CN201148615Y

CN201148615Y - Steel tube pile foundation built by inseminate steel bar

Info

Publication number: CN201148615Y
Application number: CNU2007200885852U
Authority: CN
Inventors: 杨齐海; 王喜良; 高兴泽; 王鹤; 张国刚; 杨先权
Original assignee: China Railway Major Bridge Engineering Co Ltd
Current assignee: China Railway Major Bridge Engineering Co Ltd
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2008-11-12
Anticipated expiration: 2017-11-29

Abstract

The utility model discloses a steel pipe pile foundation for planting steel bar construction and is characterized in that the interior of a bedrock is fixedly connected with a steel bar part; the steel bar outside the bedrock is arranged in a steel pipe; the steel pipe is connected with at least a steel bar to integrally form the steel pipe pile foundation. The steel pipe pile foundation with novel and simple structure is suitable for underwater shallow overburden layer or bare bedrock. The utility model solves the problem that the steel pipe pile foundation on the underwater bedrock surface is difficult to be driven into the rock layer with sufficient depth, thus hardly ensuring the stability of the pile body; handles the problem through a small amount of construction; relatively simplifies the complicated steel pipe pile foundation on the underwater bedrock surface; and ensures the quality of the steel pipe pile foundation.

Description

The steel pipe pile basis that planting steel stick is built

Technical field

The utility model belongs to pile foundation construction, is specifically related to the steel pipe pile basis on a kind of shallow covering layer or the exposed basement rock under water.

Background technology

Build the steel pipe pile basis in the riverbed, generally adopt driven pile, promptly adopt piling machinery that steel pipe is squeezed into the certain degree of depth in riverbed, this moment, steel pipe pile can rely on the stake end and pile body ground on every side bearing capacity to be provided, also to keep stable.But in the riverbed of exposed bedrock, because the extremely shallow or intectate of covering layer, steel pipe pile is difficult to squeeze into the enough degree of depth in rock stratum again, so the stability of pile body is difficult to ensure.

Summary of the invention

The purpose of this utility model is to provide a kind of steel pipe pile basis that can guarantee that planting steel stick stable on shallow under water covering layer of steel pipe pile or the exposed basement rock is built, to address the above problem.

Technical scheme of the present invention is: it is partly to be connected and fixed with rod iron in the basement rock, and the outer rod iron of basement rock is located in the steel pipe, and steel pipe and at least one rod iron connect into integrally formed steel pipe pile basis.

Here the interior rod iron quantity of steel pipe pile can be one or more, arranges evenly that in steel pipe pile the rod iron diameter is selected according to the steel pipe pile force request, and rod iron should be selected the profile strong with grip of concrete for use.

The steel pipe pile basis of this structure is novel, simple; Be applicable to the steel pipe pile basis on shallow covering layer or the exposed basement rock under water.It has solved under water, and the steel pipe pile basis is difficult to squeeze into the enough degree of depth in rock stratum on the bedrock surface, so the stability of pile body is difficult to construction difficult problems such as guarantee; Solve problem by less relatively construction volume, steel pipe pile foundation construction on the bedrock surface under water of complexity is oversimplified relatively, guarantee the steel pipe pile mass of foundation.

Description of drawings

Fig. 1 planting steel stick is built steel pipe pile foundation structure schematic diagram.

Fig. 2～Fig. 5 planting steel stick is built the construction sequence schematic diagram on steel pipe pile basis.

The specific embodiment

Present embodiment is used for the explanation to the utility model claim, and protection domain of the present utility model is not limited to the following example.

As shown in Figure 1, be connected and fixed with rod iron 2 parts in the basement rock 5, basement rock 5 outer rod irons 2 are located in the steel pipe 3, and steel pipe 3 connects into integrally formed steel pipe pile basis with rod iron 2 by underwater concrete 4.Offer core-drawing hole 1 on basement rock 5, the aperture of loosing core is inserted in rod iron 2 in the hole 1 greater than rod iron 2 diameters, and core-drawing hole 1 footpath is less than steel pipe 3 internal diameters.

Its construction sequence is as follows:

As Fig. 2, on basement rock, drill through the small bore 1 of loosing core with light-duty geological drilling rig;

As Fig. 3, in the small bore 1 of loosing core, plant rod iron 2 under water by the diver;

Stable for rod iron, can between rod iron 2 and hole 1 wall, establish rod iron fastening devices 6.Rod iron fastening devices 6 can be a fixation fork, and fixed bar etc. can make rod iron fixing part or assembly.

As Fig. 4, under diver's the assistance steel pipe 3 is being socketed in the periphery of rod iron 2 and standing on the riverbed face;

As Fig. 5, adopt pouring underwater concrete 4 in vertical conduit normal direction steel pipe 3 bottoms and the small bore 1 of loosing core; Pouring underwater concrete is in steel pipe bottom and core-drawing hole.The steel pipe 2 outer underwater concretes of building are connected steel pipe 2 peripheries with basement rock 5

When treating that underwater concrete 4 reaches design strength, rock foundation firmly can be connected with steel pipe 3 by rod iron 2, form the steel pipe pile basis.The vertical bearing capacity of this pile foundation by rock foundation provide, horizontal bearing capacity provides jointly by rod iron 2 and underwater concrete 4.

The single steel pipe pile technical data of construction in case history of planting: the small bore diameter of loosing core is 8.0～12.0cm, hole depth 1.0～2.0m; Rod iron diameter 30.0～50.0mm, long 3.0～4.0m can place 1～3 in the every steel pipe; Steel pipe is plain edition steel pipes with straight or spiral steel pipe, diameter 500.0～1000.0mm; Underwater concrete is with C30 and above pea gravel concreten, and cobble-stone diameter 5.0～20.0mm also can adopt mortar, can mix an amount of early strength admixture in concrete or mortar.

Claims

1, a kind of steel pipe pile basis of planting steel stick construction is characterized in that it is partly to be connected and fixed with rod iron in the basement rock, and the outer rod iron of basement rock is located in the steel pipe, and steel pipe and at least one rod iron connect into integrally formed steel pipe pile basis.

2, planting steel stick is built the steel pipe pile basis according to claim 1, it is characterized in that the steel pipe and the bedrock surface on described steel pipe pile basis connects into integral body by underwater concrete.

3, planting steel stick is built the steel pipe pile basis according to claim 1, it is characterized in that pouring underwater concrete connects into integral body with steel pipe and rod iron in the steel pipe.

4, planting steel stick is built the steel pipe pile basis according to claim 1, it is characterized in that offering core-drawing hole on basement rock, and the aperture of loosing core is inserted in rod iron in the hole greater than the rod iron diameter, and the aperture of loosing core is less than pipe diameter.

5, build the steel pipe pile basis as arbitrary planting steel stick as described in claim 1 or 2 or 3 or 4, it is characterized in that pouring underwater concrete is in steel pipe bottom and core-drawing hole.