SU1239339A1 - Method and apparatus for constructing underground structure - Google Patents

Abstract

1. A method of erecting an underground structure, including mounting sliding formwork of vertical structures and concreting them when a structure is pinched in the ground and the formwork is moved down due to excessive pressure of the concrete mix in it, in order to extend technological capabilities. Simultaneously with the installation of formwork of vertical structures, ceiling formwork is installed, while the waterproofing structure is applied to the outer surface of the structure and concreted together with concreting vertical structures, and when the formwork is moved into the cavity between the formwork and compressed ceiling, compressed air is injected. 2. A device for erecting an underground structure according to claim 1, including vertical shields for sliding formwork and knife devices, characterized in that it is provided with a shuttering form connected to vertical shields for sliding formwork, a dividing wall installed inside along the structure perimeter, a supply line water insulating composition, communicated with the cavity formed by the sliding formwork and the dividing wall, and the compressed air supply line to the shuttering formwork. (L / /// // u // // u W / / Ф «g, 1 72 77 7 Yu 00 with co with co

Description

The invention relates to the construction, namely the construction of underground structures made of monolithic reinforced concrete, and can be used for the construction of underground structures with floors, of any heights, at any depth, for any purpose.

The aim of the invention is to expand the technological capabilities of the erected structure due to the simultaneous implementation of external and internal structures and floors.

FIG. 1 shows the site for the construction of the proposed method and device; in fig. 2 - equipment, embedded in the ground at the height of the formwork, concreted the uppermost ceiling and the upper part of the walls and columns; in fig. 3 - the construction is filled with soil, and the device is embedded in the soil for a further depth; in fig. 4 - the equipment is embedded in the ground to a depth of one floor and the walls and columns of the entire upper floor are concreted; in fig. 5 - the device is embedded in the soil at the height of the formwork; in fig. 6 - the ceiling and the upper part below the next floor are concreted; in fig. 7 - the formwork is embedded in the soil at a certain height; in fig. 8 - all floors are built and lowered.

The method of erecting an underground structure is carried out in the following sequence.

Prior to the commencement of the main construction work, a site is made at the site set aside for construction, or, if necessary, is trenched to a depth equal to the thickness of the soil above the erected structure. A proposed device is installed at the site, which includes a pointed lower bearing, cutting rim around the perimeter of structure 1 and tips under the columns (or prisms under the walls) 2 inside the structure, external boards of wall forms 3, internal panels 4 and a dividing wall 5, collector 6 for injection waterproofing, formwork of internal columns (walls) - shields 7, horizontal shields 8 floor forms. The device also includes jacks 9, tap-off units 10 for fittings H and coil holders 12 for fitting coils, concrete ducts 13, concrete pumps 14, air ducts 15, compressor 16, flexible rods 17 for controlling the direction of movement of the formwork, drums 18 with braking devices.

After careful alignment of formwork on slab formwork shields and between shields of vertical mono-supporting structures

The reinforcement cages are tied into the external walls and internal supporting structures with the help of concrete pumps 14, through the concrete pipelines 13 and the concrete mixture is laid into the ceiling by any known means. After it is cured, the soil is produced under the installed device, for example, by hydro-mechanical method and using jacks 9 resting on the overlap of the upper floor, loaded with soil, the formwork from the overlap and the upper part of the walls (columns) is opened and immersed it to a certain depth sufficient to allow the concrete mixtures between the bottom of the formwork and the upper concrete parts

5 walls (columns) 3. Concrete mixture is injected into the cavity with the help of concrete pumps 14, producing soil under the device.

Thus, work continues until the bottom of the wall reaches the mark corresponding to the height of the floor. The jack plungers are in the lowered condition. Further, continuing to produce soil under the device, compressed air is injected into the cavity between the overlap and the formwork panels using a compressor 16. At the same time, the device is immersed in the ground to the height of the vertical formwork panels, and the concrete structure is held by compressed air, the cantilever part of the slab 19, resting on the edges of the excavation, and penetrated by reinforcing rods, remains in the initial position. After the equipment is submerged in the ground to the height of the external formwork panels, the slab and the upper part of the underlying

five

the floors are reinforced and outlined by means

laid concrete. Further work continues with the proposed cycles until all floors are erected. In the process of concreting the external walls and lowering the formwork, a collector 6 is supplied with a waterproofing composition, such as cold asphalt mastic, which forms a waterproofing jacket around the building.

After completion of the work, the device is dismantled, removed from the structure, and the structure itself is transferred for further continuation of finishing work and installation of special equipment.

Throughout the entire process of erecting an underground structure with the help of flexible bars, g 11, winding up from the braking drums 18, continuous monitoring and adjustment of the movement of the device is carried out when it is lowered.

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Compiled by L. Cherepenkin

Editor I. ShullaTekhred I. VeresKorrektor A. Obruchar

Order 3369/30 Circulation 470Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (2)

METHOD FOR CONSTRUCTING UNDERGROUND STRUCTURE AND DEVICE FOR ITS IMPLEMENTATION (57) 1. The method of erecting an underground structure, including the installation of sliding formwork of vertical structures and their concreting when the structure is pinched in the ground and moving the formwork down due to overpressure of the concrete mixture in it, characterized in that , in order to expand technological capabilities, at the same time as the installation of the formwork of vertical structures, the formwork of the floors is mounted, while hydra the insulating composition and concreting floors in conjunction with concreting of vertical structures, and when moving the formwork into the cavity between the formwork of the floor and the concrete floor, pressurized air is injected. 2. Device for the construction of an underground structure according to π. 1, including vertical slab formwork panels and knife devices, characterized in that it is equipped with a slab formwork connected to the vertical slab formwork panels, a dividing wall installed inside the perimeter of the structure, a supply line for the waterproofing structure in communication with the cavity formed by the sliding formwork and dividing wall, and the compressed air supply line to the floor formwork.