CN112030933B - Gravel pile foundation structure and construction method thereof - Google Patents
Gravel pile foundation structure and construction method thereof Download PDFInfo
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- CN112030933B CN112030933B CN202010970434.XA CN202010970434A CN112030933B CN 112030933 B CN112030933 B CN 112030933B CN 202010970434 A CN202010970434 A CN 202010970434A CN 112030933 B CN112030933 B CN 112030933B
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- cylinder
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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
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- Agronomy & Crop Science (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a gravel pile foundation structure which comprises a cuboid beam, wherein an arched beam is fixed at the center of the bottom surface of the cuboid beam, a cuboid fixed block is vertically fixed at the center of the inner side surface of the arched beam, two first cylinder counter bores are arranged on the outer side surface of the arched beam and symmetrically distributed on two sides of the cuboid fixed block, two second cylinder counter bores are arranged on the inner side surface of the arched beam and symmetrically distributed on two sides of the cuboid fixed block, one end of a cylinder hole is communicated with the first cylinder counter bore, the other end of the cylinder hole is communicated with the second cylinder counter bore, an upper elastic piece is sleeved in the first cylinder counter bore, a lower elastic piece is sleeved in the second cylinder counter bore, one end of a first supporting rod is connected with the edge of the cuboid beam, and the other end of the first supporting rod is connected with the upper elastic piece. The invention can improve the defects of the prior art, not only improves the bearing capacity, but also avoids deformation and damage.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a gravel pile foundation structure and a construction method thereof.
Background
With the development of economic construction and the enlargement of basic construction scale, the foundation treatment technology in China is developed rapidly. The gravel pile is a composite foundation reinforcing pile made of gravel (pebbles) as a main material. For guarantee bearing strength, the gravel pile often need be assisted with the ground, but the general bearing capacity of present gravel pile ground is not high, or the one-sided bearing capacity that improves, leads to foundation structure yielding to damage, and practical function is not good.
Disclosure of Invention
The invention aims to provide a gravel pile foundation structure and a construction method thereof, which can overcome the defects of the prior art, improve the bearing capacity and avoid deformation and damage.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A gravel pile foundation structure comprises a cuboid crossbeam, and is characterized in that an arched beam is fixed at the center of the bottom surface of the cuboid crossbeam, a cuboid fixed block is vertically fixed at the center of the inner side surface of the arched beam, two first cylinder counter bores are arranged on the outer side surface of the arched beam and symmetrically distributed on two sides of the cuboid fixed block, two second cylinder counter bores are arranged on the inner side surface of the arched beam and symmetrically distributed on two sides of the cuboid fixed block, one end of a cylinder hole is communicated with the first cylinder counter bore, the other end of the cylinder hole is communicated with the second cylinder counter bore, an upper elastic piece is sleeved in the first cylinder counter bore, a lower elastic piece is sleeved in the second cylinder counter bore, one end of a first supporting rod is connected with the edge of the cuboid crossbeam, the other end of the first supporting rod is connected with the upper elastic piece, one end of a second supporting rod is connected with the edge of the side surface of the cuboid fixed block, the other end of the second supporting rod is connected with the lower elastic piece, one end of the third supporting rod is connected with the arched beam, and the other end of the third supporting rod is connected with the side edge of the cuboid fixed block.
Preferably, the upper elastic piece comprises a cylinder upper elastic piece body, and a third cylinder counter bore is formed in the bottom surface of the cylinder upper elastic piece body.
Preferably, the lower elastic piece comprises a cylinder lower elastic piece body, a cylinder inserting key is fixed to the top face of the cylinder lower elastic piece body and sleeved in a third cylinder counter bore, a circular truncated cone fixing block is fixed to the bottom face of the cylinder lower elastic piece body, a cylinder fixing block is fixed to the bottom face of the circular truncated cone fixing block, two cuboid clamping keys are connected to the side edge of the cylinder fixing block through first connecting shaft symmetry shafts, one end of the elastic piece is connected with the cuboid clamping keys, and the other end of the elastic piece is connected with the side face of the cylinder fixing block.
Preferably, the first supporting rod comprises a cylindrical supporting rod body, a cylindrical groove is formed in the top surface of the cylindrical supporting rod body, and the cylindrical groove is in compression joint with the cuboid clamping key.
Preferably, the top surface of the counter bore of the third cylinder is provided with a triangular pyramid groove, the top surface of the cylindrical key is fixed with a triangular pyramid protrusion, and the triangular pyramid protrusion is in compression joint with the triangular pyramid groove.
Preferably, the cylindrical plug key is sleeved with a second spring.
A construction method of the gravel pile foundation structure comprises the following steps: the method comprises the steps of prefabricating a cuboid crossbeam and an arched beam with a first cylinder counter bore, a cylinder hole and a second cylinder counter bore, installing an upper elastic piece and a lower elastic piece on the arched beam, connecting and installing a cuboid fixed block, a third supporting rod and a second supporting rod with the arched beam, fixing the bottom of the arched beam on the installation position of a gravel pile through pouring concrete, and finally welding the cuboid crossbeam on the top of the arched beam to complete foundation installation.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the cuboid crossbeam is acted by a vertical acting force and acts on the center of the arched beam, two stressed ends of the arched beam have opening trends, meanwhile, the cuboid crossbeam pushes the acting force to push the upper elastic piece along the first supporting rod, on one hand, the upper elastic piece pushes the lower elastic piece, so that the cuboid clamp key compresses the elastic piece under the action of the cylindrical groove, the cylindrical groove and the elastic piece realize further compression joint, and the buffering effect is realized, on the other hand, the bottom surface of the body of the cylindrical upper elastic piece acts on the bottom surface of the counter bore of the first cylinder, so that the arched beam is compressed, and the second supporting rod is further compressed, meanwhile, the third supporting rod supports two ends of the arched beam, the arched beam is prevented from being excessively deformed, the expansion deformation of the arched beam is avoided, and the damage caused by excessive deformation is effectively prevented while the bearing effect of the arched beam is ensured. The triangular pyramid protrusion and the triangular pyramid groove are in pressure connection, so that accurate alignment of the upper elastic piece and the lower elastic piece is realized, and good work of the invention is facilitated. The cylinder inserting key is sleeved with the second spring, so that when the upper elastic piece compresses the lower elastic piece, the upper elastic piece compresses the second spring to further increase the buffer, and the stability of the invention is facilitated, so that the bearing effect of the invention is ensured on one hand, and the damage of the invention due to excessive deformation is avoided on the other hand.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Fig. 2 is a block diagram of an upper spring in an embodiment of the present invention.
Fig. 3 is a block diagram of a lower spring in an embodiment of the present invention.
Fig. 4 is a structural view of an elastic member according to an embodiment of the present invention.
Fig. 5 is a structural view of a first support bar according to an embodiment of the present invention.
Fig. 6 is a structural view of a first rectangular parallelepiped connecting block in an embodiment of the present invention.
In the figure: 1. a rectangular parallelepiped beam; 2. an arched beam; 3. a first cylindrical counterbore; 4. a cylindrical bore; 5. a spring-up part; 6. a second cylinder counter bore; 7. a lower spring piece; 8. a first support bar; 9. a second support bar; 10. a cuboid fixed block; 11. a third support bar; 12. a second cuboid groove; 13. a first cuboid groove; 14. a third rectangular connecting block; 15. a second rectangular connecting block; 16. a first triangular prism fixture block; 17. a first rectangular connecting block; 51. an upper spring body; 52. a third cylinder counterbore; 53. a triangular pyramid groove; 71. a cylindrical lower spring body; 72. a round table fixing block; 73. a cylindrical fixing block; 74. inserting a key into the cylinder; 75. triangular pyramid protrusions; 76. a second spring; 77. a first connecting shaft; 78. a rectangular solid card key; 79. an elastic member; 791. a telescopic rod; 792. a second connecting shaft; 793. an arc-shaped hole; 794. a third connecting shaft; 795. a first spring; 81. a cylindrical support rod body; 82. a cylindrical recess.
Detailed Description
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
Referring to fig. 1-6, one embodiment of the invention comprises a rectangular cross beam 1, and is characterized in that an arched beam 2 is fixed at the center of the bottom surface of the rectangular cross beam 1, a rectangular fixing block 10 is vertically fixed at the center of the inner side surface of the arched beam 2, two first cylinder counter bores 3 are arranged on the outer side surface of the arched beam 2, the two first cylinder counter bores 3 are symmetrically distributed on two sides of the rectangular fixing block 10, two second cylinder counter bores 6 are symmetrically distributed on two sides of the rectangular fixing block 10, one end of a cylinder hole 4 is communicated with the first cylinder counter bore 3, the other end of the cylinder hole 4 is communicated with the second cylinder counter bore 6, the first cylinder counter bore 3 is sleeved with an upper elastic piece 5, the second cylinder counter bore 6 is sleeved with a lower elastic piece 7, one end of a first support rod 8 is connected with the edge of the rectangular cross beam 1, the other end of the first support rod 8 is connected with the upper elastic piece 5, one end of a second supporting rod 9 is connected with the side edge of a cuboid fixed block 10, the other end of the second supporting rod 9 is connected with a lower elastic piece 7, one end of a third supporting rod 11 is connected with an arched beam 2, the other end of the third supporting rod 11 is connected with the side edge of the cuboid fixed block 10, the upper elastic piece 5 comprises a cylinder upper elastic piece body 51, a third cylinder counter bore 52 is arranged at the bottom surface of the cylinder upper elastic piece body 51, the lower elastic piece 7 comprises a cylinder lower elastic piece body 71, a cylinder inserting key 74 is fixed at the top surface of the cylinder lower elastic piece body 71, the cylinder inserting key 74 is sleeved in the third cylinder counter bore 52, a circular truncated cone fixed block 72 is fixed at the bottom surface of the cylinder lower elastic piece body 71, a cylinder fixed block 73 is fixed at the bottom surface of the circular truncated cone fixed block 72, two cuboid clamping keys 78 are symmetrically axially connected at the side edge of the cylinder fixed block 73 through a first connecting shaft 77, one end of the elastic piece 79 is connected with the cuboid clamping key 78, the other end of the elastic member 79 is connected with the side surface of the cylinder fixing block 73, the first supporting rod 8 comprises a cylinder supporting rod body 81, a cylinder groove 82 is arranged on the top surface of the cylinder supporting rod body 81, and the cylinder groove 82 is in compression joint with the cuboid clamping key 78. The top surface of the third cylinder counter bore 52 is provided with a triangular pyramid groove 53, the top surface of the cylinder inserting key 74 is fixed with a triangular pyramid protrusion 75, and the triangular pyramid protrusion 75 is in compression joint with the triangular pyramid groove 53. The cylinder plug 74 is sleeved with a second spring 76. When the invention works, the cuboid crossbeam 1 is acted by vertical force and acts on the center of the arched beam 2, the two stressed ends of the arched beam 2 have opening tendency, meanwhile, the cuboid beam 1 pushes the acting force to push the upper elastic piece 5 along the first supporting rod 8, on one hand, the upper elastic piece 5 pushes the lower elastic piece 7, so that the rectangular solid snap keys 78 compress the elastic members 79 under the action of the cylindrical grooves 82, the cylindrical grooves 82 and the elastic members 79 are further pressed and connected, the buffer action is realized, on the other hand, the bottom surface of the upper elastic member body 51 of the cylinder acts on the bottom surface of the counter bore 3 of the first cylinder, thereby compressing the arched beam 2 and further compressing the second support bar 9, and at the same time, the third support bar 11 supports both ends of the arched beam 2, preventing the arched beam 2 from being excessively deformed, therefore, the stretching deformation of the bearing is avoided, and the bearing effect is ensured while the damage caused by excessive deformation is effectively prevented. The triangular pyramid protrusions 75 and the triangular pyramid grooves 53 are in compression joint, so that accurate alignment of the upper elastic piece 5 and the lower elastic piece 7 is realized, and good work of the invention is facilitated. The cylindrical insertion key 74 is sleeved with the second spring 76, so that when the upper elastic piece 5 compresses the lower elastic piece 7, the upper elastic piece 5 compresses the second spring 76 to further increase the buffer, which is beneficial to the stability of the invention, thereby ensuring the bearing effect of the invention on one hand and avoiding the damage of the invention due to excessive deformation on the other hand.
In addition, elastic component 79 includes telescopic link 791, and telescopic link 791 has cup jointed first spring 795, and cuboid card key 78 side is equipped with arc hole 793, and telescopic link 791 one end is passed through second connecting axle 792 and cylinder fixed block 73 coupling, and the telescopic link 791 other end is connected with third connecting axle 794, and third connecting axle 794 cup joints in arc hole 793. Cuboid card key 78 is when cylinder recess 82 effect compression elastic component 79, and cuboid card key 78 is rotatory along first connecting axle 77, and simultaneously, cuboid card key 78 compresses first spring 795 on the one hand, and on the other hand telescopic link 791 rotates along second connecting axle 792, can make elastic component 79 realize elastic support's angle and support position in step when buffering cuboid card key 78 to realize good buffering effect.
The side border symmetry of cuboid fixed block 10 is fixed with two first cuboid connecting blocks 17, first cuboid connecting block 17 top surface is equipped with first cuboid recess 13, the side that cuboid fixed block 10 was kept away from to first cuboid connecting block 17 is equipped with second cuboid recess 12, first cuboid recess 13 has cup jointed second cuboid connecting block 15, 15 top surfaces of second cuboid connecting block are connected with second bracing piece 9, 15 bottom surfaces of second cuboid connecting block are fixed with first triangular prism fixture block 16, second cuboid recess 12 has cup jointed third cuboid connecting block 14, the side and the third bracing piece 11 that cuboid fixed block 10 was kept away from to second cuboid recess 12, the side that third cuboid connecting block 14 is close to cuboid fixed block 10 is fixed with second triangular prism fixture block, second triangular prism fixture block and the 16 crimping of first triangular prism fixture block. When the arched beam 2 deforms and compresses the second supporting rod 9, the second supporting rod 9 is stressed to push the second cuboid connecting block 15 to further push the first triangular prism clamping block 16, so that the second triangular prism clamping block is extruded, the third cuboid connecting block 14 is pushed, so that the third supporting rod 11 further supports two ends of the arched beam 2, the deformation of the arched beam 2 is prevented, the larger the arch beam 2 compresses the second supporting rod 9, the larger the third supporting rod 11 supports the arched beam 2, and the organic matters are unified, so that the bearing capacity of the invention is increased, and the damage of the arched beam 2 caused by deformation is prevented.
A construction method of the gravel pile foundation structure comprises the following steps: firstly prefabricating a cuboid crossbeam 1 and an arched beam 2 with a first cylinder counter bore 3, a cylinder hole 4 and a second cylinder counter bore 6, then installing an upper elastic piece 5 and a lower elastic piece 7 on the arched beam 2, then connecting and installing a cuboid fixed block 10, a third supporting rod 11 and a second supporting rod 9 with the arched beam 2, then fixing the bottom of the arched beam 2 on the installation position of a gravel pile through pouring concrete, and finally welding the cuboid crossbeam 1 on the top of the arched beam 2 to complete the installation of a foundation.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a gravel pile foundation structure, includes cuboid crossbeam (1), its characterized in that: an arched beam (2) is fixed at the center of the bottom surface of a cuboid beam (1), a cuboid fixed block (10) is vertically fixed at the center of the inner side surface of the arched beam (2), two first cylinder counter bores (3) are arranged on the outer side surface of the arched beam (2), the two first cylinder counter bores (3) are symmetrically distributed on two sides of the cuboid fixed block (10), two second cylinder counter bores (6) are arranged on the inner side surface of the arched beam (2), the two second cylinder counter bores (6) are symmetrically distributed on two sides of the cuboid fixed block (10), one end of a cylinder hole (4) is communicated with the first cylinder counter bore (3), the other end of the cylinder hole (4) is communicated with the second cylinder counter bore (6), an upper elastic piece (5) is sleeved on the first cylinder counter bore (3), a lower elastic piece (7) is sleeved on the second cylinder counter bore (6), one end of a first supporting rod (8) is connected with the edge of the cuboid beam (1), the other end of the first supporting rod (8) is connected with the upper elastic piece (5), one end of the second supporting rod (9) is connected with the side edge of the cuboid fixed block (10), the other end of the second supporting rod (9) is connected with the lower elastic piece (7), one end of the third supporting rod (11) is connected with the arched beam (2), and the other end of the third supporting rod (11) is connected with the side edge of the cuboid fixed block (10).
2. A granular stone pile foundation structure as claimed in claim 1, characterized in that: the upper elastic piece (5) comprises a cylindrical upper elastic piece body (51), and a third cylindrical counter bore (52) is formed in the bottom surface of the cylindrical upper elastic piece body (51).
3. A granular stone pile foundation structure as claimed in claim 2, characterized in that: bullet spare (7) are including bullet spare body (71) under the cylinder, bullet spare body (71) top surface is fixed with cylinder inserted key (74) under the cylinder, cylinder inserted key (74) cup joint in third cylinder counter bore (52), bullet spare body (71) bottom surface is fixed with round platform fixed block (72) under the cylinder, round platform fixed block (72) bottom surface is fixed with cylinder fixed block (73), cylinder fixed block (73) side border has two cuboid card keys (78) through first connecting axle (77) symmetry coupling, elastic component (79) one end is connected with cuboid card key (78), elastic component (79) other end is connected with cylinder fixed block (73) side.
4. A granular stone pile foundation structure as claimed in claim 3, characterized in that: the top surface of the third cylinder counter bore (52) is provided with a triangular pyramid groove (53), the top surface of the cylinder inserting key (74) is fixed with a triangular pyramid protrusion (75), and the triangular pyramid protrusion (75) is in compression joint with the triangular pyramid groove (53).
5. A granular stone pile foundation structure as claimed in claim 4, characterized in that: the cylindrical plug key (74) is sleeved with a second spring (76).
6. A method of constructing a gravel pile foundation structure according to any one of claims 1 to 5, comprising the steps of: firstly prefabricating a cuboid beam (1) and an arched beam (2) with a first cylinder counter bore (3), a cylinder hole (4) and a second cylinder counter bore (6), then installing an upper elastic piece (5) and a lower elastic piece (7) on the arched beam (2), then connecting and installing a cuboid fixed block (10), a third supporting rod (11) and a second supporting rod (9) with the arched beam (2), then fixing the bottom of the arched beam (2) on the installation position of a gravel pile through pouring concrete, and finally welding the cuboid beam (1) on the top of the arched beam (2) to complete the installation of the foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970434.XA CN112030933B (en) | 2020-09-16 | 2020-09-16 | Gravel pile foundation structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970434.XA CN112030933B (en) | 2020-09-16 | 2020-09-16 | Gravel pile foundation structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112030933A CN112030933A (en) | 2020-12-04 |
| CN112030933B true CN112030933B (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010970434.XA Expired - Fee Related CN112030933B (en) | 2020-09-16 | 2020-09-16 | Gravel pile foundation structure and construction method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625460A (en) * | 2016-03-11 | 2016-06-01 | 广州市建筑科学研究院有限公司 | Damping device used for connecting pile foundation and bearing platform and construction method of damping device |
| CN206635787U (en) * | 2017-01-22 | 2017-11-14 | 北京东地岩土工程有限公司 | A kind of composite foundation mattress layer |
| CN208056084U (en) * | 2018-03-09 | 2018-11-06 | 李博 | A kind of architecture foundation pile with shock absorbing effect |
| KR20190069991A (en) * | 2017-12-12 | 2019-06-20 | 김경호 | Seismic isolation rubber pad for micro-pile and construction method of micro-pile using the same |
| CN211340829U (en) * | 2019-09-19 | 2020-08-25 | 蒋小娟 | Building pile foundation location is sheared and is born and inlay solid structure |
| CN211472002U (en) * | 2019-11-23 | 2020-09-11 | 苏州建交建设工程有限公司 | Highway soft soil layer stake composite foundation |
| CN111663518A (en) * | 2020-07-01 | 2020-09-15 | 上海建工一建集团有限公司 | Complex geological foundation reinforcement treatment method and structure |
-
2020
- 2020-09-16 CN CN202010970434.XA patent/CN112030933B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625460A (en) * | 2016-03-11 | 2016-06-01 | 广州市建筑科学研究院有限公司 | Damping device used for connecting pile foundation and bearing platform and construction method of damping device |
| CN206635787U (en) * | 2017-01-22 | 2017-11-14 | 北京东地岩土工程有限公司 | A kind of composite foundation mattress layer |
| KR20190069991A (en) * | 2017-12-12 | 2019-06-20 | 김경호 | Seismic isolation rubber pad for micro-pile and construction method of micro-pile using the same |
| CN208056084U (en) * | 2018-03-09 | 2018-11-06 | 李博 | A kind of architecture foundation pile with shock absorbing effect |
| CN211340829U (en) * | 2019-09-19 | 2020-08-25 | 蒋小娟 | Building pile foundation location is sheared and is born and inlay solid structure |
| CN211472002U (en) * | 2019-11-23 | 2020-09-11 | 苏州建交建设工程有限公司 | Highway soft soil layer stake composite foundation |
| CN111663518A (en) * | 2020-07-01 | 2020-09-15 | 上海建工一建集团有限公司 | Complex geological foundation reinforcement treatment method and structure |
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| CN112030933A (en) | 2020-12-04 |
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