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A platform for research: civil engineering, architecture and urbanism
Device and method for integrally dismantling old parallel steel strand stay cable
The invention relates to a device and a method for integrally dismantling old parallel steel strand stay cables, a switching anchorage device is arranged in an internal space of a bracket, can be anchored with a steel strand at a tension end of a stay cable with a shorter exposed length through a stay cable connecting part of the switching anchorage device, and can be connected with a threaded pull rod through an inner anchor nest, so that a switching tool is provided, and the switching anchorage device can be used for replacing the steel strand at the tension end of the stay cable. A stable mounting point is provided for tensioning and lowering, the problem that a conventional tensioning device is difficult to apply due to the fact that the exposed length of a steel strand at the tensioning end is small is solved, the conversion tool is simple in structure and convenient to mount, and modular construction can be achieved; meanwhile, the stay cable and the stay cable anchoring nut are separated in cooperation with jacking operation of a center hole jack installed at the top of the supporting frame, the stay cable is integrally lowered through lowering operation of the center hole jack after separation, and therefore the problems that in the related technology, the exposed length of a steel strand at the tensioning end is small, and an anchor head at the anchoring end is not provided with an inner anchor nest; and the conventional construction method cannot be adopted to carry out overall or one-by-one releasing and tensioning dismantling on the old cables.
本申请涉及一种平行钢绞线斜拉索旧索整体拆除的装置及方法，转接锚具设置在撑架内部空间内，并且可以通过其斜拉索连接部与外露长度较短的斜拉索张拉端的钢绞线锚接，可通过内锚窝与螺纹拉杆连接，从而提供了一种转换工装，为张拉和下放提供的稳固安装点，避免张拉端钢绞线外露长度小导致常规张拉装置难以应用的问题，转换工装构造简单，安装便捷，可实现模块化施工；同时配合安装在撑架顶部的穿心千斤顶顶升操作将斜拉索和斜拉索锚固螺母分离，并在分离后利用穿心千斤顶下放操作整体下放斜拉索，从而以解决相关技术中张拉端钢绞线外露长度小，锚固端的锚头无内锚窝，导致无法采用常规施工方法对旧索进行整体或逐根放张拆除的问题。
Device and method for integrally dismantling old parallel steel strand stay cable
The invention relates to a device and a method for integrally dismantling old parallel steel strand stay cables, a switching anchorage device is arranged in an internal space of a bracket, can be anchored with a steel strand at a tension end of a stay cable with a shorter exposed length through a stay cable connecting part of the switching anchorage device, and can be connected with a threaded pull rod through an inner anchor nest, so that a switching tool is provided, and the switching anchorage device can be used for replacing the steel strand at the tension end of the stay cable. A stable mounting point is provided for tensioning and lowering, the problem that a conventional tensioning device is difficult to apply due to the fact that the exposed length of a steel strand at the tensioning end is small is solved, the conversion tool is simple in structure and convenient to mount, and modular construction can be achieved; meanwhile, the stay cable and the stay cable anchoring nut are separated in cooperation with jacking operation of a center hole jack installed at the top of the supporting frame, the stay cable is integrally lowered through lowering operation of the center hole jack after separation, and therefore the problems that in the related technology, the exposed length of a steel strand at the tensioning end is small, and an anchor head at the anchoring end is not provided with an inner anchor nest; and the conventional construction method cannot be adopted to carry out overall or one-by-one releasing and tensioning dismantling on the old cables.
本申请涉及一种平行钢绞线斜拉索旧索整体拆除的装置及方法，转接锚具设置在撑架内部空间内，并且可以通过其斜拉索连接部与外露长度较短的斜拉索张拉端的钢绞线锚接，可通过内锚窝与螺纹拉杆连接，从而提供了一种转换工装，为张拉和下放提供的稳固安装点，避免张拉端钢绞线外露长度小导致常规张拉装置难以应用的问题，转换工装构造简单，安装便捷，可实现模块化施工；同时配合安装在撑架顶部的穿心千斤顶顶升操作将斜拉索和斜拉索锚固螺母分离，并在分离后利用穿心千斤顶下放操作整体下放斜拉索，从而以解决相关技术中张拉端钢绞线外露长度小，锚固端的锚头无内锚窝，导致无法采用常规施工方法对旧索进行整体或逐根放张拆除的问题。
Device and method for integrally dismantling old parallel steel strand stay cable
一种平行钢绞线斜拉索旧索整体拆除的装置及方法
DING XIANGLIN (author) / CHEN ZHIMIN (author) / WANG YONGPENG (author) / YUN QIHONG (author) / LOU SONG (author) / ZHAO LANHAI (author) / XIE XIANG (author) / KUANG YUNFEI (author) / XU YINGSHENG (author) / CHENG JIANWEN (author)
2024-07-16
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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