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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 12. Отображено 12.
23-05-2023 дата публикации

Bidirectional incremental launching construction method for bidirectional longitudinal slope complex vertical curve bridge

Номер: CN116145574A
Принадлежит:

The invention relates to a bidirectional pushing construction method for a bidirectional longitudinal slope complex vertical curve bridge, which comprises the following specific steps of: dividing a main beam into a left main beam and a right main beam, arranging a splicing bracket and pushing piers in a steel structure splicing area, arranging the pushing piers in water, and arranging walking type pushing jacks and steel bearing beams on the pushing piers and a bridge abutment; the left main beam and the right main beam are spliced, the spliced left main beam and right main beam are rotated by a certain angle with the closure end as a rotation point, the left main beam and right main beam are located at the horizontal position, and a guide beam is welded; pushing to a specified position; after the left main beam and the right main beam are pushed to pushing piers in water, the guide beams are dismantled, and the line shapes of the main beams are adjusted; closing the midspan of the left ...

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07-04-2023 дата публикации

Steel truss girder cable-stayed bridge vertical rotation construction method

Номер: CN115928610A
Принадлежит:

The invention relates to a vertical rotation construction method for a steel truss girder cable-stayed bridge. The method comprises the specific steps that S1, auxiliary measures are adopted for construction, wherein auxiliary measures comprise a steel girder splicing platform, a temporary hinge, a buckling and hanging system, a tower top crane and a horizontal jack assembly; s2, symmetrically and vertically assembling partial segments of the main beam; s3, symmetrically and vertically rotating partial sections of the main beam; s4, mounting the rest sections of the main beam; s5, stay cables are installed; and S6, removing auxiliary construction measures. The tower top crane and the buckling and hanging system are used for achieving vertical assembling and symmetrical rotating construction of the main beams of the steel truss girder cable-stayed bridge, the assembling speed of the steel beams is high, the linear control precision is high, large overwater hoisting machinery is not needed ...

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06-06-2023 дата публикации

Steel truss girder suspension bridge first girder and second cable construction method

Номер: CN116219904A
Принадлежит:

The invention relates to a steel truss girder suspension bridge girder-first and cable-second construction method, which comprises the following steps of: firstly, symmetrically and vertically splicing a girder part section on two sides of a main tower by using an auxiliary tower frame, initially rotating by using a horizontal jack, then unloading and rotating to be horizontal by using a buckling and hanging system, hoisting the girder section and a midspan closure section in a main tower area, and finally hoisting the girder section and the midspan closure section in the main tower area; and installing a main cable by using an auxiliary tower, then installing a sling, and finally removing auxiliary measures. The method has the advantages that the steel beam splicing speed is high, the linear control precision is high, large-scale overwater hoisting machinery is not needed, temporary supports are arranged in water, the number of temporary facilities is small, the economical efficiency is ...

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14-04-2023 дата публикации

Irregular wave slamming construction platform stress analysis method and system and computer readable storage medium thereof

Номер: CN115964896A
Принадлежит:

According to the irregular wave slamming construction platform stress analysis method and system and the computer readable storage medium, the stress condition of the irregular wave slamming construction platform is directly, rapidly and efficiently calculated based on a large number of test measurement data according to the basic size of the platform and the basic parameters of waves. The defects of complexity, high measurement cost and the like of direct calculation of slamming pressure load forecast in the conventional theoretical calculation and model test are overcome.

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26-05-2023 дата публикации

Regular wave slamming construction platform stress analysis method and system and computer readable storage medium thereof

Номер: CN116167132A
Принадлежит:

According to the regular wave slamming construction platform stress analysis method and system and the computer readable storage medium, the stress condition of the regular wave slamming construction platform is directly, rapidly and efficiently calculated based on a large number of test measurement data according to the basic size of the platform and the basic parameters of waves. The defects of complexity, high measurement cost and the like of direct calculation of slamming pressure load forecast in the conventional theoretical calculation and model test are overcome.

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18-07-2023 дата публикации

Self-anchoring device for piling on ship and piling construction method

Номер: CN116446396A
Принадлежит:

The invention relates to a self-anchoring device for piling on a ship and a piling construction method, and the self-anchoring device comprises a plurality of self-anchoring assemblies arranged on the piling ship; each self-anchoring assembly comprises a vertical sliding frame, a sliding block, a supporting leg and a hoop clamp. A self-anchoring assembly is installed on a pile driving barge, and firstly, a vertical sliding frame is welded to a deck structure of the pile driving barge. The supporting legs are connected with the sliding blocks, and the sliding blocks can vertically slide in the sliding ways. The other ends of the supporting legs are connected with the hoop clamps, the hoop clamps tightly hold the hit steel pipe piles, the pile driving barge is connected with the hit pile foundation through the work, then a new steel pipe pile is driven at the bow of the pile driving barge through the pile driving machine, then the pile driving barge continues to advance, and multi-span underwater ...

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25-07-2023 дата публикации

Suspension type formwork support of water area concrete rigid frame bridge and construction method of suspension type formwork support

Номер: CN116479776A
Принадлежит:

The water area concrete rigid frame bridge suspension type formwork support comprises a plurality of steel pipe columns, the steel pipe columns are arranged at the top of a bridge pier column, a cast-in-place box beam is arranged at the top of the bridge pier column, a box beam bottom die is arranged at the bottom of the cast-in-place box beam, saddle weights are arranged at the two ends of the top of the box beam bottom die, and the saddle weights are located on the left side and the right side of the cast-in-place box beam. A plurality of suspension frames are arranged at the bottom of the box girder bottom die, guardrails are connected to the front ends and the rear ends of the tops of the suspension frames and located on the front sides and the rear sides of the cast-in-place box girders, the steel pipe columns are connected with the suspension frames through inhaul cables, and transverse supports are connected between the adjacent steel pipe columns on the front side and the rear side ...

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01-07-2015 дата публикации

Automatic excitation device of railway bridge foundation structure

Номер: CN104748932A
Принадлежит:

The invention discloses an automatic excitation device of a railway bridge foundation structure. The automatic excitation device of the railway bridge foundation structure comprises a main fixing rack fixed on a padstone at the top of a pier, an impact assembly has suspension type design for reducing vibration of the whole excitation device, and balance weight of an impact head can be automatically adjusted for meeting impact force required by the experiment. A hammer head is made of the beef tendon special polyester material capable of protecting the surface of the pier when the pier is impacted repeatedly. An air pump is used for offering the required power. The automatic excitation device can adjust the size and frequency of the excitation power for automatically impacting the railway bridge foundation structure via the power with fixed frequency and confirmed amplitude, the operation is convenient, the efficiency is high, nondeterminacy and nonrepeatability of the excitation power can ...

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23-06-2023 дата публикации

Large-span bidirectional longitudinal slope bridge incremental launching construction method

Номер: CN116289627A
Принадлежит:

The invention relates to a pushing construction method for a large-span bidirectional longitudinal slope bridge. The pushing construction method comprises the specific steps that a plurality of assembling jig frames and ground temporary piers are arranged in a steel structure assembling area on one side of a main bridge, and steel bearing beams and walking type pushing jacks are arranged; the main beam is disconnected in the span, the two disconnected parts of the main beam rotate by a certain angle from the midspan position so that the two parts can be located at the horizontal position, the disconnected positions of the span of the main beam are connected through temporary rigid connection, and a guide beam is welded; temporary piers in water are constructed, and steel bearing beams and walking type pushing jacks are arranged; pushing is started until the plane position of the main beam is pushed in place; relevant parts are dismantled, the temporary rigid connection is disconnected, ...

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08-08-2023 дата публикации

Steel box girder traction construction device and construction method thereof

Номер: CN116556210A
Принадлежит:

The invention relates to a steel box girder traction construction device and a construction method thereof.The construction device comprises an abutment cover beam, a steel box girder, a guide beam and a steel box girder assembling platform, a plurality of sliding ways are installed at the bottom of the steel box girder and the bottom of the guide beam in the steel box girder traction direction, and rolling devices are arranged at the positions, corresponding to the sliding ways, of the tops of the abutment cover beam and the steel box girder assembling platform; the rolling devices are installed in the corresponding sliding ways in a rolling mode, two guide limiting devices are symmetrically arranged on the portions, on the two sides of the middle sliding way, of the top of the abutment cover beam and the top of the steel box beam assembling platform, hydraulic jacks are symmetrically arranged on the portions, below the steel box beam, of the two sides of the top of the abutment cover ...

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21-07-2023 дата публикации

Deepwater foundation auxiliary construction structure and construction method thereof

Номер: CN116464011A
Принадлежит:

The invention relates to a deepwater foundation auxiliary construction structure and a construction method thereof. The construction structure comprises a central platform truss, side platform trusses, temporary steel pipe piles, a hoisting device, a temporary fixed connection part, a platform panel, a gantry crane, a steel casing, a drilling machine, a cast-in-situ bored pile, a cofferdam wall body and an inner support. During construction, the center platform truss and the side platform trusses are of an integrated structure to conduct cast-in-situ bored pile construction, after construction is completed, the center platform truss and the side platform trusses are separated, the center platform truss sinks to serve as a bottom plate of the cofferdam structure, construction of the cofferdam structure is conducted, and finally a bearing platform and a pier are constructed. The center platform truss and the side platform trusses are prefabricated in a factory and transported to the site ...

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25-07-2023 дата публикации

Deepwater inclined uneven bare rock area steel casing positioning device and pile foundation hole forming method

Номер: CN116479888A
Принадлежит:

The invention discloses a steel casing positioning device and a pile foundation hole forming method in a deepwater inclined uneven bare rock area. The positioning device comprises an underwater steel jacket box, an anti-sliding steel pile, foundation fixing concrete, an outer casing, an inner casing, leakage stopping concrete and a bedrock inner reaming hole. During pile foundation hole forming, firstly, the underwater steel jacket box is tightly attached to the inclined bedrock face, then foundation fixing concrete is poured, then the outer pile casing is inserted into the foundation fixing concrete, the outer pile casing is fixed to the inclined bedrock face after hardening, then a percussion drill is used for completing bedrock inner reaming, the inner pile casing is put down, and leakage stopping concrete is poured. Conditions are provided for hole forming of the percussion drill. The steel casing is firmly fixed, does not leak slurry, can enter rock, solves the problems that the steel ...

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