CN210263018U

CN210263018U - Novel club-footed pile with wing plate

Info

Publication number: CN210263018U
Application number: CN201920562808.7U
Authority: CN
Inventors: 邓美旭; 蒋宗南; 于娜; 于喆; 孟强
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-04-07
Anticipated expiration: 2029-04-24

Abstract

The utility model relates to a novel take aerofoil club-footed pile belongs to building pile foundation engineering technical field, for the resistance to compression of solving the stake and the low problem design of resistance to plucking bearing capacity. The utility model discloses constitute by pile body, pterygoid lamina and expand end base, the pile body be hexagonal prism, the pterygoid lamina cross section for circle ring shape, set up in pile body side surface, evenly arrange along pile body top-down, link to each other with pile body rigidity, expand end base be hexagonal prism table body, cross sectional area top-down crescent. The structure is simple and convenient to construct, high in engineering practicability, capable of reinforcing the soil body around the pile, capable of greatly improving the side friction resistance of the pile, high in bearing capacity and capable of being widely applied to various types of soft soil foundations.

Description

Novel club-footed pile with wing plate

Technical Field

The utility model belongs to the technical field of building pile foundation engineering, concretely relates to club-footed pile especially relates to a novel take aerofoil club-footed pile.

Background

With the rapid development of modern building industry and the breakthrough and continuous progress of science and technology, engineering construction projects in coastal areas of China are gradually increased, and various types of soft soil strata are widely distributed in coastal areas of China, the soft soil strata have high compressibility and high water content, and the bearing capacity and the shear strength of foundations are very low, so that the construction on the foundations is easy to have large uneven settlement, which causes unstable structure damage, therefore, the original foundations need to be reinforced, and the method of driving prefabricated steel pipe piles to improve the bearing capacity is one of the commonly used methods. Because the structure of the soil in the soft soil foundation is loose, larger gaps are formed among soil particles, the action of the pile and the surrounding soil layer is weaker, the side frictional resistance of the pile is difficult to exert, and the bearing capacity is lower, therefore, under the subsidy of the national natural science foundation project (number: 41372288), aiming at the characteristics of various soft soil foundations, a novel bottom-expanding pile with a wing plate is developed to treat the unfavorable geological foundation, so that the bearing characteristic of the pile is improved, and the uneven settlement of the foundation is very necessary to be reduced.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the utility model provides a novel take wing plate club-footed pile can realize the reinforcement of the soil body all around the stake, increases substantially stake side frictional resistance, and bearing capacity is than higher, but wide application in various types of soft soil foundation.

The utility model adopts the technical proposal that: a novel pedestal pile with wing plates mainly comprises a pile body, wing plates and a pedestal; the pile body is a hexagonal prism; the cross section of the wing plate is circular, is arranged on the side surface of the pile body, is uniformly arranged along the pile body from top to bottom and is rigidly connected with the pile body; the pedestal is a hexagonal frustum, and the cross section area is gradually increased from top to bottom.

The utility model discloses a construction application method is: a novel pedestal pile with wing plates is constructed by firstly adopting a transport vehicle to transport the pedestal pile to a designated position, then firmly binding the pedestal pile by using a steel wire rope and a rigging at a position about 1m away from the top end of the pile, starting a crane to hoist the pedestal pile, aligning the bottom end of the pile to the center of a pile position, slowly putting down the pedestal pile and inserting the pedestal pile into soil. The pile is inserted in the pile and the deviation of verticality is not over 0.5%, and the pile cap is fastened to the top of the pile, so that the rigging can be removed. After the bottom end of the pile is inserted into the pile position, the pile is hammered for one time and the other time by a low hammer, and after the pile is embedded into the soil to a certain depth, the pile is vertically stable. And during piling, a heavy hammer is adopted for low-impact and low-lifting-weight driving, the heavy hammer is selected according to geological conditions, pile structures and construction conditions, and after the club-footed pile is driven into the designed elevation of the foundation, the pile driver is removed to complete construction.

The utility model discloses a theory of operation is: the cross section of a novel flared pile with wing plates is in a regular hexagon shape, the contact area of the pile body and the surrounding soil body is large, and the friction resistance of the side of the pile is increased; the side surface of the pile body is provided with the wing plate, so that the contact area between the pile body and the surrounding soil body is increased, and the smoothness degree of the side surface of the pile body is reduced, so that the side frictional resistance of the pile is increased, and the bearing capacity of the pile body is improved; the wing plates are embedded in the soil body, so that the stress of the pile body and the stress of the soil body are coordinated, and the stability and the compression resistance of the pile foundation are improved; due to the existence of the bottom expanding base, the variable cross section of the pile body is realized, the contact area with the surrounding soil body is increased, and the uplift resistance and the stability of the pile body are improved. The method for adjusting the verticality of the pile is to observe the pile from the front and the side by two hanging hammers in a direction of 90 degrees, so that the verticality deviation after the pile is buried is not more than the national standard allowable range, namely the verticality deviation is controlled within 0.5 percent. In the piling process, two persons can observe the front and the side surfaces at any time, if the inclination is found, the inclination can be immediately adjusted, and the verticality deviation after piling is not larger than the national standard allowable range.

The utility model has the advantages that: the cross section of a novel club-footed pile with wing plates is regular hexagon, so that the soil squeezing effect during piling can be reduced, the influence and damage on peripheral buildings are reduced, the construction speed is high, the horizontal extension parts of the wing plates are small, the pile can be easily driven into a soil body, and the construction is convenient; the wing plates can generate a synergistic effect with the surrounding soil layer, and can effectively improve the physical and mechanical properties of the soil body around the pile, so that the bearing capacity of the pile body is improved, the horizontal displacement of the pile body is limited by the wing plates, the buckling of the pile body is prevented, and meanwhile, the load transmitted by the pile body is transmitted to the surrounding soil body, so that the load of the pile body is reduced; the bottom end of the pile body is provided with the bottom expanding base, so that the contact area with the surrounding soil body is increased, the bottom expanding base is embedded and fixed in the soil and combined with the soil body together to bear force jointly, the stability of the pile body is improved, and the uplift resistance of the pile body is improved.

Drawings

Fig. 1 is the schematic view of the novel pedestal pile with the wing plate of the utility model.

Reference numerals: 1-pile body; 2-wing plate; 3-expanding the base.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a novel club-footed pile with wing plates mainly comprises a pile body 1, wing plates 2 and a club-footed base 3; the pile body 1 is a hexagonal prism; the cross section of the wing plate 2 is circular, is arranged on the side surface of the pile body 1, is uniformly arranged along the pile body 1 from top to bottom, and is rigidly connected with the pile body 1; the pedestal 3 is a hexagonal frustum, and the cross section area is gradually increased from top to bottom.

When the pile is formed, the novel belled pile with the wing plates is prefabricated in a factory according to the pile length and the pile diameter required on site, and all parts of the belled pile are welded or integrally formed so that the belled pile has enough strength.

During construction, the pile is transported to a designated position by a transport vehicle, then the pile is firmly bound by a steel wire rope and a rigging at a position about 1m away from the top end of the pile, a crane is started to hoist the pedestal pile, the bottom end of the pile is aligned to the center of the pile position, and the pedestal pile is slowly put down and inserted into soil. The pile is inserted in the pile and the deviation of verticality is not over 0.5%, and the pile cap is fastened to the top of the pile, so that the rigging can be removed. After the bottom end of the pile is inserted into the pile position, the pile is hammered for one time and the other time by a low hammer, and after the pile is embedded into the soil to a certain depth, the pile is vertically stable. And during piling, a heavy hammer is adopted for low-impact and low-lifting-weight driving, the heavy hammer is selected according to geological conditions, pile structures and construction conditions, and after the club-footed pile is driven into the designed elevation of the foundation, the pile driver is removed to complete construction.

Claims

1. A novel pedestal pile with wing plates mainly comprises a pile body, wing plates and a pedestal; the pile body is a hexagonal prism; the cross section of the wing plate is circular, is arranged on the side surface of the pile body, is uniformly arranged along the pile body from top to bottom and is rigidly connected with the pile body; the pedestal is a hexagonal frustum, and the cross section area is gradually increased from top to bottom.