Construction method for assisting reticulated shell structure in avoiding secondary starting at expansion joint
A construction method and technology of expansion joints, which are applied in special structures, building components, building structures, etc., can solve problems such as affecting the construction period and increasing construction costs, improve construction efficiency, and reduce the process and operation of secondary starting installations. handy effect
Inactive Publication Date: 2021-10-15
CHINA 22MCC GROUP CORP
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Problems solved by technology
According to the position of the starting span, the grid structure can be divided into gable starting and middle spanning. Regardless of the starting span method, for the grid structure with expansion joints, it is necessary to disconnect the rods at the position of the expansion joints, resulting in the need for secondary construction. The hoisting of the starting span and the second hoisting of the starting span will increase the construction cost and affect the construction period
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0016] A construction method for an auxiliary reticulated shell structure without secondary starting at the expansion joint is carried out according to the following steps:
[0017] A. Select the ordinary mesh shell splicing rod as the transition rod 1. The two ends of the transition rod 1 are respectively equipped with high-strength bolts and nuts, and the bolts and nuts at both ends of the transition rod 1 need to meet: forward rotation of the nut , the high-strength screw can enter the bolt ball 2 hole, reversely rotate the nut, and the high-strength screw exits the bolt ball 2.
[0018] B. Divide the reticulated shell structure into the first, second, and third installation areas according to the number of expansion joints 3. The first area is normally installed. The bolt ball 2 (that is, the bolt ball 2 at the edge of the first zone and t...
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The invention relates to the field of net rack installation, in particular to a construction method for assisting a reticulated shell structure in avoiding secondary starting at an expansion joint. The method comprises the following steps that transition rod pieces are selected, high-strength bolts and nuts are arranged at two ends of the transition rod pieces respectively, and the reticulated shell structure is divided into a plurality of areas; after a first area is started and mounted completely, bolt balls of the first area and a second area on the two sides of the expansion joint are connected through the transition rod pieces; the bolt balls, located on the edge of the expansion joint, of the first area serve as a starting point, after all rod pieces of the second area are installed, the transition rod pieces are dismantled, the step A to the step C are repeated, and the rod pieces of the remaining areas are assembled. The problem of secondary starting hoisting of the grid structure at the expansion joint is directly solved, the construction difficulty is reduced, meanwhile, the construction efficiency is improved, and the construction cost is reduced.
Description
technical field [0001] The invention relates to the field of network frame installation, in particular to a construction method for avoiding secondary starting of an auxiliary network shell structure at expansion joints. Background technique [0002] The square quadrangular pyramid bolt ball grid structure belongs to the high-order hyperstatically indeterminate structure system, which is a spatial structure formed by connecting multiple rods through nodes according to a certain grid form. According to the position of the starting span, the grid structure can be divided into gable starting and middle spanning. Regardless of the starting span method, for the grid structure with expansion joints, it is necessary to disconnect the rods at the position of the expansion joints, resulting in the need for secondary construction. The hoisting of the starting span and the second hoisting of the starting span will increase the construction cost and affect the construction period. Con...
Claims
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IPC IPC(8): E04B1/34E04B1/58E04G21/00
CPCE04B1/34E04B1/58E04G21/00
Inventor 张健李延涛
Owner CHINA 22MCC GROUP CORP