Embedded steel type underpinning node
An embedded type and steel type technology, which is applied in building maintenance, construction, building construction, etc., can solve the problems of complicated structure, difficult construction, and damage to the original column of the underpinning joints of the section steel tension bolts, so as to save the amount of steel bars, Improve the shear bearing capacity and the effect of improving the bearing capacity
Pending Publication Date: 2019-07-05
TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD
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Problems solved by technology
The structure of the underpinning joint of section steel anti-tension bolt is complicated, the construction is difficult, and at the same time it will cause damage to the original column, so it is rarely used in actual engineering
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[0040] Such as Figure 1-3 As shown, an embedded steel underpinning node includes: underpinning column 1, underpinning beam 2, connecting beam 3, connecting steel plate 4 ( Figure 4-5 ) and L-shaped steel 5 ( Figure 6-7 ). The underpinning beam 2 is arranged symmetrically on both sides of the underpinning column 1, and is poured in two steps, that is, the first-stage concrete 21 and the second-stage concrete 22 are formed. The connecting steel plate 4 is arranged on the contact interface between the first-stage concrete 21 and the second-stage concrete 22, and the L-shaped steel 5 is relatively arranged on the top and bottom of the second-stage concrete 22, and one limb of the L-shaped steel 5 is welded to the connecting steel plate 4. The connecting beam 3 is arranged symmetrically on the other two sides of the underpinning column 1, and is poured together with the first-stage concrete 21 to form an overall structure.
[0041] The underpinning beam 2 is poured twice to f...
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The invention relates to an embedded steel type underpinning node, which comprises an underpinning column (1), underpinning beams (2) arranged on both sides of the underpinning column (1), and connecting beams (3) arranged on the other two sides of the underpinning column (1)and connected with the underpinning beams (2); and connecting steel plates (4) are arranged in the underpinning beams (2), L-sectional steel (5) is fixed at the two ends of the connecting steel plates (4),and tension screws (6) are arranged between the connecting steel plates (4). Compared with the prior art, the embeddedsteel type underpinning node has the characteristics that the bearing capacity of the underpinning node is improved, rigidity and overall stability of the underpinning node are increased, and using amount of reinforcing steel is saved.
Description
technical field [0001] The invention relates to an underpinning node, in particular to an embedded steel underpinning node. Background technique [0002] The underpinning of structures is an important link in the displacement and jacking of buildings (structures), which directly affects the success of the displacement and jacking of buildings (structures). The underpinning technology refers to effectively transferring the load of the original building (structure) to the underpinning structure, and supporting the upper building (structure) through the underpinning structure, so as to carry out transformation or displacement. The common forms of column underpinning joints include column underpinning of beam with columns, section steel underpinning of tension bolts, etc. Among them, the underpinning method of the reinforced concrete column-holding beam column has been widely used because of its low construction difficulty, simple structure, and wide application range. However,...
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IPC IPC(8): E04G23/06
CPCE04G23/06
Inventor 张能伟
Owner TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD