CN202530471U - Composite pile foundation for circular coal yard with soft soil foundation - Google Patents
Composite pile foundation for circular coal yard with soft soil foundation Download PDFInfo
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- CN202530471U CN202530471U CN2012201659192U CN201220165919U CN202530471U CN 202530471 U CN202530471 U CN 202530471U CN 2012201659192 U CN2012201659192 U CN 2012201659192U CN 201220165919 U CN201220165919 U CN 201220165919U CN 202530471 U CN202530471 U CN 202530471U
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Abstract
The utility model discloses a composite pile foundation for a circular coal yard with a soft soil foundation. The composite pile foundation comprises a foundation pile, the top of the foundation pile is provided with a supporting plate, a cushion layer is laid on the supporting plate, and a biaxial geogrid is arranged in the cushion layer. The joint working effect of pile soil is made full use of to bear coal stacking load, the construction cost of foundation engineering is greatly reduced, soil excavation and backfill quantity are correspondingly decreased, the construction period can be shortened, the engineering cost is reduced, and remarkable economic and social benefits are achieved.
Description
Technical field
The utility model relates to large-scale circular coal yard technical field, particularly a kind of composite pile foundation that is used for the circular coal yard of soft foundation.
Background technology
Circular coal yard: circular coal yard is that annular concrete coal-stopping wall and top steel work space net rack dome are formed, and is used for piling up the storage raw coal.Set inside is around rotating cantilever stacker of central post and pitching scraper reclaimer.Raw coal is by the stacker-reclaimer top fed,, get by the scraper reclaimer rotation and to expect coal yard center ground reception bunker to the coal yard coal piling through the rotation stacker, and through the feeder under the coal bunker and coal conveyer belts from bottom discharge.The coal yard system is storing and is getting in the material process, and no dust escapes good environmental protection, generally adopts the program centralized Control, and automaticity is high.Large-scale circular sealing coal yard typically has a diameter from 30～120m
Composite pile foundation: composite pile foundation is the basis of a kind of stake and the common bearing load of inter-pile soil body, and upper load is at first passed to stake by cushion cap, when the stake bearing capacity that reaches capacity; When certain thorn people's sedimentation takes place; Load just begins to shift to inter-pile soil gradually, can the bearing capacity of stake be used the limit, utilizes its bigger sedimentation to make inter-pile soil bear the load of a part then; Thereby reduce the usage quantity of engineering piles, reach the purpose of saving cost.
Large-scale circular sealing coal yard foundation adopts raft type base plate pile foundation on the existing soft foundation; Because the coal piling load is big; Maximum reaches 300Kpa, and raft type base plate thickness is very big, and amount of reinforcement increases on the one hand; Thereby strengthened the corresponding increase pile foundation of the load quantity that the bottom pile foundation is born on the one hand again, the ground foundation engineering expenditure of construction is very high.Because foundation area is bigger, and buried depth is darker, the excavation and the stemming operation amount of the earthwork are bigger in addition, and corresponding expense is also higher.
The utility model content
The purpose of the utility model is to provide the composite foundation pile of the circular coal yard of a kind of soft foundation, can make full use of the native co-operation effect of stake and bear the coal piling load, significantly reduces the ground foundation engineering expenditure of construction.
For realizing above-mentioned purpose, the composite foundation pile that the circular coal yard of a kind of soft foundation is provided of the utility model comprises foundation pile, and the foundation pile top is provided with supporting plate, lays bed course on the supporting plate, is provided with two-way GSZ in the bed course.
In another preference, lay silt between supporting plate and the bed course.
In another preference, two-way GSZ is processed by bamboo clappers or composited steel and plastic decking.
In another preference, two-way GSZ is three layers, is arranged in top, middle part and the bottom of bed course.
In another preference, the distance between three layers of two-way GSZ is 150-300mm.
In another preference, two-way GSZ end is provided with curved anchor near the coal-stopping wall place.
In another preference, bed course is cinder bed course or hardcore bed.
In another preference, the coal-stopping wall foundation pile is a castinplace pile.
In another preference, castinplace pile adopts the segmentation arrangement of reinforcement.
In another preference, coal piling district foundation pile adopts the PHC stake.
In another preference, the diameter of PHC stake is 300-500mm.
In another preference, composite pile foundation is pressed annular array and is distributed in circular coal yard.
The beneficial effect of the utility model is: large-scale circular seals in the coal yard structural configuration system on the soft foundation that the utility model proposes; The coal yard foundation adopts the PHC composite pile foundation; Make full use of the native co-operation effect of stake and bear the coal piling load; Significantly reduce the ground foundation engineering expenditure of construction, the also corresponding minimizing with the backfill amount of soil excavation simultaneously helps shortening construction duration and reduces construction costs, brings remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is the structural representation of the composite foundation pile of the circular coal yard of the soft foundation of the utility model preferred embodiments.
Fig. 2 is the structural representation of the composite foundation pile of the circular coal yard of the soft foundation of the utility model preferred embodiments near the coal-stopping wall place.
The specific embodiment
For letting above-mentioned purpose, the feature and advantage of the utility model can be more obviously understandable, elaborate below in conjunction with the specific embodiment of accompanying drawing to the utility model.At first need to prove; The utility model is not limited to the following specific embodiment; Those skilled in the art should understand the utility model from the spirit that following embodiment embodied, and each technical term can be done the most wide in range understanding based on the spirit of the utility model.Same or analogous member uses the same reference numerals to represent among the figure.
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated:
Fig. 1, Fig. 2 show the preferred embodiments of the composite foundation pile of the circular coal yard of this soft foundation of the utility model.Fig. 1 is that structural representation, Fig. 2 of this composite foundation pile is the structural representation near the coal-stopping wall place of this composite foundation pile.The composite foundation pile of the circular coal yard of this soft foundation comprises: foundation pile 1, foundation pile 1 top is provided with supporting plate 2, lays bed course 3 on the supporting plate 2, is provided with two-way GSZ 4 in the bed course 3.
The composite foundation pile of the circular coal yard of the soft foundation that the utility model proposes; The coal yard foundation can adopt the PHC composite pile foundation; Make full use of the native co-operation effect of stake and bear the coal piling load; Significantly reduce the ground foundation engineering expenditure of construction, the also corresponding minimizing with the backfill amount of soil excavation simultaneously helps shortening construction duration and reduces construction costs.
Lay silt 5 between supporting plate 2 and the bed course 3.In addition, be appreciated that in some other embodiment of the utility model, can also do not lay silt 5 between supporting plate 2 and the bed course 3 and directly lay rubble.
Two-way GSZ 4 is processed by bamboo clappers or composited steel and plastic decking.Because the large tracts of land preloading in coal piling district, the top layer soil body will produce lateral deformation, be that bed course 3 jointly bear by foundation pile 1 with the inter-pile soil layer with coal piling load; Reduced the ground foundation engineering expenditure of construction widely; Bamboo clappers and composited steel and plastic decking run into the pressure elastically deformable because it has toughness, transfer loads in the stake; Reduce the loading force that the stake top receives, improved the overall performance of ground.
Two-way GSZ 4 is three layers, is arranged in top, middle part and the bottom of bed course 3.The two-way GSZ 4 of this kind is provided with compared to original valve type base plate bed course, and thickness reduces greatly, has reduced construction cost simultaneously.In addition, in some other embodiment of the utility model, this two-way GSZ 4 is double-deck.
Distance between three layers of two-way GSZ 4 is 150-300mm.Preferable, the distance between three layers of two-way GSZ 3 is 200mm.
Referring to Fig. 2, two-way GSZ 4 ends are provided with curved anchor 6 near the coal-stopping wall place.Near the coal-stopping wall place, bed course 3 can produce lateral pressure to coal-stopping wall, reduce the supporting capacity of coal-stopping wall.Through curved anchor 6 is set in two-way GSZ 4 ends near coal-stopping wall, the lateral force of hardcore bed 3 of can loading, thus improved the supporting capacity of coal-stopping wall.
Coal-stopping wall foundation pile 1 is a castinplace pile.Foundation pile adopts castinplace pile, so that consider that the influence of soft foundation lateral deformation extruding pile body is by the stressed segmentation design of reinforcement of carrying out of pile body.
Coal piling district foundation pile 1 adopts the PHC stake.The pile strength of PHC stake is high: the above concrete of C80 is all adopted in the PHC stake, adopts pretensioned prestressing to make, thereby bearing capacity is high, can resist bigger cracking resistance moment of flexure.Have stronger service behaviour, pile body can remain intact under tight bad construction environment, significantly reduces and splits stake, the generation of fracture accident.PHC stake penetration power is strong, under the enough pressure, can pass through thicker chiltern soil layer, guarantees that stake end build-in is in bearing stratum preferably.In addition, because the bearing capacity of single pile of PHC stake is higher relatively, amount of concrete that its ring section is consumed is less, thereby unit bearing capacity cost is economized most.Preferably, selecting the diameter of PHC stake for use is 300-500mm.
Composite pile foundation is pressed annular array and is distributed in circular coal yard.In addition, in some other embodiment of the utility model, the array distribution that composite pile foundation also can be at a certain distance.
At present, it is in the majority to build coal yard in coastal riverine area, and this area is mainly marine facies, delta facies cohesive soil deposit or the river drift that the later stage in the Quaternary Period forms; The characteristics of this type soil are that natural moisture content is high, and natural void ratio is big, and shear strength is low; Compression coefficient is high; Transmission coefficient is little, and thixotropy is remarkable, belongs to typical soft foundation.According to statistics, the domestic round sealed coal yard construction work expense of having moved is about 6000～7,500 ten thousand at present.In the construction work expense, the cost proportion about 40% that soft foundation round sealed coal yard ground foundation engineering is shared.Adopt the composite foundation pile of the circular coal yard of soft foundation of the utility model proposition to arrange, generally can save cost 800～1,200 ten thousand, that is considerable especially to the investment influence if build two or more circular coal yards the same period.
Should be understood that after having read the above-mentioned teachings of the utility model, those skilled in the art can do various changes or modification to the utility model, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. the composite pile foundation of the circular coal yard of soft foundation is characterized in that, comprises foundation pile, and said foundation pile top is provided with supporting plate, lays bed course on the supporting plate, is provided with two-way GSZ in the bed course.
2. composite pile foundation according to claim 1 is characterized in that, lays silt between said supporting plate and the bed course.
3. composite pile foundation according to claim 1 is characterized in that, said two-way GSZ is processed by bamboo clappers or composited steel and plastic decking.
4. composite pile foundation according to claim 1 is characterized in that, said two-way GSZ is three layers, is arranged in top, middle part and the bottom of bed course.
5. composite pile foundation according to claim 4 is characterized in that, the distance between said three layers of two-way GSZ is 150-300mm.
6. composite pile foundation according to claim 1 is characterized in that, said two-way GSZ end is provided with curved anchor near the coal-stopping wall place.
7. composite pile foundation according to claim 1 is characterized in that, said bed course is cinder bed course or hardcore bed.
8. composite pile foundation according to claim 1 is characterized in that, the coal-stopping wall foundation pile is a castinplace pile.
9. composite pile foundation according to claim 1 is characterized in that, coal piling district foundation pile adopts the PHC stake.
10. composite pile foundation according to claim 9 is characterized in that, the diameter of said PHC stake is 300-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201659192U CN202530471U (en) | 2012-04-18 | 2012-04-18 | Composite pile foundation for circular coal yard with soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201659192U CN202530471U (en) | 2012-04-18 | 2012-04-18 | Composite pile foundation for circular coal yard with soft soil foundation |
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| Publication Number | Publication Date |
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| CN202530471U true CN202530471U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201659192U Expired - Lifetime CN202530471U (en) | 2012-04-18 | 2012-04-18 | Composite pile foundation for circular coal yard with soft soil foundation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374922A (en) * | 2012-04-18 | 2013-10-30 | 中国电力工程顾问集团华东电力设计院 | Composite pile foundation of soft-soil-foundation round coal field |
| CN103388342A (en) * | 2013-07-30 | 2013-11-13 | 大连市建筑设计研究院有限公司 | Composite foundation and design method thereof |
-
2012
- 2012-04-18 CN CN2012201659192U patent/CN202530471U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374922A (en) * | 2012-04-18 | 2013-10-30 | 中国电力工程顾问集团华东电力设计院 | Composite pile foundation of soft-soil-foundation round coal field |
| CN103388342A (en) * | 2013-07-30 | 2013-11-13 | 大连市建筑设计研究院有限公司 | Composite foundation and design method thereof |
| CN103388342B (en) * | 2013-07-30 | 2015-05-20 | 大连市建筑设计研究院有限公司 | Composite foundation and design method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
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| CX01 | Expiry of patent term |