SU749977A1 - Method of erecting prefabricated ferroconcrete multilevel wall in earth - Google Patents

Description

(54) METHOD OF CONSTRUCTION OF PREFABRICATED CONCRETE MULTIPLE WALL IN GROUND

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The invention relates to the construction, namely the erection of walls of pumping stations buried in the ground, water intakes, car garages and car parks, underground floors and basements of industrial and civil buildings and structures, car dumpers, crushing ore buildings and other objects more than 12-15 m deep.

There is a known method of erecting many fair-haired, so-called “Paris walls,” which means that on the axis of the wall, at a certain distance from each other, using a hardening clay-cement sand solution, wells are made into which prefabricated elements are mounted in the form of piles. Then, the soil is excavated in the excavation area by growing from top to bottom, 1 using pile elements as pillars, a wall of the building was built on the floor.

The disadvantage of this method is that it can be carried out only in stable, low-watered soils.

The closest technical solution to this invention is a method of erecting a precast reinforced concrete high-density wall in the ground, including the development of a continuous trench under the protection of a clay slurry, the installation of wall panels in it, supported by each other up to the design height of the wall using rails between rows panels, filling of the sinuses between the walls of the trench and panels, excavation from the inside of the structure with embedment of the joints (2J.

The disadvantage of this method is that 4TQ for its implementation requires particularly precise installation of vertical guides in the trench. In addition, the quality of joints between wall panels is not guaranteed.

The purpose of the invention is to increase the accuracy of assembling the multi-colored walls in the ground and to simplify the production process for the construction of walls with a depth of more than 12-15 m.

The goal is achieved by the fact that in the well-known method of erecting a precast concrete multi-layer wall in the ground, including the development of a continuous trench 20 under the protection of a clay suspension, element-by-layer installation of wall panels in it with each other up to the design height of the wall using guides between r damy panels zabutovku

the sinuses between the walls of the trench and the panels, the excavation from the inside of the structure with embedment of the joints, the wall panel of the lower rus of all subsequent rows are installed in the trench simultaneously with the graph plate, which is for panels of all the overlying subsequent rus and all panels of the adjacent row, and each wall panel The bottom row of the first row is installed in the design position with two nanowires located to the right and left of the panel, all guides being removed from the trench after filling the sinuses between the walls of the trench and the panels.

FIG. 1-4 depict the technological sequence of operations during installation; in fig. 5 — node T FIG. 3; in fig. b - section A-A in FIG. J; in fig. 7 is a section BB in FIG. four; in fig. 8 - structures of horizontal joints of flat panels; in fig. 9 and 10 - horizontal knock structure of ribbed panels.

A special earth moving mechanism (not shown) opens the trench, the vertical sides of which are held by a thixotropic clay slurry 2.

First, mount the bottom 3 panel of the first row of the first row. In the grooves on the right and left side of the panel 3, formed by the top 4 and bottom 5 pairs of latches, guide 6 is inserted in the form of an I-beam. In order to fix the guides when translating the panels into a vertical position, the lower latches of the mounted panel are made in the form of a box with bottom 7 on which the guides rest.

Panels 8 of the second and subsequent Russes of the first row are assembled into a trench with and using guides 6 and clamps 4 and 5.

After finishing the installation of the panels 8 of the first row at the design height, proceed to the installation of the panels 9 of the second row. To do this, insert the front 10 into the locks of the front face (in the direction of mounting) of the lower tier of the second row of the second row. The panel 9 with the guide 10 is mounted using its clamps on the rear (in the direction of mounting) of the face of the panel and the mounted guide b Yes, the panels .3, and 8. The panels 11 of the second and subsequent second rows are mounted using the guides 6 and 10, after which the assembly cycle is repeated.

All nanometers are equipped with limiters 12 mounted on the surface of the panels.

After the required number of rows of panels have been mounted, the sinuses are filled between the trench wall and the panels. At the same time, the sinus facing inside the structure is filled with sand 13, 3, the outer one — hardening, for example, with clay-clay sand solution 14.

749977

Immediately after laying the packing material, the lines are removed from the trenches. After curing the wall over the entire perimeter of the structure

develop the ground in the space enclosed by the walls of the structure.

The method can be implemented for walls mounted on flat or ribbed wall panels.

Horizontal joints 15 walls; mounted from flat panels, are wedge-shaped and have shoulders 16 serving to support the panels. The working valve 17 of the panels is led out into the cavity 18 of the joint and connected to the embedded parts 19, filled in the form of a metal strip, laid along the joint. The strips of two adjacent joints when joining the joints are interconnected using electric welding plates 20.

In order to ensure the stability of flat wall panels when mounted on the lower edge of the upper russian panels, pin 21 (usually 2 pins on the jrael) is installed, and cylindrical cavities 22 are arranged in the upper edge of the lower panel,

 which includes pins 21.

The joint cavity 18 is concreted simultaneously with the installation of reference plate 23 after welding the joint reinforcement.

In order to ensure the stability of the ribbed wall panels when excavating from inside the building, the longitudinal ribs

24 panels protrude beyond the upper end of the .25 panel, and from the bottom end 26 of the rib panel 27 by the same amount (20

25cm) not income t to the bottom of the joined panels.

The joining of ribbed panels is carried out in the same way as flat panels, and the joining of edges is carried out as they join columns in multi-storey industrial buildings.

After welding reinforcement ribs and panels

The support is sewed out at the location of the horizontal seam.

The economic effectiveness of the described invention is expressed as follows.

Compared to a wall in the ground, made of monolithic reinforced concrete, reinforcement is reduced by 2-2.5 times due to the normal adhesion of the reinforcement to the concrete, as well as the concreting of the structure in a horizontal position.

Compared with prefabricated panels made of one-piece panels, the carrying capacity of equipment for manufacturing, transporting and assembling will decrease as many times as the individual elements are cut at height.

In addition, the described method of installing guides on the mount of the 1st panel in the open air simplifies the work, guarantees the accuracy of its installation, as well as the accuracy of mounting the panels of subsequent Rus.

In addition, the system of stops and pins in the joints ensures the geometric constancy of the panels during installation and filling of the sinuses, as well as the development of soil from inside the structure.

Claims (2)

1.Filakhtov AL and others. The construction of structures by the method of “wall in the ground. Kiev, “Budivelnik, 1976 ,; with. 143-144. 2. The patent of Japan. To 48-6886, cl. 86 (3) A4, published. 1973. fig 2 77355 I  lA7 / / at 6 V / / 15 fae. 7 and / / / / / 2 5, / 2 Fi2.d 2S FIG. YU