RU56416U1 - BOARD WALL IN SOIL - Google Patents

Abstract

The utility model relates to the field of construction and can be used as a boundary wall near existing buildings and structures in weak water-saturated sandy clay soils with quick-moving properties. The design of the enclosing wall in the ground includes an array of vertical elements and the connections between them in the form of a reinforced concrete wall. The vertical elements are arranged in one row and are made in the form of I-beams, the length of the ties between the vertical elements is 1000-1500 mm, and the width of the ties is 100-150 mm. The use of standard profiles of I-beams as vertical elements can significantly simplify the technology and reduce the cost of erecting a wall. The implementation of the width of the concrete wall 100-150 mm also reduces the cost of the construction of the enclosing wall due to the saving of concrete, and the step between the I-beams in the amount of 1000-1500 mm allows you to provide the necessary stability of the wall.

Description

The utility model relates to the field of construction and can be used as a boundary wall near existing buildings and structures in weak water-saturated sandy clay soils with quick-moving properties.

In the cramped conditions of urban development, the construction of any new facilities is difficult. The foundations and foundations of buildings and structures located in close proximity to the newly constructed facility are subject to deformation and destruction, therefore, the creation of reliable enclosing walls is required.

Known wall in the ground, built by the method of bisected piles, which consists of two groups of concrete piles. The first group is reinforced with a frame, and the piles are spaced from each other at a distance less than their own diameter. The second group of concrete piles of the same diameter is located with overlap between the piles of the first group (see patent RU 2148123, claimed September 15, 1998, published April 27, 2000).

A disadvantage of the known wall in the ground is that due to insufficient stiffness and bearing capacity of the wall, there is the possibility of subsidence of the ground, which leads to deformation and destruction of foundations and foundations. The weaker the water-saturated soil under the base of the structure, the greater the likelihood of a negative impact on the foundations and foundations of buildings and structures located in the immediate vicinity of the facility under construction. In addition, when drilling to great depths, the drill deviates from its vertical position, resulting in areas that are not filled with concrete appear in the enclosing wall.

The closest technical solution is a wall in the ground, including an array of two rows of vertical

elements and connections between them. Moreover, the vertical elements are made in the form of secant soil-cement piles constructed using inkjet technology, and the connections are a reinforced concrete wall 600 mm wide (see patent RU 2204656, filed December 13, 2001, published May 20, 2003).

The disadvantage of this enclosing wall in the soil is the high cost and material consumption of the structure, since the construction of secant soil-cement piles requires the use of expensive equipment, significant consumption of concrete for the construction of a concrete wall, and the process itself is time-consuming and time-consuming.

The objective of the utility model is to reduce the cost and simplify the design of the enclosing wall with sufficient stability for erection in weak water-saturated sandy-clay soils.

A wall design in the ground is proposed, including an array of vertical elements and the connections between them in the form of a reinforced concrete wall. The vertical elements are arranged in one row and are made in the form of I-beams, the length of the ties between the vertical elements is 1000-1500 mm, and the width of the ties is 100-150 mm.

The proposed enclosing wall in the ground allows to simplify and reduce the cost of its design due to the use of I-beams as vertical elements and optimization of the size of the bonds between the vertical elements.

Figure 1 presents a fragment of the enclosing wall in plan,

figure 2 is a General view of the enclosing wall.

The wall in the ground contains one row of I-beams 1 located in the wells 2 with a pitch of 1000-1500 mm. Between

I-beams made connections 3 in the form of a concrete wall with a width of 100-150 mm, reinforced with a metal frame 4.

The boundary wall in the soil of the claimed design is erected as follows.

Wells 2 are drilled along the fixed axes in increments of 1000-1500 mm to a design depth of 10-20 m, followed by filling with a clay solution. In the well 2, the I-beam 1 is lowered to the design elevation with crushing. Then, narrow gaps are cut from the corner of the pit or from the middle of the pit wall between the beams 1 after one interval. A reinforcing cage 4 is installed in the gap for the entire length and depth. Next, an injector is lowered along the I-beam 2 and fine-grained concrete is pumped, which displaces the clay solution until it is completely replaced. 2-3 days after the concrete acquires strength, the same operations are carried out in the remaining intervals. If necessary, set strapping belts with expansion beams or with anchor piles.

The use of I-beams of standard profile as vertical elements, as well as their arrangement in one row, can significantly simplify the design of the enclosing wall and reduce the cost of its construction. In this case, the beam of the I-beam profile performs the function of a locking element during the construction of a reinforced concrete wall. The implementation of the width of the concrete wall 100-150 mm prevents excessive shedding of the walls of the gap in weak sandy clay soils and reduces the cost of the construction of the enclosing wall due to the saving of concrete. The distance between the I-beams in the amount of 1000-1500 mm is selected taking into account the forces acting in weak water-saturated soils on the enclosing wall from nearby buildings and structures, so as to ensure the stability of the enclosing wall.

Claims (2)

1. The enclosing wall in the ground, including an array of vertical elements and connections between them in the form of a reinforced concrete wall, characterized in that the vertical elements are arranged in a row and made in the form of I-beams, and the width of the connections between vertical elements is 100-150 mm . 2. The enclosing wall according to claim 1, characterized in that the length of the bonds between the vertical elements is 1000-1500 mm.