CN217231789U - Structure for preventing hole wall from collapsing in reinforced concrete cast-in-place pile - Google Patents
Structure for preventing hole wall from collapsing in reinforced concrete cast-in-place pile Download PDFInfo
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- CN217231789U CN217231789U CN202220601724.1U CN202220601724U CN217231789U CN 217231789 U CN217231789 U CN 217231789U CN 202220601724 U CN202220601724 U CN 202220601724U CN 217231789 U CN217231789 U CN 217231789U
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Abstract
The utility model relates to a prevent structure that pore wall collapses in reinforced concrete bored concrete pile, include: main muscle, strengthening rib, stirrup and reinforcing bar net piece, the strengthening rib is the ring form, main muscle with strengthening rib vertically in the direction align to grid in the outside of strengthening rib, form round cage form, the stirrup sets up in the main muscle outside, is the heliciform along the length direction of main muscle and encircles, main muscle, strengthening rib and stirrup constitute the steel reinforcement cage jointly, the diameter ratio bored concrete pile hole's of steel reinforcement cage diameter is 10cm little, the stirrup all welds firmly with every nodical of main muscle, the stirrup is fixed at two adjacent solder joint intervals on same main muscle, the reinforcing bar net piece ligature is outside the steel reinforcement cage. The utility model discloses a steel reinforcement cage and reinforcing bar net piece are strutted to bored concrete pile hole formation, can prevent that the pore wall from collapsing, droing, produce the sediment at the bottom of the stake, simple structure, installation, low cost of being convenient for also have better economic benefits when promoting construction quality.
Description
Technical Field
The utility model relates to a pile foundation construction technical field among the geotechnical engineering especially relates to a prevent structure that the pore wall collapses in reinforced concrete bored concrete pile.
Background
The cast-in-place pile of reinforced concrete is the most common method in the construction of pile foundation in China, firstly, the cast-in-place pile hole is drilled on the construction site, and after the required depth is reached, the prefabricated reinforcement cage is placed in the construction site and the concrete is poured. Many times can take place in the concrete bored concrete pile work progress some pore walls and collapse, drop, produce pile bottom sediment, and thick meeting direct influence pile foundation quality of sediment at the bottom of the pile reduces single pile bearing capacity, and increase pile body settlement displacement, the existence of pile body defect can change the normal working property of pile foundation to produce potential danger to the basis, it is especially serious to the bearing pile influence.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problem of the prior art, the utility model provides a prevent structure that the pore wall collapses in reinforced concrete bored concrete pile solves in the concrete bored concrete pile work progress pore wall and collapses, drops, produces pile foundation sediment, influences the problem of pile foundation quality, promotes pile foundation construction quality, especially guarantees the pile foundation bearing capacity of end-bearing pile.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a structure for preventing collapse of a bore wall in a reinforced concrete bored pile, comprising:
the main reinforcement, the reinforcing rib, the stirrup and the reinforcing mesh;
the reinforcing ribs are circular, and the main ribs are uniformly arranged on the outer sides of the reinforcing ribs in the direction perpendicular to the reinforcing ribs to form a circular cage shape;
the relationship between the distance L of the circular rings formed by two adjacent reinforcing ribs and the diameter d2 of the reinforcing ribs is as follows: l is 100 × d2,
wherein, the maximum L is not more than 200cm, and the units of L and d2 are both cm;
the stirrups are arranged on the outer sides of the main reinforcements and spirally surround along the length direction of the main reinforcements;
the main reinforcement, the reinforcing ribs and the stirrups form a reinforcement cage together;
the diameter D2 of the reinforcement cage is 10cm smaller than the diameter D of the cast-in-place pile hole;
each intersection point of the stirrup and the main reinforcement is welded firmly;
the distance between two adjacent welding points of the stirrup on the same main reinforcement is fixed and is 10 cm;
and the reinforcing mesh is bound outside the reinforcing cage.
Optionally, the relationship between the number M of the main ribs and the circumference s of the ring formed by the reinforcing ribs is as follows: m is equal to s/10, and M is equal to s/10,
wherein, s is pi D1, D1 is the outer diameter of the ring formed by the reinforcing ribs, and the units of s and D1 are cm;
if s cannot be evenly divided by 10, determining the number M of the main ribs by adopting a further method;
the length of the main reinforcement is the sum of the pile length and the pile head anchoring length.
The main muscle is used for the main support and the atress of steel reinforcement cage, can adopt the main muscle of different quantity according to construction demand, the soil property condition of difference, and main muscle align to grid becomes the round cage form, and the even support atress that can be better adopts and advances a law to add a main muscle more, and the even setting of arranging in the strengthening rib outside can guarantee the holistic support atress of steel reinforcement cage.
Optionally, the intersection points of the reinforcing ribs and the main ribs are welded by arc welding.
The strengthening rib sets up in the inside of steel reinforcement cage, and the direction of strengthening rib is perpendicular with main muscle, and the strengthening rib is the ring, and the ring that the strengthening rib formed can play the effect of even outrigger main muscle, and the interval of two adjacent rings is fixed, can guarantee the ring to the balance of main muscle monolithic bracing atress, the ring can be more stable through welding with main muscle is connected.
Optionally, the relationship between the diameter d3 of the stirrup and the diameter d2 of the reinforcing rib is as follows:
d3＝d2。
the diameter of strengthening rib is the same with the diameter of stirrup, and the strengthening rib forms the support to the steel reinforcement cage with the stirrup respectively from inside and outside the steel reinforcement cage, and the diameter of strengthening rib and stirrup is the same when making the unloading of steel reinforcement cage can save the preparation time.
Optionally, the stirrups are smooth round steel bars.
The stirrup encircles and sets up in the steel reinforcement cage outside, compares ribbed steel bar, selects smooth round steel bar can hoist and mount the steel reinforcement cage in the construction operation and transfer the time reduce resistance.
Optionally, the reinforcing mesh is made of 2mm steel wires, and the reinforcing mesh is bound to the outer side of the stirrup to cover the whole reinforcing cage;
the grid of the steel mesh is square, and the side length of the square is 5-15 mm.
Preferably, the mesh size of the reinforcing mesh is 10mm × 10 mm.
The reinforcing mesh piece made of 2mm steel wires is light in structure, convenient to install and low in cost, the meshes of the reinforcing mesh piece are square, and the appropriate mesh size can be selected according to soil conditions and construction requirements.
Optionally, the length of the reinforcing mesh is 2m, and the width of the reinforcing mesh is equal to the perimeter of the cross section of the reinforcing cage.
Optionally, when two adjacent steel mesh sheets are bound, an overlapping coverage area with the size of 10cm is arranged at the edge.
Optionally, the intersection points of the reinforcing mesh sheets, the main reinforcements and the stirrups are firmly bound by using galvanized binding wires.
Overlapping coverage areas with the size of 10cm are arranged at the edges of the two adjacent reinforcing steel mesh sheets and are bound by adopting galvanized binding wires, so that the phenomenon that the hole wall collapses and falls off to generate pile bottom sediment between the gaps of the two reinforcing steel mesh sheets can be effectively avoided.
(III) advantageous effects
The utility model discloses a prevent structure that pore wall collapses in reinforced concrete bored concrete pile, use the main muscle to support as main atress, the inside strengthening rib that is equipped with of steel reinforcement cage, outside cover has the stirrup, at the outside ligature one deck reinforcing bar net piece of steel reinforcement cage, steel reinforcement cage and reinforcing bar net piece form the support to bored concrete pile pore wall, the pore wall takes place to collapse when being used for preventing the operation of pouring, drop, produce pile bottom sediment, influence pile foundation quality problems, moreover, the steam generator is simple in structure, and is convenient for install, low cost, and can be according to the construction needs, main muscle quantity and the size of reinforcing bar net piece that selection needs such as soil property condition, promote pile foundation construction quality, especially, the pile foundation bearing capacity of end-bearing pile.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the structure and dimensions of the present invention.
[ description of reference ]
1: a main rib;
2: reinforcing ribs;
3: hooping;
4: and (4) reinforcing steel bar meshes.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Example (b):
as shown in fig. 1 and fig. 2, the structure for preventing the collapse of the hole wall in the cast-in-place reinforced concrete pile of the present invention includes:
the steel bar comprises a main bar 1, a reinforcing bar 2, a stirrup 3 and a steel bar mesh 4;
the reinforcing ribs 2 are annular, and the main ribs 1 are uniformly arranged on the outer sides of the reinforcing ribs 2 in the direction perpendicular to the reinforcing ribs 2 to form a circular cage shape;
the relationship between the distance L of the circular rings formed by two adjacent reinforcing ribs 2 and the diameter d2 of the reinforcing ribs 2 is as follows: l is 100 x d2,
wherein, the maximum L is not more than 200cm, and the units of L and d2 are both cm;
the stirrups 3 are arranged on the outer side of the main reinforcement 1 and spirally surround along the length direction of the main reinforcement 1;
the main reinforcement 1, the reinforcing ribs 2 and the stirrups 3 form a reinforcement cage together;
the diameter D2 of the reinforcement cage is 10cm smaller than the diameter D of the cast-in-place pile hole;
each intersection point of the stirrup 3 and the main reinforcement 1 is welded firmly;
the distance between two adjacent welding points of the stirrup 3 on the same main reinforcement 1 is fixed and is 10 cm;
and the reinforcing mesh 4 is bound outside the reinforcing cage.
For the sake of clarity of the drawing, only two ribs 2 are shown in fig. 1, and the other ribs 2 are omitted.
Optionally, the relationship between the number M of the main ribs 1 and the circumference s of the ring formed by the reinforcing ribs 2 is as follows: m is equal to s/10, and M is equal to s/10,
wherein, s is pi D1, D1 is the outer diameter of the ring formed by the reinforcing ribs 2, and the units of s and D1 are cm;
if s cannot be divided by 10, determining the number M of the main ribs 1 by adopting a further method;
the length of the main reinforcement 1 is the sum of the pile length and the pile head anchoring length;
the further method is as follows:
if s is 300, M is 30, and if s is 305, M is 31.
The diameter D2 of the reinforcement cage, the diameter D1 of a circular ring formed by the reinforcing ribs 2 and the diameter D1 of the main rib 1 are in a relation of: d2 ═ D1+2D 1;
wherein D2 is the external diameter of the reinforcement cage, D1 is the external diameter of the ring formed by the reinforcing ribs 2, and the units of D2, D1 and D1 are all cm.
Main muscle 1 is used for the main support and the atress of steel reinforcement cage, can adopt the main muscle 1 of different quantity according to construction demand, the soil property condition of difference, and main muscle 1 align to grid becomes the circle cage form, and the atress is supported in the uniformity that can be better, adopts and advances a law and add a main muscle 1 more, and the setting is arranged in 2 outsides of strengthening rib evenly, can guarantee the holistic support atress of steel reinforcement cage.
Optionally, the intersection point of the reinforcing rib 2 and the main rib 1 is welded by arc welding.
The reinforcing ribs 2 are arranged inside the reinforcement cage, the direction of the reinforcing ribs 2 is perpendicular to the main ribs 1, the reinforcing ribs 2 are circular rings, the circular rings formed by the reinforcing ribs 2 can play a role of uniformly and stably supporting the main ribs 1, the circular rings and the main ribs 1 can be more stably connected through welding, and meanwhile, the electric arc welding equipment is simple, convenient to maintain, flexible to operate, high in adaptability and wide in application range;
the strengthening rib 2 adopts the ring design, with the welding of main muscle 1, the interval L of two adjacent rings and the relation of the diameter d2 of strengthening rib 2 do: l is 100 × d2, wherein, L is not more than 2m at maximum, and the unit of L and d2 is cm;
each intersection point of the stirrup 3 and the main reinforcement 1 is welded firmly, and the distance between two adjacent welding points of the stirrup 3 on the same main reinforcement 1 is fixed to be 10 cm;
by adopting the design, the using amount of the steel bars can be reduced on the premise of meeting the stress requirement of the steel reinforcement cage, and certain economic benefit is achieved.
Optionally, the relationship between the diameter d3 of the stirrup 3 and the diameter d2 of the reinforcing bar 2 is as follows:
d3＝d2。
the diameter of strengthening rib 2 is the same with stirrup 3's diameter, and strengthening rib 2 forms the support to the steel reinforcement cage with stirrup 3 from inside and outside the steel reinforcement cage respectively, and the preparation time can be saved with stirrup 3's diameter the same when the unloading of preparation steel reinforcement cage strengthening rib 2.
Optionally, the stirrup 3 is made of a smooth steel bar.
Optionally, the steel mesh 4 is made of 2mm steel wires, and the steel mesh 4 is bound to the outer side of the stirrup 3 to cover the whole reinforcement cage;
the grid of the steel mesh 4 is square, and the side length of the square is 5mm-15 mm.
Preferably, the mesh size of the reinforcing mesh 4 is 10mm × 10 mm.
The reinforcing steel bar mesh 4 made of 2mm steel wires is light in structure, convenient to install and low in cost, the meshes of the reinforcing steel bar mesh 4 are square, and the appropriate mesh size can be selected according to soil conditions and construction requirements;
the reinforcing mesh 4 is used for preventing the hole wall from collapsing and falling off, and generating pile bottom sediment in the reinforcing cage or generating faults in the concrete pile, thereby influencing the pile forming quality of the concrete.
Optionally, the length of the reinforcing mesh 4 is 2m, and the width is equal to the perimeter of the cross section of the reinforcement cage.
Optionally, when two adjacent steel mesh sheets 4 are bound, an overlapping coverage area with the size of 10cm is arranged at the edge.
Optionally, the intersection points of the steel bar mesh 4, the main reinforcement 1 and the stirrups 3 are bound firmly by using galvanized binding wires.
Overlapping coverage areas with the size of 10cm are arranged at the edges of the two adjacent reinforcing steel mesh sheets 4, and are bound by adopting galvanized binding wires, so that the problem that the hole wall collapses and falls off to generate pile bottom sediment between the gaps of the two reinforcing steel mesh sheets 4 can be effectively avoided.
As described above, the present invention can be preferably realized.
Although the embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, and that such changes and modifications are to be considered as within the scope of the invention.
Claims (10)
1. A structure for preventing collapse of a bore wall in a reinforced concrete bored pile, comprising:
the steel bar net comprises main bars (1), reinforcing bars (2), stirrups (3) and steel bar nets (4);
the reinforcing ribs (2) are circular, and the main ribs (1) are uniformly arranged on the outer sides of the reinforcing ribs (2) in the direction vertical to the reinforcing ribs (2) to form a circular cage shape;
the relation between the distance L of the circular rings formed by two adjacent reinforcing ribs (2) and the diameter d2 of the reinforcing ribs (2) is as follows: l is 100 x d2,
wherein, the maximum L is not more than 200cm, and the units of L and d2 are both cm;
the stirrups (3) are arranged on the outer side of the main reinforcement (1) and spirally surround along the length direction of the main reinforcement (1);
the main reinforcement (1), the reinforcing ribs (2) and the stirrups (3) form a reinforcement cage together;
the diameter D2 of the reinforcement cage is 10cm smaller than the diameter D of the cast-in-place pile hole;
each intersection point of the stirrup (3) and the main reinforcement (1) is welded firmly;
the distance between two adjacent welding points of the stirrup (3) on the same main reinforcement (1) is fixed and is 10 cm;
and the reinforcing mesh (4) is bound outside the reinforcing cage.
2. The structure of claim 1,
the number M of the main ribs (1) and the circumference s of a circular ring formed by the reinforcing ribs (2) are in a relation of: m is equal to s/10, and M is equal to s/10,
wherein, s is pi D1, D1 is the outer diameter of the circular ring formed by the reinforcing rib (2), and the units of s and D1 are both cm;
if s cannot be divided by 10, determining the number M of the main ribs (1) by adopting a further method;
the length of the main reinforcement (1) is the sum of the pile length and the pile head anchoring length.
3. The structure of claim 1,
and the intersection points of the reinforcing ribs (2) and the main ribs (1) are welded by arc welding.
4. The structure of claim 1,
the diameter d3 of the stirrup (3) and the diameter d2 of the reinforcing rib (2) have the following relation:
d3＝d2。
5. the structure of claim 1,
the stirrups (3) adopt smooth round steel bars.
6. The structure of claim 1,
the steel bar net piece (4) is made of 2mm steel wires, and the steel bar net piece (4) is bound to the outer side of the stirrup (3) and covers the whole steel bar cage;
the grid of the steel bar mesh (4) is square, and the side length of the square is 5-15 mm.
7. The structure of claim 6,
the mesh size of the reinforcing mesh (4) is 10mm multiplied by 10 mm.
8. The structure of claim 6,
the length of the reinforcing mesh (4) is 2m, and the width of the reinforcing mesh is equal to the section perimeter of the reinforcing cage.
9. The structure of claim 8,
when two adjacent steel mesh sheets (4) are bound, the edge is provided with an overlapping coverage area with the size of 10 cm.
10. The structure of claim 9,
the steel bar net piece (4) is firmly bound with the main reinforcement (1) and the stirrup (3) at the intersection points by using galvanized binding wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220601724.1U CN217231789U (en) | 2022-03-18 | 2022-03-18 | Structure for preventing hole wall from collapsing in reinforced concrete cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220601724.1U CN217231789U (en) | 2022-03-18 | 2022-03-18 | Structure for preventing hole wall from collapsing in reinforced concrete cast-in-place pile |
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| Publication Number | Publication Date |
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| CN217231789U true CN217231789U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220601724.1U Active CN217231789U (en) | 2022-03-18 | 2022-03-18 | Structure for preventing hole wall from collapsing in reinforced concrete cast-in-place pile |
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| Country | Link |
|---|---|
| CN (1) | CN217231789U (en) |
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- 2022-03-18 CN CN202220601724.1U patent/CN217231789U/en active Active
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