Construction method for underground large-span large-space ultrahigh non-column steel structural tube truss

Abstract

The invention discloses a construction method for an underground large-span large-space ultrahigh non-column steel structural tube truss. The construction method comprises the following steps: (I) dividing each tube truss into two truss end parts and 2-4 truss unit bodies, and completing prefabrication in a factory; (II) on a construction site, pre-embedding a truss end part on a set perpetual structure; (III) on the construction site, transporting the truss units by adopting a gun carrier to positions below the set mounting positions of the truss units, putting the truss units on a sleeper, connecting two adjacent truss unit bodies to form a tube truss main body, and connecting butt-joint two chord rods I through segmented joints; and (IV) by adopting a suspending device, vertically suspending the tube truss main body to the position, connecting the two ends of the tube truss main body with the corresponding two end parts of the truss, and connecting the butt-joint two chord rods II through end head joints. According to the construction method, large-span large-space tube truss construction in an underground structure can be completed, the construction quality can be guaranteed, and the construction cost can be reduced.

Description

technical field [0001] The invention relates to an underground building structure, in particular to a construction method of an underground large-span and large-space super-high column-free steel structure pipe truss. Background technique [0002] With the development of social economy, five-star hotels and high-end office buildings are increasing. As a five-star hotel, it is necessary for customers to stay comfortably, and at the same time, it must also have a series of supporting facilities to meet business needs. The banquet hall is mainly responsible for banquets, meetings, and weddings. Display and other functions. Its function requires that the banquet hall must have a large space span, high floor height and clear height, large bays, and no beams and columns. The concrete structure cannot meet the storey height and span. The seamless steel pipe truss has light weight and large span, which can solve this problem. However, this type of truss structure is mostly used f...

AI Technical Summary

Problems solved by technology

However, this type of truss structure is mostly used for above-ground space structures, and the underground space is affected by the multi-beam-column system of the underground structure, so it is rarely used, and there are no relevant construction cases for reference

[0003] A project is located in the center of the second floor of the underground structure, with a length of 36 meters, a width of 27 meters, and a clear height of 8 meters. 15 seamless square tube trusses are used. Each truss is 27 meters long, 1.7 meters high, and weighs 9.5 tons. It belongs to the underground The large-span and large-space ultra-high column-free steel structure pipe trusses are limited by the basement structure. The overall truss cannot be directly transported to the site, and the on-site tower crane cannot directly hoist the single truss in place, and there is no parking hoisting equipment around the foundation pit. The crane cannot be hoisted

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