CN206233232U - A kind of upper and lower part expansion type soil cement is combined pile tube - Google Patents

A kind of upper and lower part expansion type soil cement is combined pile tube Download PDF

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Publication number
CN206233232U
CN206233232U CN201621323066.5U CN201621323066U CN206233232U CN 206233232 U CN206233232 U CN 206233232U CN 201621323066 U CN201621323066 U CN 201621323066U CN 206233232 U CN206233232 U CN 206233232U
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pile
cement
concrete pipe
epimere
expands
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周同和
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周同和
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Abstract

A kind of upper and lower part expands the compound pile tube of shape soil cement, including prefabricated concrete pipe pile, centre bore is set in the prefabricated concrete pipe pile, the first cement earth pile of filling in centre bore, second cement earth pile is set outside prefabricated concrete pipe pile, second cement earth pile includes upper, middle and lower segment, and the epimere of the second cement earth pile and the stake footpath of hypomere are all higher than the stake footpath in stage casing, and the second cement earth pile stage casing and epimere, hypomere between be respectively provided with the first variable diameters section and the second variable diameters section.With compared with the pile body of the single diameter of the concrete amounts such as height, bearing capacity of pile foundation of the present utility model is higher, can be on the premise of ensureing to meet design bearing capacity requirement, realize that stake is long shorter, the capability development of pile foundation side resistance simultaneously is higher, and the geological conditions of bottom soil layer is substantially better than particularly suitable for upper soil horizon.

Description

A kind of upper and lower part expansion type soil cement is combined pile tube
Technical field
The utility model belongs to foundation engineering technical field, and in particular to a kind of top expansion type soil cement is combined pile tube.
Background technology
With the development of building trade, construction scope increasingly increases, and the additional load of ground is increasing, high for part Layer, high-rise building, subsoil and composite foundation can not meet ground requirement for bearing capacity, it is this under the conditions of, pile foundation is A kind of base form for generally using.It is preferable for some areas pile foundation top and bottom soil layer engineering properties, middle part soil layer When more weak, typically using increasing, stake is long to be penetrated soft layer or increase stake footpath raising collateral resistance to ensure pile foundation carrying pile foundation Power, pile-type typically uses cast-in-situ bored pile or static pressure, driven precast pile etc..Bored pile construction operation is:
(1)Plant equipment and material enter job site;
(2)Measure of pile position setting-out;
(3)Embedded casing;
(4)Rig simultaneously pore-forming in place;
(5)Borehole cleaning, lifts steel reinforcement cage;
(6)Conduit, concrete perfusion are installed;
(7)Casing is removed, pile crown is cut;
(8)Pile body is detected.
Although above-mentioned technique has been commonly used, using still suffering from problems with thicker soft layer:
1)In upper soil horizon preferably, bottom soil layer.Needed during pile foundation size design deduct negative friction influence, stake footpath, Stake corresponding increase long, causes a large amount of wastes;
2)Filling pile construction has higher requirements to filling concrete process, and filling process should ensure that continuously, otherwise easily occurs Pile breaking phenomenon.
Utility model content
The purpose of this utility model is to provide a kind of upper and lower part expansion type soil cement compound pile tube.
Based on above-mentioned purpose, the utility model is adopted the following technical scheme that:
A kind of upper and lower part expands the compound pile tube of shape soil cement, including prefabricated concrete pipe pile, the prefabricated concrete pipe pile Interior setting centre bore, the first cement earth pile of filling in centre bore sets the second cement earth pile outside prefabricated concrete pipe pile, and described the Two cement earth piles include upper, middle and lower segment, and the epimere of the second cement earth pile and the stake footpath of hypomere are all higher than the stake footpath in stage casing, and The first variable diameters section and the second variable diameters section are respectively provided between the stage casing of the second cement earth pile and epimere, hypomere.
The prefabricated concrete pipe pile includes epimere and hypomere, and the stake footpath of prefabricated concrete pipe pile epimere is more than concrete Native pile tube hypomere, sets the 3rd variable diameters section, the height of prefabricated concrete pipe pile epimere between upper and lower section of prefabricated concrete pipe pile Degree is highly equal with the second cement earth pile epimere, and the height of the 3rd variable diameters section is highly equal with the first variable diameters section, in advance The bottom of concrete tubular pile processed maintains an equal level with the bottom of the second cement earth pile.
The side wall of the prefabricated concrete pipe pile is uniformly distributed muscle body, and the periphery of muscle body sets stirrup.
The trend of the muscle body is consistent with the trend of prefabricated concrete pipe pile side wall.
First cement earth pile and the second cement earth pile are cement mixing method or soil cement bored concrete pile.
The epimere of second cement earth pile and the stake footpath of hypomere are equal.
First variable diameters section, the second variable diameters section and the 3rd variable diameters section are with the angle of the axis of prefabricated concrete pipe pile not More than 12 °.
External diameter at least 20mm of the stake footpath of second cement earth pile more than prefabricated concrete pipe pile.
The second cement earth pile epimere is located at compared with hard stratum, and stage casing is located at and is located at compared with hard stratum compared with Soft Soil Layer, hypomere.
It is described be compared with hard stratum in close-dense state layer of sand, the cohesive soil of hard plastic-hardened condition, the powder of dense state One or more mixing in soil;Described is cohesive soil that shape is moulded in soft modeling-stream compared with Soft Soil Layer.
Compared with prior art, technique effect of the present utility model is:
1)With compared with the pile body of the single diameter of the concrete amounts such as height, bearing capacity of pile foundation of the present utility model is more Height, can realize that stake is long shorter on the premise of ensureing to meet design bearing capacity requirement, while the capability development of pile foundation side resistance is more Height, the geological conditions of bottom soil layer is substantially better than particularly suitable for upper soil horizon;
2)The overall presentation top of stake and the structure type that bottom stake footpath is big, middle part stake footpath is small, can make upper and lower part soil layer Collateral resistance be effectively played;
3)Pile body uses variable diameters segment structure form, makes to form taper nature transition between composite foundation pile top and bottom, Be conducive to upper load to transmit downwards, increase the performance of bottom pile bearing capacity, while also saving perfusion pile material;
4)Easy construction, material-saving, the prestressed-concrete pile for using are prefabricated components, can shorten live man-hour, its Intensity is higher compared with cast-in-situ concrete poured stake, and interior equipped with prestressed steel bar, it is not easy to which cracking destruction phenomenon occurs;It is prefabricated Without taking out after stake insertion, easy construction and effect is good;More concrete and reinforcing bar are saved under identical anti-bending bearing capacity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is prefabricated concrete pipe pile structural representation in the utility model;
Fig. 3 is prefabricated concrete pipe pile cross-sectional view in the utility model;
Fig. 4 is construction procedure in embodiment(2)Structural representation;
Fig. 5 is construction procedure in embodiment(3)Structural representation;
Fig. 6 is construction procedure in embodiment(4)Structural representation.
Specific embodiment
A kind of upper and lower part as illustrated in figs. 1 and 2 expands the compound pile tube of shape soil cement, including prefabricated concrete pipe pile 1, The first cement earth pile 2 of filling, prefabricated concrete pipe pile 1 in centre bore 11, centre bore 11 are set in the prefabricated concrete pipe pile The second cement earth pile 3 of outer setting, the first cement earth pile 2 and the second cement earth pile 3 are soil cement bored concrete pile.The precast concrete Pile tube 1, the first cement earth pile 2 and the second cement earth pile 3 are coaxially disposed.The stake footpath of second cement earth pile 3 is mixed more than prefabricated The external diameter at least 20mm of solidifying soil pile tube 1.Second cement earth pile 3 includes upper, middle and lower segment, on second cement earth pile Section 31 is located at the cohesive soil 4 (compared with hard stratum) of hard plastic-hardened condition, and the cohesive soil 5 that stage casing 32 is located at soft modeling-stream modeling shape is (softer Soil layer), hypomere 33 it is close in being located at-layer of sand 6 (compared with hard stratum) of dense state.The epimere 31 of second cement earth pile 3 is with The stake footpath of section 33 is equal, and more than the stake footpath in stage casing 32, the stake footpath of epimere 31 and hypomere 33 is 820mm, and the stake footpath in stage casing 32 is 620mm, is respectively provided with the first variable diameters section 34 and second and becomes between the stage casing 32 of the second cement earth pile 3 and epimere 31, hypomere 33 Diameter segment 35.
The prefabricated concrete pipe pile 1 includes epimere 12 and hypomere 13, and the stake footpath of the epimere 12 of prefabricated concrete pipe pile 1 is more than Prefabricated concrete pipe pile hypomere 13, the diameter 800mm of 1 epimere of prefabricated concrete pipe pile 12, the diameter 600mm of hypomere 13, internal diameter 400mm, sets the 3rd variable diameters section 14 between upper and lower section of prefabricated concrete pipe pile 1, the epimere 12 of prefabricated concrete pipe pile 1 Height is highly equal with the epimere of the second cement earth pile 3, the height of height and the first variable diameters section 34 of the 3rd variable diameters section 14 Equal, the bottom of prefabricated concrete pipe pile 1 maintains an equal level with the bottom of the second cement earth pile 3.The side wall of the prefabricated concrete pipe pile 1 Muscle body 15 is uniformly distributed, the trend of muscle body 15 is consistent with the trend of the side wall of prefabricated concrete pipe pile 1, the periphery of muscle body 15 sets hoop Muscle 16.The muscle body 15 is the hybrid reinforcement of prestressed steel bar or prestressed steel bar and nonprestressed reinforcement.
The axis of the first variable diameters the 34, second variable diameters of section section 35 and the 3rd variable diameters section 14 and prefabricated concrete pipe pile 1 Angle be not more than 12 °.
Its construction method, comprises the following steps:
(1)Measure of pile position setting-out;
(2)Rig creeps into the hole of drawing to form top and the bottom expanding reach, as shown in Figure 4;
(3)Premixing soil cement is irrigated in hole, as shown in Figure 5;
(4)During prefabricated concrete pipe pile 1 inserted into cement earth pile;As shown in Figure 6.

Claims (10)

1. a kind of upper and lower part expands the compound pile tube of shape soil cement, it is characterised in that described prefabricated including prefabricated concrete pipe pile The first cement earth pile of filling in centre bore, centre bore is set in concrete tubular pile, the second cement is set outside prefabricated concrete pipe pile Native stake, during second cement earth pile includes that upper, middle and lower segment, the epimere of the second cement earth pile and the stake footpath of hypomere are all higher than Section stake footpath, and the second cement earth pile stage casing and epimere, hypomere between be respectively provided with the first variable diameters section and the second variable diameters Section.
2. upper and lower part as claimed in claim 1 expands the compound pile tube of shape soil cement, it is characterised in that the precast concrete Pile tube includes epimere and hypomere, and the stake footpath of prefabricated concrete pipe pile epimere is more than prefabricated concrete pipe pile hypomere, precast concrete 3rd variable diameters section, the height of prefabricated concrete pipe pile epimere and the first cement earth pile epimere are set between upper and lower section of pile tube It is highly equal, height and the first variable diameters section of the 3rd variable diameters section it is highly equal, the bottom of prefabricated concrete pipe pile and The bottom of the second cement earth pile maintains an equal level.
3. upper and lower part as claimed in claim 2 expands the compound pile tube of shape soil cement, it is characterised in that the precast concrete The side wall of pile tube is uniformly distributed muscle body, and the periphery of muscle body sets stirrup.
4. upper and lower part as claimed in claim 3 expands the compound pile tube of shape soil cement, it is characterised in that the trend of the muscle body Trend with prefabricated concrete pipe pile side wall is consistent.
5. upper and lower part as claimed in claim 1 expands the compound pile tube of shape soil cement, it is characterised in that first soil cement Stake and the second cement earth pile are cement mixing method or soil cement bored concrete pile.
6. upper and lower part as claimed in claim 1 expands the compound pile tube of shape soil cement, it is characterised in that second soil cement The epimere of stake and the stake footpath of hypomere are equal.
7. upper and lower part as claimed in claim 1 expands the compound pile tube of shape soil cement, it is characterised in that the first variable diameters section, the Two variable diameters section and the 3rd variable diameters section are not more than 12 ° with the angle of the axis of prefabricated concrete pipe pile.
8. upper and lower part as claimed in claim 1 expands the compound pile tube of shape soil cement, it is characterised in that second soil cement External diameter at least 20mm of the stake footpath of stake more than prefabricated concrete pipe pile.
9. the upper and lower part as described in claim 1-8 is any expands the compound pile tube of shape soil cement, it is characterised in that described second Cement earth pile epimere is located at compared with hard stratum, and stage casing is located at and is located at compared with hard stratum compared with Soft Soil Layer, hypomere.
10. upper and lower part as claimed in claim 9 expands the compound pile tube of shape soil cement, it is characterised in that described to be compared with hard stratum In close-dense state layer of sand, the cohesive soil of hard plastic-hardened condition, the silt of dense state in one or more Mixing;Described is cohesive soil that shape is moulded in soft modeling-stream compared with Soft Soil Layer.
CN201621323066.5U 2016-12-05 2016-12-05 A kind of upper and lower part expansion type soil cement is combined pile tube Active CN206233232U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621323066.5U CN206233232U (en) 2016-12-05 2016-12-05 A kind of upper and lower part expansion type soil cement is combined pile tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621323066.5U CN206233232U (en) 2016-12-05 2016-12-05 A kind of upper and lower part expansion type soil cement is combined pile tube

Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106480878A (en) * 2016-12-05 2017-03-08 周同和 A kind of upper and lower part expansion type soil cement is combined pile tube
CN107859036A (en) * 2017-10-26 2018-03-30 湖北工业大学 A kind of in-situ deposited prefabricated combining structure stake and its construction method suitable for karst region

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106480878A (en) * 2016-12-05 2017-03-08 周同和 A kind of upper and lower part expansion type soil cement is combined pile tube
CN107859036A (en) * 2017-10-26 2018-03-30 湖北工业大学 A kind of in-situ deposited prefabricated combining structure stake and its construction method suitable for karst region
CN107859036B (en) * 2017-10-26 2019-10-11 湖北工业大学 A kind of in-situ deposited prefabricated composite structure stake and its construction method suitable for karst region

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