The invention relates to a cross-sea extra-large cable tower bridge steel beam barge floating crane suspension splicing construction method, which belongs to the technical field of bridge construction, and comprises the following steps: step 1, after a floating crane and a beam transporting ship are respectively anchored and positioned, a crane ship suspension arm is rotated to the position of the beam transporting ship, a hanging bracket is dropped on a beam section, a pin shaft is inserted, and a beam section is formed; then the first section of steel box girder is lifted to a target position; secondly, a first pair of stay cables is installed on the first section of steel box girder, and after first tensioning is completed, a deck crane is installed; 3, carrying out a load test on the deck crane; fourthly, the next section of steel box girder is lifted through the bridge deck crane, when the steel box girder is lifted to the position 50 cm away from the bridge deck, lifting operation is stopped, the length of the adjustable connecting rod is adjusted, and the longitudinal slope of the steel box girder meets the design requirement; fifthly, after the next section of steel box girder is matched, welded and fixed, the stay cables are hung and tensioned for the first time, and the deck crane is moved forwards after tensioning is completed; and step 6, repeating the step 4 and the step 5 until closure.
本发明涉及一种跨海特大索塔桥钢梁驳船浮吊悬拼施工方法,属于桥梁施工技术领域,包括下列步骤:步骤一:浮吊及运梁船分别抛锚定位后,起重船吊臂旋转至运梁船位置,并将吊架落至梁段上,穿好销轴,随后将第一段钢箱梁起吊至目标位置处;步骤二:第一对斜拉索安装在第一段钢箱梁,完成第一次张拉后,安装桥面吊机;步骤三:进行桥面吊机的载荷试验;步骤四:利用桥面吊机起吊下一段钢箱梁,当钢箱梁提升至距桥面50cm处时,停止提升操作,调整可调连杆的长度,使钢箱梁纵坡符合设计要求;步骤五:将下一段钢箱梁匹配和焊接固定后,斜拉索挂索并第1次张拉,张拉完毕后前移桥面吊机;步骤六:重复步骤四和步骤五,直至合龙。
Cross-sea extra-large cable bent tower bridge steel beam barge floating crane suspension splicing construction method
一种跨海特大索塔桥钢梁驳船浮吊悬拼施工方法
2025-03-21
Patent
Electronic Resource
Chinese
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