RU2275456C2 - Sheet piling - Google Patents

Abstract

FIELD: industrial and civil building, particularly to erect retaining and wharfage walls in ground.

SUBSTANCE: sheet piling comprises pile row driven in ground and connected one to another by locks, as well as land ties, metal distribution belt to connect land ties to wall and anchor ground protective panel. Distribution belt is composite and comprises anchor fastening units for land ties fastening located in the piles. Anchor unit is formed in each pile and made as tubular metal frame fixedly secured to each pile and as composite embedded support secured to frame and pile. Embedded support may be installed in front pile part (from water area side) or in rear pile part (from shore side). When embedded support is arranged in front pile part the embedded support is made as traverse and two guiding metal beams forming T-shaped figure in plane. When embedded support is arranged in rear pile part the embedded support is made as figured T-shaped box-like holder. Pile with anchor unit arranged inside the pile is at least partly concreted.

EFFECT: increased strength and stability of sheet piling, increased protection against corrosion and mechanical damage.

7 cl, 6 dwg

Description

The invention relates to the construction of predominantly hydraulic structures and can be used in the construction of berths and retaining walls on soils that allow driving of dowels and piles, as well as retaining walls in industrial and civil engineering.

Known sheet pile wall containing piles hammered in a row, interconnected by means of locks made in a certain way and located on the neutral axis of the wall [1].

A disadvantage of the known design in low bearing capacity due to poor perception of loads both lateral and perpendicular to the plane of the wall.

Known sheet pile wall made of piles driven in a row, interconnected by means of locks and additionally containing an anchor rod connecting the wall through a metal distribution belt with an anchor soil protection plate [2].

This embodiment of the tongue-and-groove wall allows to increase its rigidity and thereby the bearing capacity, reduce the metal consumption of the wall, reduce the complexity of its construction.

However, the installation of anchor rods is difficult, because their placement requires the formation and installation of a massive distribution belt in the form of plates or beams on the wall, holes for inserting the anchor heads into the wall, which reduces its stability, and the location of the distribution belts on the outer surface of the wall (in water ) causes their corrosion, which reduces the period of operation of the structure.

The objective of the invention is to simplify the installation of anchor rods, as well as improving the efficiency of strengthening the sheet pile wall.

The problem is solved by a sheet pile wall, including piles stacked in a row, interconnected by means of locks, anchor rods, a metal distribution belt for attaching them to the wall and an anchor soil protection plate. In such a wall, according to the proposal, the distribution belt is made of typesetted from anchor fastening nodes of anchor rods placed inside the piles, while the anchor node is mounted inside each pile and made in the form of a tubular metal frame placed coaxially in the pile and rigidly connected to it and a prefabricated embedded support mounted on the frame and pile.

In the sheet pile wall, the mortgage support can be installed in the front of the pile (from the water area) or in the back of the pile (from the shore).

The mortgage support is made in the form of a pile installed in the front part of the pile, placed inside the frame and welded with sidewalls to it, a cross member and two guide metal beams installed horizontally by a cross member and a window in the pile, rigidly interconnected by a spacer, with the cross member and the pile being stiffeners, and with anchor rod - anchoring elements.

The frame with this design of the anchor assembly further comprises a reinforcing mesh-bottom and mesh-cover.

The pile with the anchor attachment unit of the anchor rod installed inside it in the front part is concreted to the top.

The embedded support of the anchor unit is made in the form of a pile box mounted horizontally between the frame and the frame, in its window, a curved box-shaped bracket, T-shaped in plan, having a passage for the anchor rod fixed in the frame window through the bracket channel and coaxial window in a pile.

In this embodiment, the frame of the anchor attachment unit for the anchor rod is mounted in a pile by means of longitudinal stiffeners evenly distributed around the circumference.

Such a frame is additionally equipped with a lid, and the space between it and the pile, stiffeners and the embedded support (in its back) are concreted.

Reducing the complexity and timing of installation work on the installation of anchor rods, strengthening the sheet pile wall, ensuring its reliability and durability are guaranteed by making the distribution belt type-setting, placing the anchor fasteners forming it inside each pile, at the design elevations, and creating tight connections with the pile, making it possible if necessary, adjust the tension of the anchor rods in one or another part of the sheet pile wall of the structure, hydraulic or construction, i.e. vary its bearing capacity.

The installation of the anchor fastening unit inside each pile, its concreting provides an increase in the strength and stability of the tongue and groove wall, helps to protect the reinforcing elements of the fastener from corrosion and from mechanical damage, and avoids the appearance of cracks.

The use of an additional mesh in the frame of the anchor attachment unit for the anchor rod allows you to improve the quality of the connection of the layers of covering concrete, providing a protective coating for the anchor node.

The use of an additional cover tightly connected to the frame allows you to protect the internal cavity of the frame from the ingress of concrete and other materials, which makes it possible to adjust the tension state of the sheet pile wall if necessary.

It should be noted that the use of constructions of anchor assemblies forming a distribution belt mounted either on the front of the wall or on the back is determined by the place of its installation, operating conditions and technological capabilities of installation work, the volume of which is minimal during the construction of the proposed wall. At the same time, the use of prefabricated anchor units installed inside the piles and rigidly connected to it as reinforcing elements of the distribution belt eliminates mechanical damage to both the wall itself and the mooring vessels (the protruding distribution belt), and if defects arise, they can be quickly eliminated disrupting the operation of the entire structure.

The invention is illustrated by the following drawings. Figure 1 shows a schematic sheet pile wall, General view; figure 2 - placement of the distribution belt in the front of the wall (piles), section; figure 3 is the same (figure 2), a view in plan; figure 4 is the same side view; figure 5 - placement of the distribution belt in the rear of the wall (piles), the cross section; figure 6 is the same (figure 4), a longitudinal section.

A tongue-and-groove wall made of piles 1 stacked in a row, interconnected by means of locks 2, includes anchor rods 3 and a metal distribution belt 4 for fastening the anchor rods 3 to the wall respectively forming piles 1 and anchor soil protection plate 5 (or shield) located along the construction (hydraulic or construction).

The distribution belt 4 is placed inside the piles 1 and is made inlaid from anchor assemblies 6 to the wall - piles 1 of the anchor rods 3.

Anchor unit 6 is a coaxially placed tubular metal frame 7 in each pile 1 and rigidly connected to it and a mortgage support 8 mounted on the frame 7 and pile 1.

The embedded support 8 can be installed in the front of the pile (from the water area) or in the back of the pile (from the shore).

The embedded support 8, installed in the front part of the pile, is made by the national team in the form of a cross member 9 located inside the frame 7, welded by the sidewalls to the frame 7, and two guide metal beams 10, forming a T-shape in plan. The beams 10 are installed by means of a window (not shown) in the cross member 9 and the window 11 in the pile horizontally, interconnected by a spacer 12, and with the cross member and the pile by stiffeners 13, 14, respectively. Anchor rods 3 are fixed to the beams 10 by means of anchoring elements, for example studs (not shown). It is advisable to perform the width of the cross member equal to the radius of the pile, and its height to choose from a ratio of 1.2-1.5 widths. This embodiment of the cross member will allow correspondingly the required lengths of the guide beams 10, the optimal length and distance between which (the length of the spacer) are determined by calculation.

The frame 7, when performing the anchor assembly 6 with the embedded part 8 installed in the front of the pile 1, is additionally equipped with a reinforcing mesh-bottom 15 and a mesh-cover 16. The piles 1 are concreted to the top, which ensures a rigid connection of the reinforcing components of the distribution belt 4 with piles. The securing of the second ends of the anchor rods 3 is carried out for the anchor soil protection plate 5 installed along the structure. The mark of the anchor tie fixing point to the wall - piles 1 and plate 5 is determined by calculation based on the conditions for ensuring the strength and stability of the structure. As anchor rods 3 used metal cables or ropes that withstand the estimated breaking load. The tension of the anchor rods 3 is carried out using tensioning devices (not shown) installed on the anchor soil protection plate 5.

The embedded support 8 installed in the rear of the pile is made by the national team in the form of a horizontal box-shaped bracket 18, horizontally placed between the pile 1 and the frame 7, in its window 17, the sole welded to the frame 7. The bracket has a passage channel 19 for placing the anchor rod fixed (by the head) to the sole of the bracket 18 through the window 17 of the frame 7 and passed through the window 20 in the pile and the channel 19 in the bracket. With this use of the embedded support 8, the frame 7 is mounted in the pile 1 using longitudinal stiffening ribs 21, uniformly distributed around the circumference of the pile body, for example three ribs. The frame 7 is additionally equipped with a lid 22 tightly connected with it, protecting the cavity of the frame 7 from concrete and foreign bodies. The cavity between the pile and the frame is concreted, which provides a rigid connection of the elements of the anchor node with the pile, improving the quality of fixation of prefabricated nodes.

To install the anchor rod and the elements of the distribution belt - the anchor attachment site, the piles 1 are made in tiers of windows 11, 20 and, in addition, assembly 23, which are closed after completion of work.

Installation of the tongue and groove wall with a stacked distribution belt of prefabricated anchor units placed inside the piles from their front side is carried out in the following sequence.

After the pile is immersed to a predetermined depth, it is filled or filled with concrete to the installation level of the anchor unit 6 for fixing the anchor rods 3. The mounting window 23 and the window 11, 20 are cut in the pile for winding of the guide beams welded by means of the spacer 12. The reinforcing mesh bottom is installed. 15 and installation in place of the cross member 9. Welded guide beams are screwed into the window 11 in the pile and the window in the cross member (not shown) and welded with the cross member. To ensure the reliability of the piles, the hole between the guide beams is welded with overlays (not indicated) and additional stiffeners 13, 14 are installed.

After that, a reinforcing mesh-cover 16 is placed on the frame and the pile is completely filled with concrete.

When installing the anchor node 6 with the embedded support 8, located in the rear of the pile 1, installation work is carried out as follows. The bracket 18 is welded to the frame 7 in its window 17. For reliable fastening of the frame 7 in the pile 1, stiffeners 21 are welded to it. To protect the cavity of the frame 7 from the ingress of concrete and debris, a cover 22 is installed on top of it. After the pile is immersed, it is backfilled to marks of the location level of the bottom of the anchor unit 6 of the tie rod 3. At the calculated mark of the attachment of the tie rod, a rectangular window 20 is cut in the pile from the shore. The pre-welded frame 7 with the embedded support 8 is lowered into the pile until the window 20 in the pile coincides with the hole in the bottom of the bracket 18, after which it is fixed in place. The space between the frame 7 and the pile 1 is filled with concrete.

This implementation of installation work reduces the complexity and timing of their implementation, improving the quality and reliability of the structure.

The proposed implementation of the sheet pile wall provides an increase or restoration of its strength and stability due to the joint work of all anchor devices. During the operation of the structure (depending on the period), additional tension of the anchor rods is possible, their monitoring and elimination of defects.

INFORMATION SOURCES

1. RF patent No.2010085, s. 01/09/1992, op. 03/30/1994, cl. E 02 B 3/06, “Sheet pile wall” (analogue).

2. RF patent No. 2176006, s. 12/07/1999, op. 11/20/2001, class E 02 In 1/00; E 02 B 3/06, “Method for strengthening berthing structures” (having an anchor front wall of sheet piles), (analog).

3. RF patent No. 2180028, s. 02/15/2000, op. 02/27/2002, class E 02 In 1/00; E 02 B 3/06, "Method for the reconstruction of berthing facilities" (including the anchor front wall of reinforced concrete piles), (prototype).

Claims (7)

1. A tongue-and-groove wall, including piles stacked in a row, interconnected by means of locks, anchor rods, a metal distribution belt for fastening them to the wall and an anchor soil protection plate, characterized in that the distribution belt is made up of anchor rods mounted inside the piles of anchor rods wherein the anchor unit is mounted in each pile, made in the form of a coaxially placed and rigidly connected tubular metal frame and a prefabricated embedded support fixed to the frame and pile. 2. The tongue-and-groove wall according to claim 1, characterized in that the mortar support is made in the form of a pile installed in the front of the pile, placed inside the frame and welded to it by the sides of the cross member and two guide metal beams installed horizontally rigidly connected by the cross member and the window in the pile between each other with a spacer, with a cross-member and a pile - stiffeners, and with an anchor rod - anchoring elements. 3. The tongue wall according to claim 1 or 2, characterized in that the frame further comprises a reinforcing mesh-bottom and mesh-cover. 4. The tongue-and-groove wall according to claim 1 or 3, characterized in that the pile with the anchor attachment unit of the anchor rod mounted inside the front part thereof is concreted to the top. 5. The tongue-and-groove wall according to claim 1, characterized in that the mortgage support is made in the form of a pile installed horizontally between the frame and the frame in its rear part, in its window, a shaped T-shaped box-shaped bracket in the plan view, the sole welded to the frame and having a guide passage channel for anchor traction fixed in said frame window through a channel in the bracket and a window in the pile. 6. The tongue wall according to claim 5, characterized in that the frame is mounted in a pile by means of longitudinal stiffeners evenly distributed around the circumference. 7. The tongue wall according to claim 5 or 6, characterized in that the frame is additionally provided with a lid, and the space between it and the pile and the embedded support are concreted.

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