the pile wall diameter changes, as change, make it coupling.
1.2, the stake, the intercolumniation eccentric force.
Determining earlier pile center point position, constructs according to the diameter that the pile wall top of having reserved and post match in definite mast axis position, back.Before the construction the outer location, safe place of the first joint of all directions direction extension pile wall is pressed in fixed pile center's point position.Deng first joint panelling construction good after, with four reinforcing bars head is set up at a cubic control point again and saves appropriate point position, retaining wall top.The retaining wall joint that cooperates post is by the regulation and control of mast axis position, and after pile crown cooperated retaining wall to put in place, the stake position was at once with pile center's point position (four control points) control.
2, reinforcing bar.
Stake after now simplifying, post muscle might be related according to design, add to also have grade beam, base plate muscle to intersect again, and little empty pile crown reinforcement construction operation easier is strengthened.The priority order of reinforcement construction so must plan sth. ahead.
3, pile wall.
Pile wall coexists up and down mutually, and this does not discuss.What be concerned about is that top retaining wall diameter is big, the situation that the bottom is little.That will notice at this moment that big footpath retaining wall becomes that retaining wall muscle between normal path retaining wall connects keeps under strict control and the quality of its concrete, not so has hidden danger.If stake footpath is big, the stake machine radius of gyration is not enough, process the timber pile machine radius of gyration specially, guarantees the construction safety behind the variable cross-section.Note the safety and stability of the outer soil body 6 of stake in addition.When construction ground beam form 2, to fuse with pile wall.When the construction cushion cap, note the construction of grade beam or bottom board concrete bed course 5.
In sum, to single pile single-column ordinary circumstance be can stake, post, grade beam, the direct power transmission of base plate.That is to say that manhole pile head, the integrated normal condition of cushion cap are feasible, the construction period is helpful in foundation ditch to shortening for this.
Claims (5)
1, a kind of pile head and bearing stand integrated construction method, it is characterized in that: comprise following construction sequence: (1) determines the shape of manhole pile head according to the design section size of post in the foundation structure or grade beam, and when the stake of construction manhole required pile crown is partly constructed and become above-mentioned shape; (2) basic grade beam, base plate bed course normal construction are being destroyed the design sectional dimension that the pile wall redundance makes it to satisfy post, grade beam, base plate with manhole stake binding site, and remaining empty pile crown retaining wall partly is the cushion cap topotype; (3) the post reinforcing bar is connected by design with the pile crown reinforcing bar, reaches the anchorage length of design or regulation and stipulation; (4) pour concrete, the label of cushion cap part concrete are high by design alternative in stake and post or grade beam.
2, pile head and bearing stand integrated construction method as claimed in claim 1, it is characterized in that:, directly the main muscle of structural column or grade beam is connected with a main muscle by design when the cross section of structural column or grade beam need not enlarge the stake footpath less than the manhole stake and when not eccentric with respect to the stake axial line.
3, pile head and bearing stand integrated construction method as claimed in claim 1, it is characterized in that:, directly the main muscle of structural column or grade beam is connected with a main muscle by design when the cross section of structural column or grade beam enlarges the stake footpath greater than the manhole stake and when not eccentric with respect to the stake axial line on demand in the stake top bit.
4, pile head and bearing stand integrated construction method as claimed in claim 1, it is characterized in that:, by design the main muscle bending of stake is entered in structural column or the grade beam then to be connected with its main muscle when the cross section of structural column or grade beam need not enlarge the stake footpath less than the manhole stake and when eccentric with respect to the stake axial line.
5, pile head and bearing stand integrated construction method as claimed in claim 1, it is characterized in that: when structural column vertically deflects away from a core position, enlarge the stake footpath on demand so that post is supported in the stake, by design the main muscle bending of stake is entered in structural column or the grade beam then and be connected with its main muscle in the stake top bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100334243A CN100436720C (en) | 2006-01-26 | 2006-01-26 | Pile head and bearing stand integrated construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100334243A CN100436720C (en) | 2006-01-26 | 2006-01-26 | Pile head and bearing stand integrated construction method |
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| CN1807766A true CN1807766A (en) | 2006-07-26 |
| CN100436720C CN100436720C (en) | 2008-11-26 |
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| CNB2006100334243A Expired - Fee Related CN100436720C (en) | 2006-01-26 | 2006-01-26 | Pile head and bearing stand integrated construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205722B (en) * | 2006-12-18 | 2010-05-19 | 郑鸿彰 | Integral rapid construction method for earthwork, ground mould and pile of manhole pile multi-pile cap |
| CN103953054A (en) * | 2014-04-01 | 2014-07-30 | 中铁大桥局集团第一工程有限公司 | Dry-sealed concrete pile foundation for protecting pile head reinforcement and construction method thereof |
| CN104695459A (en) * | 2013-12-10 | 2015-06-10 | 江苏建华管桩有限公司 | Connection method of concrete precast pile and pile foundation cap |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182196Y (en) * | 1994-01-31 | 1994-11-09 | 邓祥林 | Hollow precast reinforced pile |
| JP2004107897A (en) * | 2002-09-13 | 2004-04-08 | Izumo Kensetsu Kk | Unrigid joint method of pile head of small calibered steel pipe pile in housing foundation |
| CN2644508Y (en) * | 2003-09-19 | 2004-09-29 | 陆见华 | Concrete immersed tube filling pile with a bearing platform |
| JP3799036B2 (en) * | 2003-09-26 | 2006-07-19 | 株式会社竹中工務店 | Building basic structure and construction method |
-
2006
- 2006-01-26 CN CNB2006100334243A patent/CN100436720C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205722B (en) * | 2006-12-18 | 2010-05-19 | 郑鸿彰 | Integral rapid construction method for earthwork, ground mould and pile of manhole pile multi-pile cap |
| CN104695459A (en) * | 2013-12-10 | 2015-06-10 | 江苏建华管桩有限公司 | Connection method of concrete precast pile and pile foundation cap |
| CN103953054A (en) * | 2014-04-01 | 2014-07-30 | 中铁大桥局集团第一工程有限公司 | Dry-sealed concrete pile foundation for protecting pile head reinforcement and construction method thereof |
| CN103953054B (en) * | 2014-04-01 | 2016-01-20 | 中铁大桥局集团第一工程有限公司 | A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar |
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| Publication number | Publication date |
|---|---|
| CN100436720C (en) | 2008-11-26 |
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