Limiting plate combination for improving efficiency of lifting steel truss
A technology of limit plate and truss, which is applied in the processing of building materials, construction, building structure, etc., can solve the problems of low installation efficiency, inclined web rod in place, cumbersome calibration process, etc.
Inactive Publication Date: 2019-12-10
中冶(上海)钢结构科技有限公司
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Problems solved by technology
With this method, secondary hoisting is required, and the installation and calibration procedures of the diagonal rods are cumbersome and the installation efficiency is low
Method used
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Embodiment Construction
[0018] The present invention is further illustrated below by specific examples.
[0019] Such as figure 1 , figure 2 As shown, a limit plate combination for improving the hoisting efficiency of steel trusses includes a first limit plate and a second limit plate, wherein the first limit plate is in the shape of a rectangle, and a circle is set at the ends of both sides. hole and a long hole; the second limiting plate is rectangular and has a round hole in its center.
[0020] Such as image 3 As shown, the use method of the limiting plate combination for improving the hoisting efficiency of the steel truss includes
[0021] Step 1. The factory prefabricates a plurality of first limiting plates and second limiting plates respectively;
[0022] Step 2, the second limiting plate is welded and fixed to the corbel and diagonal rod of the steel truss respectively;
[0023] Step 3, connecting the first limiting plate and the second limiting plate with bolts;
[0024] Step 4, co...
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The invention relates to the field of steel structures, in particular to a limiting plate combination for improving the efficiency of lifting a steel truss. The limiting plate combination for improving the efficiency of lifting the steel truss is characterized by comprising first limiting plates and second limiting plates, wherein the first limiting plates are rectangular, round holes and oblong holes are separately formed in the end parts of two sides of the first limiting plates, the second limiting plates are rectangular, and round holes are formed in the centers of the second limiting plates. Before the whole truss is lifted, a limiting plate assembly and a chain block are used for temporarily fixing a diagonal web member on the end part to the truss, the truss and the diagonal web member are lifted together in place when the truss is lifted. After an upper chord and a lower chord of the truss are calibrated, the diagonal web member on the end part is calibrated by adjusting the limit plates; after the calibration is completed, welding and fixing are carried out; and finally, the limiting plate assembly is removed. The operation ensures the installation accuracy and improves the installation efficiency.
Description
technical field [0001] The invention relates to the field of steel structures, in particular to a limit plate combination for improving hoisting efficiency of steel trusses. Background technique [0002] Steel truss (H-section or box-section) structures are widely used in engineering construction projects. For the installation of the oblique web bars at the end of the steel truss (the oblique web bars connecting the truss and the steel column), there are currently two common methods: (1) The end oblique web bars are assembled and welded together with the truss, and then hoisted. With this method, often due to the control of the assembly angle of the diagonal rods and the installation accuracy of the truss, there are serious misalignment phenomena between the other end of the diagonal rod and the upper corbel of the steel column after the truss is in place. (2) When the truss is assembled, the oblique webs are reserved, and after the hoisting of the whole truss is completed,...
Claims
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IPC IPC(8): E04G21/00E04G21/16
CPCE04G21/00E04G21/16
Inventor 张立恒邹福家
Owner 中冶(上海)钢结构科技有限公司