CN114929969B - Modularized intelligent wall-protecting cast-in-place pile and construction process thereof - Google Patents
Modularized intelligent wall-protecting cast-in-place pile and construction process thereof Download PDFInfo
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- CN114929969B CN114929969B CN201980102779.9A CN201980102779A CN114929969B CN 114929969 B CN114929969 B CN 114929969B CN 201980102779 A CN201980102779 A CN 201980102779A CN 114929969 B CN114929969 B CN 114929969B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
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Abstract
The utility model provides a modularization intelligence dado bored concrete pile, includes dado, reinforcing bar and pouring concrete, the dado is upper and lower fretwork enclosure structure that the modularization was assembled, can embed intelligent monitoring equipment in the dado, puts into the reinforcing bar around its inner wall after the dado is installed, pours the concrete again and forms the bored concrete pile. The guard wall is clamped by a plurality of intelligent guard wall modules (10), each module is provided with a longitudinal clamping component and a transverse clamping component, and the guard wall is clamped by the longitudinal and transverse clamping components; the intelligent wall protection module (10) is clamped into a splicing mode comprising an alignment splicing mode, a staggered splicing mode and a spiral splicing mode. The modularized intelligent retaining wall has the advantages that the transportation and the manufacture of the retaining wall are simpler, the holes can be prevented from collapsing, the foundation bearing capacity is increased, meanwhile, the construction safety is improved through intelligent monitoring, the construction efficiency is further improved, the intelligent monitoring effect can be continued to the middle of the service life of the whole structure, and the economic value of the retaining wall is exerted to the maximum extent.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a rotary-digging bored pile and a construction process thereof.
Background
In the field of construction, large-diameter pile cast-in-place piles (with the diameter of more than 800) are generally classified into manual hollow cast-in-place piles and rotary-excavated bored piles according to the pore-forming mode of construction.
The manual hole digging filling pile is a pile formed by manually digging a pile hole, then placing a reinforcement cage and pouring concrete. The engineering is called manual hole digging pile for short. The method comprises the steps of rotary drilling bored concrete piles, constructing piles by a rotary drilling rig, then placing reinforcement cages, and pouring concrete to form piles, namely the rotary drilling bored concrete piles, wherein the rotary drilling bored concrete piles are called as the engineering short rotary drilling bored concrete piles.
The following are the advantages and disadvantages of manual excavation of the bored pile and rotary excavation of the bored pile.
1. Manual hollowing out filling pile
Disadvantages: 1) The manual excavation of the cast-in-place pile necessitates the setting of a concrete retaining wall during construction. A circle of protection wall is cast while digging, and the cast-in-situ permanent protection wall is formed. Pile wall protection function: preventing the collapse of the well pile in the process of excavation. 2) The wall guard is manually dug about 1m, the mould is supported, the steel bars are pricked, concrete is poured to form a circle of wall guard, then the wall guard is dug for 1m again, the mould is supported, the steel bars are pricked, a circle of wall guard is poured, and thus hole forming is repeatedly dug. The construction progress is slow, and formwork and ligature reinforcing bar, pouring concrete are troublesome, and the operation is extremely inconvenient in limited space. The pile foundation has low construction efficiency and long construction period. Taking a 10m long pile as an example, 10 days are required for one pile to excavate. 3) Deep well operation, in order to ensure the safety of constructors, special blast pipes and equipment are needed to arch oxygen for the constructors. Some underground special formations often contain CO, SO2, H2S, CO2 or other toxic gases, and acute poisoning accidents easily occur. 4) Separate lead wires are needed for the lighting, if the wires are poorly managed, there is a risk of electric shock in the construction. 5) The water level condition in the foundation pit cannot be accurately known, and excessive groundwater in the foundation pit can influence the strength and quality of poured concrete. 6) The deformation of the foundation pit cannot be known by the retaining wall, and whether the retaining wall is cracked or not is difficult to observe, so that the risk of whether the foundation pit collapses or not cannot be predicted. 7) Due to the defects, the pile length design during manual hole digging operation is not suitable for being more than 12 meters, and the operation space is not suitable for being less than 1.2 meters.
The advantages are that:
1) The bottom can be expanded to improve the bearing capacity of the pile foundation because people can go down to the bottom.
2) Because people can go down to the bottom, whether the pile foundation bottom enters the bearing layer is convenient for the manual observation, and whether the bearing layer mechanics requirement meets the design requirement is convenient for the observation and judgment.
3) Because people can go to the bottom, the people carries out fine clear bottom to the dregs that the lateral wall dropped in the bottom or bottom self in the work progress. The bottom sediment is cleared up and is favorable to improving the bearing capacity of stake and reducing the subsidence deformation of stake.
2. Rotary digging bored pile
When the soil quality is good in the long range of the pile, the rotary digging bored pile does not need a retaining wall,
mechanical positioning, drilling, lower reinforcement cage and concrete pouring of construction flow of wall-protection-free rotary digging pile
When the soil layer has poor mechanical properties in the long range of the pile, such as loose backfill soil, a sand layer and mucky soil, a steel casing is required.
Mechanical positioning of construction flow of rotary digging pile with steel retaining wall, drilling, placing steel sleeve, lower reinforcement cage, pouring concrete, and pulling out steel retaining wall when pouring concrete
Disadvantages:
1) The thickness of the sediment is larger, and the sediment is difficult to clean by self-cleaning of the machine because the sediment cannot be operated by a person, thereby meeting the requirements. According to the technical Specification of building pile foundation (JGJ 94-2008) 6.3.9' drilling holes to reach the designed depth, before pouring concrete, the thickness index of the sediment at the bottom of the holes should accord with the following regulations: 1 pair of end-bearing piles, which are not larger than 50mm;2 for friction piles, it should not be greater than 100 mm'
2) For end-bearing piles, the bearing capacity of the pile foundation cannot be improved through bottom expansion.
3) Under the condition of no retaining wall, the filling coefficient is large when the concrete is poured, and the concrete is wasted.
Filling coefficient is generally used for filling concrete into a filling pile of pile foundation engineering, and the filling coefficient of the concrete of the filling pile refers to the ratio of the actual filling concrete volume of a pile to the theoretical volume calculated according to the outer diameter of the pile.
Filling coefficient conversion formula:
filling coefficient = actual poured concrete quantity/(concrete quantity calculated according to design diagram)
The soil quality is 1.1 in general, the soft soil is 1.2-1.3, and the filling coefficient of piles in high backfill soil is even 1.8. The main reasons for filling coefficients greater than 1 are: 1, the concrete weight is larger than the surrounding soil, and the surrounding soil is extruded outwards during pouring, so that the foundation pit is naturally enlarged; 2, holes, cracks and the like exist on the side wall of the foundation pit to cause concrete loss; 3, hole collapse condition exists.
4) When no retaining wall exists, holes are easy to collapse and neck when piles are excavated, and pouring molding of pile foundations is affected.
5) If the steel retaining wall is adopted, the retaining wall has large size, inconvenient transportation, large occupied space of the complete retaining wall and low transportation efficiency.
The advantages are that:
1) And the mechanical drilling is carried out, so that the construction speed is high. Taking 10m long piles as an example, 8 piles can be excavated in one day.
The foundation pit is not required to be laid by constructors, and the construction is safe.
The invention modularizes the traditional integral retaining wall, and improves the efficiency of producing, transporting and constructing the retaining wall. The traditional retaining wall generally only plays roles of preventing holes from collapsing under stress and improving basic bearing force, and the intelligent detection system is innovatively integrated in the modularized retaining wall, so that the retaining wall not only plays a role in stress, but also performs various safety detections at any time in construction, and the construction is more standard, safe, simple and reliable. The traditional wall protection monitoring system only plays a role in the construction process, but the function of the wall protection monitoring system can continuously play a role in the use process of the building after completion, real-time monitoring is provided for the safety of the structure, the most direct monitoring data is provided for structural personnel when structural problems occur so as to solve the problems, and meanwhile, structural research data under various complete real environments are provided for researchers for theoretical research and the like. The modularized intelligent wall protector is industrially produced, and has high production precision and high production speed. The modularized intelligent wall protector is assembled mechanically, so that a formwork is not required, concrete for the wall protector is not required to be poured, and time and labor are saved. The modularization of the retaining wall ensures that the transportation waste space is less, the transportation is simple and convenient, and the transportation efficiency is high. Whether a manual hole digging or mechanical drilling mode is adopted, the modularized intelligent retaining wall not only prevents hole collapse and increases the bearing capacity of a foundation, but also better ensures the construction safety through intelligent monitoring, and the construction efficiency is further improved; the traditional retaining wall loses the function after the construction is completed, and does not have any function. The intelligent monitoring function of the invention can be prolonged to the service life of the whole structure, and the economic value of the wall protection is exerted to the maximum extent.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art. A modularized intelligent wall-protecting cast-in-place pile and its construction process are disclosed. The technical scheme of the invention is as follows:
the utility model provides a modularization intelligence dado bored concrete pile, includes dado, reinforcing bar and pouring concrete, the dado is the enclosure structure of upper and lower fretwork that the modularization was assembled, the reinforcing bar sets up around the dado inner wall, after the dado is installed, put into the reinforcing bar, pour concrete in the dado and form the bored concrete pile again, but the foundation ditch excavation manual work mechanical drilling, the dado is prefabricated through the block of a plurality of intelligent dado modules, every intelligent dado module is provided with vertical block part and horizontal block part, block into the dado through vertical block part and horizontal block part, the side of every intelligent dado module and front intermediate position are provided with first through-hole and second through-hole respectively, the first through-hole in the dado buries various intelligent monitoring equipment, intelligent monitoring equipment in the dado is used for monitoring the various circumstances of stake or ground at any time in construction and stake use; a second through hole in the retaining wall may extend through the spike to connect with the soil.
Further, the clamping, prefabricating and forming modes of the intelligent wall protection modules comprise an alignment splicing type, a staggered splicing type and a spiral splicing type, and when the intelligent wall protection modules are the alignment splicing type, the two ends of the upper intelligent wall protection module and the lower intelligent wall protection module are aligned; when the wall protection module is of a staggered type splicing type, the upper intelligent wall protection module and the lower intelligent wall protection module are aligned at intervals, and when the wall protection module is of a spiral splicing type, the intelligent wall protection modules are spliced through spiral winding.
Further, the horizontal block part includes fin and recess, and fin and recess set up respectively in intelligent dado module's both sides, and the fin of every intelligent dado module and the recess looks block of another intelligent dado module.
Further, the number of the convex ribs is 2, and the number of the grooves is 2.
Further, the vertical clamping component comprises an upper left buckling groove, a lower left buckling rib, an upper right buckling rib and a lower right buckling groove, wherein the upper left buckling groove is buckled on the lower left buckling rib of the other intelligent wall protection module, and the upper right buckling rib is buckled on the lower right buckling groove of the other intelligent wall protection module to be fixed up and down between the intelligent wall protection modules.
Furthermore, the screw holes of the retaining wall can extend out of the adjusting rods to form root piles, the thorns extend into surrounding soil layers, cement is poured outside the retaining wall to form the root piles, and the root piles are used for reinforcing connection with side wall soil.
Further, conventional equipment is embedded in the first through hole: comprising the following steps: the electric wire, air supply pipeline, the pumping pipeline, the electric wire is used for bottom illumination, and air supply pipeline is used for the ventilation in the well, and the pumping pipe can draw bottom ponding.
Further, after concrete is poured, the integrity of the pile can be detected by using a first through hole in the retaining wall and adopting an acoustic transmission method.
Further, still pre-buried smart machine has in the first through-hole, carries out intellectual detection system to the stake, and smart machine includes: the toxic gas early warning system is used for monitoring harmful gas in the well for 24 hours; the water level observation system is used for setting the water level observation system and monitoring the change of the underground water level at any time;
and various monitoring equipment systems for buildings or foundations such as a structural strain gauge, a seismic wave monitoring device, a foundation deformation observing device, an electronic sensing device and the like are further arranged in the first through hole, and the safety of an underground structure and the change of various foundations are monitored for 24 hours.
Furthermore, under the foundation condition of deep backfill, the outer surface of the intelligent wall protection module contacted with soil can be subjected to special treatment including coating, so that the outer surface is smooth, friction force is reduced, and negative friction resistance harmful to a foundation can be reduced for soil layers with larger negative friction lease such as new backfill.
Further, each intelligent dado module can adopt a solid structure or a hollow lattice structure.
Furthermore, the inner wall of the intelligent wall protection module can be extended with a steel bar positioning member, and the steel bar can be directly arranged on the positioning member.
The construction process of the intelligent wall protection cast-in-place pile comprises the following process steps:
1) When the foundation pit is excavated by adopting mechanical drilling:
firstly, a plurality of intelligent wall protection modules can be assembled into an intelligent wall protection by clamping through full mechanical automation, semi-mechanical or full manual operation according to construction conditions, and the wall protection comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the through holes of the intelligent guard wall;
positioning a mechanical drilling machine;
digging a foundation pit;
putting an intelligent protection wall;
placing reinforcing steel bars;
pouring concrete.
2) When the foundation pit is excavated manually:
positioning a foundation pit;
excavating an artificial foundation pit, excavating a certain distance, putting the artificial foundation pit into a module, clamping and assembling the artificial foundation pit into an intelligent retaining wall through semi-machinery or full manpower, then continuing excavating, and repeating circularly until a designed foundation bearing layer is reached, wherein the retaining wall comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the first through hole of the intelligent protection wall;
placing reinforcing steel bars;
pouring concrete.
The invention has the advantages and beneficial effects as follows:
first big advantage: when an artificial foundation pit excavation mode is adopted, the construction of the pile retaining wall does not need formwork supporting and concrete pouring, so that the construction of the retaining wall is simpler and more efficient, and the construction operation is more standard, safer, simpler and more reliable.
The second major advantage: when the foundation pit excavation mode of mechanical drilling is adopted, the transportation of the manufacture of the retaining wall is simpler and more efficient, the functions of preventing hole collapse and improving foundation bearing force are achieved under the stress, and meanwhile filling coefficients are reduced during pouring, so that the economic benefit is good.
Third great advantage: intelligent equipment can be embedded in the through holes of the modules to intelligently monitor the piles, so that the intelligent monitoring can better ensure the construction safety, and the construction efficiency is further improved; the intelligent monitoring function of the invention can be prolonged to the service life of the whole structure, and the function and economic value of the wall protection are exerted to the maximum extent.
Specific innovation point
1) The modularized retaining wall can prevent the foundation pit from collapsing, shrinking and the like.
2) The modularized wall guard is convenient for industrial production, and has high production precision and high production speed.
3) After the wall protection modularization, the transportation is simple and convenient, the transportation waste space is little, and the transportation efficiency is high. The wall protection module is assembled mechanically, so that time and labor are saved, and the efficiency is high.
4) And the filling coefficient of the pile is reduced, the filling coefficient can be basically controlled to be 1, and the concrete quantity is saved.
5) Constructors can go into the well to operate, the bearing capacity is improved through bottom expansion, the earth excavation quantity, the concrete pouring quantity and the steel bar quantity are reduced, and the economy of a longer pile foundation is greatly improved through bottom expansion. For example, example 1: the end bearing pile with the diameter of 900 is enlarged to 1500 at the bottom, the bearing capacity can be improved by 2.8 times, and the concrete is less increased.
Example 2: because the mechanical bored pile cannot expand the bottom, if the end bearing pile needs the diameter 1200 according to the calculated bottom, the diameter of the pile from top to bottom needs to be made into the diameter 1200; if the bottom can be expanded, the bottom diameter can be made 1200, the middle and upper diameters can be made 900, and for 20m pile length, the concrete can be saved by 35%.
6) Constructors can go into the well to operate, remove sediments, improve the bearing capacity of the pile foundation and reduce the sedimentation of the pile.
7) The thorns can extend out of the retaining wall and extend into surrounding soil layers, so that friction force is increased, connection with the side wall soil is enhanced, and pile bearing capacity is improved.
8) The steel bars can be directly clamped and installed on the necessary positioning component without binding and welding the steel bar cage in advance.
9) The hoop restraint function of the retaining wall can improve the shearing bearing capacity and the partial pressure strength of the concrete, thereby reducing or even eliminating the stirrups of the pile.
10 Under the condition of the foundation of deep backfill, the outer surface of the retaining wall module contacted with the soil can be coated or subjected to other special treatments, so that the outer surface is smooth, the friction force is reduced, and the negative friction harmful to the foundation is reduced.
11 The electric wires can be laid in the through holes of the protective wall for bottom illumination, so that the risk of leakage accidents is greatly reduced.
12 Air supply pipelines can be laid in the through holes of the protective walls and used for ventilation in the well, so that the work safety of constructors is ensured.
13 A toxic gas early warning system can be arranged in the through hole of the protective wall and used for monitoring harmful gas in the well for 24 hours, so that the safety guarantee of the well descending operation is improved.
14 A water level observation system can be arranged in the through hole of the retaining wall to monitor the change of the underground water level at any time.
15 The traditional large-diameter bored concrete pile foundation is subjected to pile body integrity detection no matter the pile is manually dug or rotationally dug, and the most widely detection method at present is pre-buried acoustic detection pipes and adopts an acoustic wave transmission method for detection. The larger the diameter of the pile, the more acoustic tubes buried, the more acoustic lines need to be detected. The double-tube can only have 1 sound line, 3 sound lines of 3 sound measuring tubes, and 6 sound lines of 4 sound measuring tubes. The more the sounding lines are, the more accurate the detection is, and the more true and reliable the detection result is. By adopting the modularized retaining wall, because the module is provided with holes, dozens of through holes can be formed along the periphery of the pile, and the number of the through holes is large. The pile integrity is detected without pre-burying the sounding pipe, and meanwhile, a plurality of sounding lines, which are tens of sounding lines, can be detected according to the requirement, and the detection precision and reliability can be improved at will.
16 The through hole of the modularized intelligent retaining wall is also provided with a structural strain gauge, earthquake wave monitoring equipment, foundation deformation observation equipment, electronic induction equipment and other monitoring equipment systems for buildings or foundations, and the safety of an underground structure and the change of various foundations are monitored for 24 hours.
17 The traditional retaining wall loses the function after the construction is completed and does not have any function. The function of the wall protection monitoring system can continuously play a monitoring role in the use process of the building after construction is finished, real-time monitoring is provided for the safety of the structure, the most direct monitoring data is provided for structural personnel when structural problems occur so as to solve the problems, and meanwhile, structural research data under various complete real environments are provided for researchers to use in theoretical research and the like. The invention makes the wall protection function and economic value play the most in the whole building construction and use process.
Drawings
FIG. 1 is a schematic view of the structure of a transverse clamping component of an intelligent dado module according to a preferred embodiment of the invention;
FIG. 2 is a schematic view of the structure of a longitudinal clamping component of the intelligent dado module according to the preferred embodiment of the invention;
FIG. 3 is a schematic view of an alignment splice intelligent retaining wall assembly according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of an assembled intelligent wall panel with staggered splice according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of an assembled spiral splice intelligent retaining wall according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view of an adjusting rod disposed in a screw hole of a retaining wall according to a preferred embodiment of the present invention;
fig. 7 is a schematic view of a rebar positioning component in accordance with a preferred embodiment of the present invention;
1-ribs; 2-grooves; 3-a first through hole; 4-upper left buckling groove; 5-left lower buckling rib; 6-right upper buckling rib; 7-a lower right buckling groove; 8-a steel bar positioning member; 9-screw holes; 10-intelligent wall protection module
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and specifically described below with reference to the drawings in the embodiments of the present invention. The described embodiments are only a few embodiments of the present invention.
The technical scheme for solving the technical problems is as follows:
the utility model provides a modularization intelligence dado bored concrete pile, includes dado, reinforcing bar and pouring concrete, the dado is the enclosure structure of upper and lower fretwork that the modularization was assembled, the reinforcing bar sets up around the dado inner wall, after the dado is installed, put into the reinforcing bar, pour concrete in the dado and form the bored concrete pile again, but the foundation ditch excavation manual work mechanical drilling, the dado is prefabricated through the block of a plurality of intelligent dado modules, every intelligent dado module is provided with vertical block part and horizontal block part, block into the dado through vertical block part and horizontal block part, the side of every intelligent dado module and front intermediate position are provided with first through-hole and second through-hole respectively, the first through-hole in the dado buries various intelligent monitoring equipment, intelligent monitoring equipment in the dado is used for monitoring the various circumstances of stake or ground at any time in construction and stake use; a second through hole in the retaining wall may extend through the spike to connect with the soil. .
Preferably, as shown in fig. 3-5, the mode of the snap-fit prefabrication molding of the plurality of intelligent wall protection modules comprises an alignment splicing mode, a staggered splicing mode and a spiral splicing mode, and when the mode is the alignment splicing mode, the two ends of the upper intelligent wall protection module and the lower intelligent wall protection module are aligned; when the wall protection module is of a staggered type splicing type, the upper intelligent wall protection module and the lower intelligent wall protection module are aligned at intervals, and when the wall protection module is of a spiral splicing type, the intelligent wall protection modules are spliced through spiral winding.
Preferably, as shown in fig. 1, the lateral clamping component includes a rib 1 and a groove 2, where the rib 1 and the groove 2 are respectively disposed at two sides of the intelligent dado module 10, and the rib 1 of each intelligent dado module 10 is clamped with the groove 2 of another intelligent dado module.
Preferably, the number of the ribs 1 is 2, and the number of the grooves 2 is also 2.
Preferably, as shown in fig. 2, the vertical clamping component includes an upper left buckling groove 4, a lower left buckling rib 5, an upper right buckling rib 6 and a lower right buckling groove 7, the upper left buckling groove 4 is buckled on the lower left buckling rib 5 of the other intelligent wall protection module, and the upper right buckling rib 6 is buckled on the lower right buckling groove 7 of the other intelligent wall protection module to fix the intelligent wall protection modules up and down.
Preferably, as shown in fig. 6, the screw hole 9 of the retaining wall may extend out of the adjusting rod to form a root pile, the adjusting rod extends into the surrounding soil layer, and cement is poured outside the retaining wall to form a root pile for reinforcing the connection with the side wall soil. The adjusting rod stretches into the surrounding soil layer, so that friction force is increased, connection with the side wall soil is enhanced, and pile bearing capacity is improved.
As shown in fig. 7, the inner wall of the intelligent dado module may be extended with a steel bar positioning member 8, and the steel bar may be directly installed on the positioning member. The intelligent wall protection module is arranged into a penetrating structure for accommodating the steel bars to penetrate, and is preferably a cylinder structure welded into a whole or in locking connection with the intelligent wall protection module.
Preferably, conventional equipment is pre-buried in the first through hole 3: comprising the following steps: the electric wire is used for bottom illumination, and the air supply pipeline is used for ventilation in the well.
Preferably, the first through hole 3 is further embedded with an intelligent device, and the intelligent device performs intelligent detection on the pile and comprises: the toxic gas early warning system is used for monitoring harmful gas in the well for 24 hours; the water level observation system is used for setting the water level observation system and monitoring the change of the underground water level at any time;
and a structural strain gauge, a seismic wave monitoring device, a basic deformation observation device and an electronic induction device are further arranged in the first through hole 3, so that the safety of the structure is monitored for 24 hours.
Preferably, under the condition of the foundation backfilled, the outer surface of the intelligent wall protection module contacted with soil can be subjected to special treatment including coating, so that the outer surface is smooth, the friction force is reduced, and the negative friction harmful to the foundation is reduced.
Preferably, each intelligent dado module can adopt a solid structure or a hollow lattice structure.
The construction process of the rotary-digging bored pile comprises the following process steps:
1) When the foundation pit is excavated by adopting mechanical drilling:
firstly, a plurality of intelligent wall protection modules can be assembled into an intelligent wall protection by clamping through full mechanical automation, semi-mechanical or full manual operation according to construction conditions, and the wall protection comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the through holes of the intelligent guard wall;
positioning a mechanical drilling machine;
digging a foundation pit;
putting an intelligent protection wall;
placing reinforcing steel bars;
pouring concrete.
2) When the foundation pit is excavated manually:
positioning a foundation pit;
excavating an artificial foundation pit, excavating a certain distance, putting the artificial foundation pit into a module, clamping and assembling the artificial foundation pit into an intelligent retaining wall through semi-machinery or full manpower, then continuing excavating, and repeating circularly until a designed foundation bearing layer is reached, wherein the retaining wall comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the first through hole of the intelligent protection wall;
placing reinforcing steel bars;
pouring concrete.
Preferably, the first through hole 3 is embedded with a pipeline: comprising the following steps: the electric wire is used for bottom illumination, and the air supply pipeline is used for ventilation in the well.
Preferably, the smart device includes: the toxic gas early warning system is used for monitoring harmful gas in the well for 24 hours; the water level observation system is used for setting the water level observation system and monitoring the change of the underground water level at any time;
and a structural strain gauge, seismic wave monitoring equipment, basic deformation observation equipment and electronic induction equipment are arranged in the through hole, so that the safety of the structure is monitored for 24 hours.
The above examples should be understood as illustrative only and not limiting the scope of the invention. Various changes and modifications to the present invention may be made by one skilled in the art after reading the teachings herein, and such equivalent changes and modifications are intended to fall within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a modularization intelligence dado bored concrete pile, includes dado, reinforcing bar and pouring concrete, the dado is the enclosure structure of upper and lower fretwork that the modularization was assembled, and the reinforcing bar sets up around the dado inner wall, and the dado is installed the back, puts into the reinforcing bar, pours concrete in the dado again and forms the bored concrete pile, its characterized in that, but foundation ditch excavation manual work mechanical drilling, the dado is through the prefabricated shaping of a plurality of intelligent dado module block, and every intelligent dado module is provided with vertical block part and horizontal block part, and through vertical block part and horizontal block part block synthetic dado, the side of every intelligent dado module and front intermediate position are provided with first through-hole and second through-hole respectively, and intelligent monitoring equipment has been buried to first through-hole in the dado, and intelligent monitoring equipment includes: the toxic gas early warning system is used for monitoring harmful gas in the well for 24 hours; the water level observation system is used for setting the water level observation system and monitoring the change of the underground water level at any time; the first through hole is also provided with a structural strain gauge, a seismic wave monitoring device, a basic deformation observing device and an electronic sensing device, and the safety of an underground structure and the change of various foundations are monitored for 24 hours; the second through hole in the retaining wall can extend out of the thorn-shaped object to be connected with the soil;
the screw holes of the retaining wall can extend out of the adjusting rods to form root piles, the adjusting rods extend into surrounding soil layers, cement is poured outside the retaining wall to form the root piles, and the root piles are used for reinforcing connection with side wall soil;
conventional equipment is embedded in the first through hole: comprising the following steps: the electric wire, air supply pipeline, the pumping pipeline, the electric wire is used for bottom illumination, and air supply pipeline is used for the ventilation in the well, and the pumping pipe can draw bottom ponding.
2. The modular intelligent wall-protecting cast-in-place pile according to claim 1, wherein the mode of the plurality of intelligent wall-protecting modules in the clamping prefabrication mode comprises an alignment splicing mode, a staggered splicing mode and a spiral splicing mode, and when the mode is the alignment splicing mode, the two ends of the upper intelligent wall-protecting module and the lower intelligent wall-protecting module are aligned; when the wall protection module is of a staggered type splicing type, the upper intelligent wall protection module and the lower intelligent wall protection module are aligned at intervals, and when the wall protection module is of a spiral splicing type, the intelligent wall protection modules are spliced through spiral winding.
3. A modular intelligent dado cast-in-place pile according to claim 2, wherein the lateral engagement means comprises ribs and grooves, the ribs and grooves being provided on both sides of the intelligent dado module respectively, the ribs of each intelligent dado module engaging with the grooves of the other intelligent dado module.
4. A modular intelligent dado cast-in-place pile according to claim 3, wherein the number of ribs is 2 and the number of grooves is also 2.
5. The modular intelligent wall cast-in-place pile according to claim 4, wherein the vertical clamping component comprises an upper left buckling groove, a lower left buckling rib, an upper right buckling rib and a lower right buckling groove, the upper left buckling groove is buckled on the lower left buckling rib of the other intelligent wall protection module, and the upper right buckling rib is buckled on the lower right buckling groove of the other intelligent wall protection module to fix the intelligent wall protection modules up and down.
6. A modular intelligent retaining wall cast-in-place pile according to claim 5, wherein the integrity of the pile is detected by sonic transmission using the first through-hole in the retaining wall after casting the concrete.
7. The modular intelligent retaining wall filling pile according to claim 6, wherein under the foundation condition of deep backfill, the outer surface of the intelligent retaining wall module contacted with soil can be coated, so that the outer surface is smooth, friction force is reduced, and negative friction harmful to the foundation can be reduced for soil layers with larger negative friction such as new backfill.
8. A modular intelligent dado cast-in-place pile according to claim 6, wherein each intelligent dado module is of solid construction or hollow lattice construction.
9. A modular intelligent retaining wall cast-in-place pile according to claim 8, wherein the intelligent retaining wall modules have reinforcing bar locating members extending from the inner walls thereof, the reinforcing bars being mountable directly on the locating members.
10. A construction process of the modular intelligent dado cast-in-place pile according to any one of claims 1-9, comprising the following process steps:
1) When the foundation pit is excavated by adopting mechanical drilling:
firstly, a plurality of intelligent wall protection modules can be assembled into an intelligent wall protection by clamping through full mechanical automation, semi-mechanical or full manual operation according to construction conditions, and the wall protection comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the through holes of the intelligent guard wall;
positioning a mechanical drilling machine;
digging a foundation pit;
putting an intelligent protection wall;
placing reinforcing steel bars;
pouring concrete;
2) When the foundation pit is excavated manually:
positioning a foundation pit;
excavating an artificial foundation pit, excavating a certain distance, putting the artificial foundation pit into a module, clamping and assembling the artificial foundation pit into an intelligent retaining wall through semi-machinery or full manpower, then continuing excavating, and repeating circularly until a designed foundation bearing layer is reached, wherein the retaining wall comprises an aligned splicing type, a staggered splicing type and a spiral splicing type;
embedding a series of pipelines and intelligent electronic equipment in the first through hole of the intelligent protection wall;
placing reinforcing steel bars;
pouring concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/123763 WO2021109144A1 (en) | 2019-12-06 | 2019-12-06 | Modular intelligent dado cast-in-place pile and construction process therefor |
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| CN114929969A CN114929969A (en) | 2022-08-19 |
| CN114929969B true CN114929969B (en) | 2023-08-18 |
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| CN114929969A (en) | 2022-08-19 |
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