Construction method of large-span steel truss floor deck in steel structure
A technology of steel bar truss and construction method, which is applied in the direction of floors, structural elements, building components, etc., can solve problems such as deformation, achieve the effects of reducing force deformation, ensuring the quality of construction and installation, and facilitating the stability of connections
Active Publication Date: 2022-07-01
BEIJING CONSTR ENG GRP CO LTD
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Problems solved by technology
[0003] The invention provides a construction method for a large-span reinforced truss floor deck in a steel structure, which is used to solve deformation control, connection installation, temporary support and monitoring comparison of the truss floor deck in a large-span steel structure technical problem
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Embodiment Construction
[0034] Taking a project as an example, the total construction area of the project is 142,656 square meters. The ground is divided into 9 residential buildings and 4 supporting podium buildings. The foundation form is a raft foundation, the underground is a concrete frame structure, and the above-ground structure is a steel structure prefabricated house, with three underground floors and 13--16 floors above ground. The above-ground steel structure mainly consists of a frame system composed of small-section steel pipe columns and I-beam beams 10. The section size of steel columns 7 and steel beams 10 is small. The total amount of steel structure is about 9600t. Mainly 130mm / 220mm, the maximum span is 6600×13300mm beamless one-way truss floor bearing plate 220mm thick.
[0035] According to the construction drawings, the laying direction of the steel truss floor deck 1 and the joint processing are carried out in-depth design, and the processing size and lap length of the truss...
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The invention discloses a construction method for a large-span steel truss floor deck in a steel structure. During construction, the steel truss floor deck is bi-directionally arched, which can effectively avoid or reduce the impact of the large-span truss floor deck. Force deformation, and through the provision of temporary support, when the steel truss floor deck does not form a stable force system, the steel truss floor deck can be uniform and the bearing capacity can be reduced; through the steel truss floor deck, the steel beam and the steel column are respectively designed with targeted design , which is conducive to the laying and strengthening of floor decks, as well as subsequent formwork installation and concrete pouring; the setting of anchor bars and angle steel supports is beneficial to the connection stability of floor decks; through the combined application of stress sensors, strain sensors and 3D scanning technology , Comprehensively compare and adjust the force and deformation monitoring and control of the steel truss floor deck in the process and the position accuracy after installation, which can effectively ensure the quality of construction and installation.
Description
technical field [0001] The invention belongs to the technical field of building construction, and particularly relates to a construction method of a large-span steel bar truss floor deck in a steel structure. Background technique [0002] With the development of the national economy, prefabricated steel structure buildings are an important system of prefabricated buildings. Reinforced truss floor decks are widely used in prefabricated buildings. However, with the changes in the application form of steel structure buildings, large-span buildings are becoming more and more The more, this puts forward higher requirements for the installation and construction of steel truss floor decks. The installation process, temporary support, connection design, process monitoring and data comparison, etc., all need to be fully designed to ensure the long-span steel truss. The construction quality in steel structure buildings ensures that the construction on the construction site is convenie...
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IPC IPC(8): E04B1/342E04B5/32E04C5/06E04G21/12
CPCE04B1/342E04B5/32E04C5/06E04G21/121
Inventor 汪安乐丁明华刘加俊邢辉褚金栋葛铮君周禹季彪李波陶亮荣张凯
Owner BEIJING CONSTR ENG GRP CO LTD