A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span prestressed truss hoisting method
The invention provides a large-span prestressed truss hoisting method which comprises the following steps: arranging a truss building platform beside a pre-built bracket, and building a jig frame on the truss building platform according to the preset truss size and arch curvature; a truss is built on the jig frame in a side-lying mode, and a side-lying truss is obtained; the side-lying truss is lifted upwards and turned over, so that the side-lying truss is placed on the lower chord supporting point in an arch-shaped upright form by taking the lower chord as a supporting point, and an upright truss is obtained; and according to the hoisting position obtained through hoisting simulation in advance, hoisting equipment is installed at the hoisting position of the upright truss, and the upright truss is wholly hoisted to the top of the support. The problems that in the prior art, an assembly operation platform needs to be arranged at each truss, a large amount of manpower and materials are consumed, interface butt joint is not easy to achieve during high-altitude assembly, and the welding quality is difficult to guarantee can be solved.
本发明提供一种大跨度预应力桁架吊装方法，包括如下步骤：在预先搭建的支架旁边设置桁架搭建平台，并在桁架搭建平台上按照预设的桁架的尺寸和拱形的弯曲度搭建胎架；在胎架上采用侧卧的方式搭建桁架，得到侧卧的桁架；将侧卧的桁架向上起吊翻转，使侧卧的桁架以下弦作为支点呈拱形直立的形态放置在下弦支撑点上，得到直立的桁架；按照预先吊装仿真模拟得到的吊装起吊位置，将起吊设备安装在直立的桁架的起吊位置上，并将直立的桁架整体吊装至所述支架的顶部。利用本发明能够解决现有技术中，需要在每榀桁架处均设置组装操作平台，耗费大量人力物料以及高空组装不易于对接口，焊接质量难以得到保证等问题。
Large-span prestressed truss hoisting method
The invention provides a large-span prestressed truss hoisting method which comprises the following steps: arranging a truss building platform beside a pre-built bracket, and building a jig frame on the truss building platform according to the preset truss size and arch curvature; a truss is built on the jig frame in a side-lying mode, and a side-lying truss is obtained; the side-lying truss is lifted upwards and turned over, so that the side-lying truss is placed on the lower chord supporting point in an arch-shaped upright form by taking the lower chord as a supporting point, and an upright truss is obtained; and according to the hoisting position obtained through hoisting simulation in advance, hoisting equipment is installed at the hoisting position of the upright truss, and the upright truss is wholly hoisted to the top of the support. The problems that in the prior art, an assembly operation platform needs to be arranged at each truss, a large amount of manpower and materials are consumed, interface butt joint is not easy to achieve during high-altitude assembly, and the welding quality is difficult to guarantee can be solved.
本发明提供一种大跨度预应力桁架吊装方法，包括如下步骤：在预先搭建的支架旁边设置桁架搭建平台，并在桁架搭建平台上按照预设的桁架的尺寸和拱形的弯曲度搭建胎架；在胎架上采用侧卧的方式搭建桁架，得到侧卧的桁架；将侧卧的桁架向上起吊翻转，使侧卧的桁架以下弦作为支点呈拱形直立的形态放置在下弦支撑点上，得到直立的桁架；按照预先吊装仿真模拟得到的吊装起吊位置，将起吊设备安装在直立的桁架的起吊位置上，并将直立的桁架整体吊装至所述支架的顶部。利用本发明能够解决现有技术中，需要在每榀桁架处均设置组装操作平台，耗费大量人力物料以及高空组装不易于对接口，焊接质量难以得到保证等问题。
Large-span prestressed truss hoisting method
大跨度预应力桁架吊装方法
LYU YANJING (author) / SHI ZHANLAI (author) / ZHOU ZHISHENG (author) / LI QINGDONG (author) / WU HONGWEI (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
E04G
SCAFFOLDING
,
Baugerüste
Construction method for modular hoisting of super-large-span prestressed pipe truss
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