CN214783995U - Composite steel pipe column foundation pit supporting system based on rapid construction - Google Patents
Composite steel pipe column foundation pit supporting system based on rapid construction Download PDFInfo
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- CN214783995U CN214783995U CN202120717747.4U CN202120717747U CN214783995U CN 214783995 U CN214783995 U CN 214783995U CN 202120717747 U CN202120717747 U CN 202120717747U CN 214783995 U CN214783995 U CN 214783995U
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Abstract
The utility model provides a compound steel-pipe column foundation ditch supporting system based on quick construction, including fender pile, pile body strengthening member, tie beam, braced system and peripheral back up collar, a plurality of fender piles along the continuous laminating distribution of foundation ditch periphery, each fender pile in all be provided with pile body strengthening member, the pile heart distance of two adjacent fender piles equals the centre distance between the pile body strengthening member who establishes in these two fender piles; the connecting beam is arranged along the depth direction of the foundation pit, and is fixedly connected with the support piles. The utility model discloses make full use of fender pile self rigidity forms shear strength deposit through inserting the stiffening member in the fender pile, the deformation in the peripheral stratum of reasonable control, simple structure, safe and reliable, construction convenience, quick. Meanwhile, the protection of the existing building and pipelines is realized, and the safety risk of construction under the overhead high-voltage line is well controlled.
Description
Technical Field
The utility model relates to a deep silt stratum supporting field, in particular to compound steel-pipe column excavation supporting system based on quick construction.
Background
The depth of a certain engineering foundation pit is 12m, soft soil layers such as filling soil, silt sand layers and the like are mainly distributed in the depth range, the soil layers are poor in self stability, the underground water level of the site is buried by about 1m, the periphery of the foundation pit is close to a house and a buried high-voltage cable trench, and the requirements on deformation control and protection of the peripheral environment are very high. Meanwhile, the local foundation pit is located under the overhead high-voltage line, so that the construction safety risk is very high, and the requirement on construction mechanical equipment is high.
Aiming at the above conditions, the support selection types which can be selected mainly include the following: the support system has high self rigidity, has good protection effect on surrounding buildings under the condition of a soft soil layer, but has long construction time and can not meet the requirement of the construction period; the support system is a prefabricated component, the self rigidity is high, the construction speed is high, the size of construction mechanical equipment is large, no construction space is formed below a high-voltage line, and the construction potential safety hazard is great; open caisson, this support body adopt the segmentation to pour, can pour in the excavation simultaneously, and self stability is good and construction speed is very fast, and required construction space is less, nevertheless can't guarantee existing municipal pipeline safety and maintenance condition.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem, the utility model provides a compound steel-pipe column excavation supporting system based on quick construction, the utility model is suitable for a complicated and higher foundation ditch engineering of risk of all ring edge border environmental condition can realize rapid prototyping under unfavorable engineering geological conditions such as high water level silt matter stratum, has gained good society and economic benefits.
The utility model adopts the technical proposal that:
a composite steel pipe column foundation pit supporting system based on rapid construction comprises a plurality of supporting piles, pile body reinforcing members, connecting beams, a supporting system and a peripheral reinforcing ring, wherein the number of the supporting piles is multiple, the plurality of the supporting piles are continuously attached and distributed along the periphery of a foundation pit, the pile body reinforcing members are arranged in each supporting pile, and the pile center distance between every two adjacent supporting piles is equal to the center distance between the pile body reinforcing members arranged in the two supporting piles; the connecting beam is arranged along the depth direction of the foundation pit in one or more ways and is fixedly connected with the support piles; two ends of the supporting system are vertically connected with the connecting beam planes corresponding to the supporting system in the plane; and a peripheral reinforcing ring is formed after soil mass on the outer side of the support pile is reinforced.
The support piles are seamless prefabricated steel pipes, and the outer diameter of each support pile is 400-800 mm.
The pile body reinforcing member is prefabricated I-shaped steel, the height of an I-shaped steel web plate and the width of a flange of the I-shaped steel web plate do not exceed the inner diameter of the supporting pile, and the arrangement directions of the I-shaped steel web plate and the supporting pile are mutually perpendicular in a plane.
The connecting beam is prefabricated I-shaped steel.
The supporting system is composed of a plurality of supports which are continuously arranged at equal intervals, the supports are prefabricated steel pipes, and the outer diameter of each support is 300-600 mm.
The peripheral reinforcing ring is reinforced by adopting a jet grouting pile or stirring pile process, and the pile diameter is 300-600 mm.
The connecting beam and the support piles are connected through bolts and are reinforced by welding.
Two adjacent support piles are connected through positive and negative lock catches.
The utility model has the advantages that:
the utility model provides a this kind of compound steel-pipe column excavation supporting system based on quick construction can implement fast under deep silt stratum condition, laminate closely in succession the fender pile and insert the stiffener in the stake, the steel-pipe pile is with static pressure mode pile sinking, need not drilling, it is fixed with the fender pile with braced system through linking the roof beam, consolidate the fender pile outside certain limit in the soil body simultaneously, form a compound system of strutting, be applicable to the complicated and higher foundation pit engineering of risk of all ring edge border environmental condition, can realize rapid prototyping under bad engineering geological conditions such as high water level silt stratum, good society and economic benefits have been gained.
Drawings
Fig. 1 is a schematic structural plan view of the present invention.
Fig. 2 is a schematic view of the present invention in a longitudinally expanded state.
Fig. 3 is a cross-sectional view of the structure of the present invention.
In the figures, the reference numbers are: 1. supporting piles; 2. a first pile support; 3. a second support pile; 4. a first pile reinforcement member; 5. a second pile reinforcement member; 6. a tie-beam; 7. a wale stiffener; 8. supporting; 9. a bolt; 10. a peripheral reinforcing ring; 11. welding seams; 12. connecting the steel batten plates; 13. welding seams of the first support piles; 14. welding seams of the second support piles; 15. a first pile reinforcement member weld; 16. and welding a second pile body reinforcing member.
Detailed Description
Example 1:
in order to overcome the problem, the utility model provides a compound steel pipe column excavation supporting system based on quick construction as shown in fig. 1-3, the utility model is suitable for a quick shaping under the bad engineering geological conditions such as high water level silt stratum can be realized to the complicated and higher foundation ditch engineering of risk of all ring edge border environmental condition, has gained good society and economic benefits.
A composite steel pipe column foundation pit supporting system based on rapid construction comprises a plurality of supporting piles 1, pile body reinforcing members, connecting beams 6, a supporting system and a peripheral reinforcing ring 10, wherein the supporting piles 1 are continuously attached and distributed along the periphery of a foundation pit, the pile body reinforcing members are arranged in each supporting pile 1, and the pile center distance between every two adjacent supporting piles 1 is equal to the center distance between the pile body reinforcing members arranged in the two supporting piles 1; one or more connecting beams 6 are arranged along the depth direction of the foundation pit, and the connecting beams 6 are fixedly connected with the support piles 1; two ends of the supporting system are vertically connected with the connecting beam 6 corresponding to the supporting system in the plane; and a peripheral reinforcing ring 10 is formed after soil mass outside the support piles 1 is reinforced.
The utility model is used for under the limited condition in deep silt stratum and construction operation space, can implement fast and play a role. Compared with the prior art, the utility model discloses a static pressure mode pile sinking compares with traditional pre-drilling mode, can increase substantially and become stake speed, and make full use of fender pile self rigidity forms the shear strength deposit through inserting stiffening member in fender pile 1, and the deformation in the peripheral stratum of reasonable control, simple structure, safe and reliable, construction convenience, quick. Meanwhile, the problem of construction site limitation can be solved by adopting a pile splicing mode according to actual conditions, the protection of existing buildings and pipelines is realized, the safety risk of construction under an overhead high-voltage line is well controlled, and the method has a good application prospect in foundation pit support in the fields of municipal engineering and the like with dense existing buildings (structures) and limited operation space.
The utility model provides a this kind of compound steel-pipe column excavation supporting system based on quick construction can implement fast under deep silt stratum condition, 1 continuous laminating of fender pile is closely inserted and insert the stiffener in the stake, the steel-pipe pile is with static pressure mode pile sinking, need not drilling, it is fixed with fender pile 1 with braced system through even tie beam 6, consolidate the 1 outside certain limit soil body of fender pile simultaneously, form compound system of strutting, be applicable to the complicated and higher foundation ditch engineering of risk of all ring edge border environmental conditions, can realize quick shaping under unfavorable engineering geological conditions such as high water level silt stratum, good society and economic benefits have been gained.
Example 2:
based on embodiment 1, in this embodiment, preferably, the support piles 1 are seamless prefabricated steel pipes, and the outer diameter is 400-800 mm.
Preferably, the pile body reinforcing member is prefabricated I-shaped steel, the height of an I-shaped steel web plate and the width of a flange of the pile body reinforcing member do not exceed the inner diameter of the support pile 1, and the arrangement directions of the I-shaped steel web plate and the support pile 1 are mutually perpendicular in a plane.
In the utility model, as shown in fig. 1 and 2, a support pile 1 comprises a first support pile 2 and a second support pile 3, a first pile body reinforcing member 4 is arranged in the first support pile 2, and a second pile body reinforcing member 5 is arranged in the second support pile 3, wherein the first support pile 2 and the second support pile 3 are formed by welding a plurality of piles; the first piles 2 and the second piles 3 are arranged alternately so that the first pile welds 13 on the first piles 2 and the second pile welds 14 on the second piles 3 are staggered. The first pile reinforcement member 4 and the second pile reinforcement member 5 are formed by sequentially welding a plurality of members, and the first pile reinforcement member weld seam 15 on the first pile reinforcement member 4 and the second pile reinforcement member weld seam 16 on the second pile reinforcement member 5 also need to be distributed in a staggered manner. The staggered distribution enhances the welding strength and ensures the stability of the support pile 1. The distance between two adjacent first support piles 2 is equal to the distance between the second support piles 3.
Preferably, the connecting beam 6 is prefabricated I-steel.
In the utility model, as shown in fig. 3, the waist rail stiffening plate 7 is arranged on the connecting beam 6, the connecting steel batten plate 12 is arranged between the connecting beam 6 and the support pile 1, and the waist rail stiffening plate 7 increases the strength of the connecting beam 6.
Preferably, the support system is formed by a plurality of supports 8 which are continuously arranged at equal intervals, the supports 8 are prefabricated steel pipes, and the outer diameter of each support is 300-600 mm. The support 8 is connected with the connecting beam 6 in a welding mode, and a welding seam 11 exists at the welding position.
Preferably, the peripheral reinforcing ring 10 is reinforced by a jet grouting pile or stirring pile process, and the pile diameter is 300-600 mm.
Preferably, the connecting beam 6 and the support pile 1 are connected through the bolt 9 and simultaneously reinforced through welding.
Preferably, two adjacent support piles 1 are connected through positive and negative lock catches.
The utility model discloses in, in the different degree of depth department of foundation ditch, set up one or multichannel even tie beam 6 as required, even tie beam 6 vertically is axisymmetric arrangement along the foundation ditch in the plane, adopts bolt 9 to be connected between even tie beam 6 and the fender pile 1, and welded fastening simultaneously supports 8 both ends and two rows of even tie beam connected modes and adopts the welding solid.
In the composite steel pipe column foundation pit supporting system which is rapidly implemented under the condition of the deep sludge stratum, the pile body of the supporting pile 1 is formed into a pile in a static pressure mode, the sections of the pile body are welded, a reinforcing member is inserted into the range of the pile body to serve as stress reinforcement of the welding line, and concrete is injected into the pile body. The surrounding soil body is reinforced outside the support piles to form a peripheral reinforcing ring 10, so that underground water can be prevented from permeating into the foundation pit from the gap between the support piles. By the method, the foundation pit supporting system can be quickly implemented under the condition of a deep sludge top layer, and the method is particularly suitable for deep foundation pit engineering under the condition of short construction period and limited operation space.
The above examples are merely illustrations of the present invention, and do not constitute limitations to the scope of the present invention, and all designs identical or similar to the present invention belong to the scope of the present invention. The device structure and the method steps not described in detail in the present invention are prior art, and no further explanation will be given in the present invention.
Claims (8)
1. The utility model provides a compound steel pipe column foundation ditch support system based on quick construction which characterized in that: the foundation pit supporting structure comprises supporting piles (1), pile body reinforcing members, connecting beams (6), a supporting system and peripheral reinforcing rings (10), wherein the number of the supporting piles (1) is multiple, the supporting piles (1) are continuously attached and distributed along the periphery of a foundation pit, the pile body reinforcing members are arranged in each supporting pile (1), and the pile center distance between every two adjacent supporting piles (1) is equal to the center distance between the pile body reinforcing members arranged in the two supporting piles (1); one or more connecting beams (6) are arranged along the depth direction of the foundation pit, and the connecting beams (6) are fixedly connected with the support piles (1); two ends of the supporting system are vertically connected with the connecting beam (6) corresponding to the supporting system in the plane; and a peripheral reinforcing ring (10) is formed after soil mass on the outer side of the support pile (1) is reinforced.
2. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the support piles (1) are seamless prefabricated steel pipes, and the outer diameter of each support pile is 400-800 mm.
3. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the pile body reinforcing member is prefabricated I-shaped steel, the height of an I-shaped steel web plate and the width of a flange of the I-shaped steel web plate must not exceed the inner diameter of the supporting pile (1), and the arrangement directions of the I-shaped steel web plate and the supporting pile (1) are mutually vertical in a plane.
4. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the connecting beam (6) is prefabricated I-shaped steel.
5. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the supporting system is formed by continuously arranging a plurality of supports (8) at equal intervals, the supports (8) are prefabricated steel pipes, and the outer diameter of each support is 300-600 mm.
6. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the peripheral reinforcing ring (10) is reinforced by adopting a jet grouting pile or stirring pile process, and the pile diameter is 300-600 mm.
7. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: the connecting beam (6) is connected with the support pile (1) through the bolt (9) and meanwhile is reinforced and connected through welding.
8. The composite steel pipe column foundation pit supporting system based on rapid construction according to claim 1, is characterized in that: two adjacent supporting piles (1) are connected through positive and negative lock catches.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120717747.4U CN214783995U (en) | 2021-04-09 | 2021-04-09 | Composite steel pipe column foundation pit supporting system based on rapid construction |
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| CN202120717747.4U CN214783995U (en) | 2021-04-09 | 2021-04-09 | Composite steel pipe column foundation pit supporting system based on rapid construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116451329A (en) * | 2023-06-14 | 2023-07-18 | 中铁二十三局集团第一工程有限公司 | Parameter design method for composite support of steel pipe pile and cast-in-situ pile |
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2021
- 2021-04-09 CN CN202120717747.4U patent/CN214783995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116451329A (en) * | 2023-06-14 | 2023-07-18 | 中铁二十三局集团第一工程有限公司 | Parameter design method for composite support of steel pipe pile and cast-in-situ pile |
| CN116451329B (en) * | 2023-06-14 | 2023-08-22 | 中铁二十三局集团第一工程有限公司 | Parameter design method for composite support of steel pipe pile and cast-in-situ pile |
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