CN105464121A - Cement grouting sheet pile with reinforcing ribs - Google Patents

Abstract

A cement grouting sheet pile with reinforcement ribs comprises a plate-shaped pile body, connecting hooks are arranged on both sides of the pile body along the length direction, a grouting through hole is opened in the height direction of the pile body, a plurality of grouting through holes are evenly distributed along the length direction of the pile body, and a thickening layer is arranged around the grouting through hole; a plurality of side outlets are opened in the side wall of the grouting through hole along the height direction; a sealing ring is arranged at the top of the grouting through hole, and the sealing ring comprises a fixing area at the bottom and a grouting area at the top, the outer wall surface of the fixing area is fixed on the inner wall surface of the grouting through hole, and a grouting port is opened on the side of the grouting area; and reinforcement ribs are arranged in the width direction of the pile body. The mortar flows out from the side outlet and contacts and mixes with the surrounding soil, and the pile body and the surrounding soil are condensed into one, so as to form a sheet pile support structure with higher rigidity.

Description

A cement grouted sheet pile with reinforcing ribs

technical field

The invention relates to a cement grouting sheet pile with reinforcing ribs.

Background technique

In hydraulic structures, municipal civil construction and other projects, in order to prevent water and soil from entering the building construction site, it is necessary to build a zero-time cofferdam structure before construction to form a foundation pit for drainage in the cofferdam and construction of buildings. things. Currently commonly used cofferdam structures include soil cofferdam structure, bagged soil cofferdam structure, bagged sand cofferdam structure and double-row steel sheet pile frame cofferdam structure, among which the steel sheet pile cofferdam structure has good bending performance And the characteristics of light weight can be widely used in deep foundation pit excavation and deep water bridge foundation construction.

The Chinese patent with publication number CN202359565U discloses a steel sheet pile cofferdam structure. The structure is composed of steel sheet piles and the cofferdam body. The steel sheet piles are in a single row and are installed on the water side of the cofferdam body; the cofferdam body is filled with earth-rock structures; On the foundation soil, the interlocks of adjacent steel sheet piles are engaged with each other.

The Chinese patent with publication number CN201428137Y discloses a waterproof sheet pile cofferdam. The structure is equipped with a plurality of clustered steel pipe piles, and the adjacent two clustered pipes are connected by a steel plate enclosure. Each clustered steel sheet pile is welded by at least two steel pipes as a long pile of the cofferdam, and each steel pipe is opened There is a gap that runs through the length of the steel pipe. The left and right sides of the steel plate fence are respectively inserted into the corresponding gaps of a steel pipe in two adjacent clusters of steel pipe piles as short piles for the cofferdam. As the limit block for the width of the gap, the steel pipes of the bundled steel pipe piles are provided with waterproof filler bentonite.

The Chinese patent with the publication number CN204151804U discloses a steel sheet pile cofferdam structure, which includes a plurality of steel sheet piles arranged around the foundation pit, and outer positioning steel pipe piles are arranged outside the steel sheet pile cofferdam formed by the steel sheet piles. The outer end of the plane positioning structure is fixedly connected to the upper part of the outer positioning steel pipe pile, and the other end is set against the steel sheet pile along the horizontal direction. The inner positioning steel pipe pile is installed inside the steel sheet pile cofferdam, and the upper purlin is fixedly connected to the inner positioning steel pipe pile. In the upper part between the pile and the steel sheet pile cofferdam, the upper purlin is fixedly connected with multiple upper steel inner braces, four corbels are welded on the upper part of each steel casing, and the lower precast concrete inner bracing is erected on the corbels, and the lower layer Each end of the precast concrete inner brace is fixedly connected with the lower purlin, and the lower purlin is fixed on the inner wall of the steel sheet pile cofferdam, and the lower precast concrete inner brace at the steel casing is fully covered with precast concrete slabs.

However, in actual engineering, water leakage and water seepage often occur in the traditional steel sheet piles as mentioned above, the main reason being that the old steel sheets have not been rectified or the pile body is corroded. Moreover, the fusion degree of the traditional steel sheet pile cofferdam structure and the surrounding soil is poor, and the resistance to the surrounding soil is weak.

Contents of the invention

In order to overcome the above problems, the present invention provides a cement grouting sheet pile with reinforcing ribs.

The technical scheme adopted in the present invention is:

A cement grouting sheet pile with reinforcing ribs, comprising a plate-shaped pile body, the two sides of the pile body along the length direction are provided with connecting hooks, the pile body is provided with grouting through holes along the height direction, and several grouting holes The through holes are evenly distributed along the length direction of the pile body, and a thickened layer is arranged around the grouting through hole; the side wall of the grouting through hole has several side outlets along the height direction; the top opening of the grouting through hole A sealing ring is provided at the bottom, and the sealing ring includes a bottom fixing area and an upper grouting area, the outer wall of the fixing area is fixed on the inner wall of the grouting through hole, and the side of the grouting area has a grouting opening.

The pile body is provided with reinforcing ribs along the width direction.

Further, the grouting area is in the shape of a trapezoidal cone, and the fixing area is in the shape of a ring.

Further, four grouting openings are equidistantly arranged on the side of the grouting area.

The beneficial effects of the present invention are reflected in:

(1) The side wall of the grouting through hole has several side outlets along the height direction; the mortar flows out from the side outlets and contacts and mixes with the surrounding soil. When the cement in the mortar hardens, the pile body and the surrounding soil are condensed into one, A sheet pile support structure with higher stiffness is formed, which can effectively resist soil pressure.

(2) The present invention adopts plastic material, which can effectively avoid corrosion problems during use, and has low cost and economical savings.

Description of drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic diagram of cooperation between the sealing ring and the grouting through hole.

detailed description

Referring to the accompanying drawings, a cement grouting sheet pile with reinforcing ribs includes a plate-shaped pile body 1, and the two sides of the pile body 1 along the length direction are provided with connecting hooks 2, and the pile body 1 is opened along the height direction. There are grouting through holes 3, and several grouting through holes are evenly distributed along the length direction of the pile body, and a thickening layer 5 is arranged around the grouting through holes 3; A side outlet 31; the top opening of the grouting through hole 3 is provided with a sealing ring 4, the sealing ring 4 includes a fixed area 41 at the bottom and a grouting area 42 at the top, and the outer wall of the fixed area 41 is fixed on the grouting On the inner wall surface of the through hole 3 , a grouting port is opened on the side of the grouting area 42 .

The pile body 1 is provided with reinforcing ribs 6 along the width direction.

An annular groove 411 is formed on the outer wall of the fixing area, and a raised ring is correspondingly provided on the inner wall of the grouting through hole 3, and the sealing ring 4 is fixed on the inner wall through the cooperation between the annular groove 411 and the raised ring Grout in the through hole 3.

The grouting area 42 is in the shape of a trapezoidal cone, and the fixing area 41 is in the shape of a ring.

Four grouting openings are arranged at equal intervals on the side of the grouting area 42 .

The pile body 1 of the present invention is made of plastic material, and the sealing ring 4 is made of rubber material.

Since the pile body 1 is long and easily deformed, the pile body 1 is provided with reinforcing ribs 6 along the width direction to strengthen the strength of the pile body 1 .

Generally speaking, each project needs to use multiple pieces of the present invention, and two adjacent pieces of the present invention are connected to each other by the connecting hooks 2 on both sides of the pile body.

Construction steps of the present invention are as follows:

The first step: according to engineering geological conditions, determine the size of the present invention;

Step 2: before piling, two theodolites are used to monitor horizontally and vertically, so as to control the verticality of the pile body 1 . The installation position and direction of the first two pieces of the present invention should be particularly accurate, so as to play a guiding role in the installation of the subsequent pile body 1, and the pile body 1 needs to be measured every time it is driven into the ground for 1m, and it should be bound with steel bars immediately after driving to a predetermined depth Two adjacent pieces of the present invention are used for temporary fixation.

Step 3: When driving the pile, use the single driving method, that is, start from one end of the pile body 1 and drive into the other end step by step until the end of the project. After the piling is finished, the grouting pipe is connected to the grouting port on the sealing ring 4, and the grouting pipe is poured into the grouting through hole 3 through the grouting port. The mortar starts to leak from the bottom outlet of the grouting through hole 3. As the mortar increases, the mortar will flow out from the side outlet 31 and mix with the surrounding soil. When the cement in the mortar hardens, the pile body 1 and the surrounding soil will condense Integrate to form a sheet pile support structure with a certain rigidity, which can resist soil pressure. Finally, pull out the sealing ring 4.

The content described in the embodiment of this specification is only an example of the implementation form of the inventive concept, and the protection scope of the present invention should not be regarded as limited to the specific form stated in the embodiment. Equivalent technical means that a person can think of based on the concept of the present invention.

Claims (3)

1. the cement injection sheet pile with reinforcing rib, comprise tabular pile body, described pile body both sides are along its length provided with butt hook, described pile body has grouting through hole along short transverse, several grouting through holes are uniformly distributed along the length direction of pile body, it is characterized in that: the surrounding of described grouting through hole is provided with thickening layer; The sidewall of described grouting through hole has several side outlets along short transverse; The mouth place, top of described grouting through hole is provided with sealing ring, and described sealing ring comprises the fixed area of bottom and the grout compartment on top, and the outside wall surface of fixed area is fixed on the internal face of described grouting through hole, and the side of grout compartment has grouting mouth;

Described pile body is provided with reinforcing rib in the width direction.

2. a kind of cement injection sheet pile with reinforcing rib as claimed in claim 1, is characterized in that: described grout compartment is trapezoidal Rotary-table shape, and described fixed area is circular.

3. a kind of cement injection sheet pile with reinforcing rib as claimed in claim 2, is characterized in that: the side of described grout compartment is equidistantly provided with 4 grouting mouths.