RU207340U1 - Sheet pile wall element - Google Patents

Abstract

The utility model relates to the field of construction, namely to building elements used in the development of pits in water-saturated soils, including in dense urban areas. EFFECT: provision of watertightness of interlocking joints of sheet pile walls before mechanical excavation of soil from a foundation pit for the construction of a foundation or underground parking of buildings and structures under construction. The sheet pile wall element includes a trough-shaped sheet pile having a wall (1) flat along its entire width, connected to the shelves (2, 3) with the formation of concave corners, which are located symmetrically relative to the plane perpendicular to the wall (1), the elements of the lock connection (4, 5 ), located at the ends of the shelves (2, 3), overhead elements of two steel corners (6, 7) with a blind tip at the bottom, rigidly connected to the shelves (2, 3) along the elements of the lock connections (4, 5). Each steel corner (6, 7) is made with alternating transverse through slotted holes along the corner in the corner part and at the joints with the shelves (2, 3) from the side of the lock connection elements (4, 5) at a distance of at least 1.5 m from the top edge of the corner. Steel corners (6, 7) are intended for insertion of injection system tubes (8, 9) into their cavity up to the level of blind tips. 3 ill.

Description

The utility model relates to the field of construction, namely to building elements used in the development of pits in water-saturated soils, including in dense urban areas.

Known sheet pile of the Larsen type, which is a metal profile with rounded edges of the side walls or locks (Kalinin AL, Kalinina A. V. Larsen sheet pile. Comparative characteristics of domestic and foreign manufacturers. Metals and prices, No. 16 (147), 2007 .).

The closest to the claimed utility model is an element of the Larsen-type sheet pile wall, including a wall made flat across its entire width, and adjacent side shelves with the formation of concave corners between them and located symmetrically relative to a plane perpendicular to the wall with locks at the free ends, the wall above concave corners contains shoulders and a lift angle (RU 2740561, E02D 5/04, 01/15/2021).

Larsen tongue-and-groove joints have the following disadvantages:

insufficient tightness from filtration of ground water in the locks;

negative violation of the existing structure of moisture-saturated soil behind the outer contour of the sheet pile wall;

significant costs for organizing and carrying out active drainage in the process of mechanical soil development with deepening of the pit to the design level;

significant costs for additional engineering measures aimed at strengthening the foundations and foundations of adjacent buildings and structures.

The task of the utility model is to ensure watertightness of the interlocking joints of sheet pile walls before mechanical excavation of soil from a foundation pit for the construction of a foundation or underground parking of buildings and structures under construction.

The technical result is achieved by the fact that a sheet pile wall element, including a trough-shaped sheet pile, having a flat wall along its entire width, two shelves connected to it with the formation of concave corners and located symmetrically relative to a plane perpendicular to the wall, locking connection elements located at the ends of both shelves, contains overhead elements of two steel corners with a blind tip at the bottom, rigidly connected to the corresponding shelves along the lock connections, with alternating transverse through slotted holes in two rows: in the corner part and at the joints with the shelf from the side of the lock connection elements at a distance of at least 1 , 5 m from the upper edge of the corner, steel corners are designed to insert the injection system tubes into their cavity up to the level of blind tips.

The utility model is illustrated by drawings, where in FIG. 1 shows the profile of a sheet pile wall element, FIG. 2 shows a general view of a sheet pile wall element; FIG. 3 shows an example of lining up a sheet pile wall of trough-shaped sheet piles alternating with steel corners and without corners.

The sheet pile wall element includes a trough-shaped sheet pile having a wall 1 flat along its entire width (Figs. 1, 2), connected to the shelves 2, 3 with the formation of concave corners, which are located symmetrically relative to the plane perpendicular to the wall 1, the elements of the lock connection 4, 5 located at the ends of the shelves 2, 3, overhead elements of two steel corners 6, 7 with a blind tip at the bottom, rigidly connected to the shelves 2, 3 along the elements of the lock connections 4, 5. Each steel corner 6, 7 is made with alternating transverse through slotted holes along the corner in the corner part and at the junctions with the shelves 2, 3 from the side of the locking connection elements 4, 5 at a distance of at least 1.5 m from the upper edge of the corner (Fig. 2). Steel corners 6, 7 are intended for introduction into their cavity of pipes of injection systems 8, 9 to the level of blind tips.

A trough-shaped sheet pile with steel corners 6, 7 and pipes of injection systems 8, 9 placed in their cavities is immersed into the ground to the design depth, then a trough-shaped sheet pile is immersed without steel corners, water is injected through the pipes of injection systems 8, 9 under a pressure of 2-3 atm ., and then injection under high pressure of the resin rapidly expanding in the watered soil. As a result of the injection of resin through the pipes of injection systems 8, 9, the water-saturated soil along the castle joint of two trough-shaped grooves turns into a thick waterproof mass that prevents the filtration of ground water inside the pit.

Compared to the prototype, this element of the sheet pile wall makes it possible to reliably seal the vertical tool joints of the sheet pile before the start of excavation in the pit, to minimize the costs of drainage and to carry out engineering measures in order to preserve adjacent buildings and structures.

Claims (1)

A sheet pile wall element, including a trough-shaped sheet pile, having a flat wall along its entire width, two shelves connected to it with the formation of concave corners and located symmetrically with respect to a plane perpendicular to the wall, locking connection elements located at the ends of both shelves, characterized in that it contains overhead elements of two steel corners with a blind tip at the bottom, rigidly connected to the corresponding shelves along the locking joints, with alternating transverse through slotted holes in two rows: in the corner part and at the joints with the shelf from the side of the locking element at a distance of at least 1.5 m from the upper edge of the corner, steel corners are designed to introduce injection system tubes into their cavity to the level of blind tips.

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