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A platform for research: civil engineering, architecture and urbanism
Tensioning asymmetric construction method for large-span cantilever arch ribs after suspension clasp separation
The invention relates to a tensioning asymmetric construction method for large-span cantilever arch ribs after suspension clasp separation. The method comprises the following steps: hoisting arch rib sections by adopting a cable crane, arranging an arch rib hoisting platform on a bank, sequentially hoisting each section of arch rib cantilevers on the opposite bank, continuously hoisting at least 3-4 sections after a first buckling anchor point section is mounted, mounting a buckling tower on a arch rib side span section, performing first-time tensioning, performing second-time tensioning after all follow-up sections are hoisted, then hoisting another bank of arch rib cantilevers according to the same method, and finally hoisting a closure section. The method is suitable for suspension clasp separation construction of cantilever arch ribs under the condition that the construction site is limited and the height of a cable tower is reduced, can be accelerate the construction progress, and improves the construction efficiency.
本发明涉及一种大跨度悬拼拱肋吊扣分离后张拉非对称施工方法，采用缆索吊吊装拱肋节段，将拱肋起吊平台设置在一岸，先依次吊装对岸的拱肋悬臂各节段，第一扣锚点节段安装完成后继续吊装至少3‑4个节段后，在拱肋边跨段上安装扣塔进行第一次张拉，在后续节段全部吊装完成后进行第二次张拉，然后按同样方法吊装另一岸拱肋悬臂，最后吊装合龙段。本发明适用于施工场地受限缆塔高度降低情况下的悬拼拱肋吊扣分离分离施工，并可加快施工进度，提高施工效率。
Tensioning asymmetric construction method for large-span cantilever arch ribs after suspension clasp separation
The invention relates to a tensioning asymmetric construction method for large-span cantilever arch ribs after suspension clasp separation. The method comprises the following steps: hoisting arch rib sections by adopting a cable crane, arranging an arch rib hoisting platform on a bank, sequentially hoisting each section of arch rib cantilevers on the opposite bank, continuously hoisting at least 3-4 sections after a first buckling anchor point section is mounted, mounting a buckling tower on a arch rib side span section, performing first-time tensioning, performing second-time tensioning after all follow-up sections are hoisted, then hoisting another bank of arch rib cantilevers according to the same method, and finally hoisting a closure section. The method is suitable for suspension clasp separation construction of cantilever arch ribs under the condition that the construction site is limited and the height of a cable tower is reduced, can be accelerate the construction progress, and improves the construction efficiency.
本发明涉及一种大跨度悬拼拱肋吊扣分离后张拉非对称施工方法，采用缆索吊吊装拱肋节段，将拱肋起吊平台设置在一岸，先依次吊装对岸的拱肋悬臂各节段，第一扣锚点节段安装完成后继续吊装至少3‑4个节段后，在拱肋边跨段上安装扣塔进行第一次张拉，在后续节段全部吊装完成后进行第二次张拉，然后按同样方法吊装另一岸拱肋悬臂，最后吊装合龙段。本发明适用于施工场地受限缆塔高度降低情况下的悬拼拱肋吊扣分离分离施工，并可加快施工进度，提高施工效率。
Tensioning asymmetric construction method for large-span cantilever arch ribs after suspension clasp separation
一种大跨度悬拼拱肋吊扣分离后张拉非对称施工方法
PANG QING (author) / WANG ZHIQIANG (author) / LUO YONGHUA (author) / LIU ANZHENG (author) / LIU HENGYU (author) / YAO DONGXU (author) / LI QIANG (author)
2021-07-02
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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