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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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Применить Всего найдено 4. Отображено 4.
27-06-2023 дата публикации

Method for calculating axial allowable bearing capacity of single pile of railway cast-in-situ bored friction pile foundation

Номер: CN116341089A
Автор: LIAO LIJIAN, GAO PU, WANG XIUYAN, SU WEI, WANG YUQUAN, ZENG YINYONG, YANG ZHIHUI, PENG JIANDONG, LI XIAOBO
Принадлежит:

The invention relates to a method for calculating the axial allowable bearing capacity of a single pile of a railway cast-in-situ bored friction pile foundation. The method comprises the following steps: calculating the calculated length lp of a pile body; calculating a pile body stability coefficient phi; the final concrete center compressive strength [sigma c] is calculated; calculating the axial allowable bearing capacity P1 of the single pile according to the material strength of the pile body; calculating the axial allowable bearing capacity P2 of the single pile according to the rock-soil resistance; calculating the axial allowable bearing capacity [P] of the single pile, when P1lt; when P2 is equal to P1, [P] is equal to P1; otherwise, [P] = P2. According to the method, aiming at the calculation problem of the axial allowable bearing capacity of a single pile in the field of pile foundations, the influence of the strength of a pile body material is considered from the aspects of ...

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Номер записи: 1
07-07-2023 дата публикации

Synchronous construction method for tower beams of special-shaped steel tower cable-stayed bridge

Номер: CN116397539A
Автор: LIU XIAOMIN, XIE PENGLIN, ZHOU JUNLONG, CAO HAIQING, LI LINTING, ZENG YINYONG, ZHAO LEI, LI BING, LI XIAOPENG, ZHAO XU, JIANG WEI, ZHANG DING
Принадлежит:

The invention belongs to the technical field of bridge design and construction, and particularly relates to a special-shaped steel tower cable-stayed bridge tower beam synchronous construction method which comprises the following steps that a cable-stayed bridge main beam support, a steel tower support and a gantry crane foundation are synchronously erected; a gantry crane rail is laid on the gantry crane foundation, and a gantry crane is installed; mounting a steel-concrete combined section of the swivel steel tower and pouring concrete; installing a swivel steel tower T1 section, and testing a swivel; a cable-stayed bridge main beam is poured, and the remaining steel tower sections are spliced section by section through the gantry crane; mounting a latticed column and a latticed column jack, and vertically rotating and closing the steel tower; stay cables are installed and tensioned, and accessory structures are dismantled; and bridge deck pavement is installed, and construction of the ...

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Номер записи: 2
27-06-2023 дата публикации

Calculation method for rock-socketed depth of open caisson

Номер: CN116335216A
Автор: GAO PU, LIAO LIJIAN, WANG XIUYAN, SU WEI, ZENG YINYONG, WANG YUQUAN, YANG ZHIHUI, ZHANG RAN, PENG JIANDONG
Принадлежит:

The invention relates to a method for calculating the rock-socketed depth of an open caisson. The method comprises the steps that the rock-socketed depth h = h0 of the open caisson is initially set; the calculation width b0 of the open caisson, the rotation angle w of the open caisson around the bottom face, the transverse force P and the transverse bending moment My borne by the center of the rock-socketed part of the open caisson, the maximum rock stress Pmax of the rock-socketed part of the open caisson and the allowable rock stress [P] are calculated; when Pmax is smaller than or equal to [P], the open caisson rock socketed meets the requirement, and calculation is stopped; when Pmaxgt; when Pmax is smaller than [P], the open caisson rock-socketed does not meet the requirement, the rock-socketed depth h is increased, the steps are repeated till Pmax is smaller than or equal to [P], and the rock-socketed depth h at the moment is the final calculated depth. According to the method, on ...

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Номер записи: 3
28-07-2023 дата публикации

Shallow foundation pit excavation method for grouting reinforcement enclosure support in pebble stratum

Номер: CN116497838A
Автор: ZENG YINYONG, WANG XINCHUAN, WU TINGYAO, DONG MISI, WEN ZHONGXING, LUO SEN, DIAO NAIHAO
Принадлежит:

The invention provides a pebble stratum grouting reinforcement enclosure support shallow foundation pit excavation method which comprises the following steps: determining an excavation range to form a shallow foundation pit excavation area; a plurality of steel floral tubes arranged in a quincunx shape are sequentially inserted in the outer edge of the shallow foundation pit excavation area; grouting is conducted on the steel floral tubes arranged at intervals in sequence; grouting is conducted on the steel floral tubes in a circulating mode; the foundation pit is excavated according to the shallow foundation pit excavation area; a pebble stratum in the shallow foundation pit excavation area is excavated multiple times, and anchor rods are installed on the inner side wall of the shallow foundation pit excavation area multiple times in a matched mode; and finally, the pebble stratum in the excavation area of the shallow foundation pit is excavated to a preset position. The technical problems ...

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Номер записи: 4