CN105696548A - Pile head reinforcing device for foundation pile - Google Patents
Pile head reinforcing device for foundation pile Download PDFInfo
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- CN105696548A CN105696548A CN201410707587.XA CN201410707587A CN105696548A CN 105696548 A CN105696548 A CN 105696548A CN 201410707587 A CN201410707587 A CN 201410707587A CN 105696548 A CN105696548 A CN 105696548A
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Abstract
The invention discloses a pile head reinforcing device for a foundation pile. The pile head reinforcing device is provided with a lower support body and an upper support body, wherein the lower support body is disc-shaped and provided with notch parts at a specified interval respectively along an edge; the upper support body is annular as a whole, and provided with clamping parts projecting outwards towards three directions; the upper support body and the lower support body are spaced at a specified interval along an up-down direction; a plurality of reinforcing steel bars used for reinforcing a pile head are welded and fixed at corresponding positions of the lower support body; a plurality of annular stirrups used for surrounding the reinforcing steel bars are bound from the lower support body at a specified interval respectively; the upper support body is integrally bound and fixed at the uppermost part; in this way, the pile head reinforcing device for the foundation pile is formed; and the pile head reinforcing device is inserted into a hollow foundation pile with the arranged pile head, and concrete is poured in the subsequent process and cured to reinforce the pile head of the foundation pile. The pile head reinforcing device is convenient to manufacture in a factory, and assemble and arrange in the field; the cost can be reduced; the pile head of the foundation pile is simply reinforced; and the foundation pile is easy to manufacture and arrange on the foundation pile.
Description
Technical field
When carrying out foundation construction to carry out various civil engineering, 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), for the follow-up construction relevant to foundation ground construction that be that carry out, need arrange the pile crown (head) of foundation pile and strengthen the pile crown within hyollow foundation stake, carry out becoming the ground construction of various architecture basics afterwards。
The present invention relates to the pile crown stiffening device of the foundation pile set when carrying out various building as above and civil engineering in order to strengthen soft foundation, it possesses respectively: lower support body, is formed with notch at predetermined intervals along edge；And upper support, overall in circular, and have towards three outwardly directed prominent Access Divisions, wherein, these upper support and lower support body up and down across predetermined distance, and it is 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 predetermined distance binding for surrounding multiple ring-type stirrups of reinforcement reinforcing bar, and upper support bundled integratedly be fixed on topmost, it is consequently formed the pile crown stiffening device of foundation pile, and it is inserted into easily pile crown inside the foundation pile of the hollow shape arranged, pour into a mould concrete subsequently and solidify, to strengthen the pile crown of foundation pile, so, due to simple in construction, therefore, it is possible to be easy to set up, strengthen pile crown simply。
Background technology
Generally, soft foundation (softground) refers to that ground itself cannot bear from ground beyond feasible value of the load of top structures or Predicted settlement amount, there are bury, loose sand soil, organic soil etc., if directly building road, bridge, building etc. on the ground being made up of these buries or organic soil, to cause that shear surface settling amount is excessive, support force is not enough, thus there is the safety problems such as settlement of foundation。
Therefore, when soft foundation as above carries out the construction of various structures, must take into the safety of structures and settlement issues, the method conventional for the safety and settlement issues of tackling this structures has, make the method (method utilizing pile tube) of the supporting layer that the load loading on ground is transferred to consolidate, the form of construction work of the method is as follows: according to ground state, method (knocking is squeezed in employing, vibration) or embedment method etc., thump continuously the steel-pipe pile being 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) on the ground top projecting to planning, to strengthen its pile crown (headpart), and this prominent pile crown is arranged and the method strengthened is called pile crown method for sorting。
After so arranging and strengthening 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 stake and the cast being driven in soft foundation forms one, various structures are built afterwards, thus the load of various structures is stably supported by stake and the base concrete being driven on the top of base concrete。
So, when arranging pile crown (the pile crown reinforcement) of the foundation pile squeezed into soft foundation, discoid bottom plectane prescribed depth is inserted to the foundation pile being driven into is internal, and erect reinforcement reinforcing bar wherein, reinforcement reinforcing bar is arranged to the prominent specific length from the foundation pile top being driven into, backward hyollow foundation stake internal cast concrete after solidify, thus arranging and strengthen the pile crown of foundation pile, for this, have developed the pile crown of various foundation pile and add 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 fixing parts of fixing reinforcement reinforcing bar and for strengthening its substantial amounts of component parts such as other reinforcing bar and short tubes etc., need to take long to for this to manufacture, manufacturing cost is high, and thus existence assembles difficulty height, structures are long in time limit, operating expenses increases, weight increases and causes degradation problem under operability。
In order to make up the problems referred to above, import the independent fixture for connecting separated multiple upper support boards and PHC piles, but in order to prevent the reinforcement reinforcing bar bias used from moving, except forming through insertion hole on upper support board, lower support plate is formed independent installing hole, and reinforcement reinforcing bar is accurately fitted within insertion hole and installing hole, therefore there is the problem that precision arranges the activity duration prolongation that reinforcement reinforcing bar operation brings, in addition, owing to individually producing fixture and upper support board, and upper support board is fabricated to plate shape, thus causing that manufacturing cost increases。
Summary of the invention
Therefore, the present invention develops to solve all problems of prior art as above, it is therefore intended that providing the pile crown stiffening device of a kind of foundation pile, it possesses: lower support body, disc-shaped, and is formed with notch at predetermined intervals along edge；And upper support, overall in circular, and have towards three outwardly directed prominent Access Divisions, wherein, these upper support and lower support body up and down across predetermined distance, and it is 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 predetermined distance binding for surrounding multiple ring-type stirrups of reinforcement reinforcing bar, upper support is bundled integratedly and is fixed on topmost, it is consequently formed the pile crown stiffening device of foundation pile, the pile crown stiffening device of this foundation pile is inserted into pile crown inside the foundation pile of the hollow shape arranged, pour into a mould concrete afterwards and solidify, to strengthen the pile crown of foundation pile, thus easily manufacture in factory and assemble the pile crown stiffening device that foundation pile is set at the scene, it is thus possible to reduction cost, and strengthen the pile crown of foundation pile simply, thus it is easily fabricated and be easily disposed on foundation pile。
In addition, it is an object of the invention to provide the pile crown stiffening device of a kind of foundation pile, edge along lower support body possesses notch and bending part, thus being easier to insert when inserting lower support body to foundation pile and being in close contact, and it is prevented from the Concrete Leakage of follow-up cast, described upper support is connected in the external diameter of the foundation pile being set, thus strengthening the pile crown of foundation pile safely。
In addition, further object is that the pile crown stiffening device that a kind of foundation pile is provided, upper support entirety is circular, and have towards three outwardly directed prominent Access Divisions, 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, arrangement of reinforcement and binding reinforcement reinforcing bar freely。
In addition, further object is that the pile crown stiffening device that a kind of foundation pile is provided, the end of the Access Division outwardly of upper support has the snap fit (snap fit of bending) of downward bending predetermined angular, this snap fit is connected in the outer surface of foundation pile, to provide stable support, wait thus being likely to when can prevent in advance due to follow-up cast concrete to be applied in impact and cause reinforcement reinforcing bar bias to move or the phenomenon of global displacement, it is possible to construct safely and reliably。
In order to solve the problems referred to above, the pile crown stiffening device of the foundation pile of the present invention possesses: lower support body, disc-shaped, and is formed with notch at predetermined intervals along edge；Upper support, overall have towards three outwardly directed prominent Access Divisions in circular, and using each limit of the circular shape between these Access Divisions fixed part as reinforcement reinforcing bar；Multiple bar-shaped reinforcement reinforcing bars；And multiple ring-type stirrup, wherein, described upper support and lower support body are in the vertical direction across predetermined distance, and it is 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 predetermined distance binding for surrounding multiple ring-type stirrups of reinforcement reinforcing bar, and with reinforcing bar binding line, upper support is integrally fixed to topmost, pile crown stiffening device with basis of formation stake, described pile crown stiffening device is inserted into pile crown inside the foundation pile of the hollow shape arranged, then pour into a mould concrete and solidify, to strengthen the pile crown of foundation pile。
In addition, the lower support body of plate-like is formed with notch at predetermined intervals along edge, multiple bending part it is formed with between each notch, thus when inserting the pile crown stiffening device of foundation pile to hyollow foundation stake inside, the bending part of these notch and the close contact of foundation pile inner surface, upwards being inserted into bending, each notch adjacent in this insertion process is intimate contact with one another such that it is able to prevent the Concrete Leakage of follow-up cast simultaneously。
In addition, the end of the Access Division outwardly of upper support has the snap fit (snap fit of bending) of downward bending predetermined angular, this snap fit is connected in the outer surface of foundation pile, stably support to provide, wait it is thus possible to be likely to when preventing in advance due to follow-up cast concrete to be applied in impact and cause reinforcement reinforcing bar bias to move or the phenomenon of global displacement, construct safely and reliably。
By this structure, the pile crown stiffening device of foundation pile as constructed as above is inserted into easily pile crown inside the foundation pile arranged, pour into a mould concrete afterwards and solidify, to strengthen the pile crown of foundation pile, due to simple in construction, therefore, it is possible to easily manufacture in factory and assemble setting at the scene, it is possible to decrease cost, the pile crown stiffening device using simple in construction strengthens the pile crown of foundation pile, thus easily fabricated and setting。
And, owing to being formed with notch and bending part along the side of the lower support body of described pile crown stiffening device, therefore when pile crown stiffening device being inserted in the inside of foundation pile, adjacent notch narrows each other and is in close contact, the bending part of these notch is in close contact in foundation pile inner surface, upwards bending it is inserted into simultaneously, by these notch and bending part, lower support body and the close contact of foundation pile inner surface such that it is able to reduce the follow-up Concrete Leakage (spilling) to the internal cast of foundation pile to greatest extent。
In addition, upper support entirety is circular, and have towards three outwardly directed prominent Access Divisions, the reinforcement reinforcing bar of requirement is bundled on each limit bending to circular shape freely, it is thus possible to the field condition of the soft foundation strengthened as required increases and decreases reinforcement reinforcing bar freely, it is provided that the degree of freedom of arrangement of reinforcement and binding。
Additionally, 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, wait it is thus possible to be likely to when preventing in advance due to follow-up cast concrete to be applied in impact and cause reinforcement reinforcing bar bias to move or the phenomenon of global displacement, construct safely and reliably。
Accompanying drawing explanation
Fig. 1 is the axonometric chart that the first embodiment of the present invention relates to。
Fig. 2 is the axonometric chart of the upper support that relates to of the first embodiment of the present invention and lower support body。
Fig. 3 is that the pile crown stiffening device first embodiment of the present invention related to is inserted into the state diagram within stake。
Fig. 4 is the state that the arranges sectional view of the pile crown stiffening device that the first embodiment of the present invention relates to。
Fig. 5 is the top view of the pile crown stiffening device arranged according to the first embodiment of the present invention。
Fig. 6 is an illustration in the upper support of the first embodiment of the present invention arranging in many ways the state diagram of reinforcement reinforcing bar。
Fig. 7 is the axonometric chart that the second embodiment of the present invention 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 invention relates to。
Fig. 9 is the top view of the pile crown stiffening device arranged according to the second embodiment of the present invention。
Figure 10 is the state that the arranges sectional view of the pile crown stiffening device that the third embodiment of the present invention relates to。
Figure 11 is the rotating top view illustrating the reinforcement reinforcing bar suitable in the third embodiment of the present invention。
Accompanying drawing labelling
1: foundation pile
10: lower support body
11: notch
12: bending part
13: through hole
14: reinforcement
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 present invention relates to the pile crown stiffening device of the foundation pile set in various buildings and civil engineering in order to strengthen soft foundation, it possesses: lower support body, disc-shaped, and is formed with notch at predetermined intervals along edge；And upper support, overall in circular, and have towards three outwardly directed prominent Access Divisions, wherein, these upper support and lower support body up and down across predetermined distance, and it is 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 predetermined distance binding for surrounding multiple ring-type stirrups of reinforcement reinforcing bar, and upper support bundled integratedly be fixed on topmost, the thus pile crown stiffening device of formation base stake, and the pile crown stiffening device of this foundation pile is inserted into easily pile crown inside the hollow shape foundation pile arranged, follow-up cast concrete also solidifies, to strengthen the pile crown of foundation pile, due to simple in construction, therefore, it is possible to easily manufacture in factory and assemble at the scene, cost can be reduced, strengthen the pile crown of foundation pile simply。
The plate-like lower support body of the present invention possessing configuration as described above is formed with notch at predetermined intervals along edge, multiple bending part it is formed with between each otch, thus when inserting the pile crown stiffening device of foundation pile to hyollow foundation stake inside, the bending part of these notch is in close contact and bending insertion with foundation pile inner surface, each adjacent notch is intimate contact with one another in the process inserted inside foundation pile such that it is able to 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, wait it is thus possible to be likely to when preventing in advance due to follow-up cast concrete to be applied in impact and cause reinforcement reinforcing bar bias to move or the phenomenon of global displacement, construct safely and reliably。
Below, with reference to illustrating that the accompanying drawing of specific embodiments of the invention is described in detail。
First embodiment
As it is shown in figure 1, the pile crown stiffening device of the foundation pile of the first embodiment of the present invention mainly includes lower support body 10, upper support 20 and reinforcement reinforcing bar 30, it is described in detail。First, as shown in (A) of Fig. 2, 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, in order to 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 more than being used for arranging the internal diameter of the foundation pile 1 of 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 within foundation pile 1 inserts with state intimate contact with one another, and bending part 12 internally bending (to the upper direction bending of the foundation pile inserted by force) such that it is able to make the state that the inner peripheral surface of lower support body 10 and foundation pile 1 is in close contact completely be readily inserted in 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 reinforcement diameter with 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, so that reinforcement reinforcing bar 30 is erect with lower support body 10 for reference vehicular。
In addition, lower support body 10 is formed the reinforcement 14 of petal shape, this reinforcement 14 is formed from the central point of lower support body 10 to radiation direction, due to these reinforcements 14 be configured to lower portion supporter 10 uper side surface highlight, even if so the state that lower support body 10 is in close contact completely with the inner peripheral surface with foundation pile 1 is inserted by force, it is also possible to prevent lower support body 10 from deforming by these reinforcements 14 and indefinite form is damaged。
Secondly, as shown in (A) of Fig. 2, upper support 20 has the bar-shaped and overall in circular of circular cross-section, and has towards three outwardly directed prominent Access Divisions 22, is bundled the desired amount of reinforcement reinforcing bar 30 freely by reinforcing bar binding line 41 on each limit 21 bend to circular shape。
As shown in Figure 6, it is inserted in the reinforcement reinforcing bar 30 within foundation pile 1 to be arranged to various forms along the ring-type inner peripheral surface of this upper support 20, each limit 21 of namely bending to circular shape and supported, therefore, only the diameter of shaped upper portion supporter 20 is less than or equal to foundation pile 1 internal diameter, just can make maintenance predetermined distance between the reinforcement reinforcing bar 30 within foundation pile 1 and the inwall of foundation pile 1, thereby, it is possible to the concrete thickness (t) poured into a mould when guaranteeing follow-up concrete cast fully and fill。
As shown in FIG. 4 and 5, when upper support 20 formed as discussed above is arranged on foundation pile 1 top, each Access Division 22 is outwardly, and its length is more prominent relative to the internal diameter of foundation pile 1, due to this structure, when arranging pile crown stiffening device later, each Access Division 22 is firmly connected in the upper end of foundation pile 1 while keeping triangle, thus the pile crown stiffening device of foundation pile does not sink further inside foundation pile 1 and stably supported。
In addition, as shown in Figure 5, upper support 20 is overall in circular, and have towards three outwardly directed prominent Access Divisions 22, it is formed with, between these Access Divisions 22 outwardly, the limit 21 bending to circular shape, the reinforcement reinforcing bar 30 of requirement can be configured along these each limits 21 with the interval (intensive or loose wait for arbitrary interval) across regulation, bundle reinforcement reinforcing bar 30 and upper support 20 with reinforcing bar binding line 41 afterwards, thus assembling upper support 20 integratedly。
(A) of Fig. 6 represents the state configuring two reinforcement reinforcing bars 30 on each limit 21, (B) state configuring three reinforcement reinforcing bars 30 on each limit 21 is represented, (C) state configuring four reinforcement reinforcing bars 30 on each limit 21 is represented, the interval between reinforcement reinforcing bar 30 can be regulated, freely configuration reinforcement reinforcing bar 30 according to required reinforcement reinforcing bar 30 quantity。
As 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, it is welded and fixed the lower end of the lower support body 10 and reinforcement reinforcing bar 30 with the lower thickness suitable in the present invention, after making it be each one, uper side surface in lower support body 10 is also carried out secondary welding to weld these contacts site, so that reinforcement reinforcing bar 30 is erect with lower support body 10 for reference vehicular, consider this point, most preferably, material suitable in the lower support body 10 of the present invention 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, it forms one with foundation pile 1, and on the upside of the supporting surface of foundation pile 1, be formed as various forms according to supporting way, it is integrally formed into in-line by common reinforcing bar, by it is connected arranging with the floor reinforcement being disposed on plane earth, to strengthen the ground of broad flat as sports ground, it can be used in level and be laid on the floor reinforcement on top and have compared with wide interval thus the less ground (mass-type foundation ground) of bearing load。
Illustrate to utilize lower support body 10 configured as described above referring to figs. 1 through Fig. 6, upper support 20 and reinforcement 1 stiffening device of foundation pile of reinforcing bar 30, first, through hole 13 in lower support body 10 is inserted into the bottom of each reinforcement reinforcing bar 30, afterwards, it is welded and fixed each reinforcement reinforcing bar 30 exposed with lower support body 10 to form one, uper side surface in lower support body 10 also welds the position contacted with reinforcement reinforcing bar 30, so that reinforcement reinforcing bar 30 is erect with lower support body 10 for reference vehicular, it is configured to upper support 20 afterwards separate suitable distance from the upside of lower support body 10, the reinforcement reinforcing bar 30 on each limit 21 bending to circular shape that predetermined distance is arranged on described upper support 20 and upper support 20 is bundled afterwards with reinforcing bar binding line 41, so that upper support 20 is integrally fixed, thus may be constructed the basic configuration of the pile crown stiffening device of the foundation pile of the present invention, if bundling 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 the foundation pile of the more firmly present invention。
The pile crown stiffening device of the foundation pile of the present invention configured as described above the state to resolve into described lower support body 10, upper support 20 and reinforcement reinforcing bar 30 etc. respectively can be carried to the position (scene) carrying out operation from factory etc., after needing the scene carrying out foundation pile 1 reinforcement operation to carry out suitable welding, simply assemble with reinforcing bar binding line, or after described assembly is manufactured the finished goods of pile crown stiffening device of foundation pile by manufacturer, it is carried to and on-the-spot is 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 piling machine squeezing into foundation pile at soft foundation, foundation pile 1 is squeezed into after enough deep desired depth, the upper end protruding from ground foundation pile 1 is arranged, the top protruding from the foundation pile 1 on ground and ground is made to keep suitably height, the lower support body 10 of the internal pile crown stiffening device inserting foundation pile of backward each foundation pile 1, as shown in Figure 4, gap between each notch 11 adjacent one another are while being bent over by bending part 12 between each notch 1 is diminished, thus being 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 the pile crown at foundation pile 1 is stably supported, as shown in Figure 3 to Figure 4, the pile crown stiffening device of the foundation pile of the present invention stably can be set on foundation pile 1。
Now, owing to the diameter of lower support body 10 is more than the internal diameter of foundation pile 1, when therefore inserting lower support body 10 to foundation pile 1 is internal in the manner as described above, each notch 11 of lower support body 10 is by bending part 12 bending to the close contact of foundation pile 1 inner surface, thus lower support body 10 can be stably inserted in the foundation piles 1 uneven, rough such as or side uneven in inner surface be prominent, the interior surface state of the corresponding foundation pile 1 of each notch 11, is inserted in the way of bending by close contact。
And, on the downside of the inner space of the foundation pile 1 of the airtight pile crown stiffening device being provided with foundation pile as mentioned above of lower support body 10, now, pour into a mould concrete to foundation pile 1 is internal and solidifies, thus operation strengthened by the pile crown completing foundation pile when 1 inside of foundation pile is provided with reinforcement reinforcing bar 30, thus, the concrete poured into a mould afterwards is put to the top of lower support body 10, and owing to the edge of lower support body 10 is in chimerism, namely by notch 11 and the upper and lower space of the closely spaced one-tenth of bending part 12, it is thus possible to prevent the phenomenon of the bottom seepage of the concrete lower portion supporter 10 of cast。
So, the direction consistent with ground that the reinforcement reinforcing bar 30 of the vertical direction prominent with the top of the foundation pile 1 strengthened to pile crown is vertical arranges floor reinforcement (not shown), and be securely fixed in the in-line reinforcement reinforcing bar 30 in upper support 20 by reinforcing bar binding line and do not move about and keep steady status, to pouring into a mould foundation ground concrete after its intensive connection, laying floor reinforcing bar, thus completing 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 invention generally comprises lower support body 10, upper support 20 and reinforcement reinforcing bar 30, and this point is roughly the same with first embodiment。But, maximum being characterized in that of this embodiment, 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 the pile crown stiffening device of the present invention to foundation pile 1 inside, the Access Division 22 of upper support is by playing once stable supporting role 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 being likely to when can prevent in advance due to follow-up cast concrete be applied in the phenomenon impacting grade and cause the eccentric movement of reinforcement reinforcing bar 30 or global displacement, construct safely and reliably。
3rd embodiment
As shown in figs.10 and 11, the pile crown stiffening device of the foundation pile of the third embodiment of the present invention illustrates another embodiment of reinforcement reinforcing bar 30, in this embodiment use entirety in in-line but twice bending of middle position or inclination flexure type reinforcing bar, namely haveShape orThe reinforcing bar of shape。
This embodiment is applicable to following situation: be disposed in the flat floor reinforcement comparatively dense on the pile crown stiffening device top of the foundation pile of the present invention due to level, interference phenomenon (interference phenomenon when reinforcement reinforcing bar and intensive floor reinforcement arrangement of reinforcement) is there is when causing with reinforcement reinforcing bar 30 arrangement of reinforcement, shown in (A) part of Figure 10 and (A) part of Figure 11, 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 rotates (rotating the length being equivalent to bending centered by the lower end of reinforcement reinforcing bar) by predetermined radius, it is possible to avoid the interference between reinforcement reinforcing bar 30 and floor reinforcement。
Thus, (A) part of Figure 11 is for illustrating the radius of turn of reinforcement reinforcing bar 30, this flexure type reinforcement reinforcing bar 30 can the predetermined radius to be equivalent to the position that dotted line represents rotate, therefore, common building or the building structure etc. of load it are subject to such 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 bigger load at an upper portion thereof simultaneously, it is made to rotate to prevent each reinforcing bar interfering with each other, thus, can reduce interfering with each other with the floor reinforcement that horizontal direction arranges to greatest extent, various construction can be carried out。
As implied above, the pile crown stiffening device of the foundation pile of the present invention is possible not only in factory integrally manufactured, can also 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, the pile crown stiffening device also being able to prevent foundation pile is eccentric mobile up and down, so that the pile crown strengthened condition of foundation pile is stable, and relative to prior art, the structure of upper support is extremely simple, thus being easier to produce, assemble and arrange the pile crown stiffening device of foundation pile。
Additionally, the rounded cross section of upper support is bar-shaped and overall in circular, and have towards three outwardly directed prominent Access Divisions, thus its size, weight and material can be reduced while keeping intensity。
Further, by the notch of described lower support body and bending part, foundation pile inner space is separated with lower support body for benchmark and completely cuts off into upper and lower space by lower support body completely, thus also being able to prevent Concrete Leakage (leaking) after cast concrete, it is thus possible to ensure the concrete quality of cast, and keep intensity。The foundation pile of the pile crown stiffening device of the foundation pile of applicable present invention mentioned above is not limited to steel-pipe pile or prestressed high strength concrete (PHC:PretentionedspunHighstrengthConcretepiles) pile tube, it is possible to suitable in arbitrary foundation pile。
In addition; the present invention is not limited to foregoing illustrative specific embodiment; those skilled in the art can within the scope of the technological thought that the present invention expresses; each element is carried out various suitable design alteration and amendment, and this simple design alteration falls within protection scope of the present invention。
Claims (5)
1. a pile crown stiffening device for foundation pile, described foundation pile is used for strengthening soft foundation, it is characterised in that possess:
Lower support body, disc-shaped, and notch it is formed with at predetermined intervals along edge；
Upper support, overall have towards three outwardly directed prominent Access Divisions in circular, and using the fixed part as reinforcement reinforcing bar of each circular arc limit between these Access Divisions；
Multiple bar-shaped reinforcement reinforcing bars；And
Multiple ring-type stirrups,
Wherein, described upper support and lower support body are in the vertical direction across predetermined distance, and it is 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 predetermined distance binding for surrounding multiple ring-type stirrups of reinforcement reinforcing bar, and with reinforcing bar binding line, upper support is integrally fixed to topmost, pile crown stiffening device with basis of formation stake
Described pile crown stiffening device is inserted into pile crown inside the foundation pile of the hollow shape arranged, then pours into a mould concrete and solidify, to strengthen the pile crown of foundation pile。
2. the pile crown stiffening device of foundation pile according to claim 1, it is characterised in that
Upper support entirety is circular, and has towards three outwardly directed prominent Access Divisions, 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, so that described upper support is supported by foundation pile。
3. the pile crown stiffening device of foundation pile according to claim 1, it is characterised in that
Described lower support body is disc-shaped, and diameter is more than the internal diameter of foundation pile, and it is formed with notch along edge across predetermined distance, multiple bending parts of upwards bending it are formed with between each notch, when being inserted in hyollow foundation stake and being internal, described notch and bending part are bent over being inserted into inside foundation pile with the state being in close contact with foundation pile inner surface, 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, it is characterised in that
Being formed with the through hole arranged across predetermined distance inside the notch of described lower support body, the diameter of this through hole is less than the diameter of reinforcement reinforcing bar, in order to reinforcement is welded and fixed with end reinforced with end reinforced when exposing reinforcement,
Being also equipped with reinforcement, the uper side surface of this reinforcement lower portion supporter highlights, and is formed from the central point of lower support body along radiation direction,
When lower support body is inserted in the inside of foundation pile by force, prevent lower support body deformability and indefinite form damaged by this reinforcement。
5. the pile crown stiffening device of foundation pile according to any one of claim 1 to 4, it is characterised in that
Described reinforcement reinforcing bar is, entirety is in-line and forms twice bending or inclination in middle positionShape orThe flexure type reinforcing bar of shape, thus allowing 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 |
|---|---|---|---|
| CN201410707587.XA CN105696548A (en) | 2014-11-27 | 2014-11-27 | Pile head reinforcing device for foundation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707587.XA CN105696548A (en) | 2014-11-27 | 2014-11-27 | Pile head reinforcing device for foundation pile |
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| Publication Number | Publication Date |
|---|---|
| CN105696548A true CN105696548A (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410707587.XA Pending CN105696548A (en) | 2014-11-27 | 2014-11-27 | Pile head reinforcing device for foundation pile |
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| CN106759310A (en) * | 2017-01-14 | 2017-05-31 | 山东飞越钢结构工程有限公司 | A kind of quick slip casting brace foundation device of modularization and grouting method |
| CN107214843A (en) * | 2017-07-06 | 2017-09-29 | 中建八局第三建设有限公司 | One kind is exempted to cut pile crown type precast square pile constructing device and its construction method |
| CN113089658A (en) * | 2021-05-21 | 2021-07-09 | 华能秦煤瑞金发电有限责任公司 | Built-in tubular pile connecting device |
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| CN113089658A (en) * | 2021-05-21 | 2021-07-09 | 华能秦煤瑞金发电有限责任公司 | Built-in tubular pile connecting device |
| CN113089658B (en) * | 2021-05-21 | 2021-12-07 | 华能秦煤瑞金发电有限责任公司 | Built-in tubular pile connecting device |
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Application publication date: 20160622 |