Construction method for mounting scaffolds by using underground wall body ultralong vertical ribs at one step
A scaffolding and sub-installation technology, which is applied to artificial islands, water conservancy projects, underwater structures, etc., can solve problems such as labor and material costs, and achieve the effects of reducing procedures, improving efficiency, and reducing costs
Active Publication Date: 2011-12-14
CHINA 22MCC GROUP CORP
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In this way, the reinforced horse stool needs to be made separately and installed separately, which is labor-intensive and material-intensive
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[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] The construction method of installing the scaffolding at one time with the ultra-long vertical reinforcement of the underground wall described in this embodiment is carried out according to the following steps:
[0018] 1. See figure 1 , image 3 . After the steel bars of the structural bottom plate are bound, the first stage of the double-row scaffolding is erected according to the design position. The position of the large horizontal bar 2 is 300mm above the upper surface elevation of the structural floor. For example: the thickness of the structural bottom plate is 500mm, and the step distance of the double-row scaffolding is 1500mm, then the height of the short steel pipe riser 1 of the first step of the double-row scaffolding is 500+300+1500+200=2500mm.
[0019] 2. Still refer to figure 1 , image 3 . Set up the second step frame. ...
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The invention relates to a building construction method, in particular to a construction method for mounting scaffolds by using underground wall body ultralong vertical ribs at one step. The construction method is characterized by comprising the following steps of: setting first-step frame short steel tubes of double rows of scaffolds as temporary risers to be positioned on a concrete cushion layer; dismantling the short steel tubes when base plate concrete is initially set; finishing the elevation of 300mm from a first row of large cross bars in double rows of scaffolds to a structural base plate and taking the large cross bars as scaffold sweeping bars, wherein second-step frame steel tube risers of the double rows of scaffolds are positioned between the first-step frame short steel tubes in the double rows of scaffolds and the bottom elevation of the second-step frame steel tube risers is the thickness of a multilayer plate higher than that of a design surface of the structural base plate; dismantling the first-step frame short steel tubes of double rows of scaffolds one by one, filling up tubular eyes formed on the structural base plate one by one and paving a plurality of layers of plates below the second-step frame steel tube risers in the double rows of scaffolds one by one; fully filling primary slurry concrete into the tubular eyes; and trowelling and polishing the concrete along with a large-surface base plate. The invention has the advantages of saving steel, reducing working procedures, improving the efficiency, reducing the cost and ensuring the waterproof quality of an underground structure.
Description
technical field [0001] The invention relates to a building construction method, in particular to a scaffolding construction method for one-time installation of ultra-long vertical bars of an underground wall. Background technique [0002] In the construction of underground structures, in order to reduce the number of steel bar connections and save steel, the underground wall can adopt the super-long steel bar one-time construction technology. That is, before the concrete is poured on the bottom slab of the underground structure, the entire vertical bar of the wall is pre-embedded, instead of only pre-embedding a part of the lap length. In this way, the connection times of steel bars can be reduced and steel materials can be saved. For the temporary fixation of the vertical bars of the wall, double-row scaffolding is used. This scaffolding can be considered for the next wall formwork. In the prior art, since the double-row scaffolding is located on the structural floor tha...
Claims
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IPC IPC(8): E04G21/00E04G1/00E02D29/00
Inventor 李建国苑宗双闻兵胡毅
Owner CHINA 22MCC GROUP CORP