CN111101513B

CN111101513B - Rust-resistant structure of foundation pile

Info

Publication number: CN111101513B
Application number: CN201911398074.4A
Authority: CN
Inventors: 同平武; 尉柏林; 宋彦芝; 侯兴海; 郑国领; 王金雷; 宋占起
Original assignee: Beijing Urban And Rural Zhonghao Construction Co ltd
Current assignee: Beijing Urban And Rural Zhonghao Construction Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-05-11
Anticipated expiration: 2039-12-30
Also published as: CN111101513A

Abstract

The invention relates to an anti-rust structure of a foundation pile, which comprises a shaft which is vertically arranged below the ground, wherein a cylindrical reinforcement cage is arranged inside the shaft, the reinforcement cage is collinear with the axis of the shaft, an arc baffle is arranged inside the shaft, the diameter of a circle on which the outer side of the arc baffle is located is the same as the inner diameter of the shaft, a limiting assembly is arranged on the inner side of the arc baffle, the limiting assembly comprises a first sleeve hinged on the inner wall of the arc baffle, a lead screw is connected to the inner thread of one end, far away from the arc baffle, of the first sleeve, a second sleeve is connected to the outer thread of one end, far away from the first sleeve, of the lead screw is connected to the outer side of the other sleeve in a threaded manner, the first sleeve and the second sleeve are close to or far away from. The invention has the effect of preventing the reinforcement cage inside the foundation pile from rusting so as to ensure the strength of the foundation pile and prolong the service life.

Description

Rust-resistant structure of foundation pile

Technical Field

The invention relates to the technical field of building construction, in particular to an anti-rust structure of a foundation pile.

Background

Karst landform is a general term for the surface and underground forms formed by the erosion action of water with erosion power on soluble rocks (most limestone), and is mainly characterized by the geographical phenomena such as karst caves and sky pits. The karst landform distribution area of China is wide, such as Yunnan land, Guizhou land and the like, and surveying is needed when building construction is carried out in the area, so that places with concentrated solution caves are avoided. Due to the complexity of a karst system, when a shaft of a foundation pile is excavated, some hidden karst caves are inevitably encountered, so that certain difficulty is caused to building construction.

When a shaft for excavating a foundation pile meets a karst cave in the prior art, a cylindrical reinforcement cage is placed inside the shaft, an iron plate is placed next to the inner wall of the shaft, the karst cave is blocked through the iron plate, the iron plate and the reinforcement cage are fixed together through a plurality of sections of reinforcing steel bars, and finally concrete is poured to complete construction of the foundation pile.

Among the above-mentioned scheme, after concrete placement accomplished, the part that iron plate carries out the shutoff to the solution cavity can take place electrochemical corrosion with air, water direct contact to iron plate large tracts of land corrosion can make the multistage reinforcing bar that plays the fixed action after a period and even the steel reinforcement cage also can take place the corrosion, and the corrosion of steel reinforcement cage can seriously influence the intensity and the life of foundation pile.

Disclosure of Invention

The invention aims to provide an anti-rust structure of a foundation pile, which has the effect of preventing a reinforcement cage inside the foundation pile from being rusted so as to ensure the strength and the service life of the foundation pile.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides an anti-rust structure of foundation pile, including vertical seting up the pit shaft in the below ground, the inside of pit shaft is provided with the axis collineation that is columniform steel reinforcement cage and pit shaft, the inside of pit shaft is provided with the diameter of the outside place circle of cowl and the internal diameter of pit shaft the same, spacing subassembly is installed to cowl's inboard, spacing subassembly is including articulating sleeve one on the cowl inner wall, the inside threaded connection who keeps away from cowl's one end of sleeve one has the lead screw, the outside threaded connection who keeps away from sleeve one end of lead screw has sleeve two, sleeve one is close to or keeps away from each other with sleeve two when the lead screw rotates, lead screw intermediate position fixedly connected with hex nut, sleeve two one end of keeping away from lead screw one articulates there is the.

By adopting the technical scheme, the diameter of the circle of the arc baffle arranged in the pit shaft and outside of the arc baffle is the same as the inner diameter of the pit shaft, the arc baffle can block a solution cavity in a soil layer, the first sleeve is hinged on the inner wall of the arc baffle and is in threaded connection with the first sleeve, the second sleeve is in threaded connection with the outer side of one end, far away from the first sleeve, of the screw rod, a worker can mutually approach or keep away from the first sleeve and the second sleeve when rotating the screw rod, so that the arc baffle can be clamped by adjusting the overall length of the first sleeve, the second sleeve and the screw rod, the hexagonal nut is fixed in the middle of the screw rod, the hexagonal nut can be more conveniently rotated by the worker, the top plate is hinged at one end, far away from the first sleeve, the contact area of the second sleeve and a reinforcement cage can be increased by the arrangement of the top plate, and therefore the arc baffle can be more, Reliable, again because be articulated between sleeve one and the cowl, when cowl is by subaerial hoist and mount to the pit shaft inside, can overturn the sleeve downwards earlier, avoid the steel reinforcement cage, thereby can be when hoist and mount better whereabouts and reach preset position, cowl is made for plastics, carry out the shutoff and fix the back at cowl to the solution cavity, concreting, the part that cowl carries out the shutoff to the solution cavity can expose in air and aquatic but can not take place the corrosion and also can not exert an influence to the steel reinforcement cage, and then an antirust structure of foundation pile has the effect that can prevent the inside steel reinforcement cage of foundation pile from taking place the corrosion and guarantee foundation pile intensity and life.

The invention is further configured to: the arc baffle is provided with three and all links together through the connecting block between the adjacent arc baffle, and three arc baffle constitute ring shape and the external diameter of ring shape cross-section is the same with the internal diameter of pit shaft jointly.

Through adopting above-mentioned technical scheme, three cowl plates constitute ring shape and ring shape cross-section's external diameter is the same with the internal diameter of pit shaft jointly, because link together through the connecting block between two adjacent cowl plates to can play spacing effect mutually after three cowl plates are fixed jointly, prevent that three cowl plates from moving each other and leading to the dislocation too big, and then can be better carry out the shutoff to the solution cavity.

The invention is further configured to: the cross-section that the standing groove and the standing groove crossed the axis was seted up to the equal level in both ends of every cowl is T shape, and the connecting block is the inside that elastic material made and both ends were embedded into the standing groove of adjacent cowl respectively, and the both ends that all are provided with spring and spring between two adjacent cowl butt respectively on the relative lateral wall between adjacent cowl, and the spring is in tensile state and the connecting block is in the partial compression state outside the standing groove.

By adopting the technical scheme, the connecting block is made of elastic material, two ends of the connecting block are respectively embedded into the placing grooves formed in the adjacent arc-shaped baffles, the cross section of the placing groove passing through the axis is T-shaped, so that two ends of the connecting block can not be separated after being clamped into the placing grooves, two ends of the spring are respectively abutted against the opposite side walls between the adjacent arc-shaped baffles, the outer walls of the arc-shaped baffles are all attached to the inner wall of the shaft to fall when the three arc-shaped baffles enter the shaft, the connecting block in a compression state can rapidly extend after a worker cuts the spring in a stretching state through a tool after the spring in the stretching state reaches the position of the karst cave, the distance between the adjacent arc-shaped baffles can be enlarged, and the outer diameter of a ring shape formed by the three arc-shaped baffles together tends to be enlarged, therefore, the positions of the three arc-shaped baffles can be better limited, and the operation is simple and quick.

The invention is further configured to: the roof is the arc and carries out the bending to steel reinforcement cage's direction.

Through adopting above-mentioned technical scheme, because the steel reinforcement cage is cylindrical, when roof and steel reinforcement cage contact, if the roof is planar then only be a tangent lines with steel reinforcement cage contact position, present roof is the arc then becomes two with steel reinforcement cage contact position, has increased the area of contact of roof and steel reinforcement cage to can be better carry on spacingly to cowl, make the rust-resistant structure of a foundation pile more reasonable.

The invention is further configured to: the sleeve can be turned upwards or downwards.

Through adopting above-mentioned technical scheme, sleeve one articulates on cowl's inner wall and can upwards or overturn downwards, when cowl was by subaerial hoist and mount to pit shaft inside, can overturn sleeve downwards earlier to cowl is when the hoist and mount whereabouts, and reinforcing bar cage can be avoided to roof, sleeve two, lead screw and sleeve one, and cowl can be better whereabouts and reach preset position.

The invention is further configured to: and a rubber pad is arranged on one side of the top plate facing the reinforcement cage.

Through adopting above-mentioned technical scheme, the setting of rubber pad can make the roof when contacting with the steel reinforcement cage, plays the effect of protection to the steel reinforcement cage.

The invention is further configured to: and the circumferential side wall of the second sleeve is fixedly connected with a limiting plate, and the limiting plate is annular and plays a limiting role in limiting the rotating angle of the top plate.

Through adopting above-mentioned technical scheme, the setting up of limiting plate makes the roof great rotation of range can not appear when rotating, can carry on spacingly to the turned angle of roof to when the staff makes the whole length of sleeve one, sleeve two and lead screw grow and the roof support on the steel reinforcement cage rotating the lead screw, because the existence of limiting plate can make the roof more quick rotate to the position to the steel reinforcement cage, thereby make the structure of spacing subassembly more reasonable.

The invention is further configured to: the inside of every annular baffle is provided with a plurality of spacing subassemblies.

Through adopting above-mentioned technical scheme, setting up of a plurality of spacing subassemblies can be better spacing to the ring baffle carrying on to the ring baffle can be better carries out the shutoff to the solution cavity.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the arc baffle is arranged inside the shaft, the diameter of a circle where the outer side of the arc baffle is located is the same as the inner diameter of the shaft, the arc baffle can block a solution cavity in a soil layer, the first sleeve is hinged to the inner wall of the arc baffle, the first screw rod is in threaded connection with the inside of the first sleeve, the second sleeve is in threaded connection with the outer side of one end, far away from the first sleeve, of the screw rod, the first sleeve and the second sleeve are close to or far away from each other when a worker rotates the screw rod, therefore, the arc baffle can be clamped by adjusting the overall length of the first sleeve, the second sleeve and the screw rod, the hexagonal nut is fixed in the middle of the screw rod, the hexagonal nut can be more convenient for the worker to rotate the screw rod, the top plate is hinged to one end, far away from the first sleeve, the contact area between the second sleeve and a reinforcement, The sleeve is hinged with the arc baffle, when the arc baffle is hoisted to the inside of a shaft from the ground, the sleeve can be turned downwards to avoid a reinforcement cage, so that the arc baffle can fall down better and reach a preset position during hoisting, the arc baffle is made of plastic, after the arc baffle plugs and fixes the karst cave, concrete is poured, the part of the arc baffle plugging the karst cave can be exposed in air and water but can not be corroded and can not influence the reinforcement cage, and the rust-proof structure of the foundation pile has the effect of preventing the reinforcement cage in the foundation pile from being corroded so as to ensure the strength and the service life of the foundation pile;

2. the connecting blocks are made of elastic materials, two ends of each connecting block are respectively embedded into the placing grooves formed in the adjacent arc-shaped baffles, the cross section of each placing groove passing through the axis is T-shaped, so that the two ends of each connecting block cannot be separated after being clamped into the placing grooves, two ends of each spring are respectively abutted against the opposite side walls between the adjacent arc-shaped baffles, the outer walls of the arc-shaped baffles all fall along the inner wall of the shaft when the three arc-shaped baffles enter the shaft, the springs are in a stretching state at the moment, the parts of the connecting blocks, which are positioned outside the placing grooves, are in a compression state, when the three arc-shaped baffles reach the position of the karst cave, the springs in the stretching state are cut by a tool by a worker, the connecting blocks in the compression state can rapidly extend, the distance between the adjacent arc-shaped baffles can be enlarged, and the outer diameter of, therefore, the positions of the three arc-shaped baffles can be better limited, and the operation is simple and quick;

3. the setting up of limiting plate makes the roof great rotation of range can not appear when rotating, can carry on spacingly to the turned angle of roof to when the staff makes the whole length of sleeve one, sleeve two and lead screw lengthen and roof support on the steel reinforcement cage rotating the lead screw, because the existence of limiting plate can make the roof more quick rotate to the position to the steel reinforcement cage, thereby make the structure of spacing subassembly more reasonable.

Drawings

FIG. 1 is a schematic cross-sectional structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of three curved baffles;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a schematic sectional view of the plane B-B in fig. 2.

In the figure, 1, a well bore; 2. a reinforcement cage; 3. an arc-shaped baffle plate; 31. a placement groove; 32. connecting blocks; 33. a spring; 4. a limiting component; 41. a first sleeve; 411. hinging a shaft; 42. a screw rod; 421. a hexagonal nut; 43. a second sleeve; 431. a limiting plate; 44. a top plate; 5. a soil layer; 6. and (4) cave filling.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the anti-rust structure of the foundation pile disclosed by the invention comprises a shaft 1 vertically arranged below the ground, wherein a karst cave 6 exists in a soil layer 5, the karst cave 6 is communicated with the inside of the shaft 1, a cylindrical reinforcement cage 2 is arranged in the shaft 1, and the axis of the reinforcement cage 2 is collinear with the axis of the shaft 1.

Referring to fig. 1 and 2, three arc-shaped baffles 3 with the same size are arranged inside the shaft 1, the arc-shaped baffles 3 are made of plastics such as general plastics and engineering plastics, and the diameter of a circle on the outer side of each arc-shaped baffle 3 is the same as the inner diameter of the shaft 1. A connecting block 32 is arranged between every two adjacent arc-shaped baffles 3, and the connecting blocks 32 are made of elastic materials such as rubber. With reference to fig. 4, the two ends of each cowl 3 are horizontally provided with a placing groove 31, the cross section of the placing groove 31 passing through the axis is T-shaped, and the two ends of the connecting block 32 are respectively embedded into the placing grooves 31 of the adjacent cowl 3. A spring 33 is arranged between two adjacent arc-shaped baffles 3, two ends of the spring 33 abut against the opposite side walls between the adjacent arc-shaped baffles 3 respectively, the spring 33 is in a stretching state, and the part of the connecting block 32 outside the placing groove 31 is in a compressing state. The three arc-shaped baffles 3 jointly form a circular ring shape, and the outer diameter of the circular ring-shaped cross section is the same as the inner diameter of the shaft 1.

Referring to fig. 2 and 3, two stop assemblies 4 are provided on the inside of each cowl 3. Each limiting component 4 comprises a first sleeve 41 arranged on the inner side of the arc-shaped baffle plate 3, the first sleeve 41 is hinged with the arc-shaped baffle plate 3 through a hinge shaft 411 arranged horizontally, and the first sleeve 41 can turn upwards or downwards. The inner thread of one end, away from the arc-shaped baffle 3, of the first sleeve 41 is connected with a screw rod 42, the outer thread of one end, away from the first sleeve 41, of the screw rod 42 is connected with a second sleeve 43, the first sleeve 41 and the second sleeve 43 are close to or away from each other when the screw rod 42 rotates, and a hexagonal nut 421 is fixedly connected to the middle of the screw rod 42. One end of the second sleeve 43, which is far away from the first lead screw 42, is hinged with a top plate 44, the top plate 44 is arc-shaped and is bent towards the direction of the reinforcement cage 2, and a rubber pad is arranged on one side of the top plate 44, which faces the reinforcement cage 2. A limiting plate 431 is fixedly connected to the circumferential side wall of the second sleeve 43, and the limiting plate 431 is annular and plays a limiting role in limiting the rotation angle of the top plate 44.

The implementation principle of the embodiment is as follows: the staff places cylindrical steel reinforcement cage 2 inside the pit shaft 1 after, then puts into the inside of pit shaft 1 with three consecutive cowl 3 along the inner wall of pit shaft 1, and the ring baffle falls to the position at cavern 6 place and carries out the shutoff to cavern 6. At this moment, the worker firstly rotates the screw rod 42, the overall length of the second sleeve 43, the screw rod 42 and the first sleeve 41 is adjusted, the top plate 44 abuts against the reinforcement cage 2, and the position of the arc-shaped baffle 3 is preliminarily limited. Then, the worker cuts the spring 33 in a stretching state by using a tool, and the part of the connecting block 32, which is made of an elastic material and is positioned outside the placing groove 31, is in a compressing state, so that after the spring 33 is cut, the connecting block 32 can rapidly extend, and a ring shape formed by three ring-shaped baffles has a tendency of expanding, so that the ring-shaped baffles can be better fixed on the inner wall of the shaft 1 and can better block the karst cave 6. And then, the worker operates the limiting assembly 4 again, rotates the screw rod 42, adjusts the overall length formed by the first sleeve 41, the screw rod 42 and the second sleeve 43, adjusts the angle and the position of the arc-shaped plate against the reinforcement cage 2, and finally fixes the positions of the three arc-shaped baffles 3 after the adjustment is finished without changing. And finally, pouring concrete into the shaft 1, and finishing the construction of the foundation pile. After concrete placement accomplished, because cowl 3 is made for plastics, for iron plate, can not take place electrochemical corrosion after cowl 3 contacted air, water, more can not influence the intensity and the life of foundation pile, and then an antirust structure of foundation pile has the effect that can prevent that the inside steel reinforcement cage 2 of foundation pile from taking place the corrosion and guarantee foundation pile intensity and life.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by the embodiments, therefore: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an anti rust structure of foundation pile, includes vertical pit shaft (1) of seting up below ground, the inside of pit shaft (1) is provided with the axis collineation that is columniform steel reinforcement cage (2) and pit shaft (1), its characterized in that: the diameter of a circle where the outer side of the arc baffle (3) is located is the same as the inner diameter of the shaft (1), a limiting assembly (4) is installed on the inner side of the arc baffle (3), the limiting assembly (4) comprises a first sleeve (41) hinged to the inner wall of the arc baffle (3), a lead screw (42) is connected to the inner thread of one end, away from the arc baffle (3), of the first sleeve (41), a second sleeve (43) is connected to the outer side thread of one end, away from the first sleeve (41), of the lead screw (42), the first sleeve (41) and the second sleeve (43) are close to or away from each other when the lead screw (42) rotates, a hexagon nut (421) is fixedly connected to the middle position of the lead screw (42), a top plate (44) is hinged to one end, away from the first sleeve (43), of the top plate (44) is arc-shaped and bends towards the direction of the reinforcement cage (2), the arc-shaped baffle (3) is made of plastic.

2. The rust inhibitive structure of a foundation pile according to claim 1, characterized in that: the arc-shaped baffle plates (3) are provided with three arc-shaped baffle plates (3) which are connected with each other through connecting blocks (32), and the three arc-shaped baffle plates (3) jointly form a ring shape, and the outer diameter of the ring-shaped cross section is the same as the inner diameter of the shaft (1).

3. The rust inhibitive structure of a foundation pile according to claim 2, characterized in that: the cross-section that standing groove (31) and standing groove (31) crossed the axis was seted up to the equal level in both ends of every cowl (3) is T shape, connecting block (32) are elastic material and make and both ends imbed respectively the inside of standing groove (31) of adjacent cowl (3), the both ends that all are provided with spring (33) and spring (33) between two adjacent cowl (3) respectively the butt on the relative lateral wall between adjacent cowl (3), spring (33) are in tensile state and connecting block (32) are in the partial compression state outside standing groove (31).

4. The rust inhibitive structure of a foundation pile according to claim 1, characterized in that: the sleeve I (41) can be turned upwards or downwards.

5. The rust inhibitive structure of a foundation pile according to claim 1, characterized in that: and a rubber pad is arranged on one side of the top plate (44) facing the reinforcement cage (2).

6. The rust inhibitive structure of a foundation pile according to claim 1, characterized in that: and a limiting plate (431) is fixedly connected to the circumferential side wall of the second sleeve (43), and the limiting plate (431) is annular and plays a limiting role in limiting the rotating angle of the top plate (44).

7. The rust inhibitive structure of a foundation pile according to claim 1, characterized in that: the inner side of each annular baffle is provided with a plurality of limiting assemblies (4).