CN212153481U - High-precision static load experimental engineering pile structure - Google Patents
High-precision static load experimental engineering pile structure Download PDFInfo
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- CN212153481U CN212153481U CN202020437873.XU CN202020437873U CN212153481U CN 212153481 U CN212153481 U CN 212153481U CN 202020437873 U CN202020437873 U CN 202020437873U CN 212153481 U CN212153481 U CN 212153481U
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Abstract
The utility model provides a high-precision static load experimental engineering pile structure, which comprises an outer protective cylinder, an inner protective cylinder and a reinforcement cage assembly; the inner protecting cylinder is sleeved in the outer protecting cylinder, and a gap is formed between the outer protecting cylinder and the inner protecting cylinder; the steel bar cage assembly is sleeved in the inner protecting cylinder, and the outer protecting cylinder, the inner protecting cylinder and the steel bar cage assembly are coaxially arranged; the outer protective cylinder, the inner protective cylinder and the steel bar cage assembly are buried below a soil layer, and the outer protective cylinder and the inner protective cylinder are located at the upper end of the steel bar cage assembly. The beneficial effects of this technical scheme are: through being provided with outer a section of thick bamboo and interior protective barrel and protect a section of thick bamboo and be formed with the clearance outside between a section of thick bamboo and the interior protective barrel, when backfilling at empty pile section, the backfill thing protects a contact with outer, rather than direct connection at the contact of steel reinforcement cage subassembly, can reduce the interact power between soil layer and the engineering stake from this to improve the precision of pressure-bearing static load experiment or resistance to plucking static load experiment testing result, eliminate the potential safety hazard.
Description
Technical Field
The utility model relates to a construction equipment technical field relates to an engineering pile structure, especially relates to an engineering pile structure that can improve the detection precision of static load experiment.
Background
In the process of urbanization, a large number of people gather in cities, so that land resources in the cities are increasingly scarce, people have to develop a vertical space, and a building extends in the vertical direction to improve the land utilization rate, so that high-rise buildings with basements are promoted.
In the process of building a high-rise building with a basement, engineering piles are required to be arranged on the ground, and the whole building is supported through the engineering piles. The construction process of the engineering pile is approximately as follows: the method comprises the steps of firstly carrying out foundation pit earthwork excavation on the ground, then forming an engineering pile in the excavated hole in a pouring mode or the like, and then carrying out a pressure-bearing static load experiment or an uplift static load experiment on the engineering pile according to the pile foundation detection standard requirement. And the construction can be further carried out only if the designed bearing capacity or the uplift resistance of the engineering pile reaches a certain numerical value.
A certain gap inevitably exists between the upper end of the engineering pile and the soil layer, and the gap is called a hollow pile section in the industry. In order to improve the strength, backfill materials such as empty pile sections and the like are required to be backfilled by using plain soil or cement stone powder slag after the engineering pile is poured, so that a soil layer and the engineering pile are connected into a whole, the interaction force between the soil layer and the engineering pile is increased, the interaction force can influence the detection result of a pressure-bearing static load or uplift static load experiment, a large error is introduced into the detection result, the engineering pile in a critical unqualified state under certain conditions can pass the detection, and great potential safety hazards are caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a high accuracy static test engineering pile structure, can reduce the interaction force between soil layer and the engineering stake to improve the precision of pressure-bearing static test or resistance to plucking static test testing result, eliminate the potential safety hazard.
The utility model provides a technical scheme that technical problem adopted as follows:
the utility model provides a high accuracy static load experiment engineering pile structure, includes:
an outer protective cylinder;
the inner protecting cylinder is sleeved in the outer protecting cylinder, and a gap is formed between the outer protecting cylinder and the inner protecting cylinder;
the steel bar cage assembly is sleeved in the inner protective cylinder, and the outer protective cylinder, the inner protective cylinder and the steel bar cage assembly are coaxially arranged;
the outer protective cylinder, the inner protective cylinder and the steel bar cage assembly are buried below a soil layer, and the outer protective cylinder and the inner protective cylinder are located at the upper end of the steel bar cage assembly.
Compared with the prior art, the technical scheme has the beneficial effects that: through being provided with outer a section of thick bamboo and interior protective barrel and protect a section of thick bamboo and be formed with the clearance outside between a section of thick bamboo and the interior protective barrel, when backfilling at empty pile section, the backfill thing protects a contact with outer, rather than direct connection at the contact of steel reinforcement cage subassembly, can reduce the interact power between soil layer and the engineering stake from this to improve the precision of pressure-bearing static load experiment or resistance to plucking static load experiment testing result, eliminate the potential safety hazard.
Further, the outer protective cylinder and the inner protective cylinder are round steel pipes;
the diameter of the outer protecting cylinder is larger than that of the inner protecting cylinder, and the diameter of the inner protecting cylinder is larger than that of the reinforcement cage assembly;
the length of the outer protecting cylinder is smaller than that of the inner protecting cylinder, and the length of the inner protecting cylinder is smaller than that of the reinforcement cage assembly; the upper ends of the outer protective cylinder, the inner protective cylinder and the reinforcement cage assembly are mutually flush.
The beneficial effect who adopts above-mentioned scheme is: the upper end of protecting a section of thick bamboo, protecting a section of thick bamboo and steel reinforcement cage subassembly in, outward protects a section of thick bamboo, protects a section of thick bamboo and steel reinforcement cage subassembly in, and the length that protects a section of thick bamboo, interior section of thick bamboo and steel reinforcement cage subassembly outward increases progressively in proper order, can prop up through the soil layer and protect a section of thick bamboo in, protects a section of thick bamboo unsettled in effectively preventing, prevents that interior protection.
Further, the steel bar cage assembly comprises a main steel bar, a spiral stirrup and a stiffening hoop;
the main reinforcements are arranged on the outer side of the spiral stirrup along the radial direction of the spiral stirrup, and the stiffening hoops fix the main reinforcements on the spiral stirrup;
concrete is poured on the main reinforcement, the spiral stirrups and the stiffening hoops, and the concrete is a mixture of sand, stone, cement and water.
The beneficial effect who adopts above-mentioned scheme is: the main reinforcement, the spiral stirrups and the stiffening hoops form a reinforcement cage assembly, and concrete formed by a mixture of sand, stone, cement and water is poured on the reinforcement cage assembly, so that the strength of the engineering pile can be improved.
Furthermore, a plurality of separation blocks are arranged on the outer side of the inner protective cylinder, the separation blocks are located in a gap between the outer protective cylinder and the inner protective cylinder, and the separation blocks are used for preventing the outer protective cylinder and the inner protective cylinder from being attached to each other.
The beneficial effect who adopts above-mentioned scheme is: the outer side of the inner protective cylinder is provided with a plurality of separation blocks, the separation blocks are located in a gap between the outer protective cylinder and the inner protective cylinder, and in the construction process, if the inner protective cylinder and the outer protective cylinder are not coaxial due to careless operation, the separation blocks can effectively prevent the inner protective cylinder and the outer protective cylinder from being attached together.
Furthermore, the separation blocks are made of I-shaped steel and are fixedly arranged on the outer side of the inner casing in a welding mode.
The beneficial effect who adopts above-mentioned scheme is: adopt I-steel as the spacer block, and will separate the fixed outside that sets up in interior casing of spacer block through the welded mode, have draw materials advantages such as simple, construction cost is low and joint strength height.
Furthermore, an annular water stop belt is arranged on the outer side of the inner protective barrel and is arranged at the lower end of the inner protective barrel in a surrounding mode, and the annular water stop belt is used for preventing rainwater from seeping downwards;
the inner side of the annular water stop is fixedly arranged on the outer side of the inner protective tube, and the outer side of the annular water stop abuts against the inner side of the outer protective tube.
The beneficial effect who adopts above-mentioned scheme is: an annular water stop is arranged on the outer side of the inner protective tube, and the outer side of the annular water stop is abutted against the inner side of the outer protective tube, so that rainwater can be effectively prevented from seeping.
Further, the annular water stop is made of rubber materials and fixedly arranged on the outer side of the inner casing in a viscose mode.
The beneficial effect who adopts above-mentioned scheme is: adopt rubber materials as annular waterstop for annular waterstop can take place deformation by the atress, thereby guarantees that annular waterstop and interior casing and outer protective barrel can both keep in close contact with.
Furthermore, an annular sealing cover plate is arranged on the outer side of the inner protective cylinder, the annular sealing cover plate is arranged at the upper end of the inner protective cylinder in a surrounding manner, and the annular sealing cover plate is used for preventing rainwater from entering a gap between the outer protective cylinder and the inner protective cylinder;
the inner side of the annular sealing cover plate is fixedly arranged on the outer side of the inner protective cylinder, and the outer side of the annular sealing cover plate is fixedly arranged on the inner side of the outer protective cylinder.
The beneficial effect who adopts above-mentioned scheme is: an annular sealing cover plate is arranged at the upper end of the inner protective cylinder, so that rainwater can be effectively prevented from entering a gap between the outer protective cylinder and the inner protective cylinder.
Further, the annular sealing cover plate is a steel plate and is fixedly arranged between the outer casing and the inner casing in a welding mode.
The beneficial effect who adopts above-mentioned scheme is: the annular sealing cover plate formed by the steel plate is arranged between the outer protective cylinder and the inner protective cylinder in a welding mode, so that the fixing effect between the annular sealing cover plate and the outer protective cylinder and the inner protective cylinder can be improved, and the annular sealing cover plate is prevented from falling off.
Further, the diameter of the outer protective cylinder is 1500-152 mm, the diameter of the inner protective cylinder is 1300-1500mm, and the diameter of the reinforcement cage assembly is 1000-1100 mm.
The beneficial effect who adopts above-mentioned scheme is: which facilitates the formation of voids without causing the voids to be too large.
Drawings
Fig. 1 is the utility model relates to a high accuracy static load experiment engineering pile structure's whole schematic diagram.
Fig. 2 is the utility model discloses a high accuracy static load experiment engineering pile structure's A-A section view.
Fig. 3 is a B-B sectional view of the high-precision static load experimental engineering pile structure of the utility model.
In the figures, the list of components represented by the various reference numbers is as follows:
the outer protective barrel 1, the inner protective barrel 2, the separation block 3, the water stop 4, the sealing cover plate 5, the steel bar cage assembly 6, concrete 7, a main reinforcement 8, a spiral stirrup 9 and a stiffening stirrup 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. When an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
As shown in fig. 1, in order to improve the precision of the detection data of pressure-bearing static load experiment or resistance to plucking static load experiment, the utility model provides a high accuracy static load experiment engineering pile structure mainly includes an outer section of thick bamboo 1, interior protective barrel 2 and steel reinforcement cage subassembly 6.
The inner protective tube 2 is sleeved in the outer protective tube 1, and a gap is formed between the outer protective tube 1 and the inner protective tube 2; the reinforcement cage assembly 6 is sleeved in the inner protective barrel 2, and the outer protective barrel 1, the inner protective barrel 2 and the reinforcement cage assembly 6 are coaxially arranged; the outer protective cylinder 1, the inner protective cylinder 2 and the steel bar cage assembly 6 are buried below a soil layer, and the outer protective cylinder 1 and the inner protective cylinder 2 are located at the upper end of the steel bar cage assembly 6.
Before engineering pile carries out pressure-bearing static load experiment or resistance to plucking static load experiment, carry out optimization transformation to engineering pile pore-forming dado mode, use the two pile casing structures of constituteing by inner casing 2 and outer pile casing 1, traditional single pile casing form has been replaced, when backfilling at empty pile section, backfill and the outer 1 contact of pile casing, rather than direct connection at steel reinforcement cage subassembly 6 contact, can reduce the interact force between soil layer and the engineering pile from this, thereby improve the precision of pressure-bearing static load experiment or resistance to plucking static load experiment testing result, the safety of engineering has been ensured, great spreading value has.
Preferably, the outer casing 1 and the inner casing 2 are round steel pipes; the diameter of the outer protective cylinder 1 is larger than that of the inner protective cylinder 2, and the diameter of the inner protective cylinder 2 is larger than that of the steel bar cage assembly 6, so that a gap is formed between the outer protective cylinder 1 and the inner protective cylinder 2, and the precision of a detection result of a pressure-bearing static load experiment or an anti-pulling static load experiment is improved through the gap between the outer protective cylinder 1 and the inner protective cylinder 2. Specifically, the diameter of the outer protective cylinder 1 is 1500-152 mm, the diameter of the inner protective cylinder 2 is 1300-1500mm, and the diameter of the reinforcement cage assembly 6 is 1000-1100 mm. More specifically, the diameter of the outer protective cylinder 1 is 1600mm, the wall thickness is 10mm, the diameter of the inner protective cylinder 2 is 1400mm, the wall thickness is 10mm, and the diameter of the steel bar cage assembly 6 is 1060 mm.
Preferably, the length of the outer casing 1 is smaller than that of the inner casing 2, the length of the inner casing 2 is smaller than that of the reinforcement cage assembly 6, and the upper ends of the outer casing 1, the inner casing 2 and the reinforcement cage assembly 6 are flush with each other.
The embedding time sequence of the inner protective cylinder 2 and the outer protective cylinder 1 is different, so that the inner protective cylinder 2 is deeper than the underground embedding depth of the outer protective cylinder 1. Because the diameter of the outer protecting cylinder 1 is larger than that of the inner protecting cylinder 2, the outer protecting cylinder 1 can be buried only by adopting a drill bit of a rotary excavator matched with the diameter of the outer protecting cylinder 1 to drill a hole; the diameter of the inner protective cylinder 2 is smaller than that of the outer protective cylinder 1, the lower part of the inner protective cylinder 2 at the same depth is suspended and cannot be fixed, and the inner protective cylinder 2 is deeper than the underground depth of the outer protective cylinder 1. Keep flushing each other through making the upper end that protects a section of thick bamboo 1, interior protective barrel 2 and steel reinforcement cage subassembly 6 outward, protect a section of thick bamboo 1, interior protective barrel 2 and steel reinforcement cage subassembly 6's length in proper order in addition and increase progressively, protect a section of thick bamboo 2 unsettled even drop in can effectively preventing. Specifically, the inner casing 2 needs to be at least about one meter deeper than the outer casing 1, and if the distance is too close, soil mass below a gap between the inner casing 2 and the outer casing 1 is easy to collapse, so that the outer casing 1 sinks.
As shown in fig. 2 and 3, the reinforcement cage assembly 6 includes a main reinforcement 8, a spiral stirrup 9 and a stiffening hoop 10; the main reinforcements 8 are arranged outside the spiral stirrup 9 in the radial direction of the spiral stirrup 9, and the stiffening hoops 10 fix the main reinforcements 8 on the spiral stirrup 9; concrete 7 is poured on the main reinforcement 8, the spiral stirrups 9 and the stiffening hoops 10, and the concrete 7 is a mixture of sand, stone, cement and water. The main reinforcement 8, the spiral stirrups 9 and the stiffening hoops 10 form a reinforcement cage assembly 6, and concrete 7 formed by a mixture of sand, stone, cement and water is poured on the reinforcement cage assembly 6, so that the strength of the engineering pile can be improved.
The utility model discloses a through form the clearance and realize improving the purpose of static load experiment precision between two protect a structure, if can't form the clearance between two protect a structure, then can influence experimental precision. As shown in fig. 1, a plurality of separation blocks 3 are disposed on the outer side of the inner casing 2, the separation blocks 3 are located in a gap between the outer casing 1 and the inner casing 2, and the separation blocks 3 are used for preventing the outer casing 1 and the inner casing 2 from being attached to each other. The outer side of the inner protective cylinder 2 is provided with a plurality of separation blocks 3, the separation blocks 3 are located in a gap between the outer protective cylinder 1 and the inner protective cylinder 2, and in the construction process, if the inner protective cylinder 2 and the outer protective cylinder 1 are not coaxial due to careless operation, the separation blocks 3 can effectively prevent the inner protective cylinder 2 and the outer protective cylinder 1 from being attached together.
Specifically, the separation block 3 is an i-steel, and the separation block 3 is fixedly arranged on the outer side of the inner casing 2 in a welding manner. Adopt I-steel as separating block 3, and will separate block 3 and fix the outside that sets up in interior casing 2 through the welded mode, have draw materials advantages such as simple, construction cost is low and joint strength height. It should be noted that, after molding, the clear distance between the partition block 3 and the outer jacket 1 is 5-15 mm.
As shown in fig. 2 and 3, preferably, an annular water stop 4 is arranged on the outer side of the inner casing 2, the annular water stop 4 is arranged around the lower end of the inner casing 2, and the annular water stop 4 is used for preventing rainwater from seeping downwards; the inner side of the annular water stop 4 is fixedly arranged on the outer side of the inner casing 2, and the outer side of the annular water stop 4 abuts against the inner side of the outer casing 1. An annular water stop belt 4 is arranged on the outer side of the inner protective barrel 2, the outer side of the annular water stop belt 4 is abutted against the inner side of the outer protective barrel 1, and rainwater infiltration can be effectively prevented.
Specifically, the annular water stop 4 is made of rubber materials, and the annular water stop 4 is fixedly arranged on the outer side of the inner casing 2 in a viscose mode. Adopt rubber materials as annular waterstop 4 for annular waterstop 4 can take place deformation by the atress, thereby guarantees that annular waterstop 4 and interior section of thick bamboo 2 and outer section of thick bamboo 1 can both keep in close contact with.
As shown in fig. 2 and 3, preferably, an annular sealing cover plate 5 is arranged on the outer side of the inner casing 2, the annular sealing cover plate 5 is arranged around the upper end of the inner casing 2, and the annular sealing cover plate 5 is used for preventing rainwater from entering a gap between the outer casing 1 and the inner casing 2; the inner side of the annular sealing cover plate 5 is fixedly arranged on the outer side of the inner protection tube 2, and the outer side of the annular sealing cover plate 5 is fixedly arranged on the inner side of the outer protection tube 1. An annular sealing cover plate 5 is arranged at the upper end of the inner protective barrel 2, so that rainwater can be effectively prevented from entering a gap between the outer protective barrel 1 and the inner protective barrel 2.
Specifically, the annular sealing cover plate 5 is a steel plate, and the annular sealing cover plate 5 is fixedly arranged between the outer casing 1 and the inner casing 2 in a welding manner. The annular sealing cover plate 5 formed by the steel plate is arranged between the outer protective barrel 1 and the inner protective barrel 2 in a welding mode, the fixing effect between the annular sealing cover plate 5 and the outer protective barrel 1 and the inner protective barrel 2 can be improved, and the annular sealing cover plate is prevented from falling off.
Generally speaking, the utility model provides a high accuracy static load experiment engineering pile structure, its structure includes that outer a section of thick bamboo 1, interior protective barrel 2, deflector 3, waterstop 4, sealed apron 5, steel reinforcement cage subassembly 6 and concrete 7 protect. The side wall of the outer pile casing 1 is embedded into the soil layer, and the bottom of the outer pile casing 1 is abutted against the soil layer; the inner protecting cylinder 2 is embedded into the outer protecting cylinder 1, and the bottom of the inner protecting cylinder 2 is abutted against a soil layer; the guide plate 3 is connected with the inner protective cylinder 2 in a welding mode; one end of the water stop 4 is connected with the inner protective barrel 2 in a gluing mode, and the other end of the water stop 4 is directly attached to the outer protective barrel 1; the sealing cover plate 5 is respectively connected with the outer protective barrel 1 and the inner protective barrel 2 in a welding mode; the reinforcement cage assembly 6 is formed by processing and combining a main reinforcement 8, a spiral stirrup 9 and a stiffening rib, and is hoisted into a pile hole through an automobile crane; the concrete 7 is formed by mixing sand, stone, cement and water and is poured in the reinforcement cage assembly 6 to form a whole.
When the method is concretely implemented, a rotary excavator (the diameter of a drill bit is larger than the diameter of the outer protecting cylinder by 200mm) is adopted to form a hole to the designed absolute elevation of the pile top, and then the outer protecting cylinder 1 is buried; after the outer protective barrel 1 is buried, a rotary excavator (the diameter of a drill bit is larger than that of the inner protective barrel by 200mm) is used for forming a hole to a position 1000mm below the outer protective barrel 1; when the hole of the engineering pile is formed, firstly welding a guide plate 3 on an inner pile casing 2, installing a water stop belt 4 at the bottom of the inner pile casing 2, and embedding the inner pile casing 2 when the hole of a rotary excavator is formed to a position 1000mm below an outer pile casing 1; after the inner protective cylinder 2 is buried, continuously forming a hole to the elevation of the pile bottom by using a rotary excavating machine (the diameter of a drill bit is larger than the diameter of the steel bar cage assembly by 200mm), then hoisting the steel bar cage into the pile hole by using a truck crane, and finally pouring concrete 7; and after the concrete 7 of the engineering detection pile is poured for 28 days, carrying out pressure-bearing static load experiment or anti-pulling static load experiment detection on the engineering pile on the original ground by adopting a hydraulic device.
The utility model discloses from design and construction angle, carried out optimization transformation to engineering pile pore-forming dado mode before carrying out the pressure-bearing static load experiment or resistance to plucking static load experiment to engineering pile, used two to protect a structural style and replaced traditional single section of thick bamboo form to two protect a section of thick bamboo and do not pull out before static load experiment detects the completion, empty stake section is direct to pour concrete 7 together with engineering pile, protects in making and forms a whole between a section of thick bamboo 2 and the engineering pile. Meanwhile, due to the fact that a gap exists between the inner protective cylinder 2 and the outer protective cylinder 1, when a pressure-bearing static load experiment or an anti-pulling static load experiment is conducted on the engineering pile, the influence of a soil body on a side wall of the hollow pile section on a detection result can be avoided, the detection result is more reliable, more powerful support is provided for the design of the engineering pile, the engineering safety is guaranteed, and the large popularization value is achieved.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a high accuracy static load experiment engineering pile structure which characterized in that includes:
an outer protective cylinder;
the inner protecting cylinder is sleeved in the outer protecting cylinder, and a gap is formed between the outer protecting cylinder and the inner protecting cylinder;
the steel bar cage assembly is sleeved in the inner protective cylinder, and the outer protective cylinder, the inner protective cylinder and the steel bar cage assembly are coaxially arranged;
the outer protective cylinder, the inner protective cylinder and the steel bar cage assembly are buried below a soil layer, and the outer protective cylinder and the inner protective cylinder are located at the upper end of the steel bar cage assembly.
2. The high-precision static load experimental engineering pile structure according to claim 1, characterized in that: the outer protective cylinder and the inner protective cylinder are round steel pipes;
the diameter of the outer protecting cylinder is larger than that of the inner protecting cylinder, and the diameter of the inner protecting cylinder is larger than that of the reinforcement cage assembly;
the length of the outer protecting cylinder is smaller than that of the inner protecting cylinder, and the length of the inner protecting cylinder is smaller than that of the reinforcement cage assembly; the upper ends of the outer protective cylinder, the inner protective cylinder and the reinforcement cage assembly are mutually flush.
3. The high-precision static load experimental engineering pile structure according to claim 1, characterized in that: the reinforcement cage assembly comprises a main reinforcement, a spiral stirrup and a stiffening hoop;
the main reinforcements are arranged on the outer side of the spiral stirrup along the radial direction of the spiral stirrup, and the stiffening hoops fix the main reinforcements on the spiral stirrup;
concrete is poured on the main reinforcement, the spiral stirrups and the stiffening hoops, and the concrete is a mixture of sand, stone, cement and water.
4. The high-precision static load experimental engineering pile structure according to claim 1, characterized in that: the outer side of the inner protective cylinder is provided with a plurality of separation blocks, the separation blocks are positioned in a gap between the outer protective cylinder and the inner protective cylinder, and the separation blocks are used for preventing the outer protective cylinder and the inner protective cylinder from being attached to each other.
5. The high-precision static load experimental engineering pile structure according to claim 4, characterized in that: the separation blocks are made of I-shaped steel and are fixedly arranged on the outer side of the inner protective cylinder in a welding mode.
6. The high-precision static load experimental engineering pile structure according to claim 1, characterized in that: an annular water stop belt is arranged on the outer side of the inner protective barrel and is arranged at the lower end of the inner protective barrel in a surrounding mode, and the annular water stop belt is used for preventing rainwater from seeping downwards;
the inner side of the annular water stop is fixedly arranged on the outer side of the inner protective tube, and the outer side of the annular water stop abuts against the inner side of the outer protective tube.
7. The high-precision static load experimental engineering pile structure according to claim 6, characterized in that: the annular water stop is made of rubber materials and fixedly arranged on the outer side of the inner casing in a viscose mode.
8. The high-precision static load experimental engineering pile structure according to claim 1, characterized in that: an annular sealing cover plate is arranged on the outer side of the inner protective cylinder, the annular sealing cover plate is arranged at the upper end of the inner protective cylinder in a surrounding mode, and the annular sealing cover plate is used for preventing rainwater from entering a gap between the outer protective cylinder and the inner protective cylinder;
the inner side of the annular sealing cover plate is fixedly arranged on the outer side of the inner protective cylinder, and the outer side of the annular sealing cover plate is fixedly arranged on the inner side of the outer protective cylinder.
9. The high-precision static load experimental engineering pile structure according to claim 8, characterized in that: the annular sealing cover plate is a steel plate and is fixedly arranged between the outer protective barrel and the inner protective barrel in a welding mode.
10. A high precision static load experimental engineering pile structure according to any one of claims 1 to 9, characterized in that: the diameter of the outer protective cylinder is 1500-152 mm, the diameter of the inner protective cylinder is 1300-1500mm, and the diameter of the reinforcement cage assembly is 1000-1100 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020437873.XU CN212153481U (en) | 2020-03-30 | 2020-03-30 | High-precision static load experimental engineering pile structure |
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| CN202020437873.XU CN212153481U (en) | 2020-03-30 | 2020-03-30 | High-precision static load experimental engineering pile structure |
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