CN203066056U - Post-grouting gravel pile with sand wall wing plates, and special immersed pipe for post-grouting gravel pile - Google Patents

Post-grouting gravel pile with sand wall wing plates, and special immersed pipe for post-grouting gravel pile Download PDF

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Publication number
CN203066056U
CN203066056U CN 201320053065 CN201320053065U CN203066056U CN 203066056 U CN203066056 U CN 203066056U CN 201320053065 CN201320053065 CN 201320053065 CN 201320053065 U CN201320053065 U CN 201320053065U CN 203066056 U CN203066056 U CN 203066056U
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China
Prior art keywords
pile
broken stone
grouting
sand wall
stone pile
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CN 201320053065
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Inventor
黄胜芬
黄建光
程千文
杨洁
林祖客
朱雷
麻建勇
沈金樑
林田夫
王纯
朱永光
李博
金金柱
谢忠巢
席青善
吴温昊
付连发
潘飞朋
赵成艳
林静顺
李凯
潘飞敏
潘永策
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ZHAJIANG XINYU CONSTRUCTION CO Ltd
FANGTAI CONSTRUCTION GROUP Co Ltd
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ZHAJIANG XINYU CONSTRUCTION CO Ltd
FANGTAI CONSTRUCTION GROUP Co Ltd
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Priority to CN 201320053065 priority Critical patent/CN203066056U/en
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Abstract

The utility model relates to a post-grouting gravel pile with sand wall wing plates, which is characterized in that the post-grouting gravel pile mainly comprises a grouting gravel pile, the sand wall wing plates, and a precast reinforced concrete pile tip, wherein the sand wall wing plates are circumferentially and uniformly distributed along the grouting gravel pile, and are connected with the grouting gravel pile into a whole; the top of a pile body stretches into a sand cushion layer; the precast reinforced concrete pile tip comprises gravel pile tips and sand wall pile tips; the gravel pile tips and the sand wall pile tips are arranged at the bottoms of the grouting gravel pile and sand walls respectively; a grouting pipe is prearranged in the middle of the pile body of the grouting gravel pile; and the bottom of the grouting pipe is connected with the precast reinforced concrete pile tip. According to the post-grouting gravel pile, the drainage performance of a discrete material in a prepressing period can be exerted; a rigid composite pile type can be formed by grouting the pile body through the grouting pipe according to a settlement situation; the effective reinforcement depth of a foundation of the post-grouting gravel pile is increased; and a drainage consolidation method and a composite foundation method are unified effectively.

Description

A kind of grouting behind shaft or drift lining broken stone pile and special-purpose immersed tube thereof with sand wall wing plate
Technical field
The utility model relates to a kind of grouting behind shaft or drift lining broken stone pile with sand wall wing plate and special-purpose immersed tube thereof.Belong to the foundation engineering field, the ground that is suitable for engineerings such as soft clay area highway, municipal administration, airport and dykes and dams is handled.
Background technology
China's soft foundation is of a great variety, widely distributed, generally has the moisture content height, characteristics such as compressibilty is big, intensity is low, bad hydraulic permeability.Engineering problems such as total settlement is excessive, relative settlement obvious, the posterior settlement amount exceeds standard, supporting capacity deficiency often appear in the building that is built on the soft foundation, influence normal functional performance and the security performance of building.To this, for improving the supporting capacity of soft foundation, emerged a large amount of soft foundation processing technologies both at home and abroad, wherein consolidation and composite foundation reinforcing method are used comparatively general.
Consolidation is that elder generation arranges vertical drainage bodies such as sand drain in ground, applies prefabricating load then, makes the pore water in the soil body pass through to discharge to drainage system in length and breadth, and the soil body is fixed gradually, and foundation strength progressively improves.Consolidation is made up of drainage system and two major parts of compression system.According to pressurization and two systems of draining different, derive multiple foundation reinforcement method, as preloading, vacuum method, combined vacuum and surcharge preloading method, electroosmotic drainage etc.Because consolidation has characteristics such as cost is low, construction technology maturation, be used widely in China, but it is limited that consolidation has is long in time limit, the ground total settlement big, foundation capability promotes amplitude, and if not enough its settlement after construction of precompressed phase often surpasses setting, these have limited the scope of application of this method to a certain extent.
A kind of more satisfactory Soft Ground mode of composite foundation reinforcing method, originate from the sixties in 20th century, because this method can significantly be improved the bearing capacity of ground, reduce foundation settlement, and effectively suppress the foundation soil body lateral deformation, worldwide all be used widely.Broken stone pile is a kind of in the treatment process of composite foundation, and it is mode pore-forming in soft foundation such as to dash with vibration, impact or water, rubble is pressed in the hole again, forms by the closely knit pile body of gravelly major diameter.Broken stone pile starts from 1835 the earliest, and late 1950s, vibroflotation method begins for the reinforcing cohesive soil ground, and becomes broken stone pile.Up to now, novel broken stone pile mainly contains following several: hammering broken stone pile, the dried broken stone pile of shaking, the crowded broken stone pile of shaking, CFG, ram broken stone pile by force.Broken stone pile has advantages such as easy construction, cheap, reinforcing cycle be short, become one of soft clay area civil engineering construction composite foundation reinforcing method commonly used, but because material of body of a pile is flexible discrete material, intensity is lower, the common not enough 20m of effective reinforcement depth.
Consider that all there are certain limitation in actual applications in consolidation and compound foundation method, for improving the foundation reinforcement method system, engineering circle has begun notice is turned to consolidation and compound foundation method Combination application aspect.At present, more common combined method is to set vertical drainage body in inter-pile soils such as cement mixing pile, pile for prestressed pipe.Though such design can obtain relative good engineering effect under suitable engineering background and geological conditions, but such reinforcement means relates to composite foundation, sand wick or two kinds of dissimilar method for processing foundation of plastic draining board, the construction organization difficulty is big, and construction costs is higher; Vertical drainage body arranges between the stake of composite foundation simultaneously, and its spacing is bigger, does not satisfy the design principles of vertical drainage passage " thin and close ", and its stabilization by drainage effect is comparatively limited.
Have the method that in ground, sets three-dimensional water discharging body at present, this method arranges the lateral drainage pipeline at the vertical drainage pipe, the drainage path of foundation soil is shortened greatly, drainage direction becomes three-dimensional from traditional unicity, can realize simultaneously the purpose that the foundation soil consolidation draining is even, bearing capacity of foundation soil evenly improves, but this method only has the purpose of accelerating soil solidifying.
In sum, solidification problem and material of body of a pile that existing composite foundation reinforcing method is difficult to effectively to solve the inter-pile soil body repeatedly utilize problem, can accelerate the fixed of inter-pile soil body to a certain extent though in the inter-pile soil body, set vertical drainage body, because its drainage direction is single, drainage path is relatively long, existence is smeared or the well inhibition effect.Given this, need a kind of novel pile body that can take into account the length of consolidation and compound foundation method of exploitation at present badly, make it the drain function of existing three-dimensional water discharging body, the humidification of composite foundation is arranged again, also can realize effectively improving the pile body stress performance, put forward the purpose of material use efficient.
Summary of the invention
The purpose of this utility model is to provide a kind of grouting behind shaft or drift lining broken stone pile of band sand wall wing plate of the length that can take into account consolidation and compound foundation method, discrete material elder generation in the pile body is as the three-dimensional water discharging body of precompressed phase, the back forms the rigidity pile body with the cement paste bonding, both can realize accelerating soft foundation discharging consolidation, improve the purpose of the intensity of pile body, also can be implemented under the prerequisite than low cost and according to settlement request sedimentation and deformation dynamically be controlled.
In order to realize above-mentioned technical purpose, the utility model has adopted following technical scheme:
A kind of grouting behind shaft or drift lining broken stone pile with sand wall wing plate is characterized in that, mainly by the slip casting broken stone pile, organize sand wall wing plate, precast reinforced concrete pile point more and form; Sand wall wing plate evenly distributes and is connected in aggregatesly with it along slip casting broken stone pile hoop, and sand cushion inside is stretched at the pile body top; The precast reinforced concrete pile point comprises broken stone pile stake point and sand wall wing plate stake point, is located at the bottom of broken stone pile and sand wall respectively; Be provided with Grouting Pipe in the middle of the slip casting broken stone pile pile body, the Grouting Pipe bottom is connected with precast pile tip.
Discrete material before the utility model slip casting in the pile body can be used as the discharging consolidation that three-dimensional water discharging body accelerates soft foundation, the grouting behind shaft or drift lining broken stone pile that can form band sand wall wing plate after the slip casting can improve the intensity of pile body, and reinforcement ability and scope that sand wall wing plate can strengthen pile body are set.Sand wall wing plate size can require to determine according to reinforcing scope.
For the lateral deformation that limits broken stone pile, the globality that strengthens pile body, the described slip casting broken stone pile slip casting broken stone pile outside is wrapped with geo-grid or steel hoop net; The bottom of geo-grid or steel hoop net is connected with the precast reinforced concrete pile point.
Further, broken stone pile stake in described precast reinforced concrete pile point point and sand wall wing plate stake point are integrated poured, and establish for the broken stone pile stake point tenon that connects immersed tube and the sharp tenon of sand wall stake at its top, and the fixing Grouting Pipe fixing hole of Grouting Pipe.
Described Grouting Pipe is steel pipe, the even tube wall perforate.
The utility model also provides a kind of immersed tube that is exclusively used in above-mentioned broken stone pile, it is characterized in that, described immersed tube is the steel immersed tube, be formed by connecting by circular broken stone pile immersed tube and rectangle sand wall immersed tube, sand wall immersed tube along broken stone pile immersed tube outer ring to being spacedly distributed.
Circular broken stone pile immersed tube is longitudinally established the spacing reinforced steel bar ring of Grouting Pipe, and its diameter is slightly less than circular broken stone pile immersed tube.
The broken stone pile of band sand wall wing plate re-lays sand cushion after setting and finishing, and forms in length and breadth to drainage channel in ground.After the precompressed phase finishes, in pile body, be pressed into the grouting behind shaft or drift lining broken stone pile that cement paste forms band sand wall wing plate by the Grouting Pipe of reserving.Grouting behind shaft or drift lining can selectively carry out in different time, different highway section according to sedimentation and requirement for bearing capacity.
The job practices of the grouting behind shaft or drift lining broken stone pile of band sand wall wing plate of the present utility model comprises following construction sequence:
Step 1, preparation of construction: after construction plant cleaning is finished, earlier geo-grid or steel hoop net are wrapped up in and adorned cylindrically, and place in the inside cylindrical cavity of circular broken stone pile immersed tube; Then Grouting Pipe is passed the spacing reinforced steel bar ring of Grouting Pipe, put into the inside cylindrical cavity of circular broken stone pile immersed tube with the spacing reinforced steel bar ring of Grouting Pipe, and be connected with precast concrete pile point fixing hole;
Step 2, immersed tube set: immersed tube bottom is connected with concrete precast pile pinnacle face and fixing, subsequently with immersed tube together with the stake point, vertically, evenly beat and extremely design an end absolute altitude;
Step 3, the pile body filling of gathering materials: according to each loop control degree of depth, in circular broken stone pile immersed tube and rectangle sand wall immersed tube, fill rubble and medium coarse sand respectively with batch meter;
Step 4, pile body moulding: according to pulling out immersed tube in the vibration of each circulation pile height, and carry out vibratory compaction, form the broken stone pile of band sand wall wing plate;
Step 5, piling prepressing: lay sand cushion on the stake top, and fill precompressed according to designing requirement, make the foundation soil discharging consolidation;
Step 6, pile body grouting behind shaft or drift lining: after treating that precompressed finishes, the pile body Grouting Pipe is connected with the roadbed slip casting person in charge, is responsible for to the broken stone pile slip casting of band sand wall wing plate by slip casting, and seals drainage channel, form the broken stone pile of grouting behind shaft or drift lining band sand wall wing plate.
In above-mentioned job practices, grouting behind shaft or drift lining can selectively carry out in different time, different highway section according to sedimentation and requirement for bearing capacity.
The utlity model has following characteristics:
(1) length of collection consolidation and compound foundation method, sand wall wing plate and broken stone pile can be earlier as the vertical drainage passages of precompressed phase, and the back forms the rigidity pile body with the cement paste bonding.
(2) the precompressed phase, sand wall wing plate and broken stone pile can be used as the drainage channel in the soft foundation, have realized three-dimensional draining, have both shortened drainage path, can realize that again foundation soil is evenly fixed.
(3) by adjusting slip casting time, slip casting position, grouting pressure, can realize the dynamic control to foundation settlement.
(4) construction technology is simple, need not to carry out respectively the construction of consolidation and compound foundation method, has reduced difficulty and the construction costs of construction organization.
In a word, characteristics of the present utility model are to collect the length of discharging consolidation and compound foundation method, have improved the use value of material of body of a pile, have strengthened the supporting capacity of ground, have enlarged the reinforcing scope of ground.
Description of drawings
Fig. 1 is the grouting behind shaft or drift lining broken stone pile stereogram of the utility model band sand wall wing plate;
Fig. 2 is the grouting behind shaft or drift lining broken stone pile longitudinal sectional drawing of the utility model band sand wall wing plate;
Fig. 3 is that Fig. 2 is along the grouting behind shaft or drift lining broken stone pile cross-sectional drawing of the band sand wall wing plate of A-A line;
Fig. 4 is that Fig. 2 is along the precast pile tip cross-sectional top view of B-B line;
Fig. 5 is Fig. 2 precast pile tip enlarged drawing;
Fig. 6 is immersed tube cross section sectional view;
Fig. 7 is the batch meter vertical view;
Fig. 8 is that Fig. 7 is along the batch meter sectional drawing of C-C line;
Fig. 9 is the spacing reinforced steel bar ring schematic diagram of Grouting Pipe;
Figure 10 is the main construction process figure of the special-shaped sand wall stake of grouting behind shaft or drift lining rubble.
Among the figure: 1-broken stone pile, 2-sand wall wing plate, 3-Grouting Pipe, 4-geo-grid, 5-precast reinforced concrete pile point, 6-sand wall stake point, 7-sand wall stake point tenon, 8-broken stone pile stake point, 9-broken stone pile stake point tenon, 10-Grouting Pipe fixing hole, 11-special-shaped steel immersed tube, 12-batch meter, 13-funnel outer wall, 14-rubble material inlet, 15-funnel inwall, 16-baffle plate, 17-sand material material inlet, the broken stone pile of the band sand wall wing plate of 18-not slip castings, the broken stone pile of the band sand wall wing plate of 19-grouting behind shaft or drift lining, 20-Grouting Pipe spacing hole, the spacing reinforced steel bar ring of 21-Grouting Pipe.
Specific embodiment
The solder technology of immersed tube requires, immersed tube sets and lift technique requires, be not repeated in sand cushion and the present embodiment such as top filler design parameters and construction requirement, specifically sets forth the embodiment that the utility model relates to structure.
Fig. 1 is the grouting behind shaft or drift lining broken stone pile stereogram of the utility model band sand wall wing plate, Fig. 2 is the grouting behind shaft or drift lining broken stone pile longitudinal sectional drawing of the utility model band sand wall wing plate, Fig. 3 is that Fig. 2 is along the grouting behind shaft or drift lining broken stone pile cross-sectional drawing of the band sand wall wing plate of A-A line, Fig. 4 be Fig. 2 along the precast pile tip cross-sectional top view of B-B line, Fig. 5 is Fig. 2 precast pile tip enlarged drawing.Shown in Fig. 1 ~ 5, the grouting behind shaft or drift lining broken stone pile of band sand wall wing plate mainly comprises broken stone pile 1, organizes sand wall wing plate 2, Grouting Pipe 3, geo-grid 4, precast reinforced concrete pile point 5 more.
Precast reinforced concrete pile point 5 profiles are consistent with special-shaped steel immersed tube 11 profiles, and wherein the diameter of circular broken stone pile stake point 8 is 550mm, broken stone pile stake point tenon 9 external diameter 500mm, and height is 100mm; The tip of sand wall stake point 6 is equilateral triangle, and the length of side is 55mm, at stake pinnacle face the sand wall stake point tenon 7 that height and width are 30mm is set; The sharp cement of stake adopts 42.5 #Portland cement, strength grade of concrete are C30, and bar diameter is 8mm, and strength grade is Q235; Broken stone pile stake point 8 is provided with Grouting Pipe fixing hole 10; Sand wall stake point 6 should be built in aggregates with broken stone pile stake point 8.
The immersed tube of broken stone pile 1 and many group sand wall wing plates 2 adopts special-shaped steel immersed tube 11, and this abnormal shape steel immersed tube 11 is welded to connect by the circular broken stone pile immersed tube in centre and four rectangle sand wall immersed tube, and rectangle sand wall immersed tube is spacedly distributed around circular broken stone pile immersed tube hoop.
Fig. 6 is immersed tube cross section sectional view, as shown in Figure 6, the hot rolled seamless steel tube that the circular broken stone pile immersed tube in the special-shaped steel immersed tube 11 adopts, wall thickness is 12mm, internal diameter is 500mm; Rectangle sand wall immersed tube adopts hot rolled steel plate, the wide 500mm of inwall; The strength grade of steel plate is Q235, and thickness of slab is 12mm, and dimensions should satisfy the requirement of current specifications.
Circular broken stone pile immersed tube and rectangle sand wall immersed tube should be welded to connect; The strength grade of steel plate is Q235, and dimensions should satisfy the requirement of current specifications.
Grouting Pipe 3 is located at the circular immersed tube center of different in nature steel immersed tube 11, and its nominal diameter is the common steel tube Grouting Pipe of 50mm, evenly offers colored hole on the tube wall, and thickness of steel pipe 3.8mm, strength grade are Q235, and dimensions should satisfy the requirement of current specifications.
Geo-grid 4 adopts steel to mould grid, vertical, horizontal tensile strength 〉=50kN/m, vertical, horizontal elongation per unit length≤3%.
Broken stone pile 1 and sand wall wing plate 2 adopt batch meter 12 to carry out feed.
Fig. 7 is the batch meter vertical view, Fig. 8 be Fig. 7 along the batch meter sectional drawing of C-C line, shown in Fig. 7 ~ 8, batch meter 12 comprises funnel outer wall 13, funnel inwall 15 and under shield 16, forms rubble material inlet 14 and sand material material inlet 17; Batch meter 12 outward appearances are truncated cone-shaped, and the outer wall maximum gauge is 2500mm, and diameter of bore is 500mm; Batch meter 12 adopts steel material to be welded,
For the locus of restriction Grouting Pipe 3, vertically establish the spacing reinforced steel bar ring 21 of Grouting Pipe along Grouting Pipe.Fig. 9 is the spacing reinforced steel bar ring schematic diagram of Grouting Pipe, and as shown in Figure 9, Grouting Pipe 3 is passed Grouting Pipe spacing hole 20, and the diameter of the spacing reinforced steel bar ring 21 of Grouting Pipe is 400mm.
Special-shaped steel immersed tube 11 sets to projected depth, fills rubble and sand respectively simultaneously in circular broken stone pile immersed tube and rectangle sand wall immersed tube by each loop control degree of depth, forms broken stone pile 1 and sand wall 2 behind cycling cycling vibration; Broken stone pile 1, external diameter are 500mm, and rubble adopts the unweathered rubble mud content of rolling less than 5%, and maximum particle diameter is not more than 40mm; Sand wall wing plate 2 is thick to be 50mm, and wide is 500mm, and heap sand adopts the medium sand of prototype gradation, and mud content is less than 3%.
Figure 10 is the main construction process figure of the special-shaped sand wall stake of grouting behind shaft or drift lining rubble, and as shown in figure 10, the main construction course of the special-shaped sand wall of grouting behind shaft or drift lining rubble stake is as follows:
Step 1, preparation of construction: after construction plant cleaning is finished, earlier geo-grid 4 is wrapped up in and adorned cylindrically, and place in the inside cylindrical cavity of circular broken stone pile immersed tube; Then Grouting Pipe 3 is passed the Grouting Pipe spacing hole 20 of the spacing reinforced steel bar ring 21 of Grouting Pipe, and put into the inside cylindrical cavity of special-shaped steel immersed tube 11 circular broken stone pile immersed tube with the spacing reinforced steel bar ring 21 of Grouting Pipe, and be connected with stake point Grouting Pipe fixing hole 10;
Step 2, immersed tube set: special-shaped steel immersed tube 11 bottoms and concrete precast pile point 5 end faces are connected and fixing, subsequently with special-shaped steel immersed tube 11 together with the stake point, vertically, evenly beat to designing an end absolute altitude;
Step 3, the pile body filling of gathering materials: according to each loop control degree of depth, fill rubble and medium coarse sand in the circular broken stone pile immersed tube in the special-shaped steel immersed tube 11 and the rectangle sand wall immersed tube respectively with batch meter 12;
Step 4, pile body moulding: according to pulling out special-shaped steel immersed tube 11 in the vibration of each circulation pile height, and carry out vibratory compaction, form the broken stone pile 18 of the band sand wall wing plate of not slip casting;
Step 5, piling prepressing: lay sand cushion on the stake top, and fill precompressed according to designing requirement, make the foundation soil discharging consolidation;
Step 6, pile body grouting behind shaft or drift lining: after treating that precompressed finishes, pile body Grouting Pipe 3 is connected with the roadbed slip casting person in charge, be responsible for to broken stone pile 18 slip castings of the band sand wall wing plate of not slip casting by slip casting, and the sealing drainage channel, the broken stone pile 19 of the band sand wall wing plate of formation grouting behind shaft or drift lining.

Claims (6)

1. the grouting behind shaft or drift lining broken stone pile with sand wall wing plate is characterized in that, mainly by the slip casting broken stone pile, organize sand wall wing plate, precast reinforced concrete pile point more and form; Sand wall wing plate evenly distributes and is connected in aggregatesly with it along slip casting broken stone pile hoop, and sand cushion inside is stretched at the pile body top; The precast reinforced concrete pile point comprises broken stone pile stake point and sand wall wing plate stake point, is located at the bottom of broken stone pile and sand wall respectively; Be provided with Grouting Pipe in the middle of the slip casting broken stone pile pile body, the Grouting Pipe bottom is connected with precast pile tip.
2. the grouting behind shaft or drift lining broken stone pile of band sand wall wing plate according to claim 1 is characterized in that, the described slip casting broken stone pile outside is wrapped with geo-grid or steel hoop net; The bottom of geo-grid or steel hoop net is connected with the precast reinforced concrete pile point.
3. the grouting behind shaft or drift lining broken stone pile of band sand wall wing plate according to claim 1, it is characterized in that, broken stone pile stake point and sand wall wing plate stake point in the described precast reinforced concrete pile point are integrated poured, establish for the broken stone pile stake point tenon that connects immersed tube and sand wall stake point tenon at its top, and be used for the fixedly Grouting Pipe fixing hole of Grouting Pipe.
4. the grouting behind shaft or drift lining broken stone pile of band sand wall wing plate according to claim 1 is characterized in that, described Grouting Pipe is steel pipe, the even tube wall perforate.
5. an immersed tube that is exclusively used in the described broken stone pile of one of claim 1 ~ 3 is characterized in that, described immersed tube is the steel immersed tube, be formed by connecting by circular broken stone pile immersed tube and rectangle sand wall immersed tube, sand wall immersed tube along broken stone pile immersed tube outer ring to being spacedly distributed.
6. immersed tube according to claim 5 is characterized in that, described circular broken stone pile immersed tube longitudinally is provided with the spacing reinforced steel bar ring of Grouting Pipe.
CN 201320053065 2013-01-29 2013-01-29 Post-grouting gravel pile with sand wall wing plates, and special immersed pipe for post-grouting gravel pile Expired - Fee Related CN203066056U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061328A (en) * 2013-01-29 2013-04-24 方泰建设集团有限公司 Post-grouting gravel pile with sand wall wing plates and construction method
CN104120730A (en) * 2014-07-17 2014-10-29 蓝振宁 Pile foundation with wing
CN108533273A (en) * 2018-04-11 2018-09-14 北京市政建设集团有限责任公司 A kind of novel pipe shed for Support System in Soft Rock Tunnels leading pre-supporting
CN110306525A (en) * 2019-08-08 2019-10-08 中国港湾工程有限责任公司 Treatment method of collapsible loess foundation
CN110952530A (en) * 2019-12-17 2020-04-03 中交路桥建设有限公司 Gravel pile for soft soil foundation
CN111945703A (en) * 2020-08-19 2020-11-17 福建省燕城建设工程有限公司 Drainage structure for foundation stabilization and drainage method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061328A (en) * 2013-01-29 2013-04-24 方泰建设集团有限公司 Post-grouting gravel pile with sand wall wing plates and construction method
CN104120730A (en) * 2014-07-17 2014-10-29 蓝振宁 Pile foundation with wing
CN108533273A (en) * 2018-04-11 2018-09-14 北京市政建设集团有限责任公司 A kind of novel pipe shed for Support System in Soft Rock Tunnels leading pre-supporting
CN110306525A (en) * 2019-08-08 2019-10-08 中国港湾工程有限责任公司 Treatment method of collapsible loess foundation
CN110952530A (en) * 2019-12-17 2020-04-03 中交路桥建设有限公司 Gravel pile for soft soil foundation
CN111945703A (en) * 2020-08-19 2020-11-17 福建省燕城建设工程有限公司 Drainage structure for foundation stabilization and drainage method thereof

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Granted publication date: 20130717

Termination date: 20210129