CN211312544U - Tubular pile and steel pipe combination formula underground structure - Google Patents
Tubular pile and steel pipe combination formula underground structure Download PDFInfo
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- CN211312544U CN211312544U CN201922295693.2U CN201922295693U CN211312544U CN 211312544 U CN211312544 U CN 211312544U CN 201922295693 U CN201922295693 U CN 201922295693U CN 211312544 U CN211312544 U CN 211312544U
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Abstract
The utility model discloses a tubular pile and steel pipe combination formula underground structure, the foundation ditch is provided with the fender pile all around, and fender pile top is provided with the capping beam, the capping beam is connected with the bracing that is located the foundation ditch inboard, the bracing is formed by tubular pile and steel pipe combination, and the tubular pile is located below the hole end, and the steel pipe is connected to the tubular pile butt joint face, and the steel pipe is located above the hole end, and the capping beam is reconnected to the steel pipe.
Description
Technical Field
The utility model relates to a civil engineering technical field is a tubular pile and steel pipe combination formula underground structure particularly.
Background
At present, the domestic existing related processes mainly comprise: grouting steel pipe front support, anchor rope back-pulling HU type enclosure structures (the enclosure structures comprise a top ring beam, H-shaped steel, U-shaped steel sheet piles, a group of steel pipes and a group of anchor ropes), soft soil foundation pit slope-making type recyclable steel enclosure structures (the enclosure structures comprise a top pressing plate and at least three groups of steel pipes), lattice steel member-bag combined inclined support foundation pit supporting structures (the supporting structures comprise lattice steel members and grouting bags). The processes are applied to actual engineering and achieve good effects.
The existing related processes are innovative, but the coordination problems of economy and safety are not well solved. The relatively economic support form weakens the strength of the enclosure structure, for example, the strength and stability of the steel pipes in the above processes are low; and the relatively high form of strutting of security lacks economic nature again, for example the built-in slip casting bag of lattice formula steel member, and lattice formula steel member below the pit bottom all can not retrieve, and the material waste is great.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a tubular pile and steel pipe combination formula underground structure is provided.
In order to achieve the purpose, the technical scheme adopted by the patent is as follows:
the utility model provides a tubular pile and steel pipe combination formula underground structure, the foundation ditch is provided with the fender pile all around, and fender pile top is provided with the capping beam, the capping beam is connected with the bracing that is located the foundation ditch inboard, the bracing is formed by tubular pile and steel pipe combination, and the tubular pile is located below the hole end, and the steel pipe is connected to the tubular pile butt joint face, and the steel pipe is located above the hole end, and the capping beam is reconnected to the steel pipe.
The butt joint surface of the pipe pile is provided with an end plate used for connecting a steel pipe.
The steel pipe is connected with the pipe pile end plate through a bolt.
The steel pipe is connected with the pipe pile end plate through welding.
The steel pipe is a square steel pipe.
The steel pipe is a round steel pipe.
The outer diameter of the steel pipe is smaller than that of the pipe pile.
The inclined strut is inserted in a hole guiding mode, and the hole guiding mode is a high-pressure jet grouting pile hole guiding mode.
And angle steel is arranged at the joint of the steel pipe and the tubular pile for reinforcement.
Concrete is poured into the joint of the steel pipe and the pipe pile, and shear-resistant steel bars are arranged in the concrete.
The tubular pile is a prestressed reinforced concrete tubular pile.
Has the advantages that: the tubular pile and steel pipe combined foundation pit supporting structure has the advantages that the inserted diagonal brace is formed by combining the square steel pipe and the PHC tubular pile, and the structure has high strength and stability; meanwhile, compared with a steel pipe, the prefabricated PHC pipe pile has low production energy consumption and is used for being inserted below the pit bottom to serve as a non-recovery part, and the construction cost is reduced. The process has a promoting effect on industry progress, energy conservation and emission reduction, and has a very good market prospect.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is the tubular pile and steel pipe combination formula underground structure sketch map.
Fig. 2 is a schematic cross-sectional view of the connection between a square steel pipe and a tubular pile end plate.
FIG. 3 is a schematic diagram of the connection of square steel pipes and end plates of pipe piles.
FIG. 4 is a schematic diagram of a cross section structure of reinforcing the square steel pipe and the position of a pipe pile joint.
FIG. 5 is a comparison table of the scheme of inserting inclined struts in the tubular pile-square steel tube and the scheme of inserting inclined steel tubes in the grouting.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, the inclined strut structure is formed by combining a PHC pipe pile 1 and a square steel pipe 2, and is formed by firstly obliquely guiding a hole to the bottom elevation position of the inclined strut by adopting a high-pressure jet grouting pile and then inserting the inclined strut structure. Wherein the square steel pipe is located above the foundation ditch bottom surface, and the PHC tubular pile is located below the foundation ditch bottom surface, and 2 one ends of square steel pipe are welded on 1 end plate of PHC tubular pile, and the other end is connected with capping beam or hat beam 3. The capping beam or crown beam 3 is located on top of the foundation pit fender pile 4.
The square steel pipe 2 is arranged above the pit bottom, so that the weight is light, the strength is high, and the hoisting, the recovery and the cutting are convenient; the PHC pipe pile 1 is arranged below the pit bottom, the strength is high, and the price is lower than that of a steel pipe; the PHC tubular pile and high-pressure jet grouting pile combined body is used as a bearing part of the inclined strut member, the combination strength is high, and the generated side resistance and end resistance are large.
When the PHC tubular pile 1 is inserted, a high-pressure jet grouting pile is obliquely constructed at the ground position to the elevation position of the bottom of the PHC tubular pile, and the diameter of the high-pressure jet grouting pile is larger than that of the tubular pile 1.
Referring to fig. 2 and 3, further, the cross section of the square steel tube 2 and the PHC tubular pile 1 does not exceed the range of the end plate 11 of the tubular pile 1, and the lower end of the square steel tube is welded with the end plate of the tubular pile. The lower end of the square steel pipe and the tubular pile end plate can also be connected by bolts.
Furthermore, the steel pipe is inserted into a reinforcement cage of the capping beam or the crown beam, short steel bars are arranged at the end part of the steel pipe inserted into the capping beam or the crown beam, and the steel pipe and the capping beam or the crown beam are integrated into a whole after pouring.
Referring to fig. 4, the joint position of the square steel tube 2 and the PHC pile 1 is reinforced by angle steel 21, and fine aggregate concrete 22 is poured into the square steel tube and the pile to ensure that 50cm long fine aggregate concrete 22 is filled in the square steel tube and the PHC pile, and shear steel bars 23 are arranged at the core pouring section.
Assuming that the soil layer condition, the pit depth and the fender pile specification are the same, the length of the inclined strut is 15m, the distance between the inclined struts is 5m, the distance between the pit bottom and the pit bottom is 5m, and the main technical indexes and the economic indexes of the PHC pipe pile-square steel pipe inserted inclined strut process and the grouting inserted inclined steel pipe are in a pair, such as fig. 5. According to the comparison result, the PHC tubular pile-square steel pipe inserted inclined strut has larger comprehensive section inertia moment than the inserted inclined steel pipe, the section strength and the member stability are higher, and the comprehensive cost per linear meter is lower than the inserted inclined steel pipe.
The scheme has the advantages that: the PHC pipe pile is adopted as a non-recovery structure below the pit bottom, so that the PHC pipe pile has great economic advantages compared with other steel materials; the cross-section bending modulus that the PHC tubular pile provided is higher than H shaped steel and round steel pipe, and the stability of buckling is better.
The scheme is innovated on the basis of the prior supporting technology, reduces the construction cost and the material waste, and makes the related technology step forward to the advanced, safe and economic direction.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a tubular pile and steel pipe combination formula underground structure, the foundation ditch is provided with the fender pile all around, and fender pile top is provided with the capping beam, the capping beam is connected with the bracing that is located the foundation ditch inboard, its characterized in that, the bracing is formed by tubular pile and steel pipe combination, and the tubular pile is located below the hole end, and the steel pipe is connected to the tubular pile butt joint face, and the steel pipe is located above the hole end, and the capping beam is reconnected to the steel pipe.
2. The combined type foundation pit supporting structure of tubular pile and steel pipe as claimed in claim 1, wherein the butt-joint surface of the tubular pile is provided with an end plate for connecting the steel pipe.
3. The tubular pile and steel tube combined foundation pit supporting structure according to claim 2, wherein the steel tube is connected with the tubular pile end plate by welding.
4. The tubular pile and steel pipe combined foundation pit supporting structure according to claim 1, wherein the steel pipe is a square steel pipe.
5. The tubular pile and steel pipe combined foundation pit supporting structure according to claim 1, wherein the steel pipe is a circular steel pipe.
6. The tubular pile and steel pipe combined foundation pit supporting structure according to claim 1, wherein the outer diameter of the steel pipe is smaller than the outer diameter of the tubular pile.
7. The tubular pile and steel pipe combined foundation pit supporting structure of claim 1, wherein the diagonal brace is inserted through a hole guiding mode, and the hole guiding mode is a high-pressure jet grouting pile hole guiding mode.
8. The tubular pile and steel pipe combined foundation pit supporting structure according to claim 1, wherein the steel pipe and tubular pile joint is reinforced by angle steel.
9. The combined type tubular pile and steel tube foundation pit supporting structure according to claim 1, wherein concrete is poured into the steel tube and the joint of the tubular pile, and shear-resistant steel bars are arranged in the concrete.
10. The tubular pile and steel pipe combined foundation pit supporting structure of claim 1, wherein the tubular pile is a prestressed reinforced concrete tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922295693.2U CN211312544U (en) | 2019-12-19 | 2019-12-19 | Tubular pile and steel pipe combination formula underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922295693.2U CN211312544U (en) | 2019-12-19 | 2019-12-19 | Tubular pile and steel pipe combination formula underground structure |
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| Publication Number | Publication Date |
|---|---|
| CN211312544U true CN211312544U (en) | 2020-08-21 |
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| CN201922295693.2U Active CN211312544U (en) | 2019-12-19 | 2019-12-19 | Tubular pile and steel pipe combination formula underground structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529739A (en) * | 2021-07-28 | 2021-10-22 | 王冰璇 | Coaxial expansion body assembly type support shaftless rotary sprayer and corresponding construction method |
-
2019
- 2019-12-19 CN CN201922295693.2U patent/CN211312544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529739A (en) * | 2021-07-28 | 2021-10-22 | 王冰璇 | Coaxial expansion body assembly type support shaftless rotary sprayer and corresponding construction method |
| CN113529739B (en) * | 2021-07-28 | 2023-07-28 | 王冰璇 | Coaxial expansion assembled support, shaftless rotary sprayer and corresponding construction method |
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