CN104631423A - Structure for improving bearing capacity of foundation soil - Google Patents
Structure for improving bearing capacity of foundation soil Download PDFInfo
- Publication number
- CN104631423A CN104631423A CN201410841366.1A CN201410841366A CN104631423A CN 104631423 A CN104631423 A CN 104631423A CN 201410841366 A CN201410841366 A CN 201410841366A CN 104631423 A CN104631423 A CN 104631423A
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- China
- Prior art keywords
- circular cone
- cone
- bearing capacity
- foundation soil
- structure improved
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention aims at providing a structure for improving bearing capacity of foundation soil. The structure can meet the requirement that upper loads of high buildings are large. The structure comprises a taper block layer composed of a plurality of taper blocks (8), and the taper blocks (8) are transversely arranged in parallel. Each taper block (8) comprises a cone portion (3) and a pile foot portion (4), wherein the cone portion (3) is located in the upper portion of each taper block, and the pile foot portion (4) is located in the lower portion of each taper block and is located below the corresponding cone portion (3). An included angle (6) between the outer surface of the cant of each cone portion and a contact face between each cone portion and the corresponding pile foot portion is set in the manner that transverse component force of positive pressure, exerted on the cants of the cone portions, of materials between adjacent taper blocks is larger than longitudinal component force of the positive pressure, exerted on the cants of the cone portions, of materials between adjacent taper blocks.
Description
Technical field
The present invention relates to the technology of basement process.
Background technology
In the past, people know the structure having the bearing capacity of foundation soil comprising circular cone (being commonly referred to as in the industry " gyro stake ") shown in Fig. 4 to improve, it comprises circular cone layer, transversely, as shown in Figure 1, this circular cone layer comprises multiple circular cones 8 arranged side by side, this circular cone 8 comprises bullet 3, this bullet 3 is positioned at the top of circular cone 8, in the below of bullet 3, be formed with footing portion 4, the bottom in footing portion 4 has pile top 5, at the end face of bullet 3, be provided with top board 2, above-mentioned pile top 5, footing portion 4, bullet 3 is connected by the connecting reinforcement 1 passed in the middle of them with top board 2, as shown in Figure 4, the contact surface place of the corresponding footing portion 4 in multiple circular cone 8 be transversely disposed adjacent and the bottom of corresponding cone portion 3 arranges bottom spacer bars net 10, as shown in Figure 4, the contact surface place of the corresponding footing portion 4 in multiple circular cone 8 be transversely disposed adjacent and the bottom of corresponding cone portion 3 arranges bottom spacer bars net 10, the conical surface exterior angle α 1 of circular cone 8, namely, angle between the external surface of the conical surface and horizontal plane, as shown in the label 6 in Fig. 1, be set in 45 °, thus, in normal pressure on the lateral surface acting on the conical surface, horizontal component is less, namely, the supporting force of circular cone 8 is not based on horizontal component, in its result, in general, adjacent circular cone 8 interaction is in the horizontal direction more weak, if do not consider that the contact effect of steel mesh reinforcement 7 and bottom spacer bars net 10 is fixed at top, then circular cone 8 is more prone to bear upper load F independently, total tune between circular cone 8 is inadequate, like this, the structure that above-mentioned bearing capacity of foundation soil improves is merely able to bear less upper load, the requirement of low buildings can only be met, the soft foundation of low bearing capacity cannot be met, the requirement of the large load of high-rise building.
The content of invention
The object of the present invention is to provide the structure that a kind of bearing capacity of foundation soil improves, it meets high-lager building, the requirement that upper load is large, bearing power increase.
To achieve these goals, the present invention relates to the structure that a kind of bearing capacity of foundation soil improves, the structure that this bearing capacity of foundation soil improves comprises circular cone layer, this circular cone layer is made up of multiple circular cone, the plurality of circular cone along this circular cone layer transverse direction and be set up in parallel, this circular cone comprises cone portion, and this cone portion is positioned at the top of circular cone, footing portion, this footing portion is positioned at the bottom of circular cone, and be positioned at the below of above-mentioned cone portion, transversely be furnished with interblock material between the adjacent conical block be set up in parallel, the inclined-plane of the cone portion of the corresponding circular cone from the transverse direction of the structure improved along above-mentioned bearing capacity of foundation soil and in the multiple circular cones be set up in parallel, along clockwise direction, the transverse direction of structure improved along above-mentioned bearing capacity of foundation soil and the inclined-plane of cone portion of corresponding circular cone in the multiple circular cones be set up in parallel and the angle between the contact surface between this cone portion and footing portion, namely, angle between the external surface on the inclined-plane of cone portion and the contact surface between this cone portion and footing portion is greater than longitudinal component of normal pressure according to the transverse component of interblock material to the normal pressure of the external surface on the inclined-plane of cone portion between adjacent circular cone, mutually laterally to act on more synergistically between adjacent circular cone, the mode more mutually leaning on supporting sets, here, transverse direction in the transverse component of normal pressure refers to the longitudinal direction with circular cone, namely, the direction that the bearing of trend in footing portion is perpendicular.
According to the present invention, because the transverse component of interblock material to the normal pressure of the external surface on the inclined-plane of cone portion is greater than longitudinal component of normal pressure, overall coordination between such circular cone increases greatly, circular cone closely acts on each other, more mutually rely on together, circular cone is not bear upper load individually, and multiple circular cones of every layer more mutually synergistically, common participation is stressed, globality is stronger, be more suitable for soft foundation, be suitable for the requirement of the high-rise building of large load.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, periphery in the structure shown here, arranges large-sized circular cone, and interior zone in the structure shown here arranges undersized circular cone.
According to such scheme, by being positioned at large-sized circular cone of periphery, resist the horizontal thrust laterally produced by the entirety of the synergistic multiple small size circular cone of occurred level, horizontal restrain can be carried out like this to the small size circular cone of inside, the globality of this structure is stronger, can bear larger upper load.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, this structure is divided into multiple unit, at the periphery of each unit, arrange large-sized circular cone, at the interior zone of each unit, arrange undersized circular cone, that is, large-sized circular cone is arranged according to certain intervals between the region of undersized circular cone.
According to such scheme, by being positioned at large-sized circular cone of unit periphery, resist the horizontal thrust laterally produced by the synergistic entirety being positioned at multiple small size circular cones of unit inside of occurred level, horizontal restrain can be carried out to the small size circular cone of unit inside like this, larger upper load can be born.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, the cone portion in above-mentioned circular cone is circular cone body.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, angle is greater than 50 °.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, along the bearing of trend in footing portion, multiple above-mentioned circular cone layer is set.
According to such scheme, by arranging multiple above-mentioned circular cone layer up and down, can further improve bearing capacity.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, the material between adjacent circular cone is undisturbed soil.Running into the occasion of pan soil, using undisturbed soil as the material between adjacent circular cone, construction can facilitated.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, the material between adjacent circular cone is inserts, and this inserts is rubble or or graded sand and stone.Running into the occasion compared with weak soil, replacing the original soil body, the material between adjacent circular cone is inserts, this inserts be rubble or or graded sand and stone, make circular cone like this, form a rigidity gradient between inserts and foundation soil body, obtain higher bearing capacity.
Best, in the structure that bearing capacity of foundation soil of the present invention improves, circular cone is made up of concrete.
Brief description of drawings
Fig. 1 is the elevation representing existing single circular cone;
Fig. 2 is the elevation of the single circular cone represented in the structure improved as the bearing capacity of foundation soil of one embodiment of the present of invention;
Fig. 3 is the part elevation figure representing the structure improved as the bearing capacity of foundation soil of one embodiment of the present of invention;
Fig. 4 is the part elevation figure representing the structure that the bearing capacity of foundation soil of prior art improves;
Fig. 5 is the facade view of the entirety representing the structure improved as the bearing capacity of foundation soil of one embodiment of the present of invention;
Fig. 6 is for representing the top view of the entirety of the structure improved as the bearing capacity of foundation soil of one embodiment of the present of invention shown in Fig. 5.
Detailed description of the invention
As represent the part elevation figure of the structure improved as the bearing capacity of foundation soil of one embodiment of the present of invention Fig. 3 shown in, the structure that bearing capacity of foundation soil of the present invention improves comprises multiple circular cone 8 be transversely disposed adjacent, the end face of multiple circular cone 8 be transversely disposed adjacent is provided with top and fixes steel mesh reinforcement 7, the multiple circular cones 8 be disposed adjacent are connected, strengthen globality, as shown in Figure 2, single circular cone 8 comprises cone portion 3, such as, conus portion 3, this cone portion 3 is positioned at the top of circular cone 8, footing portion 4, this footing portion 4 is positioned at the bottom of circular cone 8, and be positioned at the below of above-mentioned cone portion 3, at the transversely adjacent conical block 8 be set up in parallel, interblock material 9 is furnished with between 8, as, undisturbed soil between inserts or stake between the stake adopting industry common name, at the end face of bullet 3, be provided with top board 2, such as, plectane, the bottom in footing portion 4 has pile top 5, above-mentioned pile top 5, footing portion 4, cone portion 3, top board 2 is connected by the connecting reinforcement 1 passed in the middle of them, as shown in Figure 3, at multiple circular cone 8 be transversely disposed adjacent, the contact surface place of the corresponding footing portion 4 in 8 and the bottom of corresponding cone portion 3 arranges bottom spacer bars net 10, angle α 2 between the external surface on the inclined-plane of cone portion 3 and the contact surface between this cone portion 3 and footing portion 4, as shown in the label 6 in Fig. 2, according to adjacent circular cone 8, the transverse component of interblock material to the normal pressure of the external surface on the inclined-plane of cone portion 3 between 8 is greater than longitudinal component of normal pressure, so that adjacent circular cone 8, mutually laterally act on more synergistically between 8, the mutual mode leaning on supporting sets, here, transverse direction in the transverse component of normal pressure refers to the longitudinal direction with circular cone 8, namely, the direction that the bearing of trend in footing portion 4 is perpendicular.
As shown in Figure 3, the angle α 1 between the external surface on the inclined-plane of the cone portion 3 in the circular cone 8 in the past shown in Fig. 4 and the contact surface between this cone portion 3 and footing portion 4 is greater than as the angle α 2 between the external surface on the inclined-plane of the cone portion 3 in the circular cone 8 of embodiments of the invention and the contact surface between this cone portion 3 and footing portion 4, this angle α 2 such as, be set in 60 °, and the angle α 1 of the circular cone 8 of the prior art shown in Fig. 4 is generally set in 45 ° or be less than the degree of 45 °, in this occasion, horizontal component in normal pressure on the external surface on the inclined-plane of the cone portion 3 acted in circular cone 8 of the present invention in Fig. 3 is greater than vertical stress component, in comparison, horizontal component in normal pressure on the external surface acting on the inclined-plane of the cone portion 3 in circular cone 8 of the prior art in Fig. 4 is equal to or less than vertical stress component., figure 3 illustrates the horizontal component f of inclined-plane to interblock material here, figure 4 illustrates the horizontal component f of inclined-plane to interblock material.By mechanical analysis above, according to the present invention, transfer adjacent circular cone 8 further, material between 8 participates in stressed, in the horizontal direction, adjacent circular cone 8, mutually act synergistically between 8, globality is strengthened further, like this, the upper load F that the structure that the bearing capacity of foundation soil that the upper load F that the structure that the bearing capacity of foundation soil of the embodiment shown in Fig. 3 improves is born is greater than the embodiment shown in Fig. 4 improves is born, so, according to the present invention, the bearing capacity of the structure that bearing capacity of foundation soil improves significantly improves.
As shown in Figure 5 and Figure 6, from plane, the structure division improved as the bearing capacity of foundation soil of one embodiment of the present of invention has 2 unit, the intra-zone of the unit of on the left side, intermediate arrangement has 16 small sizes, or the circular cone 82 of minor diameter, the intra-zone of unit on the right, intermediate arrangement has 20 small sizes, or the circular cone 82 of minor diameter, between the unit of on the left side and the unit on the right, namely, their boundary common land is furnished with 2 large scales, or large diameter circular cone 81, the left side of the unit of on the left side in addition, be furnished with 2 large scales, or large diameter circular cone 81, the right side of unit on the right, be furnished with 2 large scales, or large diameter circular cone 81.As shown in Figure 5, from facade, the left side of the unit of on the left side, be furnished with 2 large scales up and down, or large diameter circular cone 81, the right side of unit on the right, be furnished with 1 large scale, or large diameter circular cone 81, between the unit of on the left side and the unit on the right, namely, their boundary common land is furnished with 1 (being actually a row) large scale, or large diameter circular cone 81, the intra-zone of the unit of on the left side, intermediate arrangement has 4 row's small sizes, or the circular cone 82 of minor diameter, the intra-zone of unit on the right, intermediate arrangement has 5 small sizes, or the circular cone 82 of minor diameter, due on the little border of each unit, namely periphery adopts large scale, or large diameter circular cone 81, arrange small size therein, or the circular cone 82 of minor diameter, like this can be inner at each unit, by circular cone 81, resist the horizontal thrust laterally produced by the entirety of the synergistic multiple circular cone 82 of occurred level, namely, by circular cone 81, better horizontal restrain is carried out to each unit inside, obtain the effect of the globality of each unit.
Claims (9)
1. the structure improved of a bearing capacity of foundation soil, the structure that this bearing capacity of foundation soil improves comprises circular cone layer, and this circular cone layer is made up of multiple circular cone, the plurality of circular cone along this circular cone layer transverse direction and be set up in parallel, this circular cone comprises cone portion, and this cone portion is positioned at the top of circular cone, footing portion, this footing portion is positioned at the bottom of circular cone, and be positioned at the below of above-mentioned cone portion, transversely be furnished with interblock material between the adjacent conical block be set up in parallel, the inclined-plane of the cone portion of the corresponding circular cone from the transverse direction of the structure improved along above-mentioned bearing capacity of foundation soil and in the multiple circular cones be set up in parallel, along clockwise direction, the transverse direction of structure improved along above-mentioned bearing capacity of foundation soil and the inclined-plane of cone portion of corresponding circular cone in the multiple circular cones be set up in parallel and the angle between the contact surface between this cone portion and footing portion, namely, angle between the external surface on the inclined-plane of cone portion and the contact surface between this cone portion and footing portion is greater than longitudinal component of normal pressure according to the transverse component of interblock material to the normal pressure of the external surface on the inclined-plane of cone portion between adjacent circular cone, mutually laterally to act on more synergistically between adjacent circular cone, the mode more mutually leaning on supporting sets, here, transverse direction in the transverse component of normal pressure refers to the longitudinal direction with circular cone, namely, the direction that the bearing of trend in footing portion is perpendicular.
2. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that periphery in the structure shown here, arranges large-sized circular cone, interior zone in the structure shown here, arrange undersized circular cone.
3. the structure improved of bearing capacity of foundation soil according to claim 2, this structure is it is characterized in that to be divided into multiple unit, at the periphery of each unit, arrange large-sized circular cone, at the interior zone of each unit, arrange undersized circular cone, that is, large-sized circular cone is arranged according to certain intervals between the region of undersized circular cone.
4. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that the cone portion in above-mentioned circular cone is circular cone body.
5. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that angle is greater than 50 °.
6. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that the bearing of trend along footing portion, arranges multiple above-mentioned circular cone layer.
7. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that the material between adjacent circular cone is undisturbed soil.
8. the structure improved of bearing capacity of foundation soil according to claim 1, it is characterized in that the material between adjacent circular cone is inserts, this inserts is rubble or graded sand and stone.
9. the structure improved of bearing capacity of foundation soil according to claim 1, is characterized in that circular cone is made up of concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841366.1A CN104631423A (en) | 2014-12-31 | 2014-12-31 | Structure for improving bearing capacity of foundation soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841366.1A CN104631423A (en) | 2014-12-31 | 2014-12-31 | Structure for improving bearing capacity of foundation soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104631423A true CN104631423A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410841366.1A Pending CN104631423A (en) | 2014-12-31 | 2014-12-31 | Structure for improving bearing capacity of foundation soil |
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| Country | Link |
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| CN (1) | CN104631423A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917396A (en) * | 2017-02-16 | 2017-07-04 | 东北大学 | A kind of taper foundation reinforcement method |
| CN109738117A (en) * | 2019-02-01 | 2019-05-10 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of drum reaction brake test bench device for dynamically detecting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120012358A (en) * | 2010-07-31 | 2012-02-09 | 김성필 | Foundation construction methods |
| CN204626373U (en) * | 2014-12-31 | 2015-09-09 | 北京支盘地工科技开发中心 | The structure that a kind of bearing capacity of foundation soil improves |
-
2014
- 2014-12-31 CN CN201410841366.1A patent/CN104631423A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120012358A (en) * | 2010-07-31 | 2012-02-09 | 김성필 | Foundation construction methods |
| CN204626373U (en) * | 2014-12-31 | 2015-09-09 | 北京支盘地工科技开发中心 | The structure that a kind of bearing capacity of foundation soil improves |
Non-Patent Citations (1)
| Title |
|---|
| 唐业清等: "陀螺桩的原理及应用", 《探矿工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917396A (en) * | 2017-02-16 | 2017-07-04 | 东北大学 | A kind of taper foundation reinforcement method |
| CN106917396B (en) * | 2017-02-16 | 2018-12-21 | 东北大学 | A kind of taper foundation reinforcement method |
| CN109738117A (en) * | 2019-02-01 | 2019-05-10 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of drum reaction brake test bench device for dynamically detecting |
| CN109738117B (en) * | 2019-02-01 | 2023-08-15 | 广东省计量科学研究院（华南国家计量测试中心） | Dynamic detection device for roller counter-force type braking inspection bench |
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Application publication date: 20150520 |
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