CN215759042U

CN215759042U - Batter pile bearing structure

Info

Publication number: CN215759042U
Application number: CN202120602893.2U
Authority: CN
Inventors: 李瑛�; 谢家文; 张金红; 陈东; 刘兴旺; 童星
Original assignee: Zhejiang Province Institute of Architectural Design and Research
Current assignee: Zhejiang Province Institute of Architectural Design and Research
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-02-08
Anticipated expiration: 2031-03-24

Abstract

The utility model discloses an inclined pile supporting structure, and aims to overcome the defects of high cost, long construction period and poor stress stability of the conventional foundation pit supporting structure. The utility model discloses an including oblique stake, fender pile, back timber, arrange underground cement soil pile in, back timber rigid connection is on the fender pile, and oblique stake slope sets up, and in oblique stake lower extreme embedding cement soil pile, on the back timber was gone into to the anchor of oblique stake upper end. The inclined pile supporting structure has the advantages of less material consumption, cost saving, shortened construction period, stable and reliable stress, safety and high efficiency.

Description

Batter pile bearing structure

Technical Field

The utility model relates to a foundation pit supporting technology, in particular to an inclined pile supporting structure.

Background

There are more supporting construction forms in the excavation supporting engineering field at present, often use a fender formula structure as main excavation supporting system under the limited condition in foundation ditch boundary place, roughly can divide into row pile, underground continuous wall, stock, interior support and the combination of each structure and strut the form, each supporting construction shows its respective advantage and shortcoming and suitability in the application: the row pile support has better applicability and mature technology, but the deformation control capability of a pure cantilever structure is poorer; the underground continuous wall has good supporting effect, but has relatively high manufacturing cost and high construction requirement; the anchor rod support has lower manufacturing cost and simple and convenient construction, but the construction quality is difficult to control and is easy to exceed the red line; the inner support system can be divided into a horizontal inner support system and a vertical inclined support system, the horizontal inner support system can effectively control the deformation of the foundation pit, but the horizontal inner support system has poor economy in large-area foundation pit engineering, the manufacturing cost of the vertical inclined support system is controllable, the applicability is strong, but the traditional inclined throwing support has small rigidity, difficult excavation and long construction period. Therefore, the existing supporting structure needs to be improved, and a safer, more economical and more efficient foundation pit supporting method is provided.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides the inclined pile supporting structure which is small in material consumption, beneficial to saving cost and shortening construction period, stable and reliable in stress, safe and efficient.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an oblique pile bearing structure, includes oblique pile column, fender pile, capping beam, arranges the cement soil pile in the underground in, capping beam rigid connection on the fender pile, and the oblique pile column slope sets up, and in oblique pile column lower extreme embedding cement soil pile, the anchor was gone into on the capping beam to the oblique pile column upper end.

The inclined pile column is obliquely arranged between the cement soil pile and the capping beam, and plays a good role in supporting the fender pile. In the application of large-area foundation pit engineering, a plurality of inclined pile columns are arranged at intervals along the periphery of the foundation pit, so that the consumption of materials is less, the cost is saved, and the construction period is shortened. Compared with an anchor rod, the problem that a supporting structure is over red is solved, a cement-soil pile is directly constructed underground, the influence of soil layer conditions is small, the stress is clear, and the cement-soil pile is stable and reliable. Compared with a vertical diagonal bracing system, the method has the advantages that soil does not need to be left in the pit, a partial bottom plate does not need to be poured firstly, a bracket of the bottom plate is constructed to provide counter force, the bottom of the pit can be directly excavated, the construction period is short, and the construction is simple and convenient. Can change holistic length and rigidity through the specification of adjustment batter pile, satisfy the excavation supporting requirement of different degree of depth, different soil layers, different load conditions, adaptability is stronger, has better application effect. The inclined pile supporting structure has the advantages of less material consumption, cost saving, shortened construction period, stable and reliable stress, safety and high efficiency.

Preferably, the profile steel stand columns are arranged below the inclined pile columns, the cross beams are connected between the adjacent profile steel stand columns, and the inclined pile columns are welded with the profile steel stand columns through the cross beams. When the batter pile post is longer, the shaped steel stand has played fine supporting role, has improved the bearing capacity of batter pile post greatly.

Preferably, the cement-soil pile comprises an anchoring section and a reinforcing section, the reinforcing section is arranged below the anchoring section, and the lower end of the inclined pile column is embedded into the anchoring section. The embedding of batter pile post has been made things convenient for to the anchor section, consolidates the section and is favorable to guaranteeing the support intensity of soil cement stake to the batter pile post.

Preferably, the length of the anchoring section is not less than 4 meters, and the length of the reinforcing section is not less than 3 meters. The length setting of anchor section and reinforcing section is reasonable, and the embedding of the oblique stake of being convenient for is favorable to improving the support intensity to the oblique stake lower extreme.

Preferably, the outer wall of the lower part of the inclined pile column is rigidly connected with a plurality of studs, and the studs are arranged in the cement soil pile. The arrangement of the stud is beneficial to improving the bonding strength of the inclined pile column and the cement-soil pile.

Preferably, the lower end of the inclined pile column is connected with an end plate, and the edge of the end plate extends outwards to form the inclined pile column. The end plate is beneficial to increasing the supporting area and improving the bearing capacity.

Preferably, the length of the upper end of the batter pile anchored into the capping beam is not less than 0.4 m. The inclined pile column is reliably connected after being anchored into the capping beam.

Preferably, the inclined pile column is inclined at an angle of 45 degrees to the horizontal.

Compared with the prior art, the utility model has the beneficial effects that: the inclined pile supporting structure is small in material consumption, beneficial to saving cost and shortening construction period, stable and reliable in stress, safe and efficient.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

fig. 2 is a schematic view illustrating the connection of the batter post according to the present invention with a soil-cement pile;

FIG. 3 is a top view of a single angled pile post of the present invention;

FIG. 4 is a top view of a double slanted pile of the present invention;

in the figure: 1. inclined pile column, 2, fender pile, 3, capping beam, 4, cement-soil pile, 5, angle steel, 6, batten plate, 7, stud, 8, end plate, 22, water stop plate, 23, bottom plate cushion layer, 24, bottom plate, 25, bottom plate force transmission belt, 26, basement outer wall, 27, floor slab, 28 and floor slab force transmission belt.

Detailed Description

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example (b): an inclined pile supporting structure (see attached figures 1 to 3) comprises an inclined pile column 1, a fender pile 2, a capping beam 3 and a cement-soil pile 4 arranged underground, wherein the capping beam is rigidly connected to the fender pile, the inclined pile column is obliquely arranged, the lower end of the inclined pile column is embedded into the cement-soil pile, and the upper end of the inclined pile column is anchored into the capping beam; the cement soil pile is obliquely arranged along the length direction of the inclined pile column. The inclined pile column forms an inclined angle of 45 degrees with the horizontal plane. The inclined pile column adopts a steel lattice column, the cross section of the inclined pile column is square, angle steel 5 is arranged at the corner of the inclined pile column, and gusset plates 6 are welded between adjacent angle steel.

The cement soil pile comprises an anchoring section and a reinforcing section, wherein the reinforcing section is arranged below the anchoring section, and the lower end of the inclined pile column is embedded into the anchoring section. The length of the anchoring section is not less than 4 meters, and the length of the reinforcing section is not less than 3 meters. The outer wall of the lower part of the inclined pile column is rigidly connected with a plurality of studs 7, and the studs are arranged in the cement soil pile. The lower end of the inclined pile column is connected with an end plate 8, and the edge of the end plate extends outwards to form the inclined pile column. And a plurality of shear-resistant steel bars are arranged in the coping near one side of the inclined pile column, or studs are welded in the range of anchoring the upper end of the inclined pile column into the coping. The length of the upper end of the inclined pile column anchored into the capping beam is not less than 0.4 m.

The profile steel stand columns are arranged below the inclined pile columns, the cross beams are connected between the adjacent profile steel stand columns, and the inclined pile columns are welded with the profile steel stand columns through the cross beams. When the length of the inclined pile column is greater than 10 meters, the profile steel upright column is arranged at the midspan position, and the overall stability of the inclined pile column is improved. When the pile is applied to a deep foundation pit, the load is large, two inclined pile columns can be connected and spliced into a group through connecting angle steel, and then the inclined pile columns are embedded into cement soil piles (see attached drawing 4). Or the plane space between two adjacent oblique pile columns is shortened so as to improve the bearing capacity.

When the inclined pile supporting structure is constructed, the method comprises the following steps: firstly, constructing a fender post; secondly, drilling an inclined hole in the foundation pit; thirdly, constructing a cement-soil pile and an empty stirring section in the inclined hole, wherein the empty stirring section is arranged above the cement-soil pile, and the final strength of the cement-soil pile is not lower than 4 MPa; fourthly, before the cement-soil pile and the empty stirring section are condensed, embedding the lower end of the inclined pile column into the cement-soil pile to a designed depth, and ensuring that the inclination angle of the inclined pile column is the same as the inclination angle of the cement-soil pile; and fifthly, constructing a capping beam at the upper end of the fender pile, and anchoring the upper end of the inclined pile column into the capping beam to ensure that the fender pile and the inclined pile column are rigidly connected through the capping beam.

Excavation is carried out on the earth of the whole foundation pit after supporting is finished, after the excavation of the earth of the whole foundation pit is finished, a water stop plate 22 is connected to an inclined pile, the water stop plate is close to the bottom of the foundation pit, and then basement structures such as a bottom plate cushion layer 23, a bottom plate 24, a bottom plate force transmission belt 25, a basement outer wall 26, a floor slab 27 and a floor slab force transmission belt 28 are sequentially constructed at the bottom of the foundation pit and supporting measures are replaced. And finally, cutting off the inclined pile column above the bottom plate surface, backfilling the earthwork of the fertilizer groove, and finishing the construction of the basement structure.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the utility model as set forth in the appended claims.

Claims

1. The utility model provides an oblique pile bearing structure, characterized by includes oblique pile column, fender pile, capping beam, arranges the soil cement pile in the underground in, and capping beam rigid connection sets up on the fender pile, and the oblique pile column slope, and in oblique pile column lower extreme embedding soil cement pile, the upper end anchor of oblique pile column goes into on the capping beam.

2. The batter pile support structure according to claim 1, wherein a section steel upright is disposed under the batter pile, a cross beam is connected between adjacent section steel uprights, and the batter pile and the section steel uprights are welded by the cross beam.

3. A batter pile support structure according to claim 1, wherein the soil-cement pile comprises an anchoring section and a reinforcing section, the reinforcing section being disposed below the anchoring section, and the lower end of the batter pile column being embedded in the anchoring section.

4. A batter pile support structure according to claim 3, wherein the length of the anchoring section is not less than 4 metres and the length of the reinforcing section is not less than 3 metres.

5. A batter pile support structure according to claim 1, wherein a plurality of pegs are rigidly connected to the outer wall of the lower portion of the batter pile post, the pegs being disposed in the soil-cement pile.

6. A batter pile support structure according to any one of claims 1 to 5, wherein the lower end of the batter pile post is connected to an end plate, the edge of the end plate extending outwardly from the batter pile post.

7. A batter pile support structure according to any one of claims 1 to 5, wherein the length of the upper end of the batter pile anchored to the capping beam is not less than 0.4 m.

8. A batter pile support structure according to any one of claims 1 to 5, wherein the batter piles are inclined at an angle of 45 ° to the horizontal.