The method of construction of the underground station deep under the surface

 

(57) Abstract:

The invention relates to underground construction, mainly for the construction of metro stations deep foundations. The method of construction of the underground station deep under the surface includes a preliminary excavation of the tunnels with a run in them the supports for the arches of the middle tunnel, the driving side and the middle of the tunnel at the beginning of Selig to trim installed footings, installation of lining tunnels with the bearing lining of the middle tunnel support and lining the sides of the tunnels on the feet and on the ground, and then the subsequent development of soil to the bottom of the supports with the construction of the tray part of the station. The difference is that the supports in the tunnels are in the form of columns with the runs and the support elements and install them vraspor vertically with releasing their inventory spacers, then go first middle tunnel, and then the side with the installation of the lining of having an internal cavity blocks, pump cement mortar for their external surface of the concreted internal cavity blocks benches, equal step columns, as part of the flume middle of the tunnel are in the form of a monolithic plate with education it together with arches and columns with progo codes. 2 Il.

The invention relates to underground construction, mainly for the construction of metro stations deep foundations.

A known method of construction of the column subway station deep under the surface with the design of the tubing based on the longitudinal metal girders and columns. The method includes the construction side of the station tunnels, mounting them lining, installation of the side tunnels columns and girders, the sinking of the middle station of the tunnel with the subsequent installation of its lining,disassembly tubing temporary filling [1]

The disadvantages of this method of construction of the stations is large, the intensity, and the need for manufacturing of shaped tubing that is used in the lining.

Closest to the present invention is a method of construction of the underground station, deep foundations, including pre-drilling of the tunnels with the execution of them supports for the arches of the side and middle of the tunnels, the driving side and the middle of the tunnel at the beginning of Selig to trim installed footings, installation of lining tunnels with the bearing lining of the middle tunnel support and lining the sides of the tunnels on the feet and on the ground, and then subsequent Razrabotka station is the increased complexity and intensity when performing technological operations with the installation of the shaped tubing canted jumper, tubing temporary filling holes when drilling the lateral and middle tunnels, in the exercise of penetration openings with advanced dismantlement of temporary filling and the subsequent installation of the lining openings, and at the tunnels supports in the form of tubing with a concrete tides and medium supports in the form of a bonded lower adjacent segment.

The aim of the invention is to reduce labor costs and material consumption during the construction of the station.

This is achieved by the fact that the supports in the tunnels of the middle of the tunnel are in the form of columns with the runs and the support elements and install them in the thrust vertically with releasing their inventory spacers on the side of the tunnel, facing to the side tunnel, followed by a cyclical, the driving of the first medium, and then the side tunnels with the installation of the lining of having an internal cavity blocks that connect with each other, pump cement mortar for their external surface and concreted internal cavity blocks benches, equal step columns, as part of the flume middle of the tunnel are in the form of a monolithic plate with education it together with arches and columns runs with rigid structures, and the arches of the side tunnels.

Works in this way the construction of the station allows to mechanize the tunneling and reduce surface subsidence in the development of the soil, to prevent penetration openings between tunnels with installation-dismantling of the lining, which reduces the consumption of materials, and reduce labor costs in the construction of the station by performing the supports, technologically more efficient, and reduce plant costs by 10-15%

In Fig. 1 shows the excavation of the tunnels, installation of supports, the sinking of the middle tunnel and installation of the lining with the construction of his tray part (cross-section).

In Fig. 2 shows the penetration of the side tunnels and installation of the lining with the construction of their gutter parts in the form of the body (cross-section).

Underground station includes side 1 and medium 2 tunnels to the lining 3 and the tray part 4, the two shafts 5 with bearings made in the form of columns with 6 runs 7, the supporting elements 8, the return codes 9 and monolithic flat plate 10.

The method of construction of the station is as follows. The driving of adits 5 perform such as mechanized tunnel boring machines (not shown) that provides sufficient precision machining of the walls. In PCs Aleut inventory spacers 11. Then carried out cyclically (column spacing), the driving of the intermediate 2 tunnel and the installation of the lining of the blocks having an internal cavity. The lining 3 is mounted, connecting the blocks together in series, using special platforms (not shown). Then for the outer surface of the lining 3 of the pump units of rapid-hardening cement mortar to ensure a snug fit to the wall of the tunnel, and then concreted internal cavity blocks. When this control is provided completely fill the gap between the outer surface of the blocks and the wall, as well as the completeness of the filling when pouring the internal cavity of the blocks in the connection. Development of the soil tray part 4 medium 2 tunnel and its construction in the form of a monolithic plate 10 in connection with the arch through the column with 6 runs 7 creates rigid in the transverse-longitudinal section design. Then carried out cyclically (step columns), the driving of the side 1 of the tunnels and the installation of the lining 3 of the blocks with bearing on one side on the ground. Moreover, the sequence of operations performed in the likeness of mounting medium lining 2 of the tunnel. After installation of the lining 3 side 1 tunnels inventory spacers 11 is removed. Then develop the soil in locket with the arches of the side tunnels.

The method of construction of the underground station deep foundations, including pre-drilling of the tunnels with the execution of them supports for the arches of the middle tunnel, the driving side and the middle of the tunnel at the beginning of Selig to trim installed footings, installation of lining tunnels with the bearing lining of the middle tunnel support and lining the sides of the tunnels on the feet and on the ground, and then the subsequent development of soil to the bottom of the supports with the construction of the tray part of the station, characterized in that the support in the galleries are in the form of columns with the runs and the support elements and install them vraspor vertically with releasing their inventory spacers on the side of the tunnel, facing to the side tunnel, followed by a cyclical, the driving of the first medium, and then the side tunnels with the installation of the lining of having an internal cavity blocks that connect with each other, pump cement mortar for their external surface and concreted internal cavity blocks benches, equal step columns, as part of the flume middle of the tunnel are in the form of a monolithic plate with education it together with arches and columns runs with rigid construction and after installation of the lining of the side tunnels erected their

 

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FIELD: hydraulic structures, particularly for laying underwater pipelines.

SUBSTANCE: method involves transporting pipeline tunnel sections by water to pipeline laying site; submerging thereof; placing pipeline tunnel sections on underwater piers with the use of flexible ties; sealing pipeline tunnel sections. Tunnel sections have nearly zero floatability. Pipeline tunnel sections are submerged and put on piers by flexible ties. Then pipeline tunnel sections are pushed in docking unit of previous submerged section with the use of submarine and sealed from inside and outside along with connection of inner service lines. After finishing pipeline tunnel sections assemblage entry and exit tunnels are secured to pipeline tunnel. System for underwater pipeline tunnel sections assembling includes underwater pipeline tunnel mounted on underwater piers and formed of separate sections having design lengths. Pipeline tunnel sections are divided into two chambers by horizontal partition. Transport path is arranged in upper chamber. Lower section is divided into several cavities by air-tight partitions for laying inner pipelines. Underwater pipeline tunnel sections are formed of two thick-walled shells of steel plates or titanium alloy. Longitudinal partitions are mounted between shells and secured along perimeter thereof. Longitudinal partitions serve as pipelines and stiffening ribs. Pipeline tunnel sections are laid on underwater permanent and temporary piers. Upper pier parts have bases of semicircular or parabolic shape. Pier part dimensions exceed that of pipeline tunnel sections.

EFFECT: increased efficiency of pipeline laying and maintenance during multi-purpose usage thereof.

5 cl, 6 dwg

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