CN111677018A - Novel uplift-resistant pile cap - Google Patents
Novel uplift-resistant pile cap Download PDFInfo
- Publication number
- CN111677018A CN111677018A CN202010600465.6A CN202010600465A CN111677018A CN 111677018 A CN111677018 A CN 111677018A CN 202010600465 A CN202010600465 A CN 202010600465A CN 111677018 A CN111677018 A CN 111677018A
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- cylinder body
- pile cap
- piston
- uplift pile
- pile
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- 239000000463 material Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a novel uplift pile cap which comprises a cylinder body and a piston, wherein a cavity is arranged in the cylinder body, the piston comprises a movable plate, a stroke rod and a connecting piece, the movable plate is arranged in the cylinder body and can move along the axial direction of the cylinder body, and the connecting piece is arranged outside the cylinder body and is connected with the movable plate through the stroke rod. The novel uplift pile cap provided by the invention distinguishes two stress states of tension and compression of the pile body, so that the pile body can quit working when being compressed, does not participate in structural stress, and can effectively play a role only when resisting floating tension. The design effectively reduces the number of the pile bodies, greatly reduces the construction cost and has remarkable economic benefit.
Description
Technical Field
The invention relates to the technical field of anti-floating design of underground constructions, in particular to a novel uplift pile cap.
Background
With the rapid development of cities, more and more people gather in cities, and many ultra-large water works and sewage treatment plant projects are landed in order to meet the water consumption and drainage requirements of the rapidly increasing population. The common characteristic of the projects is that a plurality of ultra-large water ponds need to be built, such as a clean water pond in a water works, a folded plate flocculation horizontal sedimentation pond, a secondary sedimentation pond in a sewage treatment plant, a biological reaction pond and the like. The requirement of the pond on the bearing capacity of the foundation is not high, the original soil layer of the excavation site can meet the bearing capacity requirement, however, the buried depth of the pond is deep, the size of the pond is large, and when the underground water level is high, the dead weight of the pond can not meet the requirement of the anti-floating design.
In the prior art, the uplift pile body is adopted for resisting floating mostly, but the bearing capacity of the base bearing layer completely meets the design requirement, and the self weight of the structure of the pool cannot meet the requirement of resisting floating due to the fact that the underground water level is high, and the embarrassment can exist when the uplift pile is adopted for resisting floating. The combination of pressing and pulling of the pile body is considered, the contribution of the bearing capacity of the base bearing layer is completely ignored, and great waste can be caused by arranging excessive pile bodies; the bearing capacity of the base bearing layer is considered, only a small amount of pile bodies are used for resisting buoyancy, the ideal effect of directly transmitting the pressure of the pool bottom plate to the foundation soil cannot be achieved by adopting the current novel uplift pile cap design and structure mode, the pressure of the pool bottom plate can be preferentially transmitted to the pile bodies, and the pile bodies can be even damaged by pressure in severe cases.
The key of the problems is how to ensure that the pile body only used for resisting the floating can be withdrawn from the work when being pressed, does not participate in the structural stress, and can effectively play a role when resisting the floating and being pulled.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a novel uplift pile cap, which can distinguish two stressed states of a pressed pile body and a pulled pile body, maximize the utilization of a foundation bearing layer, reduce the arrangement of the pile body, and effectively reduce the construction cost.
Based on this, the invention provides a novel uplift pile cap, which comprises:
the cylinder body is internally provided with a cavity, a bottom plate of the cylinder body is provided with a through hole communicated with the cavity, and a top plate of the cylinder body is provided with an anchor bar;
the piston, the piston includes fly leaf and stroke pole, the fly leaf is located in the cavity and can follow the axial motion of cylinder body, the fly leaf with cylinder body clearance fit, the stroke pole wears to locate in the through-hole, the first end of stroke pole with fly leaf fixed connection, the second end of stroke pole is located outside the cylinder body for be connected with the pile body.
Preferably, the piston further comprises a connecting piece, the connecting piece is fixedly connected with the pile body, a clamping groove is formed in the connecting piece, and a buckle matched with the clamping groove is arranged at the second end of the stroke rod.
Preferably, the chamber is formed in a cylindrical shape, and the movable plate is also formed in a cylindrical shape.
Preferably, the height of the cylinder body is 50-60 mm.
Preferably, the length of the stroke rod is 20-30 mm.
Preferably, the top edge of the cylinder body is provided with a shear wing ring, and a stiffening rib is connected between the shear wing ring and the side wall of the cylinder body.
Preferably, the cylinder and the piston are made of metal materials.
Preferably, the surfaces of the cylinder and the piston are coated with an anticorrosive material.
Preferably, the number of the anchor bars is more than two.
Compared with the prior art, the novel uplift pile cap provided by the embodiment of the invention has the beneficial effects that:
the novel uplift pile cap comprises a cylinder body and a piston, wherein a cavity is arranged inside the cylinder body, a through hole communicated with the cavity is formed in a bottom plate of the cylinder body, anchor bars are arranged on a top plate of the cylinder body, the piston comprises a movable plate and a stroke rod, the movable plate is arranged in the cavity and can move along the axial direction of the cylinder body, the movable plate is in clearance fit with the cylinder body, the stroke rod is arranged in the through hole in a penetrating mode, the first end of the stroke rod is fixedly connected with the movable plate, and the second end of the stroke rod is located outside the cylinder body and used for being connected with a pile body. When the device is applied, when the dead weight of the water pool is greater than the buoyancy force applied to the water pool, the water pool sinks, the cylinder body is pressed to slide downwards, and based on the maximum stroke of the stroke rod and the height of the cylinder body, when the deformation of the foundation does not exceed the height of the cylinder body and the maximum stroke of the stroke rod, the movable plate is always positioned in the cavity and does not contact with the top plate of the cylinder body, and the pile body connected with the stroke rod does not contact with the bottom plate of the cylinder body, so that the pressure of the water pool is applied to the cylinder body and the foundation soil only in the sinking process of the whole water pool; when the dead weight of the pool is smaller than the buoyancy of the pool, the pool floats upwards, the cylinder body is pulled to slide upwards, when the floating displacement of the pool exceeds the maximum early-stage sinking displacement, the bottom plate of the cylinder body is in contact with the movable plate and transmits the pulling force to the piston, the piston transmits the pulling force to the pile body, and the pile body is subjected to the pulling force to participate in the work, so that the tensile anti-floating effect is exerted. Based on the structure, the novel uplift pile cap distinguishes two stress states of tension and compression of the pile body, so that the pile body can quit working when being compressed, does not participate in structural stress, and only plays a role when resisting floating tension; in addition, the novel uplift pile cap is connected with the water tank through the anchor bars, the anchor bars can resist tensile force, tension damage is prevented from occurring between the novel uplift pile cap and the water tank, and reliable connection is formed.
Drawings
Fig. 1 is a schematic structural view of a novel uplift pile cap according to an embodiment of the invention;
fig. 2 is a top view of a novel uplift pile cap according to an embodiment of the invention.
In the figure: 1. a cylinder body; 11. a chamber; 12. a through hole; 2. a piston; 21. a movable plate; 22. a connecting member; 23. a trip lever; 3. a pile body; 31. an end plate; 4. a shear wing ring; 5. a stiffening rib; 6. and (6) anchoring the ribs.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and "second" information may also be referred to as "first" information without departing from the scope of the present invention.
As shown in fig. 1 and 2, the invention provides a novel uplift pile cap, which is arranged on a pile body 3 and comprises a cylinder body 1 and a piston 2, wherein a chamber 11 is arranged inside the cylinder body 1, a plurality of anchor bars 6 are arranged on a top plate of the cylinder body 1, the connection effect of cylinder body and pond can fully be guaranteed, be equipped with the through-hole 12 that is linked together with cavity 11 on the bottom plate of cylinder body 1, piston 2 is including locating the fly leaf 21 in cylinder body 1, locate connecting piece 22 and stroke pole 23 outside cylinder body 1, connecting piece 22 and the end plate 31 welded connection of pile body 3, stroke pole 23 wear to locate in through-hole 12 and with fly leaf 21 fixed connection, connecting piece 22 is equipped with the draw-in groove, stroke pole 23 is equipped with the buckle with draw-in groove assorted, stroke pole 23 passes through buckle and draw-in groove with connecting piece 22 and realizes fixed connection, fly leaf 21 and cylinder body 1 clearance fit and can be linear motion along the axial of cylinder body 1.
Based on the structure, when the novel uplift pile cap provided by the invention is applied, when the dead weight of a water pool is greater than the buoyancy force applied to the water pool, the water pool sinks, the cylinder body 1 is pressed to slide downwards, and based on the maximum stroke of the stroke rod 23 and the height of the cylinder body 1, when the foundation deformation does not exceed the height of the cylinder body 1 and the maximum stroke of the stroke rod 23, the movable plate 21 is always positioned in the cavity 1 and is not contacted with the top plate of the cylinder body 1, and the pile body 3 connected with the stroke rod 23 is not contacted with the bottom plate of the cylinder body 1, so that only the cylinder body 1 and foundation soil are subjected to the pressure of the water pool in the whole sinking process of the water pool, and the pile body 3; when the dead weight of the pool is smaller than the buoyancy of the pool, the pool floats upwards, the cylinder body 1 is pulled to slide upwards, when the floating displacement of the pool exceeds the maximum early-stage sinking displacement, the bottom plate of the cylinder body 1 is in contact with the movable plate 21 and transmits the pulling force to the stroke rod 23, the stroke rod 23 transmits the pulling force to the pile body 3, the pile body 3 is subjected to the pulling force to participate in the work, and the tensile anti-floating effect is exerted. Based on this, this novel resistance to plucking pile cap differentiates two kinds of stress states of being drawn and being pressed of the pile body 3, make the pile body 3 withdraw from the work when being pressed, do not participate in the structural stress, but only play a role when resisting and drawing, this design has reduced the setting quantity of the pile body 3 effectively, has reduced the engineering cost by a wide margin, have apparent economic benefits; in addition, the top end of the cylinder body 1 is provided with the anchor bar 6, the anchor bar 6 can resist tensile force, the pile cap and the water pool are ensured not to be damaged by tensile force, and reliable connection is formed.
Further, connecting piece 22 and stroke pole 23 pass through the buckle and realize fixed connection with the draw-in groove, can be earlier with connecting piece and pile body 3's end plate 31 welded connection during the in-service use, later with stroke pole 23 assembly to connecting piece 22 in, so, can realize stroke pole 23 and pile body 3's high-speed joint, be favorable to promoting production efficiency.
Further, in order to ensure that the movable plate 21 can slide smoothly in the chamber 11, the chamber 11 is formed in a cylindrical shape, and the movable plate 21 is also formed in a cylindrical shape matching the chamber 11.
Alternatively, as a specific embodiment of the novel uplift pile cap provided by the present invention, the height of the cylinder body 1 is set to 50-60 mm in consideration of the settlement of the pool, and the length of the stroke rod 23 is set to 20-30 mm in consideration of the movable plate 21 having a certain thickness. In the present embodiment, the height of the cylinder 1 is preferably 50mm, and the length of the stroke rod 23 is preferably 20 mm.
Alternatively, as shown in fig. 1, as a specific embodiment of the novel uplift pile cap provided by the present invention, a shear wing ring 4 is provided at the top edge of the cylinder body 1, and a stiffening rib 5 is connected between the shear wing ring 4 and the side wall of the cylinder body 1. The wing ring 4 that shears and stiffening rib 5's setting has further promoted the connecting force between novel resistance to plucking pile cap and the pond, ensures the performance that novel resistance to plucking pile cap can be stable, and of course, the width of wing ring 4 that shears and the quantity of stiffening rib 5 all can be based on the single pile resistance to plucking bearing capacity calculation and confirm.
Specifically, in the embodiment of the invention, in order to ensure the normal use of the novel uplift pile cap, the cylinder body 1, the anchor bars 6, the shear wing rings 4 and the stiffening ribs 5 are all poured into the bottom plate of the underground water pool.
Optionally, as a specific implementation manner of the novel uplift pile cap provided by the invention, the cylinder body 1 and the piston 2 are preferably made of metal materials, and the raw materials are common, which is beneficial to reducing the production cost.
Further, the surfaces of the cylinder body 1 and the piston 2 are coated with an anticorrosive material. So, anticorrosive material can effectively prevent groundwater corruption piston 2 and pile body 3, of course, constructor also can rationally supply other anticorrosive measures to the corrosive effects of steel construction according to the ground soil and water on scene to guarantee that this novel resistance to plucking pile cap can normally work in design service life.
In summary, the novel uplift pile cap provided by the embodiment of the invention is provided with the cylinder and the piston, and the two stress states of the pile body under compression and tension are distinguished, so that a foundation bearing layer can be utilized to the maximum extent, the arrangement of the pile body is reduced, and the construction cost is effectively reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a novel resistance to plucking pile cap which characterized in that includes:
the cylinder body is internally provided with a cavity, a bottom plate of the cylinder body is provided with a through hole communicated with the cavity, and a top plate of the cylinder body is provided with an anchor bar;
the piston, the piston includes fly leaf and stroke pole, the fly leaf is located in the cavity and can follow the axial motion of cylinder body, the fly leaf with cylinder body clearance fit, the stroke pole wears to locate in the through-hole, the first end of stroke pole with fly leaf fixed connection, the second end of stroke pole is located outside the cylinder body for be connected with the pile body.
2. The novel uplift pile cap as claimed in claim 1, wherein the piston further comprises a connecting member, the connecting member is fixedly connected with the pile body, the connecting member is provided with a clamping groove, and the second end of the stroke rod is provided with a buckle matched with the clamping groove.
3. The new uplift pile cap according to claim 1, wherein the chamber is provided with a cylindrical shape, and the movable plate is also provided with a cylindrical shape.
4. The new uplift pile cap according to claim 1, wherein the height of the cylinder body is 50-60 mm.
5. The new uplift pile cap according to claim 4, wherein the length of the stroke rod is 20-30 mm.
6. The novel uplift pile cap according to claim 1, wherein a shear wing ring is arranged at the top edge of the cylinder body, and a stiffening rib is connected between the shear wing ring and the side wall of the cylinder body.
7. The new uplift pile cap according to claim 1, wherein the cylinder and the piston are made of metal materials.
8. The new uplift pile cap according to claim 7, wherein the surfaces of the cylinder and the piston are coated with an anti-corrosive material.
9. The new uplift pile cap according to claim 1, wherein more than two anchor bars are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600465.6A CN111677018A (en) | 2020-06-28 | 2020-06-28 | Novel uplift-resistant pile cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600465.6A CN111677018A (en) | 2020-06-28 | 2020-06-28 | Novel uplift-resistant pile cap |
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| Publication Number | Publication Date |
|---|---|
| CN111677018A true CN111677018A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010600465.6A Pending CN111677018A (en) | 2020-06-28 | 2020-06-28 | Novel uplift-resistant pile cap |
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| CN (1) | CN111677018A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418339A (en) * | 2011-09-28 | 2012-04-18 | 上海强劲地基工程股份有限公司 | Novel energy-saving anti-floating pile |
| CN206616587U (en) * | 2017-02-17 | 2017-11-07 | 深圳大学建筑设计研究院有限公司 | A kind of underground structrue engineering bottom plate dowel anti-floating sealing structure |
| CN107338793A (en) * | 2017-07-20 | 2017-11-10 | 重庆交通大学 | A kind of cast-in-place screw rod prestress pulling resistant stake and its construction method |
| CN110158667A (en) * | 2019-03-08 | 2019-08-23 | 北京市劳动保护科学研究所 | A kind of anti-floating vibration insulation structure and building |
| CN212271024U (en) * | 2020-06-28 | 2021-01-01 | 中国能源建设集团广东省电力设计研究院有限公司 | Novel uplift-resistant pile cap |
-
2020
- 2020-06-28 CN CN202010600465.6A patent/CN111677018A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418339A (en) * | 2011-09-28 | 2012-04-18 | 上海强劲地基工程股份有限公司 | Novel energy-saving anti-floating pile |
| CN206616587U (en) * | 2017-02-17 | 2017-11-07 | 深圳大学建筑设计研究院有限公司 | A kind of underground structrue engineering bottom plate dowel anti-floating sealing structure |
| CN107338793A (en) * | 2017-07-20 | 2017-11-10 | 重庆交通大学 | A kind of cast-in-place screw rod prestress pulling resistant stake and its construction method |
| CN110158667A (en) * | 2019-03-08 | 2019-08-23 | 北京市劳动保护科学研究所 | A kind of anti-floating vibration insulation structure and building |
| CN212271024U (en) * | 2020-06-28 | 2021-01-01 | 中国能源建设集团广东省电力设计研究院有限公司 | Novel uplift-resistant pile cap |
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