CN204898653U - Device is strengthened to pile head of foundation pile - Google Patents
Device is strengthened to pile head of foundation pile Download PDFInfo
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- CN204898653U CN204898653U CN201420732677.XU CN201420732677U CN204898653U CN 204898653 U CN204898653 U CN 204898653U CN 201420732677 U CN201420732677 U CN 201420732677U CN 204898653 U CN204898653 U CN 204898653U
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Abstract
The utility model provides a device is strengthened to pile head of foundation pile, possesses: the lower part supporter is the disc, is formed with the notch along the edge with the regulation interval, the upper strut body, wholly be the ring form, have towards the outside outstanding joint portion of three direction, the upper strut body and lower part supporter are separating the regulation interval along upper and lower direction, a plurality of for the enhancement reinforcing bars that are used for strengthening the pile head at the corresponding position welded fastening of lower part supporter, it bindes and is used for surrounding a plurality of cyclic annular stirrup of strengthening with the reinforcing bar to separate the regulation interval from the lower part supporter, and bind the upper strut body integratively fix on upper portion, form device is strengthened to pile head of foundation pile from this, with the pile head strengthen the device insert to the pile head through the arrangement hollow form foundation pile inside, follow -up deposit concrete solidifies, with the pile head of strengthening the foundation pile. It is convenient for make and set up at on -site Assembly in the mill, can reduce cost to strengthen the pile head of foundation pile simply, easily make and set up on the foundation pile.
Description
Technical field
In order to carry out various civil engineering carry out foundation construction time, in order to strengthen soft foundation, the various foundation piles such as hollow prestress high-strength concrete pipe pile (PHCpile) or steel pipe pile are squeezed into ground, to strengthen soft foundation, after setting this foundation pile (driven pile), in order to follow-up relevant construction of constructing to foundation ground that is that carry out, need arrange the pile crown (head) of foundation pile and strengthen the pile crown of hyollow foundation stake inside, carry out the ground construction becoming various architecture basics afterwards.
The utility model relates to when carrying out various building as above and civil engineering in order to strengthen the pile crown stiffening device of the foundation pile that soft foundation sets, and it possesses respectively: lower support body, is formed with notch at predetermined intervals along edge, and upper support, overall in circular, and have towards Access Division outwardly, three directions, wherein, these upper support and lower support body up and down across predetermined distance, and be welded and fixed the multiple reinforcement reinforcing bars for strengthening pile crown at the relevant position of lower support body, afterwards, from lower support body across the multiple ring-type stirrups of predetermined distance binding for surrounding reinforcement reinforcing bar, and upper support is bundled integratedly be fixed on topmost, the pile crown stiffening device of basis of formation stake thus, and it is inner through the foundation pile of the hollow shape arranged it to be inserted into easily pile crown, fluid concrete being cured subsequently, to strengthen the pile crown of foundation pile, like this, because structure is simple, therefore, it is possible to easily arrange, strengthen pile crown simply.
Background technology
Generally, soft foundation (softground) refers to that ground itself cannot bear the ground exceeding admissible value from the load of top structure or Predicted settlement amount, there are bury, loose sand soil, organic soil etc., if directly build road, bridge, building etc. on the ground be made up of these buries or organic soil, surface of shear settling amount will be caused excessive, support force is not enough, thus the safety problems such as foundation settlement occur.
Therefore, when soft foundation as above carries out the construction of various structure, safety and the settlement issues of structure must be considered, the method conventional in order to the safety and settlement issues of tackling this structure has, the load loaded on ground is made to be passed to the method (utilizing the method for pile tube) of firm supporting layer, the form of construction work of the method is as follows: according to ground state, method (knocking is squeezed in employing, vibration) or imbed method etc., the steel pipe pile that continuous knocking is prefabricated in the factory, PHC piles (PHCpile), prestressed concrete pipe pile (PCpile), centrifugal reinforced concrete pile tube (RCpile) etc., after suitably squeezing into, appropriateness arranges the pile crown (head) projecting to the ground top of planning, to strengthen its pile crown (headpart), and the method that this pile crown to giving prominence to arranges and strengthens is called pile crown method for sorting.
Such arrangement and strengthening after pile crown, floor reinforcement is arranged at an upper portion thereof with horizontal direction, and pour into a mould base concrete, the base concrete making to be driven into stake in soft foundation and cast forms one, build various structure on the top of base concrete afterwards, thus the load of various structure is stably supported by the stake that is driven into and base concrete.
Like this, when arranging pile crown (the pile crown reinforcement) of squeezing into the foundation pile in soft foundation, discoid bottom plectane prescribed depth is inserted to the foundation pile inside be driven into, and erect reinforcement reinforcing bar wherein, by reinforcement reinforcing bar, specific length is given prominence on the foundation pile top be arranged to from being driven into, the inner fluid concrete of backward hyollow foundation stake after be cured, thus arrange and strengthen the pile crown of foundation pile, for this reason, the pile crown that have developed various foundation pile adds the pile crown stiffening device etc. of strong method and foundation pile.
Such as, when utilizing PHC piles (PHCpile) to strengthen pile crown, there is the cover plate for covering PHC piles top, for the fixed part of fixing reinforcement reinforcing bar and a large amount of component parts of other reinforcing bar and short tubes etc. for strengthening it, need to take long to manufacture for this reason, manufacturing cost is high, has that assembling difficulty is high, structure are long in time limit, operating expenses increases, weight increases and causes degradation problem under operability thus.
In order to make up the problems referred to above, import for connecting separated multiple upper support board and the independent fixture of PHC piles, but in order to prevent used reinforcement reinforcing bar bias mobile, except form through patchhole on upper support board except, lower support plate forms independent installing hole, and reinforcement reinforcing bar is arranged in patchhole and installing hole exactly, therefore there is the accurate problem that the activity duration prolongation that the operation of reinforcement reinforcing bar brings is set, in addition, owing to individually producing fixture and upper support board, and upper support board is made into plate shape, thus cause manufacturing cost to increase.
Utility model content
Therefore, the utility model is developed in order to all problems solving prior art as above, and object is the pile crown stiffening device providing a kind of foundation pile, and it possesses: lower support body, in plate-like, and is formed with notch at predetermined intervals along edge, and upper support, overall in circular, and have towards Access Division outwardly, three directions, wherein, these upper support and lower support body up and down across predetermined distance, and be welded and fixed the multiple reinforcement reinforcing bars for strengthening pile crown at the correspondence position of lower support body, afterwards, from lower support body across the multiple ring-type stirrups of predetermined distance binding for surrounding reinforcement reinforcing bar, upper support is bundled integratedly and is fixed on topmost, the pile crown stiffening device of basis of formation stake thus, the pile crown stiffening device of this foundation pile is inserted into pile crown inner through the foundation pile of the hollow shape arranged, fluid concrete being cured afterwards, to strengthen the pile crown of foundation pile, thus easily at the pile crown stiffening device that factory manufactures and assembling arranges foundation pile at the scene, thus can reduce costs, and strengthen the pile crown of foundation pile simply, thus be easy to manufacture and be easy to be arranged on foundation pile.
In addition, the purpose of this utility model is the pile crown stiffening device providing a kind of foundation pile, edge along lower support body possesses notch and bending part, thus more easily insert and close contact when foundation pile inserts lower support body, and the Concrete Leakage of follow-up cast can be prevented, described upper support is connected in the external diameter of the foundation pile be set up, thus strengthens the pile crown of foundation pile safely.
In addition, another object of the present utility model is the pile crown stiffening device providing a kind of foundation pile, upper support entirety is in circular, and have towards Access Division outwardly, three directions, the bent shape in the arc-shaped of each spring between these each Access Divisions, these limits bundle the reinforcement reinforcing bar of requirement freely, thus the field condition of the soft foundation strengthened as required increases and decreases reinforcement reinforcing bar freely, freely arrangement of reinforcement and binding reinforcement reinforcing bar.
In addition, another object of the present utility model is the pile crown stiffening device providing a kind of foundation pile, the end of the Access Division outwardly of upper support has the snap fit (bending snap fit) of downward bending predetermined angular, this snap fit is connected in the outer surface of foundation pile, to provide stable support, thus the phenomenon causing the movement of reinforcement reinforcing bar bias or global displacement due to impact grade may be applied in during follow-up fluid concrete can be prevented in advance, can construct safely and reliably.
In order to solve the problem, the pile crown stiffening device of foundation pile of the present utility model, described foundation pile, for strengthening soft foundation, is characterized in that, possesses: lower support body, in plate-like, and is formed with notch at predetermined intervals along edge; Upper support, overall have towards Access Division outwardly, three directions in circular, and using the fixed part of each circular arc limit between these Access Divisions as reinforcement reinforcing bar; Multiple bar-shaped reinforcement reinforcing bar; And multiple ring-type stirrup,
Wherein, described upper support and lower support body are in the vertical direction across predetermined distance, and be welded and fixed the multiple reinforcement reinforcing bars for strengthening pile crown at the correspondence position of lower support body, from this lower support body across the multiple ring-type stirrups of predetermined distance binding for surrounding reinforcement reinforcing bar, and with reinforcing bar binding line, upper support is fixed on topmost integratedly, with the pile crown stiffening device of basis of formation stake.
In addition, described lower support body is plate-like, and diameter is greater than the internal diameter of foundation pile, and be formed with notch along edge across predetermined distance, multiple bending parts of upwards bending are formed between each notch, when being inserted in hyollow foundation stake and being inner, described notch and bending part by bending to be inserted into foundation pile inside with the state of foundation pile inner surface close contact, to prevent the concrete seepage of follow-up cast.
In addition, upper support entirety is in circular, and have towards Access Division outwardly, three directions, this Access Division also has the snap fit from its end downward bending predetermined angular, described Access Division and snap fit are connected in the outer surface of foundation pile in three directions, thus described upper support is supported by foundation pile.The phenomenon causing the movement of reinforcement reinforcing bar bias or global displacement due to impact grade may be applied in during follow-up fluid concrete can be prevented so in advance, construct safely and reliably.
In addition, the through hole arranged across predetermined distance is formed inside the notch of described lower support body, the diameter of this through hole is less than the diameter of reinforcement reinforcing bar, so that expose strengthen with under end reinforced state to reinforcement be welded and fixed with end reinforced, also possesses reinforcing rib, the uper side surface of this reinforcing rib lower portion supporter is given prominence to, and formed from the central point of lower support body along radiation direction, when lower support body being inserted in by force the inside of foundation pile, prevent lower support body deformability and indefinite form breakage by this reinforcing rib.
In addition, described reinforcement reinforcing bar is, entirety is in-line and forms the flexure type reinforcing bar of twice bending or inclination in middle position, thus allows the upper end of described reinforcement reinforcing bar to rotate with predetermined radius centered by the lower end of reinforcement reinforcing bar.
By this structure, the pile crown stiffening device of foundation pile as constructed as above is inserted into easily pile crown inner through the foundation pile arranged, fluid concrete being cured afterwards, to strengthen the pile crown of foundation pile, because structure is simple, therefore, it is possible to easily manufacture in factory and assemble setting at the scene, can reduce costs, use the simple pile crown stiffening device of structure to strengthen the pile crown of foundation pile, be easy to manufacture and arrange.
And, because the side of the lower support body along described pile crown stiffening device is formed with notch and bending part, therefore when pile crown stiffening device is inserted in the inside of foundation pile, adjacent notch narrows and close contact each other, the bending part close contact of these notchs is in foundation pile inner surface, upwards be inserted into bending simultaneously, by these notchs and bending part, lower support body and foundation pile inner surface close contact, thus the follow-up Concrete Leakage (spilling) to the cast of foundation pile inside can be reduced to greatest extent.
In addition, upper support entirety is in circular, and have towards Access Division outwardly, three directions, being bundled in freely by the reinforcement reinforcing bar of requirement bends on each limit of circular shape, thus the field condition of the soft foundation that can strengthen as required increases and decreases reinforcement reinforcing bar freely, provide the degree of freedom of arrangement of reinforcement and binding.
In addition, the end of the Access Division outwardly of upper support has the snap fit of downward bending predetermined angular, this snap fit is connected in the outer surface of foundation pile, to provide stable support, thus the phenomenon causing the movement of reinforcement reinforcing bar bias or global displacement due to impact grade may be applied in during follow-up fluid concrete can be prevented in advance, construct safely and reliably.
Accompanying drawing explanation
Fig. 1 is the stereogram that the first embodiment of the present utility model relates to.
Fig. 2 A, Fig. 2 B are the stereograms of the upper support that relates to of the first embodiment of the present utility model and lower support body.
Fig. 3 is the state diagram pile crown stiffening device that the first embodiment of the present utility model relates to being inserted into stake inside.
Fig. 4 is the state that the arranges sectional view of the pile crown stiffening device that the first embodiment of the present utility model relates to.
Fig. 5 is the top view of the pile crown stiffening device according to the first embodiment setting of the present utility model.
Fig. 6 A, Fig. 6 B, Fig. 6 C are the state diagrams for illustration of arranging reinforcement reinforcing bar in the upper support of the first embodiment of the present utility model in many ways.
Fig. 7 is the stereogram that the second embodiment of the present utility model relates to.
Fig. 8 is the state that the arranges sectional view of the pile crown stiffening device that the second embodiment of the present utility model relates to.
Fig. 9 is the top view of the pile crown stiffening device according to the second embodiment setting of the present utility model.
Figure 10 is the state that the arranges sectional view of the pile crown stiffening device that the 3rd embodiment of the present utility model relates to.
Figure 11 is the rotating top view that the reinforcement reinforcing bar be applicable in the 3rd embodiment of the present utility model is shown.
Reference numeral
1: foundation pile
10: lower support body
11: notch
12: bending part
13: through hole
14: reinforcing rib
20: upper support
21: circular arc limit
22: Access Division
23: snap fit
30: reinforcement reinforcing bar
40: stirrup
Detailed description of the invention
The utility model relates in order to strengthen the pile crown stiffening device of the foundation pile that soft foundation sets in various building and civil engineering, and it possesses: lower support body, in plate-like, and is formed with notch at predetermined intervals along edge, and upper support, overall in circular, and have towards Access Division outwardly, three directions, wherein, these upper support and lower support body up and down across predetermined distance, and be welded and fixed the multiple reinforcement reinforcing bars for strengthening pile crown at the correspondence position of lower support body, afterwards, from lower support body across the multiple ring-type stirrups of predetermined distance binding for surrounding reinforcement reinforcing bar, and upper support is bundled integratedly be fixed on topmost, the pile crown stiffening device of formation base stake thus, and it is inner through the hollow shape foundation pile arranged the pile crown stiffening device of this foundation pile to be inserted into easily pile crown, follow-up fluid concrete is also cured, to strengthen the pile crown of foundation pile, because structure is simple, therefore, it is possible to easily manufacture in factory and assemble at the scene, can reduce costs, strengthen the pile crown of foundation pile simply.
The plate-like lower support body of the present utility model possessing structure described above is formed with notch at predetermined intervals along edge, multiple bending part is formed between each otch, thus when inserting the pile crown stiffening device of foundation pile to hyollow foundation stake inside, the bending part of these notchs and foundation pile inner surface close contact and bending is inserted, each adjacent notch is intimate contact with one another in the process inserted to foundation pile inside, thus can prevent the Concrete Leakage of follow-up cast.
Meanwhile, the end of the Access Division outwardly of upper support has the snap fit of downward bending predetermined angular, this snap fit is connected in the outer surface of foundation pile, to provide stable support, thus the phenomenon causing the movement of reinforcement reinforcing bar bias or global displacement due to impact grade may be applied in during follow-up fluid concrete can be prevented in advance, construct safely and reliably.
Below, with reference to illustrating that the accompanying drawing of specific embodiment of the utility model is described in detail.First embodiment
As shown in Figure 1, the pile crown stiffening device of the foundation pile of the first embodiment of the present utility model mainly comprises lower support body 10, upper support 20 and reinforcement reinforcing bar 30, describes in detail it.First, as shown in Figure 2 A, lower support body 10 is formed as plate-like, and along its edge to being formed radially notch 11, this notch 11 has the degree of depth of specific length, each notch 11 described is formed with multiple bending parts 12 of circumferentially parallel bending, so that easily bending to the inside.
In addition, as shown in Figure 3 or Figure 4, preferably, the external diameter of described lower support body 10 is greater than the internal diameter of the foundation pile 1 for arranging this lower support body 10, to be inserted in foundation pile 1 by force, thus, the adjacent notch 11 being inserted in the lower support body 10 of foundation pile 1 inside inserts with state intimate contact with one another, and bending part 12 internally bending (the upper direction bending to the foundation pile inserted by force), thus lower support body 10 can be made easily to be inserted in foundation pile 1 with the state of the complete close contact of inner peripheral surface of foundation pile 1.
As illustrated in figure 1 or 4, this described lower support body 10 is formed the multiple through holes 13 arranged across predetermined distance inside notch 11, the diameter of this through hole 13 is less than the diameter of reinforcement reinforcing bar 30, to expose the end of reinforcement reinforcing bar 30 and to be welded and fixed, by this structure, when the end of reinforcement reinforcing bar 30 is exposed from these through holes 13, as shown in the enlarged drawing of Fig. 4, by being exposed to the position on the downside of lower support body 10, the lower end distal portion of reinforcement reinforcing bar 30 and lower support body 10 are welded and fixed integratedly, afterwards, the position that the upside of lower support body 10 contacts with reinforcement reinforcing bar 30 welds together, thus make reinforcement reinforcing bar 30 with lower support body 10 for reference vehicular is erect.
In addition, lower support body 10 is formed the reinforcing rib 14 of petal shape, this reinforcing rib 14 is formed from the central point of lower support body 10 to radiation direction, the uper side surface being configured to lower portion supporter 10 due to these reinforcing ribs 14 is given prominence to, even if so lower support body 10 is to insert by force with the state of the complete close contact of the inner peripheral surface of foundation pile 1, also lower support body 10 can be prevented to be out of shape by these reinforcing ribs 14 and indefinite form breakage.
Secondly, as shown in Figure 2 A, it is bar-shaped and overall in circular that upper support 20 has a circular cross-section, and to have towards three directions Access Division 22 outwardly, and each limit 21 bending to circular shape is bundled by reinforcing bar binding line 41 the reinforcement reinforcing bar 30 of aequum freely.
As shown in Figure 6, the ring-type inner peripheral surface of reinforcement reinforcing bar 30 along this upper support 20 being inserted in foundation pile 1 inside, each limit 21 namely bending to circular shape are arranged to various forms and are supported, therefore, the diameter of shaped upper portion supporter 20 is only had to be less than or equal to foundation pile 1 internal diameter, just can make to keep predetermined distance between the reinforcement reinforcing bar 30 and the inwall of foundation pile 1 of foundation pile 1 inside, thereby, it is possible to the concrete thickness (t) poured into a mould when guaranteeing follow-up pouring concrete fully and fill.
As shown in FIG. 4 and 5, when the upper support formed as mentioned above 20 is arranged on foundation pile 1 top, each Access Division 22 outwardly, and its length is more outstanding relative to the internal diameter of foundation pile 1, due to this structure, firmly be connected in the upper end of foundation pile 1 while that each Access Division 22 keeping leg-of-mutton when arranging pile crown stiffening device afterwards, thus the pile crown stiffening device of foundation pile does not sink in foundation pile 1 inside and is stably supported further.
In addition, as shown in Figure 5, upper support 20 entirety is in circular, and the Access Division 22 had towards three directions outwardly, the limit 21 bending to circular shape is formed between these Access Divisions 22 outwardly, along these each limits 21 to configure the reinforcement reinforcing bar 30 of requirement across the interval (intensive or loose wait for arbitrary interval) of regulation, reinforcement reinforcing bar 30 and upper support 20 can be bundled with reinforcing bar binding line 41 afterwards, thus assembling upper support 20 integratedly.
Fig. 6 A represents the state configuring two reinforcement reinforcing bars 30 on each limit 21, Fig. 6 B represents the state configuring three reinforcement reinforcing bars 30 on each limit 21, Fig. 6 C represents the state configuring four reinforcement reinforcing bars 30 on each limit 21, the interval between reinforcement reinforcing bar 30 can be regulated according to required reinforcement reinforcing bar 30 quantity, configure reinforcement reinforcing bar 30 freely.
As a reference, most preferably, described lower support body 10 is formed by the metal material of excellent in te pins of durability with upper support 20, especially, be welded and fixed the lower support body 10 and the lower end of reinforcement reinforcing bar 30 that have and be applicable to lower thickness of the present utility model, make its be each one after, also secondary welding is carried out to weld these contacts site at the uper side surface of lower support body 10, thus make reinforcement reinforcing bar 30 with lower support body 10 for reference vehicular is erect, consider this point, most preferably, the material being applicable to lower support body 10 of the present utility model is identical with the material of reinforcement reinforcing bar 30 with the material of upper support 20.
Secondly, reinforcement reinforcing bar 30 is formed by common reinforcing bar, itself and foundation pile 1 form one, and on the upside of the supporting surface of foundation pile 1, be formed as various forms according to supporting way, it is formed as in-line by common steel bar overall, arrange by it is connected with the floor reinforcement be disposed on plane earth, to strengthen the ground of broad flat as sports ground, it can be used in floor reinforcement that level is laid on top has compared with wide interval thus the less ground (mass-type foundation ground) of bearing load.
The lower support body 10 utilizing and form as mentioned above is described referring to figs. 1 through Fig. 6, upper support 20 and foundation pile 1 stiffening device strengthened with reinforcing bar 30, first, the bottom of each reinforcement reinforcing bar 30 is inserted in the through hole 13 of lower support body 10, afterwards, be welded and fixed each reinforcement reinforcing bar 30 of exposing with lower support body 10 to be formed integrally, also the position contacted with reinforcement reinforcing bar 30 is welded at the uper side surface of lower support body 10, thus make reinforcement reinforcing bar 30 with lower support body 10 for reference vehicular is erect, afterwards upper support 20 is configured to separate suitable distance from the upside of lower support body 10, afterwards with reinforcing bar binding line 41 bundle be arranged on described upper support 20 across predetermined distance bend to reinforcement reinforcing bar on each limit 21 of circular shape 30 and upper support 20, so that upper support 20 is integrally fixed, the basic configuration of the pile crown stiffening device of foundation pile of the present utility model can be formed thus, if bundle ring-type stirrup across predetermined distance reinforcing bar binding line 41 between these upper support 20 and lower support body 10, then can form the pile crown stiffening device of more firmly foundation pile of the present utility model.
The pile crown stiffening device of the foundation pile of the present utility model of formation described above can be carried to the state resolving into described lower support body 10, upper support 20 and reinforcement reinforcing bar 30 etc. respectively the position (scene) will carrying out operation from factory etc., after needing the scene of carrying out foundation pile 1 reinforcement operation to carry out suitable welding, simply assemble with reinforcing bar binding line, or after described assembly to be manufactured the finished goods of pile crown stiffening device of foundation pile by manufacturing works, be carried to and on-the-spotly directly used.The using method of the pile crown stiffening device of this foundation pile is described with reference to Fig. 3 and Fig. 4.
First, utilize the pile driver squeezing into foundation pile at soft foundation, foundation pile 1 is squeezed into after enough dark desired depth, the upper end protruding from ground foundation pile 1 is arranged, the top of the foundation pile 1 protruding from ground and ground is made to keep suitably height, backward each foundation pile 1 inside insert the lower support body 10 of the pile crown stiffening device of foundation pile, as shown in Figure 4, bending part 12 is passed through by the gap smaller between each notch 11 adjacent one another are while bending between each notch 1, thus be embedded in the medial surface of foundation pile 1 more closely, the pile crown stiffening device inserted by this way is configured to, the Access Division 22 outwardly of upper support 20 is connected in the upper end of foundation pile 1 in three directions, thus stably supported at the pile crown of foundation pile 1, as shown in Figure 3 to Figure 4, the pile crown stiffening device of foundation pile of the present utility model stably can be set on foundation pile 1.
Now, diameter due to lower support body 10 is greater than the internal diameter of foundation pile 1, when therefore inserting lower support body 10 to foundation pile 1 inside in the manner as described above, each notch 11 of lower support body 10 is by bending part 12 bending to foundation pile 1 inner surface close contact, thus lower support body 10 can stably be inserted in uneven, the rough foundation piles 1 such as the uneven or side of inner surface is outstanding, the interior surface state of the corresponding foundation pile 1 of each notch 11, with close contact, the mode of bending is inserted into.
And, on the downside of the airtight inner space being provided with the foundation pile 1 of the pile crown stiffening device of foundation pile as mentioned above of lower support body 10, now, be cured to the inner fluid concrete of foundation pile 1, thus operation strengthened by the pile crown completing foundation pile under the state being provided with reinforcement reinforcing bar 30 in foundation pile 1 inside, thus, the concrete poured into a mould afterwards is put to the top of lower support body 10, and be in chimerism due to the edge of lower support body 10, namely by notch 11 and the upper and lower space of the closely spaced one-tenth of bending part 12, thus the phenomenon of the bottom seepage of the concrete lower portion supporter 10 poured into a mould can be prevented.
Like this, the direction consistent with ground that the reinforcement reinforcing bar 30 of the vertical direction outstanding with the top of the foundation pile 1 strengthened to pile crown is vertical arranges floor reinforcement (not shown), and the in-line reinforcement reinforcing bar 30 be securely fixed in upper support 20 by reinforcing bar binding line does not move about and keeps steady status, pour into a mould foundation ground concrete to after its intensive connection, laying floor reinforcing bar, thus complete the foundation ground construction of soft foundation.
Second embodiment
As shown in Figure 7 to 9, the pile crown stiffening device of the foundation pile of the second embodiment of the present utility model roughly comprises lower support body 10, upper support 20 and reinforcement reinforcing bar 30, and this point is roughly the same with the first embodiment.But the maximum feature of this embodiment is, the Access Division 22 outwardly of upper support 20 is formed as longer, but also possesses the snap fit 23 of its end downward bending predetermined angular.
Thus, when plugging pile crown stiffening device of the present utility model to foundation pile 1 inside, the Access Division 22 of upper support plays once stable supporting role by contacting with the upper surface of foundation pile 1, these three snap fits 23 are connected in the outer surface of foundation pile 1 in three directions to provide stable support afterwards, thus the phenomenon causing the movement of reinforcement reinforcing bar 30 bias or global displacement due to impact grade may be applied in during follow-up fluid concrete can be prevented in advance, construct safely and reliably.
3rd embodiment
As shown in figs.10 and 11, the pile crown stiffening device of the foundation pile of the 3rd embodiment of the present utility model illustrates another embodiment of reinforcement reinforcing bar 30, use in this embodiment overall in in-line but middle position twice bending or inclination flexure type reinforcing bar, namely have
shape or
the reinforcing bar of shape.
This embodiment is applicable to following situation: the flat floor reinforcement comparatively dense being disposed in the pile crown stiffening device top of foundation pile of the present utility model due to level, cause and interference phenomenon (interference phenomenon when reinforcement reinforcing bar and intensive floor reinforcement arrangement of reinforcement) occurs during reinforcement reinforcing bar 30 arrangement of reinforcement, Figure 10 (A) part and Figure 11 (A) part shown in, due to the reinforcement crooked position of reinforcing bar 30, when reinforcement rotates to horizontal direction with reinforcing bar 30, the upper end of reinforcement reinforcing bar 30 is undertaken rotating (to strengthen rotating the length being equivalent to bend centered by the lower end with reinforcing bar) by predetermined radius, the interference between reinforcement reinforcing bar 30 and floor reinforcement can be avoided thus.
Thus, (A) part of Figure 11 is for illustration of the radius of gyration of reinforcement with reinforcing bar 30, this flexure type reinforcement reinforcing bar 30 can rotate with the predetermined radius being equivalent to the position that dotted line represents, therefore, the common building or building structure etc. of point load is subject to as the intensive laying reinforcing bar of level at an upper portion thereof, this reinforcement reinforcing bar 30 can strengthen ground, bear the position (local foundation ground) of larger point load at an upper portion thereof simultaneously, it is made to rotate to prevent each reinforcing bar interfering with each other, thus, the floor reinforcement arranged with horizontal direction can be reduced to greatest extent interfering with each other, various construction can be carried out.
As implied above, the pile crown stiffening device of foundation pile of the present utility model not only can be integrally manufactured in factory, also can ease of assembly and setting at the scene, thus the reduction of erection time, in addition, even the inner surface of the foundation piles such as the PHC piles of centrifugal forming has slightly irregular surface, also the pile crown stiffening device of foundation pile can be prevented eccentric mobile up and down, thus the pile crown strengthened condition of foundation pile is stablized, and relative to prior art, the structure of upper support is extremely simple, thus more easily produce, assemble and the pile crown stiffening device of foundation pile is set.
In addition, the bar-shaped and overall of the rounded cross section of upper support is circular, and has towards Access Division outwardly, three directions, thus can reduce its size, weight and material while keeping intensity.
Further, by notch and the bending part of described lower support body, lower support body is that foundation pile inner space is separated and completely cut off into upper and lower space by benchmark completely with lower support body, thus Concrete Leakage (leaking) also can be prevented after fluid concrete, thus the concrete quality of cast can be ensured, and keep intensity.The foundation pile of the pile crown stiffening device of applicable foundation pile of the present utility model described above is not defined in steel pipe pile or prestressed high strength concrete (PHC:PretentionedspunHighstrengthConcretepiles) pile tube, goes for arbitrary foundation pile.
In addition; the utility model is not defined in above-mentioned illustrative specific embodiment; within the scope of the technological thought that those skilled in the art can express at the utility model; various suitable design alteration and amendment are carried out to each inscape, and this simple design alteration also belongs in protection domain of the present utility model.
Claims (5)
1. a pile crown stiffening device for foundation pile, described foundation pile, for strengthening soft foundation, is characterized in that, possesses:
Lower support body, in plate-like, and is formed with notch at predetermined intervals along edge;
Upper support, overall have towards Access Division outwardly, three directions in circular, and using the fixed part of each circular arc limit between these Access Divisions as reinforcement reinforcing bar;
Multiple bar-shaped reinforcement reinforcing bar; And
Multiple ring-type stirrup,
Wherein, described upper support and lower support body are in the vertical direction across predetermined distance, and be welded and fixed the multiple reinforcement reinforcing bars for strengthening pile crown at the correspondence position of lower support body, from this lower support body across the multiple ring-type stirrups of predetermined distance binding for surrounding reinforcement reinforcing bar, and with reinforcing bar binding line, upper support is fixed on topmost integratedly, with the pile crown stiffening device of basis of formation stake.
2. the pile crown stiffening device of foundation pile according to claim 1, is characterized in that,
Upper support entirety in circular, and has towards Access Division outwardly, three directions, and this Access Division also has the snap fit from its end downward bending predetermined angular,
Described Access Division and snap fit are connected in the outer surface of foundation pile in three directions, thus described upper support is supported by foundation pile.
3. the pile crown stiffening device of foundation pile according to claim 1, is characterized in that,
Described lower support body is plate-like, and diameter is greater than the internal diameter of foundation pile, and be formed with notch along edge across predetermined distance, multiple bending parts of upwards bending are formed between each notch, when being inserted in hyollow foundation stake and being inner, described notch and bending part by bending to be inserted into foundation pile inside with the state of foundation pile inner surface close contact, to prevent the concrete seepage of follow-up cast.
4. the pile crown stiffening device of the foundation pile according to claim 1 or 3, is characterized in that,
Be formed inside the notch of described lower support body across predetermined distance arrange through hole, the diameter of this through hole is less than the diameter of reinforcement reinforcing bar, so as expose strengthen with under end reinforced state to reinforcement be welded and fixed with end reinforced,
Also possess reinforcing rib, the uper side surface of this reinforcing rib lower portion supporter is given prominence to, and is formed from the central point of lower support body along radiation direction,
When lower support body being inserted in by force the inside of foundation pile, prevent lower support body deformability and indefinite form breakage by this reinforcing rib.
5. the pile crown stiffening device of foundation pile according to any one of claim 1 to 4, is characterized in that,
Described reinforcement reinforcing bar is, entirety is in-line and forms the flexure type reinforcing bar of twice bending or inclination in middle position, thus allows the upper end of described reinforcement reinforcing bar to rotate with predetermined radius centered by the lower end of reinforcement reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732677.XU CN204898653U (en) | 2014-11-27 | 2014-11-27 | Device is strengthened to pile head of foundation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732677.XU CN204898653U (en) | 2014-11-27 | 2014-11-27 | Device is strengthened to pile head of foundation pile |
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| CN204898653U true CN204898653U (en) | 2015-12-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696548A (en) * | 2014-11-27 | 2016-06-22 | (株) 基安地 | Pile head reinforcing device for foundation pile |
| CN113737776A (en) * | 2021-08-02 | 2021-12-03 | 中铁隧道局集团有限公司 | Ultra-long steel pipe pile under condition of marine-facies deep mucky soil and construction method thereof |
-
2014
- 2014-11-27 CN CN201420732677.XU patent/CN204898653U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696548A (en) * | 2014-11-27 | 2016-06-22 | (株) 基安地 | Pile head reinforcing device for foundation pile |
| CN113737776A (en) * | 2021-08-02 | 2021-12-03 | 中铁隧道局集团有限公司 | Ultra-long steel pipe pile under condition of marine-facies deep mucky soil and construction method thereof |
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Granted publication date: 20151223 Termination date: 20201127 |