Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Solid concrete main tower cable-stayed construction method for extradosed cable-stayed extra-large bridge
The invention relates to a short tower cable-stayed extra-large bridge solid concrete main tower cable-stayed construction method which comprises the following steps: constructing a pier on a bearing platform, and then pouring a 0 # box girder and a main tower; the cable hanging construction platforms are arranged on the two sides of the main tower. The HDPE pipe is lifted; a steel strand is arranged in the HDPE pipe in a penetrating manner and is anchored; the steel strand-penetrated tower end is tensioned by using a hard traction jack; and a soft traction jack and a hard traction jack are sequentially used for tensioning the steel strand-penetrated beam end. The main tower bottom hanging type lifting cable hanging construction platform has the beneficial effects that the main tower bottom hanging type lifting cable hanging construction platform technology is adopted, the cable hanging construction platform is connected with the movable pulley block, the winch and the fixed pulley block through the tower top support arranged at the top end of the main tower, a recyclable lifting system is formed, and the height of the cable hanging construction platform is roughly adjusted; and meanwhile, the height of the hanging cable construction platform is accurately adjusted through the jack arranged on the hanging cable construction platform, an out-of-tower support does not need to be specially installed in the construction process to assist installation of the stay cable, and the hanging cable installation speed is increased.
本发明涉及一种矮塔斜拉特大桥实心混凝土主塔拉索施工方法，包括以下步骤：承台上施工桥墩，再浇筑0#箱梁和主塔；挂索施工平台布置于主塔两侧；起吊HDPE管；HDPE管内穿设钢绞线并锚固；利用硬牵引千斤顶张拉已穿钢绞线塔端；先后利用软牵引千斤顶和硬牵引千斤顶张拉已穿钢绞线梁端。本发明的有益效果是：采用主塔下挂式可升降挂索施工平台技术，挂索施工平台利用主塔顶端设置的塔顶支架，分别与动滑车组、卷扬机及定滑车组相连，形成可循环升降系统，粗调节挂索施工平台的高度，同时通过挂索施工平台上设置的千斤顶精确调节挂索施工平台的高度，施工过程中无需特地安装塔外支架辅助斜拉索安装，提高了挂索安装速度。
Solid concrete main tower cable-stayed construction method for extradosed cable-stayed extra-large bridge
The invention relates to a short tower cable-stayed extra-large bridge solid concrete main tower cable-stayed construction method which comprises the following steps: constructing a pier on a bearing platform, and then pouring a 0 # box girder and a main tower; the cable hanging construction platforms are arranged on the two sides of the main tower. The HDPE pipe is lifted; a steel strand is arranged in the HDPE pipe in a penetrating manner and is anchored; the steel strand-penetrated tower end is tensioned by using a hard traction jack; and a soft traction jack and a hard traction jack are sequentially used for tensioning the steel strand-penetrated beam end. The main tower bottom hanging type lifting cable hanging construction platform has the beneficial effects that the main tower bottom hanging type lifting cable hanging construction platform technology is adopted, the cable hanging construction platform is connected with the movable pulley block, the winch and the fixed pulley block through the tower top support arranged at the top end of the main tower, a recyclable lifting system is formed, and the height of the cable hanging construction platform is roughly adjusted; and meanwhile, the height of the hanging cable construction platform is accurately adjusted through the jack arranged on the hanging cable construction platform, an out-of-tower support does not need to be specially installed in the construction process to assist installation of the stay cable, and the hanging cable installation speed is increased.
本发明涉及一种矮塔斜拉特大桥实心混凝土主塔拉索施工方法，包括以下步骤：承台上施工桥墩，再浇筑0#箱梁和主塔；挂索施工平台布置于主塔两侧；起吊HDPE管；HDPE管内穿设钢绞线并锚固；利用硬牵引千斤顶张拉已穿钢绞线塔端；先后利用软牵引千斤顶和硬牵引千斤顶张拉已穿钢绞线梁端。本发明的有益效果是：采用主塔下挂式可升降挂索施工平台技术，挂索施工平台利用主塔顶端设置的塔顶支架，分别与动滑车组、卷扬机及定滑车组相连，形成可循环升降系统，粗调节挂索施工平台的高度，同时通过挂索施工平台上设置的千斤顶精确调节挂索施工平台的高度，施工过程中无需特地安装塔外支架辅助斜拉索安装，提高了挂索安装速度。
Solid concrete main tower cable-stayed construction method for extradosed cable-stayed extra-large bridge
矮塔斜拉特大桥实心混凝土主塔拉索施工方法
SU YING (Autor:in) / LI JIANCHENG (Autor:in) / YE FENG (Autor:in) / YU MENG (Autor:in) / XUE KE (Autor:in) / SUN FENG (Autor:in) / MA LILING (Autor:in) / YANG CHEN (Autor:in) / MA CHANGKAI (Autor:in)
09.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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